TOTAL PETROCHEMICALS RESEARCH FELUY Patent applications |
Patent application number | Title | Published |
20140155665 | STEAMCRACKING BIO-NAPHTHA PRODUCED FROM COMPLEX MIXTURES OF NATURAL OCCURRING FATS AND OILS - A process for making a bio-naphtha and optionally bio-propane from a complex mixture of natural occurring fats & oils, wherein
| 06-05-2014 |
20140150494 | Method for Optimizing Energy Efficiency in a Polymerization Process - A process for separation of a hydrocarbon-containing feed stream can include cooling the hydrocarbon-containing feed stream using an absorption refrigeration cycle to form a cooled feed stream. The cooled feed stream can be subjected to distillation conditions to remove a bottom stream including co-monomer; and an overhead stream including hydrocarbon diluents, olefin monomer, and components selected from H | 06-05-2014 |
20140114105 | PROCESS FOR THE STEAMCRACKING OF BIO-NAPHTHA PRODUCED FROM COMPLEX MIXTURES OF NATURAL OCCURRING FATS & OILS - A process can include making a bio-diesel, a bio-naphtha, and optionally bio-propane from a complex mixture of natural occurring fats & oils. The complex mixture can be subjected to a refining treatment for removing a major part of non-triglyceride and non-fatty acid components to obtain refined oils. The refined oils can be subjected to a fractionation step to obtain a substantially unsaturated liquid triglyceride part (phase L), and a substantially saturated solid triglyceride part (phase S). The phase L can transformed into alkyl-esters as bio-diesel by a transesterification. The phase S can be transformed into substantially linear paraffin's as the bio-naphtha by an hydrodeoxygenation. Fatty acids can be obtained from the phase S and transformed into substantially linear paraffin's as the bio-naphtha by hydrodeoxygenation or decarboxylation. Fatty acids soaps can be obtained from the phase S that are transformed into substantially linear paraffin's as the bio-naphtha by decarboxylation. | 04-24-2014 |
20140094575 | Process for Monomer Recovery From a Polymerization Process - The present relates to a process for optimizing the recovery of unreacted monomers from a polymerization process, wherein said process comprises the steps of
| 04-03-2014 |
20140088272 | REACTOR AND PROCESS FOR PREPARING POLYOLEFIN - The invention relates to a process for preparing polyolefin in a loop reactor. The polymer is prepared by polymerizing olefin monomers in the presence of a catalyst to produce a polyolefin slurry while pumping said slurry through said loop reactor by means of a pump. The present process is characterized in that the catalyst is fed in the loop reactor at a distance to the pump. The invention allows production of the polymer with advantageous properties while leading to fewer blockages of the reactor. | 03-27-2014 |
20140051901 | Catalytic Cracking - A process for producing a catalyst additive for an FCC catalytic cracking process, the process comprising the steps of providing an MFI or MEL aluminosilicate having a silicon/aluminium atomic ratio of from 10 to 250; de-aluminating the MFI or MEL aluminosilicate by extracting from 20 to 40 wt % of the alumina therefrom; combining the de-aluminated MFI or MEL aluminosilicate with a binder; and calcining the combination of the de-aluminated MFI or MEL aluminosilicate and the binder at elevated temperature to produce the catalyst additive. | 02-20-2014 |
20140051315 | SPUNBOND NONWOVENS MADE FROM HIGH-CRYSTALLINITY PROPYLENE POLYMER - The present invention relates to fibers comprising at least 98 wt % of a propylene polymer having, in particular, a specific molecular weight distribution M | 02-20-2014 |
20140048967 | Three-Layer Rotomoulded Motorboats - This invention discloses three-layer rotomoulded motorboats having excellent floatability prepared from foamed polyethylene. | 02-20-2014 |
20130345374 | Double Loop Technology - A method for the copolymerization of ethylene and a C | 12-26-2013 |
20130338419 | Production of Olefins - A process for converting a hydrocarbon feedstock to provide an effluent containing light olefins, the process comprising passing a hydrocarbon feedstock, the feedstock containing at least one C | 12-19-2013 |
20130317269 | Process for Obtaining Catalyst Composites MeAPO and Their Use in Conversion of Organics to Olefins - A mixture can include 0.01 to 30 weight % of a medium or large pore crystalline silicoaluminate, silicoaluminophosphate materials, or silicoaluminate mesoporous molecular sieves (A), and 99.99 to 70 weight % of a MeAPO molecular sieve. The mixture can be included in a catalyst. An XTO process can include contacting an oxygen-containing, halogenide-containing, or sulphur-containing organic feedstock with the catalyst under conditions effective to convert the organic feedstock to olefin products. A combined XTO and OCP process can include contacting the organic feedstock with the catalyst at conditions effective to convert at least a portion of the organic feedstock to form an XTO reactor effluent including light olefins and a heavy hydrocarbon fraction, separating the light olefins from the heavy hydrocarbon fraction, and contacting the heavy hydrocarbon fraction in an OCP reactor at conditions effective to convert at least a portion of the heavy hydrocarbon fraction to light olefins. | 11-28-2013 |
20130287634 | System and Reactor For Improved Polymer Homogeneity - The present invention relates to a process for the polymerization of an olefin monomer. In particular, the present invention relates to a process for the polymerization of an olefin monomer and one or more optional comonomers in presence of a polymerization catalyst and hydrogen, said process being characterized by an improved control of the hydrogen concentration in the polymerization reactor. In addition, the present invention provides for an improved hydrogen feeding system to a polymerization reactor. Furthermore, the present invention provides for a polymerization reactor comprising such an improved hydrogen feeding system. | 10-31-2013 |
20130237683 | Monomers Issued From Renewable Resources and Process for Polymerising Them - This invention relates to the synthesis of polycarbonates prepared from carbonate monomers derived from the biomass in the presence of a system comprising an organometallic transfer agent and alcohol. It also relates to the polymers resulting from these cyclic compounds. | 09-12-2013 |
20130236671 | Resin and Pipes for Transporting Water Containing Chlorine Dioxide - This invention is related to the preparation of polyethylene pipe resins suitable for transporting hot and cold water containing chlorine dioxide. | 09-12-2013 |
20130225707 | Articles Formed From Polypropylene Prepared with a Single-Site Catalyst and Poly(hydroxyl carboxylic acid) Blends - A resin composition comprising at least 0.1% by weight of poly(hydroxy carboxylic acid) and at least 50% by weight of polypropylene prepared with a single-site catalyst, preferably with a metallocene catalyst. | 08-29-2013 |
20130224078 | SYSTEM FOR PRODUCING STEAM USING HEAT RECOVERED FROM A POLYMERIZATION REACTION - The present invention relates to a process for producing steam using heat recovered from a polymerization reaction. In particular, the present invention relates to a process for producing steam using heat recovered from a polymerization reaction for producing polyolefin, comprising the steps of: thermally contacting said polymerization reaction with a cooling fluid such that the cooling fluid removes heat from said reaction, thermally contacting at least part of said cooling fluid with at least one absorption cycle thereby transferring heat from the cooling fluid to said absorption cycle, using said absorption cycle to produce steam from a condensate, wherein the cooling fluid is used as a hot source for heating at least one evaporator and at least one generator comprised in said at least one absorption cycle. The present invention also relates to a process for cooling a polymerization reaction using a process as described herein. Said invention also relates to a polyolefin producing unit. | 08-29-2013 |
20130213982 | Injection Stretch Blow Molded Container Comprising A Polyolefin Composition - The present invention relates to an injection-stretch blow molding process (ISBM) for the manufacture of an impact-resistant container with good optical properties from a polyolefin composition comprising a polypropylene and a polyethylene produced with a metallocene-based catalyst. | 08-22-2013 |
20130204061 | METHOD FOR MAKING A CATALYST COMPRISING A PHOSPHORUS MODIFIED ZEOLITE TO BE USED IN A MTO PROCESS - The present invention is the use of a catalyst in a MTO process to convert an alcohol or an ether into light olefins wherein said catalyst comprises a phosphorus modified zeolite and is made by a method comprising the following steps in this order,
| 08-08-2013 |
20130203876 | METHOD TO START-UP A PROCESS TO MAKE EXPANDABLE VINYL AROMATIC POLYMERS - The present invention is a method to start-up a process to make expandable vinyl aromatic polymer pellets comprising,
| 08-08-2013 |
20130202834 | BIMODAL POLYETHYLENE FOR BLOW-MOULDING APPLICATIONS - The invention relates to A process for the polymerisation of ethylene to produce a polyethylene resin in at least two slurry loop reactors connected to each other in series, the resin having a bimodal molecular weight distribution, a molecular weight distribution MWD of at least 7.0, an HLMI of from 1 to 100 g/10 min, and a density of from 0.935 to 0.960 g/cm | 08-08-2013 |
20130197291 | METHOD FOR MAKING A CATALYST COMPRISING A PHOSPHORUS MODIFIED ZEOLITE TO BE USED IN AN ALCOHOLS DEHYDRATION PROCESS - The present invention is the use of a catalyst to convert an alcohol into light olefins in a dehydration process wherein said catalyst comprises a phosphorus modified zeolite and is made by a method comprising the following steps in this order,
| 08-01-2013 |
20130197122 | NANOCOMPOSITES WITH IMPROVED HOMOGENEITY - The present invention relates to nanocomposites comprising nanoparticles and a thermoplastic polymer composition, said nanocomposite being characterized by improved homogeneity, and in consequence by improved properties. Further, the present invention relates to a process for the production of such nanocomposites by first dispersing the nanoparticles in a dispersant and subsequent blending with a thermoplastic polymer composition. | 08-01-2013 |
20130192173 | INJECTION STRETCH BLOW MOULDING CONTAINERS PREPARED WITH POLYETHYLENE - An injection stretch blow moulded container prepared essentially from polyethylene prepared in the presence of a chromium-based catalyst system, the polyethylene having a density of from 0.950 to 0.965 g/cm | 08-01-2013 |
20130190547 | PROCESS FOR DEHYDRATION OF ETHANOL INTO ETHYLENE WITH LOW ENERGY CONSUMPTION - A process for dehydration of an ethanol feedstock into ethylene, comprising the vaporization of said ethanol feedstock in a mixture with at least a portion of the recycled purified water stream from heat exchange with the effluent that is obtained from the last reactor. | 07-25-2013 |
20130178683 | PROCESS FOR REMOVING OXYGENATED CONTAMINANTS FROM AN HYDROCARBONSTREAM - The present invention is a process for removing oxygenated contaminants and water from an hydrocarbon stream comprising:
| 07-11-2013 |
20130172654 | PROCESS FOR REMOVING OXYGENATED CONTAMINANTS FROM AN HYDROCARBON STREAM - The present invention is a process for removing oxygenated contaminants and water from an hydrocarbon stream comprising:
| 07-04-2013 |
20130172653 | "PROCESS FOR REMOVING OXYGENATED CONTAMINANTS FROM AN HYDROCARBONSTREAM" - The present invention is a process for removing oxygenated contaminants and water from an hydrocarbon stream comprising:
| 07-04-2013 |
20130102741 | PROCESS FOR IMPROVING THE DEVOLATILIZATION OF POLYMER SLURRY PRODUCED IN A POLYMERIZATION REACTOR - The present invention relates to a process for improving the devolatilization of polymer slurry produced in an olefin polymerization reactor. The process is characterized in that it involves an adjustment of the temperature of the interior surface of the flash line for periodically transferring polymer slurry from the polymerization reactor to a downstream processing unit. In particular, in accordance with the present process, the temperature of the interior surface of the flash line is adjusted to a temperature which is equal to or higher than the softening temperature of the polymer passing through said flash line whereby said temperature is higher in a first half of the length of the flash line than in the remaining length of the flash line. | 04-25-2013 |
20130095001 | Process for Improving the Polymerization of Ethylene and One or More Optional Comonomer(s) in a Polymerization Loop Reactor - The present invention relates to a process for improving the polymerization of ethylene and one or more optional co-monomer(s) in a polymerization loop reactor characterized in that said process comprises the step of controlling the hydrogen/monomer ratio along the path of the reactor by multiple, spatially separated, feeding of hydrogen along the path of the loop reactor. In particular, the invention provides a process for controlling, and preferably narrowing, the molecular weight distribution of the produced polymer particles. In another aspect, the invention relates to a polymerization loop reactor suitable for the polymerization process of ethylene and an optional olefin co-monomer, wherein the molecular weight distribution of the produced ethylene polymer can be controlled. | 04-18-2013 |
20130093118 | USE OF THERMOPLASTIC COMPOSITION COMPRISING POLYETHER-BLOCK COPOLYAMIDES AS ADDITIVE - The present invention discloses the use in rotomolding or slush molding applications of a composition comprising a polyolefin, a processing aid and optionally a UV-stabilizer. | 04-18-2013 |
20130049262 | Use of Fluoropolymers for Rotomolding - The present invention discloses the use in rotomolding or slush molding applications of a composition comprising a polyolefin, a processing aid and optionally a UV-stabilizer. | 02-28-2013 |
20130046122 | DEBOTTLENECKING OF A STEAM CRACKER UNIT TO ENHANCE PROPYLENE PRODUCTION - The present invention is method for debottlenecking an existing steam cracker unit of which the operation is modified from high severity to low severity operation, having a cracking zone and a fractionation zone, said fractionation zone comprising a gasoline stripper, a de-methaniser (I), a de-ethaniser (I) a de-propaniser (I) and a de-butaniser (I), said de-propaniser (I) receiving product from the bottom of the de-ethaniser (I) and optionally product from the bottom of the gasoline stripper (I), wherein said debottlenecking method comprises the steps of:
| 02-21-2013 |
20130041196 | DEHYDRATION OF ALCOHOLS ON A CRYSTALLINE SILICATE OF LOW Si/Al RATIO - The present invention (in a first embodiment) relates to a process for the dehydration of an alcohol having at least 2 carbon atoms to make the corresponding olefin, comprising:
| 02-14-2013 |
20130030132 | PROCESS FOR PREPARING POLYOLEFIN - The invention relates to a process for preparing polyolefin in a loop reactor. The polymer is prepared by polymerizing olefin monomers in the presence of a catalyst to produce a polyolefin slurry while pumping said slurry through said loop reactor by means of a pump. The present process is characterized in that the catalyst is fed in the loop reactor at a distance to the pump. The invention allows production of the polymer with advantageous properties while leading to fewer blockages of the reactor. | 01-31-2013 |
20130011643 | Multilayer Rotational Moulding - A multilayer article prepared by rotational moulding can include a layer A that is a polyolefin (PO) based layer prepared from PO and a functionalised polyolefin (FPO), or a PO grafter to a non-polyolefin (NPO) in the form of a block copolymer (PO-g-NPO). A layer B can be a PO that is dissimilar from layer A, an NPO, a mixture thereof, and optionally an FPO or a PO-g-NPO. A layer C can be dissimilar from layer A and similar to or dissimilar from layer B. Layer C can be adjacent to layer A and/or layer B, can have good adhesion to layer A and/or layer B, and is not a blend of layer A and layer B. A method of preparing the multilayer article can include rotational moulding. | 01-10-2013 |
20130011310 | Method and Device for Optimising Catalyst Supply to a Polymerisation Reactor - Methods for supplying a catalyst to an ethylene slurry loop polymerization reactor and polymers formed therefrom are described herein. The method includes preparing a catalyst slurry in a preparation vessel. The slurry includes a hydrocarbon diluent liquid that contains a Ziegler-Natta catalyst. The catalyst slurry is supplied to a buffer vessel, withdrawn therefrom and supplied to a slurry loop polymerization reactor in which ethylene is polymerized. A co-catalyst is mixed with the Ziegler Natta catalyst in the slurry prior to supplying the catalyst slurry to the slurry loop polymerization reactor. The transfer of the catalyst slurry from the preparation vessel to the buffer vessel and the withdrawal of catalyst slurry from the buffer vessel are controlled to maintain the level of catalyst slurry in the buffer vessel substantially constant relative to the level of catalyst slurry in the preparation vessel. | 01-10-2013 |
20120316298 | Linear Low Density Polymers Having Optical and Processing Capabilities of Low Density Polyethylene - The present invention discloses a catalyst system that comprises several bridged bis- or bis-tetrahydro-indenyl components having different substitution patterns in order to prepare polymers having a broad molecular weight distribution. | 12-13-2012 |
20120316296 | Method for Improving a Polymerization Reaction by Taking Out and Analysing a Sample - The disclosure relates to a device for removing and analyzing a sample from a polymerization reactor including one or more sample conduits for removing a sample from the reactor and transferring the sample to a sample flash tank, whereby the conduits are in communication with the reactor and are provided with at least two sampling valves; a sample flash tank for separating said solid particles and evaporated gas, whereby the sample flash tanks are connected to the conduits and provided with a device for analyzing evaporated gas, and including a sample receiver for purifying the solid particles. The receivers are connected to the sample flash tanks and provided with an apparatus for analyzing the solid particles. The disclosure includes a method for improving a polymerization reaction. | 12-13-2012 |
20120309910 | METHOD FOR REPLACING INCOMPATIBLE ETHYLENE POLYMERIZATION CATALYSTS - The present invention relates to a method for optimizing the sequential use of at least two ethylene polymerization catalysts to an ethylene polymerization loop reactor, comprising:
| 12-06-2012 |
20120309908 | Fibres and Nonwoven Prepared From Polypropylene Having a Large Dispersity Index - The present invention relates to a process for the production of fibres and filaments with polypropylene having a broad polydispersity index. The present invention also relates to high elongation nonwoven prepared from such fibres and filaments. It further relates to films and laminates prepared from high elongation nonwoven. | 12-06-2012 |
20120289670 | Fluorinated Alkoxy-Imino Catalyst Components - This invention relates to fluorinated alkoxy-imino metallic complexes and their use in catalyst systems for the polymerisation or oligomerisation of ethylene and alpha-olefins. | 11-15-2012 |
20120289668 | LDPE-Like Polymers With Bisindenyl-Based Ligands Having Different Rings - The present invention discloses a catalyst system that comprises several bridged pseudo-bisindenyl components that are structurally different in order to prepare polymers having a broad molecular weight distribution. | 11-15-2012 |
20120282422 | BIMODAL POLYETHYLENE FOR INJECTION STRETCH BLOW MOULDING APPLICATIONS - A polyethylene resin having a multimodal molecular weight distribution comprising at least two polyethylene fractions A and B, fraction A being substantially free of comonomer and having a lower weight average molecular weight and a higher density than fraction B, each fraction prepared in different reactors of two reactors connected in series in the presence of a Ziegler-Natta catalyst system, the polyethylene resin having a density of from 0.950 to 0.965 g/cm | 11-08-2012 |
20120277388 | POLYETHYLENE PREPARED WITH SUPPORTED LATE TRANSITION METAL CATALYST SYSTEMS - The present invention relates to the field of ethylene polymerisation with a supported late transition metal catalyst system. | 11-01-2012 |
20120271013 | Polyolefin Production - Use of a metallocene compound of general formula Ind | 10-25-2012 |
20120271012 | METHOD FOR NEUTRALIZING POLYMERIZATION CATALYST - The present invention relates to a process for cleaning a catalyst slurry preparation system and/or a catalyst preparation system. More particularly, the invention relates to a cleaning process for a catalyst preparation system and/or for a catalyst slurry preparation system, wherein an aqueous catalyst inactivation agent is used to rinse the systems, or any parts thereof. The catalysts used in the present invention may be chromium, Ziegler-Natta or metallocene catalysts. | 10-25-2012 |
20120271011 | PROCESS FOR THE PREPARATION OF A PARTICULATE POLYETHYLENE PRODUCT - The invention relates to a process for the preparation of a particulate polyethylene product in a loop reactor, wherein the polymerization catalyst applied in the polymerization process comprises a particulate metallocene-alumoxane catalyst immobilized on a porous silica support; and whereby said metallocene-alumoxane catalyst is heterogeneously distributed on said porous silica support. | 10-25-2012 |
20120264892 | METHOD FOR IMPROVING ETHYLENE POLYMERIZATION REACTION - The present invention relates to a method for initiating an ethylene polymerization reaction in an ethylene polymerization loop reactor. More particularly, the invention relates to the timing upon which hydrogen is introduced into the ethylene polymerization loop reactor. The catalysts used in the ethylene polymerization reaction according to present invention are preferably metallocene catalysts. | 10-18-2012 |
20120264891 | METHOD FOR PRODUCING A CATALYST SLURRY BLEND - The present invention relates to a method for producing a catalyst slurry blend suitable for polymerizing ethylene in an ethylene polymerization loop reactor for obtaining an at least trimodal polyethylene product, comprising the steps of:
| 10-18-2012 |
20120259068 | Peelable Polyethylene Films - A homogenous blend comprising from 10% to 90% by weight of a metallocene catalyzed polyethylene (mPE) and from 90% to 10% by weight of styrene-butadiene block copolymers comprising from 5% to 40% by weight of 1,3 butadiene monomer units and from 60% to 95% by weight of styrene monomer unites. The blend of the invention is used to make peelable films for food packaging applications. | 10-11-2012 |
20120252989 | METHOD FOR REPLACING COMPATIBLE ETHYLENE POLYMERIZATION CATALYSTS - The present invention relates to a method for optimizing the sequential feeding of at least two ethylene polymerization catalysts to an ethylene polymerization reactor, comprising:
| 10-04-2012 |
20120252988 | PROCESS FOR PREPARING A BIMODAL POLYETHYLENE PRODUCT IN A SINGLE LOOP REACTOR - The present invention relates to a process for preparing a bimodal polyethylene product in a single loop reactor, comprising polymerizing ethylene monomer and optionally one or more olefin co-monomers in the presence of a single heterogeneous polymerization catalyst consisting of a metallocene-alumoxane catalyst immobilized on a porous support wherein said metallocene comprises only one transition metal. Said polymerization catalyst consists of two physically different fractions of support particles onto which said metallocene-alumoxane catalyst is immobilized. | 10-04-2012 |
20120245307 | PROCESS FOR THE PREPARATION OF A PARTICULATE BIMODAL POLYETHYLENE PRODUCT - The invention relates to a process for the preparation of a particulate bimodal polyethylene product having a median particle diameter of less than 300 μm in a serially connected double loop reactor, wherein said polymerization catalyst applied in the polymerization process comprises a particulate metallocene-alumoxane catalyst immobilized on a porous silica support, wherein said polymerization catalyst has a median particle diameter of less than 50 μm; and whereby the ratio of the median particle diameter of the obtained bimodal polyethylene product to the median particle diameter of the applied polymerization catalyst is less than 30. | 09-27-2012 |
20120245021 | Polyolefins Prepared from a Metallocene and a New Single Site Catalyst Components in a Single Reactor - The present invention discloses a catalyst system based on a metallocene catalyst component and a new single site catalyst component for the production in a single reactor of improved polyolefins having a bimodal molecular weight distribution. | 09-27-2012 |
20120242532 | METHOD FOR MONITORING THE LEVEL OF AN ETHYLENE POLYMERIZATION CATALYST SLURRY - The present invention relates to a method for monitoring the level of an ethylene polymerization catalyst slurry in a mud pot ( | 09-27-2012 |
20120242003 | PROPYLENE POLYMER WITH IMPROVED PROCESSABILITY IN THERMOFORMING - The present invention concerns a propylene polymer comprising at least two propylene polymer fractions of different melt flow index and a minor amount of at least one comonomer, said propylene polymer being further characterized by specific ranges for melt flow index, xylene solubles content and recovery compliance. Said propylene polymer is particularly suited for thermoforming. The present invention further concerns a process for producing said propylene polymer as well as its use in thermoforming. | 09-27-2012 |
20120178879 | PROCESS FOR RECYCLING PRODUCT STREAMS SEPARATED FROM A HYDROCARBON-CONTAINING FEED STREAM - The present invention relates to a process for recycling product streams that have been separated from a hydrocarbon-containing feed stream comprising olefin monomer, olefin co-monomer, hydrocarbon diluent and components such as H | 07-12-2012 |
20120172574 | Ring Opening Polymerisation of Cyclic Carbonates With Organic Catalyst Systems - The present invention discloses a method for polymerising cyclic carbonates by immortal ring-opening polymerisation in the presence of organocatalysts and alcohol, said alcohol acting as initiator and as transfer agent. | 07-05-2012 |
20120157728 | PROCESS FOR THE PRODUCTION OF BIO-NAPHTHA FROM COMPLEX MIXTURES OF NATURAL OCCURRING FATS AND OILS - A process for making a bio-naphtha and optionally bio-propane from a complex mixture of natural occurring fats & oils, wherein
| 06-21-2012 |
20120157638 | POLYMERIZATION PROCESS WITH IMPROVED POLYMER HOMOGENEITY - The present invention relates to a process for the polymerization of an olefin monomer. In particular, the present invention relates to a process for the polymerization of an olefin monomer and one or more optional comonomers in presence of a polymerization catalyst and hydrogen, said process being characterized by an improved control of the hydrogen concentration in the polymerization reactor. In addition, the present invention provides for an improved hydrogen feeding system to a polymerization reactor. Furthermore, the present invention provides for a polymerization reactor comprising such an improved hydrogen feeding system. | 06-21-2012 |
20120151844 | ROTOMOULDED STRUCTURAL PARTS HAVING ASYMMETRICAL LAYERING - This invention discloses a method for preparing rotomoulded articles having asymmetrical layering. | 06-21-2012 |
20120149858 | Controlled Distribution of Active Sites in Ziegler-Natta Catalyst Systems - The present invention provides a method for improving and controlling the activity of Ziegler-Natta catalyst systems. | 06-14-2012 |
20120142983 | PROCESS FOR THE PRODUCTION OF BIO-NAPHTHA FROM COMPLEX MIXTURES OF NATURAL OCCURRING FATS & OILS - Process for making a bio-diesel and a bio-naphtha and optionally bio-propane from a complex mixture of natural occurring fats & oils, wherein
| 06-07-2012 |
20120142982 | USE OF FREE FATTY ACIDS PRODUCED FROM BIO-SOURCED OILS & FATS AS THE FEEDSTOCK FOR A STEAMCRACKER - Use of fatty acids produced from a complex mixture of natural occurring oils & fats and/or of triglycerides deriving from said complex mixture as the feedstock of a steamcracker, by mixing the fatty acids with steam in a steam/feedstock ratio of at least 0.2 kg per kg, a coil outlet temperature of at least 700° C. and an coil outlet pressure of at least 1.2 bara in order to obtain cracking products including bio-ethylene, bio-propylene, bio-butadiene, bio-isoprene, bio-cyclopentadiene and bio-piperylenes, bio-benzene, bio-toluene, bio-xylene and bio-gasoline. | 06-07-2012 |
20120141708 | Bi-Layer Rotomoulding Applications - Bi-layer articles prepared by rotational moulding comprising: a. an internal layer prepared from a composition comprising from 50 to 100 wt % of polyethylene (PE) and from 50 to 0 wt % of functionalised polyolefin and; b. an external layer prepared from polyetherester or saturated polyester or polycarbonate wherein the adhesion between the two layers is achieved by the internal layer composition. | 06-07-2012 |
20120136124 | PROCESS TO PREPARE DI- AND MULTIBLOCK COPOLYMERS - The present invention discloses a process for preparing di-, tri, or multi-block polyester/polycarbonate (co)polymers by ring-opening polymerisation in the presence of a non-toxic catalyst system in combination with either a linear monohydroxy HO—PC—OR, or a linear telechelic dihydroxy HO—PC—OH, or a star polyhydroxy R—(PC—OH)n end-capped polyester/polycarbonate. | 05-31-2012 |
20120132845 | EXPANDABLE VINYL AROMATIC POLYMERS AND PROCESS FOR THE PREPARATION THEREOF - The present invention is an expandable vinyl aromatic polymer which comprises: | 05-31-2012 |
20120101239 | ACTIVATING SUPPORTS WITH CONTROLLED DISTRIBUTION OF OH GROUPS - The present invention relates to a process for preparing an activating support for metallocene complexes in the polymerisation of olefins comprising the steps of:
| 04-26-2012 |
20120101233 | CATALYTIC SYSTEMS FOR IMMORTAL RING-OPENING POLYMERISATION OF CYCLIC ESTERS AND CYCLIC CARBONATES - The present invention discloses new catalyst systems based on complexes of divalent metals supported by chelating phenoxy ligands for immortal ring-opening polymerisation of cyclic esters and cyclic carbonates. | 04-26-2012 |
20120093693 | Multiple Loop Reactor for Olefin Polymerization - The present invention provides a multiple loop reactor suitable for polymerizing olefins comprising at least two interconnected loop reactors, whereby said connection essentially consists of one or more transfer lines suitable for transferring polymer slurry from a reactor to another reactor and whereby said transfer line extends substantially horizontally. The invention further relates to a process for producing olefin polymers in a multiple loop react or according to the invention. The invention also relates to the use of a transfer line for transferring polymer slurry from a reactor to another reactor in a multiple loop reactor comprising at least two interconnected loop reactors, whereby said transfer line extends substantially horizontally. | 04-19-2012 |
20120088892 | PROCESS FOR PRODUCING STEAM USING HEAT RECOVERED FROM A POLYMERIZATION REACTION - The present invention relates to a process for producing steam using heat recovered from a polymerization reaction. In particular, the present invention relates to a process for producing steam using heat recovered from a polymerization reaction for producing polyolefin, comprising the steps of: thermally contacting said polymerization reaction with a cooling fluid such that the cooling fluid removes heat from said reaction, thermally contacting at least part of said cooling fluid with at least one absorption cycle thereby transferring heat from the cooling fluid to said absorption cycle, using said absorption cycle to produce steam from a condensate, wherein the cooling fluid is used as a hot source for heating at least one evaporator and at least one generator comprised in said at least one absorption cycle. The present invention also relates to a process for cooling a polymerization reaction using a process as described herein. Said invention also relates to a polyolefin producing unit. | 04-12-2012 |
20120074039 | UPGRADING LIGHT NAPHTAS FOR INCREASED OLEFINS PRODUCTION - The present invention is a process to upgrade light naphthas comprising branched paraffins and their use as a feedstock in a steam cracking unit, said light naphthas consisting essentially of 90 to 100% by weight of hydrocarbons having at least 5 and up to 8 carbon atoms, said process comprising, | 03-29-2012 |
20120059110 | REFRIGERATOR INTERIOR LINER - The present invention is a refrigerator interior liner made of a rubber modified monovinylaromatic polymer composition comprising: | 03-08-2012 |
20120056128 | Stabilised Composititions Comprising Olefins - The present invention is a composition stabilized against premature polymerization comprising: a) one or more olefinic monomers, b) one or more oxygenated components capable to be converted to peroxides, c) an efficient amount of one or more additives capable to inhibit the polymerization of the olefinic monomers of a), d) optionally an efficient amount of one or more additives capable to inhibit the production of peroxides. In an embodiment to make the stabilized composition, the additives c) and d) are introduced separately into the mixture of a) and b). The oxygenated components capable to be converted to peroxides can be selected among alcohols, aldehydes, cetones, ethers and organic acids. The additive capable to inhibit the polymerization of the olefinic monomers can be a stable free radical or hydroxylamines substituted with at least one alkyl, aryl, alkylaryl, hydroxyalkyl or hydroxylaryl group. The stable free radical is advantageously a stable nitroxide. The additive capable to inhibit the production of peroxides can be selected among the unhindered phenols, the hindered phenols, the aminophenols and the phenylenediamines. | 03-08-2012 |
20120045656 | POLYPROPYLENE COMPOSITION IN BLOWN FILM - The present invention relates to a polypropylene composition comprising a first component being a propylene polymer produced in presence of a metallocene-based catalyst system, and a second component being a random copolymer of propylene and one or more comonomers, said random copolymer being produced in presence of a Ziegler-Natta polymerization catalyst. The polypropylene composition of the present invention is particularly suited for blown film and is characterized by excellent optical properties. Further, the present invention relates to a multilayer film or a laminate comprising such a blown film. Additionally, the present invention relates to a process for producing such a blown film, multilayer film or laminate. | 02-23-2012 |
20120037146 | LOW NOX BURNER - Disclosed is a burner tip to be used in a furnace for the combustion of fuel gas in the combustion zone of a furnace, that comprises a burner tube that has a longitudinal axis and has a dowstream end and an upstream end for receiving the fuel gas. | 02-16-2012 |
20120010362 | METHOD FOR OPTIMIZING ENERGY CONSUMPTION IN AN EXTRUSION PROCESS - The present invention relates to a method for preparing and extruding a bimodal polyethylene product, which comprises a first polyethylene fraction and a second polyethylene fraction having a different molecular weight than the first polyethylene fraction. More specifically, the present invention relates to a method for controlling the specific energy applied on said bimodal polyethylene product by regulating the amount of the polyethylene fraction having the higher molecular weight in said bimodal polyethylene product. According to the present invention regulation of the amount of said polyethylene fraction having the higher molecular weight in said bimodal polyethylene product is obtained by regulating the polymerization conditions for preparing the bimodal polyethylene product, and in particular by adjusting ethylene monomer feed during the polymerization process. | 01-12-2012 |
20110313213 | PURIFICATION OF ALCOHOLS PRIOR TO THEIR USE IN THE PRESENCE OF AN ACID CATALYST - Process for the purification of an alcohol in the course of a process comprising:
| 12-22-2011 |
20110312489 | Fluorinated Alkoxy-Imino Catalyst Components - This invention relates to fluorinated alkoxy-imino metallic complexes and their use in catalyst systems for the polymerisation or oligomerisation of ethylene and alpha-olefins. | 12-22-2011 |
20110306741 | SYNTHESIS OF SUBSTITUTED TETRAHYDROINDENYL COMPLEXES - This invention relates to the synthesis of substituted tetrahydroindenyls and the use of the synthesised complexes in the homo- and co-polymerisation of ethylene and alpha-olefins. | 12-15-2011 |
20110306739 | PREPARATION OF LONG-CHAIN BRANCHED ISOTACTIC POLYPROPYLENE - The present invention discloses a method for preparing long-chain-branched isotactic polypropylene by first oligomerising propylene with a suitable oligomerisation catalyst system and then copolymerising propylene and the oligomer obtained in situ with a mono-aryl-substituted methylene bridged catalyst system. | 12-15-2011 |
20110306736 | Slurry Loop Reactors - An apparatus defined as a set of loop reactors suitable for the polymerization process of a monomer, preferably ethylene and optionally an olefin co-monomer, comprising for each of said reactors: | 12-15-2011 |
20110305858 | POLYETHYLENE AND POLY(HYDROXY CARBOXYLIC ACID) MULTILAYER FILMS - A multilayer film comprising a first layer comprising a poly(hydroxy carboxylic acid) and a second layer adjacent to the first layer comprising more than 50% by weight of polyethylene prepared with a single-site catalyst, preferably a metallocene catalyst. | 12-15-2011 |
20110295050 | Method for Preparing Crystalline Metalloaluminophosphate (MeAPO) Molecular Sieve from Amorphous Materials - A process for obtaining a metalloaluminophosphate (MeAPO) molecular sieve comprising the following steps in the order given:
| 12-01-2011 |
20110288256 | PROCESS TO MAKE ALPHA OLEFINS FROM ETHANOL - The present invention relates to a process to make alpha olefins comprising:
| 11-24-2011 |
20110281053 | Pipes For Transporting Water Containing Chlorine - This invention is related to the preparation of polyethylene pipe resins suitable for transporting water containing chlorine. | 11-17-2011 |
20110263776 | Resin Compositions Comprising Polyolefins, Poly(hydroxy Carboxylic Acid) and Nanoclays - A resin composition comprising a polyolefin, a nanoclay and poly(hydroxy carboxylic acid). The invention also covers a process for preparing a resin composition comprising a polyolefin, a nanoclay and poly(hydroxy carboxylic acid) by (i) blending a poly(hydroxy carboxylic acid) with a nanoclay to form a composite (ii) blending the composite with a polyolefin. The use of poly(hydroxy carboxylic acids) as a compatibiliser to blend nanoclays into polyolefins is also claimed. | 10-27-2011 |
20110263172 | MULTI-COMPONENT POLYOLEFIN ARTICLE COMPRISING HAVING A CONTROLLED DEGRADATION AND A PROCESS FOR THE PRODUCTION OF SAID ARTICLE - A multi-component article with controllable degradation and/or disintegration, comprising:
| 10-27-2011 |
20110251400 | Preparation of Dphenyl-Bridged Substituted Cyclopentadienyil-Fluorenyl Ligands - The present invention discloses efficient methods for preparing substituted cyclopentadienyl-fluorenyl catalyst components having a diphenyl bridge. | 10-13-2011 |
20110251333 | Polypropylene Prepared with a Single-Site Catalyst and Poly(hydroxyl carboxylic acid) Blends - A resin composition comprising at least 0.1% by weight of poly(hydroxy carboxylic acid) and at least 50% by weight of polypropylene prepared with a single-site catalyst, preferably with a metallocene catalyst. | 10-13-2011 |
20110230627 | METHOD FOR OPTIMISING THE SUPPLY OF CATALYST SLURRY TO A POLYMERIZATION REACTOR - The present invention relates to a method for optimizing the supply of a catalyst slurry during a polymerization process for preparing a polyolefin in a polymerization reactor ( | 09-22-2011 |
20110224338 | METHOD FOR ADDITIVATING POLYMERS IN ROTOMOULDING APPLICATIONS - This invention relates to a method for additivating polymer resins with antioxidants and antiUV stabilsers. It is particularly suitable for resins used rotomoulding applications. | 09-15-2011 |
20110213087 | CHEMICAL BLENDS OF POLYOLEFINS AND POLY(HYDROXY CARBOXYLIC ACID)S - A process is described for obtaining a chemical blend of a polyolefin with a poly(hydroxy carboxylic acid) by mixing poly(hydroxy carboxylic acid) with at least one polyolefin in the presence of a compatibilising compound having at least one polymerisable double bond and at least one electrophilic functional group. The invention also relates to the chemical blend obtainable according to this process, as well as the use of the compatibilising compound to obtain chemical blends of polyolefin with poly(hydroxy carboxylic acid). | 09-01-2011 |
20110201861 | Process for Making Crystalline Metallosilicates - The present invention relates to a process for making a crystalline metallosilicate composition and comprising crystallites having an inner part (the core) and an outer part (the outer layer or shell) such that: | 08-18-2011 |
20110201813 | Catalyst Components Based on Ferricinium Complexes Used for Olefin Polymerization - The present invention discloses catalyst components based on ferricinium ligands, their method of preparation and their use in the polymerisation of olefins. | 08-18-2011 |
20110196183 | Method for Crystalline Preparing Metalloaluminophosphate (MeAPO) Molecular Sieves - The invention relates to a process for obtaining a metalloaluminophosphate (MeAPO) molecular sieve comprising the following steps in the order given:
| 08-11-2011 |
20110190561 | Process for Making Crystalline Metallosilicates - The present invention relates to a process for making a crystalline metallosilicate composition comprising crystallites having an inner part (the core) and an outer part (the outer layer or shell) such that:
| 08-04-2011 |
20110190459 | Process to Kill a Catalyzed Olefin Polymerization - Process to kill a continuous catalyzed olefin liquid phase polymerization in which the catalyst is a Ziegler-Natta or a metallocene catalyst, wherein, a predetermined amount of killing agent is injected into the reactor during at least twice the cycle time of the reactor. | 08-04-2011 |
20110189916 | BIOCOMPONENT FIBERS WITH AN EXTERIOR COMPONENT COMPRISING POLYPROPYLENE - The present invention relates to bicomponent fibers with improved bonding properties. In particular, the present invention relates to bicomponent fibers comprising an exterior component, which in turn comprises a polypropylene that has been degraded from a first melt flow index MFI | 08-04-2011 |
20110184143 | Catalytic Process for Polymerising Cyclic Carbonates Issued from Renewable Resources - This invention relates to the polymerisation of five-, six- or seven-membered cyclic carbonates by ring-opening polymerisation in the presence of a system comprising a metal salt such as triflate, triflimidate, acetylacetonate or carboxylate and an alcohol. | 07-28-2011 |
20110184136 | FIBRES AND NONWOVEN PREPARED FROM POLYPROPYLENE HAVING A LARGE DISPERSITY INDEX - The present invention relates to a process for the production of fibres and filaments with polypropylene having a broad polydispersity index. The present invention also relates to high elongation nonwoven prepared from such fibres and filaments. It further relates to films and laminates prepared from high elongation nonwoven. | 07-28-2011 |
20110184133 | ACTIVATING SUPPORTS BASED ON PHOSPHONIUM COMPLEXES - The present invention relates to the covalent anchorage of non-coordinating anions on mineral supports to prepare activating supports for the polymerisation of ethylene and alpha-olefins and wherein the activating species is provided by a phosphonium-borate or phosphonium alane pair. The invention also discloses the concomitant covalent anchorage of zwitterionic systems containing both the non-coordinating anion and the counter cation parts of the activating supports. | 07-28-2011 |
20110184115 | Reinforced and Conductive Resin Compositions Comprising Polyolefins and Poly(hydroxy carboxylic acid) - A resin composition comprising a polyolefin, carbon nanotubes and poly(hydroxy carboxylic acid). The invention also covers a process for preparing a resin composition comprising a polyolefin, carbon nanotubes and poly(hydroxy carboxylic acid) by (i) blending a poly(hydroxy carboxylic acid) with carbon nanotubes to form a composite (ii) blending the composite with a polyolefin. The use of poly(hydroxy carboxylic acids) as a compatibiliser to blend carbon nanotubes into polyolefins is also claimed. | 07-28-2011 |
20110183568 | FIBERS AND NONWOVENS WITH INCREASED SURFACE ROUGHNESS - The present invention relates to fibers having an increased surface roughness. Further, the present invention relates to nonwovens, laminates and composites comprising such fibers. Additionally, the present invention relates to a process for producing such fibers, nonwovens, laminates and composites. | 07-28-2011 |
20110178259 | Process to Make Olefins from Organics - The present invention relates to a process to make light olefins, in a combined XTO-OC process, from an oxygen-containing, halogenide-containing or sulphur-containing organic feedstock comprising:
| 07-21-2011 |
20110178258 | Supported Ionic Liquids or Activating Supposrts - The present invention relates to the covalent anchorage of non-coordinating anions on mineral supports to prepare supported ionic liquids and to their use as activating supports for the polymerisation of ethylene and alpha-olefins. The invention also discloses the concomitant covalent anchorage of zwitterionic systems containing both the non-coordinating anion and the counter cation parts of the ionic liquids and of the activating supports. | 07-21-2011 |
20110177272 | Heterophasic Propylene Copolymer with Improved Properties for Injection Molding Applications - The present invention concerns a heterophasic propylene copolymer of high melt flow for injection molding, which comprise a propylene polymer matrix and a rubber. The heterophasic propylene copolymers of the present invention are characterized by a high viscosity of the rubber phase and a well-defined ratio of the intrinsic viscosities of the rubber phase and the propylene polymer matrix, thus resulting in improved mechanical properties. The present invention further relates to a process for the production of such heterophasic propylene copolymers, their use and articles produced with them. | 07-21-2011 |
20110172322 | Branched Low and Medium Density Polyethylene - The invention relates to a long chain branched medium and low density polyethylene having a combination of the following properties: a) a density of from 0.910 to 0.945 g/cm | 07-14-2011 |
20110166303 | Process to Make Olefins from Oxygenates - The present invention relates to a process to make light olefins, in a combined XTO-OC process, from an oxygen-containing, halogenide-containing or sulphur-containing organic feedstock comprising: | 07-07-2011 |
20110166302 | Method for Transforming a Single Reactor Line - The present invention discloses a method for transforming a single reactor line into a double reactor line wherein the existing single reactor line is equipped with a flash tank for separating the solid polymer product from the flash vapour and wherein the vapour is sent to a system of at least two separating columns allowing the separation of its constituents into monomer, diluent and comonomer. | 07-07-2011 |
20110166294 | Polyethylene and Poly(hydroxyl carboxylic acid) Blends - A resin composition comprising at least 0.1% by weight of poly(hydroxy carboxylic acid) and at least 50% by weight of polyethylene prepared with a single-site catalyst, preferably a metallocene. | 07-07-2011 |
20110152485 | Polymerisation Catalyst System based on Oxime-Ether Ligands - The present invention discloses metallic complexes based on oxime-ether ligand and their use in oligomerisation and in polymerisation of ethylene and alpha-olefins. | 06-23-2011 |
20110144270 | ADDITIVISING POLYMER POWDERS - The invention provides an apparatus for introducing additives onto a polymer powder. | 06-16-2011 |
20110142720 | METHOD FOR IMPROVING A POLYMERIZATION REACTION BY TAKING OUT AND ANALYSING A SAMPLE - The invention relates to a device for taking out and analysing a sample from a polymerisation reactor comprising one or more sample conduits ( | 06-16-2011 |
20110137096 | Process to Make Olefins from Ethanol - The present invention relates to a process for the conversion of ethanol to make essentially ethylene and propylene, comprising:
| 06-09-2011 |
20110135918 | Rotolined Articles - The present invention relates to the field of steel pipes and vessels rotolined with metallocene-produced polyethylene. | 06-09-2011 |
20110124939 | Dehydration of Alcohols on Crystalline Silicates - The present invention relates to a process for the dehydration of at least an alcohol to make at least an olefin, comprising: | 05-26-2011 |
20110124934 | Process for Making Crystalline Metallosilicates - The present invention provides a method for preparing a metallosilicate of MFI type, wherein organic templates, seeding techniques, using low aliphatic alcohols miscible with water or homogeneous starting solutions are not required. | 05-26-2011 |
20110124828 | Loop Reactor Suitable for Olefin Polymerization with Improved Product Removal Means - The present invention relates to a loop reactor suitable for olefin polymerization process comprising:
| 05-26-2011 |
20110124798 | Heterophasic Propylene Copolymer with Improved Creep Behavior - The present invention concerns heterophasic propylene copolymers, comprising a propylene homopolymer (PPH) and an ethylene-propylene rubber (EPR), having a very broad molecular weight distribution, a well-defined total ethylene content and a specific intrinsic viscosities of the ethylene-propylene rubber (EPR). The invention further concerns the process to produce such heterophasic propylene copolymers. The heterophasic propylene copolymers of the present invention are particularly suited for pails, pallets, IBCs and crates. In particular, the heterophasic propylene copolymers of the present invention are characterized by an improved resistance to creep. | 05-26-2011 |
20110120498 | Process for Purging an Extrusion Apparatus - The present invention relates to an improved process of purging an extrusion apparatus. The purging process is improved by adjusting the type of polymer material used to purge the extrusion apparatus and by adjusting the purging flow rate. | 05-26-2011 |
20110120058 | POLYETHYLENE SQUEEZABLE POUCHES - The invention relates to a process for producing polyethylene aseptic squeezable pouches. The invention also covers said pouches and their use for medical packaging applications. | 05-26-2011 |
20110118518 | Process for Obtaining a Catalyst Composite - A process for obtaining a catalyst composite comprising the following steps: | 05-19-2011 |
20110118425 | Process for Obtaining Catalyst Composites Comprising MeAPO and Their Use in Conversion of Organics to Olefins - The present invention is a mixture comprising by weight 0.01 to 30% of at least one medium or large pore crystalline silicoaluminate, silicoaluminophosphate materials or silicoaluminate mesoporous molecular sieves (co-catalyst) (A) for respectively 99.99 to 70% of at least a MeAPO molecular sieve. | 05-19-2011 |
20110112273 | Group 3 Post-Metallocene Complexes Based on Bis(Naphthoxy)Pyridine and Bis(Naphthoxy)ThioPhene Ligands for the Ring-Opening Polymerisation of Polar Cyclic Monomers - The present invention relates to the use of group 3 post-metallocene complexes based on sterically encumbered bis(naphthoxy)pyridine and bis(naphthoxy)thiophene ligands in the ring-opening polymerisation of polar monomers such as, for examples, lactones, lactides, cyclic carbonates. | 05-12-2011 |
20110111151 | Leisure Articles and Cars Prepared by Multilayer Rotational Moulding - This invention relates to the field of multilayer articles having reinforced structural properties prepared by rotational moulding wherein the external and internal skin layers are prepared from polyethylene resin and the intermediate layer is prepared from foamed polyethylene. | 05-12-2011 |
20110105815 | Process to Make Olefins from Ethanol - The present invention relates to a process for the conversion of ethanol to make essentially ethylene and propylene, comprising:
| 05-05-2011 |
20110105704 | Sterically Emcumbered Bidentate and Tridentate Naphthoxy-Imine Metallic Complexes - The present invention discloses post-metallocene complexes based on sterically encumbered bi- and tri-dentate naphthoxy-imine ligands. It also relates to the use of such post-metallocene complexes in the oligomerisation of ethylene to selectively prepare vinyl-end capped linear alpha-olefins. | 05-05-2011 |
20110105701 | Dynamic Pressure Control in Double Loop Reactor - The present invention discloses a slurry loop reactor comprising at least two loop reactors connected in series and wherein the line connecting the two loops is subject to a dynamic pressure difference. | 05-05-2011 |
20110104447 | Heterophasic Propylene Copolymer for Corrugated Sheet and Cast Film Applications - The present invention concerns heterophasic propylene copolymers, comprising a propylene homopolymer (PPH) and an ethylene-propylene rubber (EPR), having a broad molecular weight distribution and a well-defined total ethylene content and a specific ratio of the intrinsic viscosities of the ethylene-propylene rubber (EPR) and the propylene homopolymer (PPH), η | 05-05-2011 |
20110092664 | Monomers Issued from Renewable Resources and Process for Polymerising Them - This invention relates to the synthesis of polycarbonates prepared from carbonate monomers derived from the biomass in the presence of a system comprising an organometallic transfer agent and alcohol. It also relates to the polymers resulting from these cyclic compounds. | 04-21-2011 |
20110086568 | SPUNBOND NONWOVENS MADE FROM HIGH-CRYSTALLINITY PROPYLENE POLYMER - The present invention relates to fibers comprising at least 98 wt % of a propylene polymer having, in particular, a specific molecular weight distribution M | 04-14-2011 |
20110081818 | Fibers and Nonwovens with Improved Mechanical and Bonding Properties - The present invention relates to fibers, particularly to as-spun fibers, having improved properties, in particular improved bonding performance and mechanical properties. In particular, the present invention relates to fibers comprising a metallocene random copolymer of propylene and one or more comonomers, said metallocene random copolymer having a broader molecular weight distribution. The present invention further relates to nonwovens comprising such fibers and to a process for producing such fibers and nonwovens. The fibers and the nonwovens of the present invention are characterized by improved properties, in particular improved bonding performance and mechanical properties, when compared to the prior art fibers and nonwovens. | 04-07-2011 |
20110081817 | Fibers and Nonwovens with Improved Mechanical Properties - The present invention relates to fibers, particularly to as-spun fibers, having improved properties, in particular improved mechanical properties. In particular, the present invention relates to fibers comprising a metallocene polypropylene having a broader molecular weight distribution. The present invention further relates to nonwovens comprising such fibers and to a process for producing such fibers and nonwovens. The fibers and the nonwoven of the present invention are characterized by improved properties, in particular improved mechanical properties, when compared to the prior art fibers and nonwovens. | 04-07-2011 |
20110071264 | Process for Obtaining Modified Molecular Sieves - The invention covers a process for obtaining an alkaline earth or rare earth metal-P-modified molecular sieve (M-P-modified molecular sieve) comprising the following steps:
| 03-24-2011 |
20110059278 | SOLID STATE PROPERTIES OF POLYETHYLENE PREPARED WITH TETRAHYDROINDENYL-BASED CATALYST SYSTEM - Rotomoulded articles and methods of forming the same are described herein. The rotomoulded articles generally have a permeability of less than 1 g/day. The rotomoulded articles generally include polyethylene obtained by injecting into a reactor a catalyst system including a metallocene catalyst component of specific formula and an activating agent; injecting into the reactor ethylene monomer at a concentration of at least 6.5 wt %; injecting an amount of hydrogen such that a ratio of hydrogen to ethylene (H | 03-10-2011 |
20110054110 | Blend for Use in Automobile Application - The present invention relates to a blend comprising metallocene polypropylene and an elastomer for automobile parts, characterized in that said blend has low volatile organic compounds emissions. The invention also relates to the use of said blend in parts for automobiles. | 03-03-2011 |
20110046323 | Process for Monomer Recovery From a Polymerization Process - The present relates to a process for optimizing the recovery of unreacted monomers from a polymerization process, wherein said process comprises the steps of
| 02-24-2011 |
20110040133 | Production of Light Olefins and Isoprene from Butane - Process for the selective production of ethylene, propylene and isoprene from light hydrocarbons comprising: a) fractionating a butane fraction in a de-isobutanizer to obtain an enriched iso-butane fraction and an enriched normal-butane fraction, b) cracking said normal-butane fraction and optionally an ethane fraction, optionally a propane fraction, in a non-catalytic cracking zone to produce an olefin rich stream, c) treating said olefin rich stream in a separating section to recover: an ethylene stream, a propylene stream, d) transforming the recovered iso-butane of step a) into iso-butene or t-butyl hydroperoxide or partly into iso-butene and partly into t-butyl hydroperoxide, e) optionally reacting iso-butene of step d), if any, with formaldehyde to make isoprene, f) optionally reacting t-butyl hydroperoxide of step d), if any, with an olefin to give an epoxide and t-butanol and further separating t-butanol, or optionally having t-butyl hydroperoxide of step d), if any, decomposed to t-butanol and reacted with formaldehyde to give isoprene, or reacting a part of the t-butyl hydroperoxide of step d) with an olefin and having the remaining part decomposed to t-butanol and reacted with formaldehyde to give isoprene, g) dehydrating the t-butanol recovered at step f), if any, into iso-butene and reacting said iso-butane with formaldehyde to make isoprene, or reacting directly the t-butanol recovered at step f), if any, with formaldehyde to make isoprene, or dehydrating the t-butanol recovered at step f), if any, into iso-butene, hydrogenating said iso-butene to iso-butane and oxidizing said iso-butane into t-butyl hydroperoxide, and recycling said t-butyl hydroperoxide, or dehydrating the t-butanol recovered at step f), if any, into iso-butene, then disproportionating said iso-butene and propylene recovered at step c) (or 2-butene recovered at step c)), separating an isoamylene stream and converting the isoamylene into isoprene by dehydrogenation, or making any combination of above routes of said step g), h) optionally disproportionating iso-butene of step d), if any, and propylene recovered at step c) (or 2-butene recovered at step c)), separating an isoamylene stream and converting the isoamylene into isoprene by dehydrogenation, at least one of steps e), f) and h) is not optional. | 02-17-2011 |
20110034653 | Catalyst Components Based on Fulvene Complexes - The present invention discloses metallic complexes based on hydroxyl-carbonyl fulvene ligands, their method of preparation and their use in the oligomerisation or polymerisation of ethylene and alpha-olefins. | 02-10-2011 |
20110034652 | CATALYST COMPONENTS BASED ON FERROCENYL COMPLEXES USED FOR OLEFIN POLYMERISATION - The present invention discloses catalyst components based on ferrocenyl ligands, their method of preparation and their use in the polymerization of olefins. | 02-10-2011 |
20110034649 | PROCESS FOR THE PRODUCTION OF A PROPYLENE POLYMER HAVING A BROAD MOLECULAR WEIGHT DISTRIBUTION AND A LOW ASH CONTENT - The present invention relates to a process for the production of propylene homo- and copolymers having a broad molecular weight distribution and a low ash content, with “ash” denoting aluminium as well as residues of catalyst, cocatalyst or any additive, such as titanium (Ti) or silicium (Si) derivatives, used in the production of propylene polymers. The propylene polymers of the present invention are useful to make films, such as capacitor films, as well as fibers and nonwovens, such as for example staple fibers, spunbond nonwovens, meltblown nonwovens. | 02-10-2011 |
20110034645 | Process for the Production of a Bimodal Polypropylene Having Low Ash Content - The present invention relates to a process for making low ash propylene homo- or copolymers with improved properties, with “ash” denoting aluminium as well as residues of catalyst, cocatalyst or any additive, such as titanium (Ti) and silicium (Si) derivatives, used in the production of propylene polymers. The propylene polymers of the present invention are useful to make films, such as capacitor films, as well as fibers and nonwovens, such as for example staple fibers, spunbond nonwovens or meltblown nonwovens. | 02-10-2011 |
20110017749 | Mulitlayer Rotomoulded Articles - This invention relates to the field of multilayer articles prepared by rotational moulding with a robotised rotomoulding machine wherein the mould is under direct heating. | 01-27-2011 |
20110015353 | Process for Preparing a Polyethylene Resin in a Double Loop Reactor with a Mixture of Bis-indenyl and Bis-tetrahydroindenyl - The present invention discloses a process for preparing polyethylene resins in a double loop reactor wherein the catalyst system comprises a bis-tetrahydroindenyl and a bis-indenyl catalyst component deposited on the same support. It also discloses the polyethylene resins obtained by the process and their use to prepare films having a good compromise of haze, processing and mechanical properties. | 01-20-2011 |
20110015331 | Additivising Carbon Black to Polymer Powder - The present invention concerns an improved method for introducing free carbon black additive into a polymer powder or fluff, and in particular into polyethylene powder. | 01-20-2011 |
20110009582 | Preparation of Activating Supports - The present invention discloses a method for preparing an activating support and its use to activate metallocene or post-metallocene catalyst component for use in the oligomerisation and polymerisation of ethylene and alpha-olefins. | 01-13-2011 |
20100332433 | Predictive Model for Density and Melt Index of Polymer Leaving Loop Reactor - The present invention discloses a method for predicting the melt index and density of the polymer in terms of the operating conditions in the reactor and vice-versa, to select the operating conditions necessary to obtain the desired product specifications. | 12-30-2010 |
20100331500 | REDUCED BLOCKAGE WHEN TRANSFERRING POLYMER PRODUCT FROM ONE REACTOR TO ANOTHER - This invention is related to the field of olefin polymerisation in double loop reactors and especially to the polymerisation of olefins with very active catalyst systems. It discloses a method for reducing blockage when transferring polymer product from the first loop to the second loop of a double loop reactor. | 12-30-2010 |
20100324738 | Method for Optimising the Transition from One Grade to Another - The present invention relates to the polymerisation of olefin monomers in a slurry loop reactor and to a model for determining and optimising the changes in operating conditions that need to be applied when changing from one polymer grade to another. | 12-23-2010 |
20100323142 | Pipes for Transporting Water Containing Chlorine - This invention is related to the preparation of polyethylene pipe resins suitable for transporting water containing chlorine. | 12-23-2010 |
20100311930 | New Tridentate Ligand Compounds with Imino Furan Units, Method for Manufacturing Said Compounds, and their use in the Preparation of Catalysts for the Homopolymerisation and Copolymerisation of Ethylene and Alpha-Olefins - The present invention relates to new tridentate ligand compounds with imino furan units, to a method for manufacturing said compounds and to their use in the preparation of catalysts for the homopolymerisation or copolymerisation of ethylene and alpha-olefins. | 12-09-2010 |
20100307597 | Pipes for Transporting Water Containing Chloramine - This invention is related to the preparation of polyethylene pipe resins suitable for transporting hot and cold water containing chloramine. | 12-09-2010 |
20100307492 | DEVICE FOR DISPENSING A FLUID PRODUCT - A fluid dispenser device comprising: a body ( | 12-09-2010 |
20100298122 | Polymerisation of Ethylene and Alpha Olefins with Single Site Catalysts having an Anionic Scorpion-Like Ligand - The present invention discloses single site catalyst systems having anionic scorpion-like three dimensional structure, that are suitable for oligomerising or polymerising ethylene and alpha-olefins. | 11-25-2010 |
20100297459 | Process for Producing a Polyethylene-Polypropylene Multilayer Blown Film - The present invention relates to a process for producing a multilayer film comprising at least one polyethylene (except high pressure polyethylene) and polypropylene layer, wherein the adhesion between the polyethylene and polypropylene is enhanced without the use of any tie layer by processing the film with a freezing time of less than ten seconds. | 11-25-2010 |
20100292417 | Phosphorus Modified Molecular Sieves, Their Use in Conversion of Organics to Olefins - The present invention is a phosphorous modified zeolite (A) made by a process comprising in that order:
| 11-18-2010 |
20100280289 | Process for the Selective Oxidation of Methane - The present invention is a process for converting methane to methanol, comprising: feeding methane and gaseous air or oxygen or gaseous air enriched with oxygen to a reactor under an elevated pressure; | 11-04-2010 |
20100280207 | Method for Optimizing energy Efficiency in a Polymerization Process - The present invention relates to a process for cooling a polymerization reaction for producing polyolefin comprising the steps of:
| 11-04-2010 |
20100273961 | Slurry Loop Reactors - Reactor systems suitable for the polymerization of an olefin monomer including first and second loop reactors effective for the polymerization of an olefin monomer and polymers formed therefrom are described herein. Each of said reactors generally include at least one settling leg connected to said reactor for receiving polymer slurry from said reactor and sequentially discharging settled polymer from said at least one settling leg to withdraw said polymer slurry from said reactor; a transfer line extending from the outlet at least one first reactor settling leg to an inlet for said second loop reactor; a flash line extending from said transfer line at a valve location intermediate said first reactor settling leg and said inlet for said second reactor; and a multiway valve located in said transfer line at said valve location intermediate said first reactor settling leg and the inlet to said second reactor and having one position in which said multiway valve provides for the flow of polymer slurry through said transfer line to said second reactor and another position in which said first reactor settling leg is connected to said flash line for the discharge of polymer slurry from said first reactor settling leg to said flash line and removal of said polymer from said polymer system. | 10-28-2010 |
20100267904 | Method and Device for Optimising Catalyst Supply to a Polymerisation Reactor - Methods for supplying a catalyst to an ethylene slurry loop polymerization reactor and polymers formed therefrom are described herein. The method generally includes preparing a catalyst slurry in a preparation vessel wherein the slurry includes a hydrocarbon diluent liquid which contains a Ziegler-Natta catalyst; supplying the catalyst slurry from the preparation vessel to a buffer vessel; withdrawing the catalyst slurry from the buffer vessel and supplying the catalyst slurry to a slurry loop polymerization reactor in which ethylene is polymerized; mixing a co-catalyst with the Ziegler Natta catalyst in the slurry prior to the supplying of the catalyst slurry to the slurry loop polymerization reactor; and controlling the transfer of catalyst slurry from the preparation vessel to the buffer vessel and the withdrawal of catalyst slurry from the buffer vessel to maintain the level of catalyst slurry in the buffer vessel substantially constant relative to the level of catalyst slurry in the preparation vessel. | 10-21-2010 |
20100264014 | Process for the Separation of a Hydrocarbon-Containing Feed Stream - The present invention relates to a process for the separation by distillation of a hydrocarbon-containing feed stream comprising olefin monomer, co-monomer and hydrocarbon diluent. The present invention also relates to a distillation system comprising a distillation column for carrying out the process according to the invention. | 10-21-2010 |
20100262271 | Method for Minimising Shrinkage and Warpage in Rotomoulding Applications - The present invention discloses a method for mapping and controlling the three-dimensional shrinkage and warpage occurring in rotomoulding applications. | 10-14-2010 |
20100261855 | Method of Operating a High Pressure Ethylene Polymerisation Unit - The invention relates to a method of operating a high pressure ethylene polymerisation unit comprising a tubular reactor, the method characterised in that the electrical conductivity of the aqueous cooling medium is monitored in at least one location. Furthermore, the invention also covers a high pressure ethylene polymerisation unit comprising a tubular reactor, the unit characterised in that one or more cooling circuits comprise an electrical conductivity metre. The use of such a polymerisation unit is also disclosed. | 10-14-2010 |
20100249347 | METALLOCENE CATALYST COMPONENTS SUPPORTED ON ACTIVATING SUPPORTS - The present invention discloses a catalyst system consisting of a mono- or di-fluorinated metallocene catalyst component of formula and a fluorinated activating support. | 09-30-2010 |
20100234662 | Process for Reducing Carbon Monoxide in Olefin-Containing Hydrocarbon Feedstocks - A process for removing carbon monoxide from an olefin-containing hydrocarbon feedstock comprising the steps of: a) passing the said hydrocarbon feedstock over a material comprising nickel deposited on a support material wherein said nickel is present as both nickel oxide and metallic nickel; and b) recovering a hydrocarbon stream having a substantially reduced carbon monoxide content. | 09-16-2010 |
20100234544 | Process for the Polymerisation of Olefins - A process for the polymerisation of olefins comprising the steps of: a) passing an olefin-containing hydrocarbon feedstock over a sorbent material comprising nickel deposited on a support material wherein said nickel is present as both nickel oxide and metallic nickel; b) converting at least part of the olefins contained in said hydrocarbon feedstock into a polymer over one or more metallocene catalysts; and c) recovering the polymer product. | 09-16-2010 |
20100233927 | Metallocene Polypropylene Fibers and Nonwovens with Improved Mechanical Properties - The present invention relates to as-spun fibers and filaments comprising a nucleated metallocene polypropylene. Said fibers and filaments are characterized by improved mechanical properties. The present invention also relates to nonwovens made with such fibers and filaments and to a process for making such fibers and filaments. | 09-16-2010 |
20100216629 | Method for Preparing Metalloalumino-Phosphate (MEAPO) Molecular Sieve - The present invention also relates to a method for preparing metalloaluminophosphate (MeAPO) molecular sieve said method comprising:
| 08-26-2010 |
20100213638 | Optimisation in Rotomoulded Applications - The present invention discloses a method for optimising the production of rotomoulded articles according to the desired properties of the end product by identifying and quantifying the processing variables that have an impact on each property of the finished rotomoulded article. | 08-26-2010 |
20100197879 | DEVICE AND METHOD FOR INJECTING FLUID INTO A ROTATING FLUIDIZED BED - A device for discharging, through a central rotating chimney, fluids from a fluidized bed driven in a rotational movement in the same direction by the rotation of the outer circular wall of a reaction chamber and/or by injection of part of these fluids along the circular wall of a fixed or rotating chamber, and methods for catalytic polymerization, drying, or other treatments of solid particles in suspension in a rotating fluidized bed or for cracking or other catalytic conversions of fluids using this device. | 08-05-2010 |
20100184933 | MTO Process Based on MEAPO Molecular Sieves Combined with an OCP Process to Make Olefins - The present invention relates to a process to make light olefins from an oxygen-containing, halogenide-containing or sulphur-containing organic feedstock comprising:
| 07-22-2010 |
20100179055 | ACTIVATING SUPPORTS WITH NON-METALLOCENE COMPLEXES - The present invention discloses an active supported catalyst system comprising: a) an iron-based non-metallocene catalyst component; b) an alkylating agent; c) an activating functionalised and fluorinated support. It also discloses a method for preparing said active supported catalyst system and its use in the polymerisation of olefins. | 07-15-2010 |
20100162816 | Process to Monitor Unwanted Formation of a Polymer having Internal Strain by Acoustic Emission Analysis - The present invention relates to a process to monitor unwanted formation of a polymer having internal mechanical strain wherein acoustic emission generated by said polymer formation is detected by one or more acoustic sensors attached to a piece of equipment. | 07-01-2010 |
20100145120 | Production of Propylene and Ethylene from Butane and Ethane - The present invention relates to a process for the selective production of olefins from light hydrocarbons comprising:
| 06-10-2010 |
20100144982 | Polyolefin Production Using High Olefin Concentration - Methods for polymerization of an olefin monomer and polymers formed therefrom are described herein. The methods generally include introducing an olefin monomer and a diluent carrier liquid into a polymerization reactor, supplying at least one polymerization catalyst system to said polymerization reactor circulating said diluent liquid in said olefin monomer within said reactor while polymerizing said olefin monomer in the presence of said catalyst system to produce a slurry of polymer fluff particle in said diluent carrier liquid, recovering polymer particles from said polymerization reactor, initiating a localized pressure drop in said reactor to produce a pressure wave in which the pressure varies with time, measuring said pressure wave and characterizing said pressure wave as either a hydraulic pressure curve or a non-hydraulic pressure curve which is characteristic of a gas being present in said slurry and in response to the characteristic of said pressure curve as being a non-hydraulic pressure curve reducing the olefin monomer concentration in said reactor. | 06-10-2010 |
20100144515 | FLUORINATED DIALKOXY-DIIMINO CATALYST COMPONENTS - This invention relates to the fluorinated dialkoxy-diimine metal complexes and their use in catalyst system for the polymerisation or oligomerisation of ethylene and alpha-olefins. | 06-10-2010 |
20100120999 | Olefin Polymerization Process with Optimized Product Discharge - The present invention relates to a polymerization process for producing olefin polymers in a loop reactor comprising the steps on introducing into the loop reactor one or more olefin reactants, polymerization catalysts and diluents, and while circulating said reactants, catalysts and diluents, polymerizing said one or more olefin reactants to produce a polymer slurry comprising essentially liquid diluent and solid olefin polymer particles, said process further comprising one or more cycles of: (a) allowing said polymer slurry to settle in one or more setting legs connected to said reactor, and (b) discharging from a setting leg a predetermined volume of polymer slurry substantially equal to the volume of polymer slurry settled in said settling leg since its previous discharge. | 05-13-2010 |
20100113734 | PROCESS FOR PRODUCING POLYLACTIDE-URETHANE COPOLYMERS - A process for producing polylactide-urethane copolymers, which comprises the step of contacting a polylactide having terminal hydroxyl groups, produced by contacting at least one lactide monomer with a diol or diamine, with a diisocyanate compound optionally in the presence of a second diol or diamine in the presence of a catalytic system under polymerisation conditions characterised in that the polylactide and the polylactide-urethane copolymers are produced by reactive extrusion. | 05-06-2010 |
20100113707 | Process for Reducing Residuals Content in Vinyl Aromatic Polymers - The present invention relates to a process for reducing residuals content in a vinyl aromatic polymer, said residuals comprising essentially unpolymerized vinyl aromatic monomer, wherein the vinyl aromatic polymer in the molten state is brought in contact with a solid in powder capable to catalyze the alkylation of said residual vinyl aromatic monomer on the vinyl aromatic polymer. | 05-06-2010 |
20100105274 | Polypropylene Fibers and Spunbond Nonwoven with Improved Properties - The present invention relates to a process for the production of polypropylene fibers and polypropylene spunbond nonwoven comprising a degradation step, wherein the melt flow of the polypropylene is increased, and a fiber or filament extrusion step. The present invention also relates to the fibers and nonwoven produced with said process and to composites and laminates comprising said fibers and nonwoven. | 04-29-2010 |
20100076240 | Production of Olefins - A process for converting a hydrocarbon feedstock to provide an effluent containing light olefins, the process comprising passing a hydrocarbon feedstock, the feedstock containing at least 25 wt % C | 03-25-2010 |
20100069585 | Chromium-Based Catalysts - The present invention provides a process for preparing a supported chromium-based catalyst for the production of polyethylene comprising the steps of a) providing a silica-based support having a specific surface area of at least 250 m | 03-18-2010 |
20100063230 | CATALYST COMPONENTS BASED ON FERRICINIUM COMPLEXES USED FOR OLEFIN POLYMERISATION - The present invention discloses catalyst components based on ferricinium ligands, their method of preparation and their use in the polymerisation of olefins. | 03-11-2010 |
20100063229 | Polymerisation of Ethylene and Alpha-Olefins with Pyrrol-Iminophenol Complexes - The present invention relates to the field of single site catalyst systems based on pyrrol-iminophenol, pyrrol-iminoalcohol or pyrrol-iminoamine complexes and suitable for oligomerising or homo- or co-polymerising ethylene and alpha-olefins. | 03-11-2010 |
20100056736 | Controlled Distribution of Stereospecific Sites in Ziegler-Natta Catalyst Systems - This invention relates to an improved method for improving the tacticity of Ziegler-Natta catalyst systems and for controlling the behaviour of the active stereospecific sites. | 03-04-2010 |
20100041825 | Method and System for Degassing Polymer Powder - The present invention relates to a method for degassing polymer powder comprising flushing the polymer powder in a first chamber with a first flow of flushing gas, transferring the polymer powder into a second chamber and flushing the polymer powder with a second flow of flushing gas in said second chamber. The present invention also relates to a system suitable for carrying out this method. | 02-18-2010 |
20100035035 | High Clarity Easy Tear Multilayer Films - The invention discloses high clarity multilayer films that are easy to tear in the transverse direction, wherein the core layer is made of a blend of from 5 to 50 wt % of crystal polystyrene and from 95 to 50 wt % of transparent styrene-butadiene block copolymer (5-40 wt % 1,3-butadiene, 60-95 wt % styrene) and the outer layers comprise from 85 to 100 wt % of a metallocene catalysed polyethylene (density:0.915-0.960 g/cm | 02-11-2010 |
20100035009 | POLYOLEFIN COMPOSITION FOR INJECTION STRETCH BLOW MOLDING - The present invention relates to an injection-stretch blow molding process (ISBM) for the manufacture of an impact-resistant container with good optical properties from a polyolefin composition comprising a polypropylene and a polyethylene produced with a metallocene-based catalyst. | 02-11-2010 |
20100029472 | Fluorinated Alkoxy-Imino Catalyst Components - This invention relates to fluorinated alkoxy-imino metallic complexes and their use in catalyst systems for the polymerisation or oligomerisation of ethylene and alpha-olefins. | 02-04-2010 |
20100029468 | Controlled Distribution of Active Sites in Ziegler-Natta Catalyst Systems - The present invention provides a method for improving and controlling the activity of Ziegler-Natta catalyst systems. | 02-04-2010 |
20100016538 | POLYLACTIDE-URETHANE COPOLYMERS - A polylactide-urethane copolymer obtainable by a process, which comprises the step of contacting:
| 01-21-2010 |
20100016523 | Method for Making a Transition between Polymer Grades - The present invention relates to a method of transition between polymer grades in a polymerisation process comprising polymerising at least one monomer in at least a first reactor and a second reactor connected to each other in series, wherein the monomer feed in the first reactor is maintained essentially constant during the transition. | 01-21-2010 |
20100013129 | STRETCHING/BLOWING CONDITIONS IN ONE-STAGE INJECTION-STRETCH-BLOW-MOULDING - The present invention discloses a method for preparing containers by one-stage injection-stretch-blow-moulding with a resin comprising: | 01-21-2010 |
20100010180 | Transition Metal Complexes Supported on Activating Support - The present invention discloses an active supported catalyst system comprising:
| 01-14-2010 |
20100008829 | TRANSFER PIPE BETWEEN LOOP REACTORS - The present invention discloses a transfer system between the first and second reactors in a double loop reactor that is equipped to reduce clogging in the transfer lines by providing a regulation mechanism arranged to insure equivalent flushing in each transfer line. | 01-14-2010 |
20100004411 | POLYMERISATION OF ETHYLENE AND ALPHA-OLEFINS WITH IMINO-QUINOLINOL COMPLEXES - The present invention discloses active oligomerisation or polymerisation catalyst systems based on imino-quinolinol complexes. | 01-07-2010 |
20090318638 | Slurry Polymerisation Process of Ethylene in the Presence of Low Amount of Scavenger - The invention discloses a metallocene catalysed slurry polymerisation process s of ethylene in the presence of a low concentration of scavenger. This allows improving the anti-sheeting of the reactor during the polymerisation process. | 12-24-2009 |
20090318637 | METHOD AND SYSTEM FOR DETERMINING CATALYST ACTIVITY - The present invention relates to a method for determining activity of a catalyst in a polymerisation process, said polymerisation process comprising the steps of feeding a catalyst and a diluent into a storage vessel, to form a concentrated settled catalyst, feeding said concentrated settled catalyst into a mixing vessel equipped with mixing means and feeding hydrocarbon diluent into said mixing vessel, to form a diluted catalyst slurry, feeding said diluted catalyst slurry into a polymerisation reactor via a volumetric pump, and feeding at least one monomer into said polymerisation reactor to form a polymer. The method is characterised in that density of the diluted catalyst slurry is measured between an outlet of the mixing vessel and the volumetric pump, the amount of catalyst fed into the polymerisation reactor is determined based on the measured density of the diluted catalyst slurry, and the amount of catalyst fed into the polymerisation reactor is compared to the amount of the polymer formed to determine the activity of the catalyst. The invention also relates to a system suitable for carrying out the method. | 12-24-2009 |
20090317576 | LOW MELT FLOW INDEX RESINS FOR INJECTIONS-STRETCH-BLOW-MOULDING - The present invention discloses a method for preparing vials, preferably medical vials by two-stage injection-stretch-blow-moulding with a random copolymer of propylene having a melt index MI2 of from 1 to 3 dg/min and an ethylene content of from 2 to 3.5 wt % based on the weight of the resin, and wherein the preform injection temperature is of at least 280° C. | 12-24-2009 |