| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 526351000 | From propylene only | 45 |
| 20080214767 | Isotactic Polypropylene Produced From Supercritical Polymerization Process - This invention relates to an isotactic propylene homopolymer having:
| 09-04-2008 |
| 20080249274 | POLYMERIZATION CATALYST SYSTEM UTILIZING EXTERNAL DONOR SYSTEMS AND PROCESSES OF FORMING POLYMERS THEREWITH - External donor systems, catalyst systems and olefin polymerization processes are described herein. The external donor systems generally include a first external donor represented by the general formula SiR | 10-09-2008 |
| 20090118451 | Polypropylene Random Copolymers Having High Melt Flow Rates for Injection Molding and Melt Blown Applications - Polypropylene resin comprising a propylene copolymer said polypropylene resins is endowed with the following features:
| 05-07-2009 |
| 20090131619 | METHODS OF USING HETEROCYCLE-AMINE LIGANDS, COMPOSITIONS, COMPLEXES, AND CATALYSTS - Ligands, compositions, and metal-ligand complexes that incorporate heterocycle-amine compounds are disclosed that are useful in the catalysis of transformations suchas the polymerization of monomers into polymers. The catalyst have high performance characteristics, including higher comonomer incorporation into ethylene/olefin copolymers, where such olefins are for example, 1-octene, propylene or styrene. The catalysts also polymerize propylene to form isotactic polypropylene. | 05-21-2009 |
| 20090163688 | FLUORENYL CATALYST COMPOSITIONS AND OLEFIN POLYMERIZATION PROCESS - An olefin polymerization process comprising contacting one or more olefins and a catalyst component in a reaction zone under suitable reaction conditions to form a polyolefin, wherein the catalyst component is characterized by the formula: | 06-25-2009 |
| 20090215975 | RESIN ARTICLE AND PROCESS FOR PRODUCING THE SAME - Provided is a resin article containing a propylene resin having a crystalline phase and a non-crystalline phase, wherein the propylene resin shows, in its scattering profile measured at a temperature of 155° C. to 165° C. by small-angle X-ray scattering method, a plurality of scattering peaks. This resin article can be produced by a method including a step of shaping a propylene resin containing a polypropylene having an intrinsic viscosity of 6.0 dl/g or more in an amount of 5% by weight to 40% by weight to produce an article precursor, and a step of heating the article precursor at 150° C. to 170° C. | 08-27-2009 |
| 20090259009 | Propylene Polymers - A polypropylene resin comprising a propylene polymer endowed with the following characteristics: a) distribution of molecular weight Mw/Mn lower than 4; b) the melt-viscosity measured at a temperature of 250° C. in the shear rate range between 1000 1/s and 40000 1/s meet the following relationship: c) h 9*e(−0.00006*sr)+2 a. wherein h represents the melt-viscosity in Pas and sr the shear rate in 1/s d) the isotactic pentads (mmmm) measured with by | 10-15-2009 |
| 20100004419 | HIGH SHEAR ROTARY FIXED BED REACTOR - A reactor comprising at least one contact surface made from, coated with, or impregnated by a catalyst, wherein the contact surface comprises a sintered metal or a ceramic, and wherein the reactor is configured to subject a reactant stream to shear. A system for carrying out a heterogeneously catalyzed reaction, the system comprising a reactor as described above and a pump configured for delivering reactants to the at least one reactor. A method for carrying out a heterogeneously-catalyzed reaction by introducing reactants into a reactor comprising at least one contact surface made from, coated with, or impregnated by a catalyst under conditions which promote production of a desired product, wherein the contact surface comprises a sintered metal or a ceramic, and forming a dispersion of reactants within the reactor, wherein the dispersion comprises droplets or gas bubbles of reactant with an average diameter of less than about 5 μm. | 01-07-2010 |
| 20100063235 | POLYMER CRYSTALLINE MATERIALS - One embodiment of the present invention provides polymer crystalline materials containing crystals of the polymer and satisfying the following requirements (I) and (II) or the following requirements (I) and (III): (I) the polymer crystalline materials a crystallinity of 70% or greater; (II) the crystals are 300 nm or less in size; and (III) the crystals have a number density of 40 μm | 03-11-2010 |
| 20100168364 | MULTI-BRANCHED POLYPROPYLENE - Multi-branched polypropylene having a g′ of less than 1.00 | 07-01-2010 |
| 20100179296 | Metalloaluminophosphate Molecular Sieves with Lamellar Crystal Morphology and Their Preparation - The present invention relates to metalloaluminophosphate (MeAPO) molecular sieve with lamellar crystal morphology having an empirical chemical composition on an anhydrous basis, after synthesis and calcination, expressed by the formula H | 07-15-2010 |
| 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 |
| 20100234550 | HIGH SHEAR OXIDATION OF WAX - In this disclosure, a system is described, comprising a shear device with at least one inlet and at least one outlet and a mixing vessel with at least one inlet and at least one outlet, wherein an inlet of the shear device is in fluid communication with an outlet of the mixing vessel. In certain embodiments, the shear device and the mixing vessel form a loop for fluid communication. Also disclosed herein is a method of high shear oxidation, comprising mixing an oxidant with a substrate to form a substrate-oxidant mixture and applying shear to the substrate-oxidant mixture to form a product. The product includes ethylene oxide, propylene oxide, terephthalic acid, phenol, acrylonitrile, maleic anhydride, phthalic anhydride, nitric acid, caprolactam, oxidized polyethylene, oxidized polypropylene, oxidized polyethylene copolymers, and oxidized polypropylene copolymers. Suitable oxidant includes air, oxygen, ozone, peroxide, organic peroxide, halogen, oxygen-containing gas, and halogen-containing gas. | 09-16-2010 |
| 20100240854 | PRE-EXPANDED POLYPROPYLENE RESIN PARTICLE, AND METHOD FOR PRODUCTION THEREOF - A pre-expanded polypropylene resin particle can be produced in the following manner: a polypropylene resin particle produced by an under water cut method, water, a dispersing agent, and a foaming agent are charged in a pressure-resistant container, the resulting mixture is heated to a temperature equal to or higher than the softening temperature of the polypropylene resin particle to allow the polypropylene resin particle to be impregnated with the foaming agent under pressure, and the resulting product is released into the atmosphere having a pressure lower than the pressure of the inside of the pressure-resistant container. As the polypropylene resin composition, a composition is used which comprises 100 parts by weight of a polypropylene resin and 1 to 20 parts by weight of a polyethylene resin having a melt viscosity of 10 to 2000 mPa·s at 140° C., whereby it becomes possible to reduce the pressure of a heated molding vapor required for producing an in-mold expanded molding product having a fusion rate of 75% or higher. | 09-23-2010 |
| 20100249354 | INJECTION STRETCH BLOW MOLDED ARTICLES AND SYNDIOTACTIC POLYMERS FOR USE THEREIN - Injection stretch blow molded (ISBM) articles and methods of forming the same are described herein. The ISBM articles generally include a syndiotactic propylene-based polymer. | 09-30-2010 |
| 20100261864 | SEPARATION METHOD - A crushed piece made of a predetermined material is accurately recovered from crushed pieces. A separation method is provided which extracts a target | 10-14-2010 |
| 20110040061 | SHORT-CHAIN BRANCHED POLYPROPYLENE - A short-chain-branched polypropylene having xylene solubles of at least 0.5 percent by weight is provided. In certain embodiments the polypropylene has a strain hardening index of at least 0.15 as measured by a deformation rate of 1.00 s | 02-17-2011 |
| 20110137003 | Classified Catalyst Composition, Apparatus, and Method - The present disclosure is directed to an apparatus and process for producing a catalyst composition and a low-fines catalyst composition in particular. A crossflow classification device is used to separate large catalyst particles from catalyst fines, A slurry of a catalyst composition is introduced into the crossflow classification device. A classified catalyst composition is retrieved from a retentate produced as a result of subjecting the catalyst slurry to a crossflow classification process. The solids content of the pre-classified and/or post-classified catalyst slurry is determined by way of NMR spectroscopy. The solids content determination accounts for migration of wash liquid from the catalyst composition and into the slurry liquid phase, The classified catalyst composition has a low-fines content and produces a polyolefin composition with a low polymer fines content. | 06-09-2011 |
| 20110152490 | Catalyst Composition with Mixed Selectivity Control Agent and Method - The present disclosure provides a Ziegler-Natta catalyst composition comprising a procatalyst, a cocatalyst and a mixed external electron donor comprising a first selectivity control agent, a second selectivity control agent and an activity limiting agent. A polymerization process incorporating the present catalyst composition produces a high-stiffness propylene-based polymer with a melt flow rate greater than about 50 g/10 min. The polymerization process occurs in a single reactor, utilizing standard hydrogen concentration with no visbreaking. | 06-23-2011 |
| 20110251366 | Polypropylene grids manufactured with a beta nucleation additive, the method of manufacture and uses thereof - Integral polymer grids, such as geogrids, are made by stretching and orienting a polypropylene starting sheet material having a defined pattern of holes or depressions in which the polypropylene is at least 50%, and preferably up to about 80%, beta crystals caused by adding a beta nucleating agent to the polypropylene, preferably in concentrations between about 10 ppm to about 100 ppm. Such beta nucleated polypropylene grids exhibit increased yield and break tensile strengths, increased 2% and 5% tensile strengths, increased modulus characteristics, increased torsional stiffness, increased impact strength, and increased grid junction strength. Methods for manufacturing the beta nucleated polypropylene mesh grids are disclosed, along with applications for stabilizing particulate material in civil engineering structures, and the like. | 10-13-2011 |
| 20110251367 | BARRIER FOR GUIDED BONE REGENERATION - Barrier for guided bone regeneration, patent of Utility Model, comprising a film of biaxially oriented polypropylene (BOPP), in sterile packing, for guided bone regeneration, with varied measures and formats. | 10-13-2011 |
| 20120016098 | Steaming of a Polyolefin - A method for treating polymer particles with steam in a steaming vessel downstream a polymerization process, the method comprising contacting polymer particles with a counter-current flow of steam, wherein the flow rate of steam entering said steaming vessel is continuously maintained proportional to the production rate of said polymer in said polymerization process and to the gradient between the temperature (T | 01-19-2012 |
| 20120059139 | PRODUCTION PROCESS OF PROPYLENE - An object of the present invention is to provide a process of producing propylene by contacting ethylene with a catalyst, where propylene is produced with high selectivity. The present invention relates to a production process of propylene, comprising contacting ethylene with a catalyst, wherein the catalyst comprises a zeolite as an active ingredient and an acid content in the outer surface of the zeolite is 5% or less based on an acid content of the entire zeolite. | 03-08-2012 |
| 20120101245 | THERMOCOUPLE HEATING - There is described a method of affecting a thermally induced change to a material which comprises the use of a thermocouple or of a resistance temperature detector as a supply of thermal energy. | 04-26-2012 |
| 20120302716 | METHOD FOR PRODUCING PROPYLENE-BASED POLYMER - A method for producing a propylene-based polymer, including polymerizing propylene or propylene and an α-olefin except propylene in the presence of a catalyst with a horizontal polymerization reactor equipped with stirring vanes rotating around a horizontal axis therein by a continuous vapor-phase polymerization, which removes heat of polymerization by heat of vaporization of a liquefied propylene, wherein the reactor can set a plurality of area sections different in temperature in a horizontal direction inside the reactor, and satisfies at least one of i) a temperature difference, ΔT | 11-29-2012 |
| 20120316312 | Synthesis of Chabazite-Containing Molecular Sieves and Their Use in the Conversion of Oxygenates to Olefins - In a method of synthesizing a silicoaluminophosphate molecular sieve having 90+% CHA framework-type character, a reaction mixture is prepared comprising sources of water, silicon, aluminum, and phosphorus, as well as an organic template. In one aspect, the reaction mixture is heated at more than 10° C./hour to a crystallization temperature and is retained at the crystallization temperature or within the crystallization temperature range for a crystallization time from 16 hours to 350 hours to produce the silicoaluminophosphate molecular sieve. In another aspect, the reaction mixture is heated at less than 10° C./hour to a crystallization temperature from about 150° C. to about 225° C. and is then retained there for less than 10 hours to produce the silicoaluminophosphate molecular sieve. The molecular sieve can then be recovered from the reaction mixture and, preferably, used in a hydrocarbon conversion process, such as oxygenates to olefins. | 12-13-2012 |
| 20130012676 | METHOD FOR PRODUCING DEVOLATILIZED POLYOLEFIN AND MOLDED ARTICLE OF POLYOLEFIN - Disclosed is a method for producing a devolatilized polyolefin, wherein the method comprises a step that involves providing a twin screw extruder comprising a resin feeding port, a first molten resin kneading zone, a molten resin partially filled zone which is prevented from being fully filled with molten resin, a second molten resin kneading zone, and a devolatilization zone that are disposed in order from the upstream of a cylinder of the extruder, feeding a polyolefin through the resin feeding port, and feeding water to the molten resin partially filled zone in an amount of 0.01 to 50 parts by weight relative to 100 parts by weight of the polyolefin. | 01-10-2013 |
| 20130041124 | POLYMER ARTICLE AND METHOD FOR PRODUCING POLYMER ARTICLE - Provided are a polymer article excellent in mechanical strength, toughness, and stretchability and a production method of the polymer article. The polymer article of the present invention is formed of a polymer material and is a polymer blank or a formed polymer body. The polymer article of the present invention has a crystallinity of not less than 50% but less than 90% and a tensile strain at fracture of not less than 60%. A method for producing a polymer article of the present invention includes: a heating step of heating the polymer material to a temperature of not lower than (Tm−70)° C. but lower than Tm(° C.) where Tm is the melting point (° C.) of the polymer material; and a compression step of cooling the polymer material heated in the heating step and compressing the polymer material in the course of the cooling to obtain a polymer article having a crystallinity of not less than 50% but less than 90% and a tensile strain at fracture of not less than 60%. | 02-14-2013 |
| 20130066032 | PROCESS FOR PREPARING ETHYLENE AND/OR PROPYLENE - The present invention provides a process for preparing ethylene and/or propylene, comprising providing a hydrocarbon stream, comprising C4+ normal and C4+ iso-olefins; subjecting the hydrocarbon stream to an etherification process wherein the iso-olefins are converted with alcohol to an tert-alkyl ether, and retrieving a first etherification product stream; separating the first etherification product stream into a first ether-enriched stream and an iso-olefin-depleted hydrocarbon stream; converting the normal olefins in the iso-olefin-depleted hydrocarbon stream to ethylene and/or propylene with a molecular sieve-comprising catalyst and retrieving an olefinic product; decomposing the tert-alkyl ether in the ether-enriched stream into alcohol and an iso-olefin; isomerising the obtained iso-olefins to normal-olefins and retrieving an normal-olefin-enriched hydrocarbon stream; and converting the normal olefins in the normal-olefin-enriched hydrocarbon stream to ethylene and/or propylene by contacting the normal-olefin-enriched hydrocarbon stream with a molecular sieve-comprising catalyst and retrieving an olefinic product. | 03-14-2013 |
| 20130072653 | INTERLOCK AND PROCESS - The present invention relates to the degassing of polymer powder, and in particular provides an interlock for use in a process for degassing of a polymer powder in a degassing vessel, which interlock comprises: a. measuring the temperature of the vapour phase resulting from a liquid-vapour separation, which vapour phase is used as a purge gas in a degassing vessel, b. comparing said measured temperature to a threshold value, and b. in the event that the measured temperature is above the threshold value then the use of the vapour as purge gas is stopped or reduced. | 03-21-2013 |
| 20130137843 | POLYPROPYLENE GRIDS MANUFACTURED WITH A BETA NUCLEATION ADDITIVE, THE METHOD OF MANUFACTURE AND USES THEREOF - Integral polymer grids, such as geogrids, are made by stretching and orienting a polypropylene starting sheet material having a defined pattern of holes or depressions in which the polypropylene is at least 50%, and preferably up to about 80%, beta crystals caused by adding a beta nucleating agent to the polypropylene, preferably in concentrations between about 10 ppm to about 100 ppm. Such beta nucleated polypropylene grids exhibit increased yield and break tensile strengths, increased 2% and 5% tensile strengths, increased modulus characteristics, increased torsional stiffness, increased impact strength, and increased grid junction strength. Methods for manufacturing the beta nucleated polypropylene mesh grids are disclosed, along with applications for stabilizing particulate material in civil engineering structures, and the like. | 05-30-2013 |
| 20130158224 | POLYMER MATERIAL AND METHOD FOR PRODUCING SAME - Provided are a method for producing a polymer material having a high degree of crystallization, a small variability in degree of crystallization, and a three-dimensionally isotropic crystallinity to thus give high thermal resistance, high isotropy of resin physical properties, and a small variability in resin physical properties; and the polymer material. The method for producing a polymer material includes the steps of: heating a thermoplastic resin to or above a melting point determined from a melting peak measured by DSC into a thermoplastic resin melt; applying a pressure higher than atmospheric pressure to the thermoplastic resin melt; starting cooling the thermoplastic resin melt with a pressure higher than atmospheric pressure applied thereto; releasing the pressure on the thermoplastic resin melt after cooling the thermoplastic resin melt to a cooling-end-temperature lower than an upper limit of a crystallization temperature range, wherein during the cooling, the pressure on the thermoplastic resin melt is maintained at the pressure higher than atmospheric pressure or raised. The polymer material is one obtained by the above production method. | 06-20-2013 |
| 20130203953 | METHOD FOR THE PRODUCTION OF OLEFINS, AN OLEFIN, A POLYOLEFIN, AND USE OF THE POLYOLEFIN - The present invention relates to a method for the production of an olefin from at least one renewable natural raw material. More specifically, the present invention refers to a method whereby is obtained ethylene or propylene at high yield and high productivity by means of the anodic electrodecarboxylation reaction of carboxylic acids, respectively propionic acid and butyric acid, produced from fermentation, preferably of sugars. The method for generating the olefin is simple, has a low cost, and provides low emissions of greenhouse gasses of fossil origin. | 08-08-2013 |
| 20130261277 | Branched Vinyl Terminated Polymers and Methods for Production Thereof - This invention relates to a process for polymerization, comprising (i) contacting, at a temperature greater than 35° C., one or more monomers comprising ethylene and/or propylene, with a catalyst system comprising a metallocene catalyst compound and an activator, (ii) converting at least 50 mol % of the monomer to polyolefin; and (iii) obtaining a branched polyolefin having greater than 50% allyl chain ends, relative to total unsaturated chain ends. The invention also relates to the branched polyolefins and functionalized branched polyolefins. | 10-03-2013 |
| 20130296520 | MEDIUM VOLTAGE CABLE JACKETING - In the most preferred embodiments, the polypropylene jackets will meet the following specifications: a tensile strength of greater than or equal to 1500 psi (or greater than or equal to 10.3 MPa); and elongation at break of 150% or greater. Additionally, the aged requirements (121° C. for 168 hours) in most preferred embodiments are a retained tensile strength that is 70% of the original, and a retained elongation that is 70% of the original. Additionally, in most 10 preferred embodiments, the heat distortion at 131° C. is less than or equal to 30%. Additionally, in most preferred embodiments then carbon black percentage is 2% or greater. It should be understood, that in other embodiments of the polypropylene jackets, the various specifications and or requirements may fall outside some or all of these ranges. | 11-07-2013 |
| 20140031508 | Enhancing the Physical Properties of Semi-Crystalline Polymers via Solid-State Shear Pulverization - Solid-state shear pulverization of semi-crystalline polymers and copolymers thereof and related methods for enhanced crystallization kinetics and physical/mechanical properties. | 01-30-2014 |
| 20140080991 | FLEXIBLE REACTOR ASSEMBLY FOR POLYMERIZATION OF OLEFINS - The invention relates to a reactor assembly for the production of polymers including a fluidized bed reactor ( | 03-20-2014 |
| 20140303339 | "Method and Apparatus for Converting Hydrocarbons Into Olefins" - An apparatus and method are provided for processing hydrocarbon feeds. The method enhances the conversion of hydrocarbon feeds into conversion products, such as ethylene and propylene. In particular, the present techniques utilize a high-severity reactor integrated with another reactor type to convert hydrocarbons to other petrochemical products. | 10-09-2014 |
| 20140336346 | PURIFICATION OF A HYDROCARBON STREAM - A process for producing a purified hydrocarbon stream can include contacting a hydrocarbon stream contaminated with one or more organoaluminum compounds with a chemical agent that is capable of reacting with the one or more organoaluminum compounds. | 11-13-2014 |
| 20140364577 | Enhancing the Physical Properties of Semi-Crystalline Polymers via Solid-State Shear Pulverization - Solid-state shear pulverization of semi-crystalline polymers and copolymers thereof and related methods for enhanced crystallization kinetics and physical/mechanical properties. | 12-11-2014 |
| 20150018504 | Activating Agents for Hafnium-Based Metallocene Components - The present invention discloses an active metallocene catalyst system prepared with a hafnium-based metallocene catalyst system and an activating agent comprising an aluminoxane and a sterically hindered Lewis base. | 01-15-2015 |
| 20150119543 | POLYPROPYLENE MOLDED ARTICLE AND METHOD FOR MANUFACTURING THE SAME - A polypropylene molded article has a crystallinity degree of 48% or more by wide-angle X-ray diffraction measurement. The half width of an orientation peak in an azimuth angular distribution obtained by wide-angle X-ray diffraction measurement on the polypropylene molded article is 5.5° or less, and the long period of the polypropylene molded article obtained by small-angle X-ray scattering measurement is 12 nm or more and 16 nm or less. | 04-30-2015 |
| 20150291712 | PROCESS FOR PREPARING AN OLEFIN POLYMERISATION CATALYST COMPONENT WITH IMPROVED HIGH TEMPERATURE ACTIVITY - The invention refers to a process for increasing the polymerization activity of a titanium containing catalyst, in particular an olefin polymerization catalyst component in particulate form having an improved high temperature activity and the use thereof in a process for polymerizing olefins. | 10-15-2015 |
| 20150315303 | SEMI-CRYSTALLINE THERMOPLASTIC POLYMERS AND ARTICLES MANUFACTURED THEREFROM - Disclosed herein is a method comprising masticating a molten polymer; where the polymer is semicrystalline polymer prior to melting; where the masticating polymer is conducted at an elevated temperature of Tm−15K to Tm+90K; where Tm is the crystalline melting point of the polymer; masticating the molten polymer while it is cooled from the elevated temperature to a temperature of Ta; where Ta is a temperature that is greater than Tc−10K, where Tc is the crystallization temperature of the polymer; and masticating the polymer at the temperature of Ta for a time period of 0.1 to 50 minutes. | 11-05-2015 |
| 20220135714 | NUCLEATED PROPYLENE POLYMER COMPOSITION WITH HIGH TOUGHNESS - The present invention is directed to a propylene polymer composition comprising (a) at least 90 wt. %, based on the weight of the total propylene homopolymer composition, of a propylene homopolymer having (i) a pentad isotacticity (mmmm) of equal or more than 98.0 mol.-%, determined by quantitative | 05-05-2022 |
