| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 525052000 | Utilizing a tubular or loop reactor | 27 |
| 20080200611 | Blends of Ethylene Acrylate Copolymers With Ethylene Based Wax For Asphalt Modification - Polymer-modified asphalt compositions comprising an elastomeric ethylene copolymer and a low molecular weight plastomer and asphalt demonstrate excellent elasticity and stiffness. | 08-21-2008 |
| 20080255302 | Low Density Ethylenic Polymer Composition and Method of Making the Same - The instant invention is an improved low-density ethylenic polymer composition and method of making the same. The polymer composition according to instant invention includes a major component, and a minor component. The major component is an LDPE resin having a melt index (I | 10-16-2008 |
| 20080312375 | Polymerization Process - This invention is directed to processes of making polymer in the presence of a fluorinated hydrocarbon and recovering the polymer. The processes provided enable polymerization processes to be practiced with minimal fouling in the reaction system, and allows for the recovery of the fluorinated hydrocarbon and other hydrocarbons such as hydrocarbons for re-use in the process or hydrocarbon by-products from the polymerization process. The invention is particularly beneficial in the production of propylene polymers and copolymes using bulky ligand metallocene-type catalyst systems. | 12-18-2008 |
| 20090018267 | Polypropylene Composition Comprising a Propylene Homopolymer Component - The present invention concerns a polypropylene composition comprising a nucleated propylene homopolymer having improved optical properties. | 01-15-2009 |
| 20090062463 | Polymer composition for injection moulding - The application relates to a polyethylene composition having a base resin, the base resin comprising (A) a first polyethylene fraction, and (B) a second polyethylene fraction, wherein the melt flow rate MFR | 03-05-2009 |
| 20090062464 | METHOD, APPARATUS AND SYSTEM FOR PREPARING ADHESIVE-PROMOTER-TREATED HOT MELT ADHESIVES IN CONTINUOUS MODE - Methods, apparatuses, and systems for manufacturing a hot melt adhesive containing an adhesion promoter in a continuous mode include supplying a melted, hot melt adhesive to a mixing device at a first predetermined rate while simultaneously supplying an adhesion promoter to the same mixing device at a second predetermined rate to form a homogeneous admixture containing the hot melt adhesive and adhesion promoter. The hot melt adhesive/adhesion promoter mixture is subsequently reacted in at least one tubular reactor at a predetermined temperature for a predetermined residence time to allow the adhesion promoter to chemically bond with the hot melt adhesive and form an adhesive-promoter-treated hot melt adhesive. The adhesion-promoter-treated hot melt adhesive is collected in a product receiver and may be further processed. | 03-05-2009 |
| 20090131586 | HIGH MELT FLOW POLYMER OF IMPROVED DURABILITY FOR PIPE APPLICATIONS - The present invention relates to a polymer composition, comprising (i) a polypropylene homopolymer, (ii) a polypropylene random copolymer, prepared by copolymerization of propylene with an olefin comonomer and having an amount of olefin comonomer units of 0.2 to 5 wt %, and (iii) an elastomeric copolymer of propylene and at least one olefin comonomer, the polymer composition having a tensile modulus, determined according to ISO 527-2/1 B at 1 mm/min. and 230 C, of at least 1200 MPa. | 05-21-2009 |
| 20090186983 | METHOD OF MAKING A SYNTHETIC ALKYLARYL COMPOUND - A process for alkylating an aromatic compound comprising reacting (a) a first amount of at least one aromatic compound with a first amount of a mixture of olefins having from about 8 to about 100 carbon atoms, in the presence of a strong acid catalyst; and reacting the product of (a) with an additional amount of at least one aromatic compound and an additional amount of a strong acid catalyst, and optionally, with an additional amount of a mixture of olefins selected from olefins having from about 8 to about 100 carbon atoms, wherein the resulting product comprises at least about 80 weight percent of a 1,2,4 tri-alkylsubstituted aromatic compound. | 07-23-2009 |
| 20090209702 | Slurry phase polymerisation process - A process comprising polymerising in a loop reactor of continuous tubular construction an olefin monomer optionally together with an olefin comonomer in the presence of a polymerisation catalyst in a diluent to produce a slurry comprising solid particulate olefin polymer and the diluent wherein the internal diameter of at least 50% of the total length of the reactor is at least 700 millimeters and the solids concentration in the reactor is at least 20 volume % is disclosed. | 08-20-2009 |
| 20090253863 | POLYETHYLENE COMPOSITION FOR INJECTION MOLDED CAPS AND CLOSURE ARTICLES - The present invention relates to a multimodal polyethylene composition wherein (i) the composition has an MFR | 10-08-2009 |
| 20100093931 | PROCESS FOR THE CONTINUOUS HYDROGENATION OF CARBON-CARBON DOUBLE BONDS IN AN UNSATURATED POLYMER TO PRODUCE A HYDROGENATED POLYMER - Proposed is a process for the continuous hydrogenation of carbon-carbon double bonds in an unsaturated polymer to produce a hydrogenated polymer, said unsaturated polymer being based on a conjugated diolefin and at least one other copolymerizable monomer, in the presence of a homogeneous or heterogeneous catalyst, wherein said unsaturated polymer, hydrogen and said homogeneous or heterogeneous catalyst is passed through a multistage agitated reactor, comprising a cylindrical, elongated shell having closed ends and separated by baffles into a multiplicity of discrete chambers with access from one chamber to another through concentric circular openings, axially centered with said baffles and a continuous rotatable shaft extending concentric with said baffles within said shell with at least one impeller attached thereto positioned in each chamber, said continuous rotatable shaft and said circular openings providing annular openings and said hydrogenated polymer being withdrawn at the opposite end of the multistage agitated reactor at which the feed is introduced. | 04-15-2010 |
| 20100093932 | PROCESS FOR THE CONTINUOUS HYDROGENATION OF CARBON-CARBON DOUBLE BONDS IN AN UNSATURATED POLYMER - Proposed is a process for the continuous hydrogenation of carbon-carbon double bonds in an unsaturated polymer based on a conjugated diolefin and at least one other copolymerizable monomer to produce a hydrogenated polymer, in the presence of a solvent and a homogeneous or heterogeneous catalyst, wherein said unsaturated polymer, said homogeneous or heterogeneous catalyst and hydrogen are passed through a reactor equipped with static internal elements. | 04-15-2010 |
| 20100113692 | Apparatus for Continuous Production of Partially Polymerized Compositions - In one embodiment, an apparatus for continuous production of a partially polymerized composition comprises: a reactor for formation of monomer to be partially polymerized; and a polymerization reactor for continuously receiving the monomer to be partially polymerized from the reactor in which it is formed and partially polymerizing the monomer. In another embodiment, an apparatus for continuous production of a partially polymerized composition comprises: a polymerization reactor for continuously receiving monomer to be partially polymerized and for partially polymerizing the monomer therein, wherein the polymerization reactor comprises an essentially straight tube for a heating portion and wherein the heating portion is essentially free of internal mixing apparatus. | 05-06-2010 |
| 20100144968 | Slurry phase polymerisation process - A process for controlling a slurry phase (co-) polymerisation process in the presence of a polymerisation catalyst, which comprises maintaining the density SPAN of the polymer powder particles (defined as the absolute value of the density difference in g/cm | 06-10-2010 |
| 20100317798 | BIMODAL POLYETHYLENE COMPOSITION AND ARTICLES MADE THEREROM - The invention relates to a polyethylene composition with a bimodal molecular weight distribution and articles made therefrom, such as high topload blow moldings and transmission and distribution pipes. The composition comprises a low-molecular-weight (LMW) ethylene homopolymer component and a homogeneous, high-molecular-weight (HMW) ethylene interpolymer component, wherein the LMW component is characterized as having a molecular weight distribution, MWD | 12-16-2010 |
| 20110077353 | REACTOR SYSTEM WITH OPTIMIZED HEATING AND PHASE SEPARATION - A reactor system operable to facilitate a chemical reaction in a reaction medium flowing therethrough. The reactor system includes a heat exchanger for heating the reaction medium and a disengagement vessel for disengaging vapor from the heated reaction medium. | 03-31-2011 |
| 20110196093 | METHOD OF FORMING A POLYAMIDE - A method polymerizes a monomer to form a polyamide having a reagent incorporated therein. In the method, a masterbatch is formed that includes the reagent. The masterbatch and the monomer are introduced into a reactor, and the monomer is polymerized in the presence of the reagent to form the polyamide having the reagent incorporated therein. The monomer may be a caprolactam monomer that may be polymerized in a VK tube reactor to form polyamide 6 having at least one free acid site. The reagent may be present in an amount of from 1 to 10 parts by weight per 100 parts by weight of the masterbatch. Additionally, the masterbatch and caprolactam may be introduced into the top of the VK tube reactor. | 08-11-2011 |
| 20110207882 | PROCESS FOR HYDROLYZING POLYMERS CONTAINING VINYLCARBOXAMIDE UNITS - A process for the hydrolysis of polymers comprising vinylcarboxamide units by heating polymers comprising vinylcarboxamide units in an aqueous medium in the presence of acids or bases, wherein an aqueous solution or dispersion of a polymer comprising vinylcarboxamide units and an aqueous solution or a base or acid are fed continuously to a tubular reactor at elevated pressure, from 0.05 to less than one equivalent of a base or acid being used per vinylcarboxamide equivalent and the mixture being passed through the tubular reactor at a temperature of >100° C. to 250° C., depressurized and cooled. | 08-25-2011 |
| 20130289206 | Polymers Comprising Hydroxyl Groups And Ester Groups And Method For The Production Thereof - The invention relates to polymers comprising ester/hydroxyl groups, containing repetitive structural units of formulae (I) and (II) in blocks, alternating, or random sequence wherein D represents a direct bond between the polymer backbone and the hydroxyl group, a C | 10-31-2013 |
| 20130345360 | PROCESS FOR PREPARING POLYETHYLENE BLEND COMPRISING METALLOCENE PRODUCED RESINS AND CHROMIUM PRODUCED RESINS - A process for preparing a homogeneous polyethylene product can include producing a first polyethylene resin in the presence of a metallocene catalyst in a reactor. The first polyethylene resin can have a density of from 0.942 to 0.970 g/cm | 12-26-2013 |
| 20140045994 | THERMOPLASTIC POLYOLEFINS WITH HIGH FLOWABILITY AND EXCELLENT SURFACE QUALITY PRODUCED BY A MULTISTAGE PROCESS - Reactor grade thermoplastic polyolefins with high flowability and excellent surface quality comprising (A) 40-90 wt % of a propylene homo- or copolymer matrix with an MFR in accordance with ISO 1 133 (230° C., 2.16 kg load) of ≧200 g/10 min and (B) 2-30 wt % of an elastomeric ethylene-propylene copolymer having an intrinsic viscosity IV (according to ISO 1628 with decalin as solvent) of ≦2.8 dl/g and an ethylene content of >50 to 80 wt % and (C) 8-30 wt % of an elastomeric ethylene-propylene copolymer having an intrinsic viscosity IV (according to ISO 1628 with decalin as solvent) of 3.0-6.5 dl/g and an propylene content of 50 to 80 wt %, the reactor grade thermoplastic polyolefins being obtainable by a multistage polymerization process with at least 3 polymerization steps in the presence of a catalyst system comprising (i) a Ziegler-Natta procatalyst which contains a trans-esterification product of a lower alcohol and a phthalic ester and (ii) an organometallic cocatalyst and (iii) external donor represented by formula (I) Si(OCH | 02-13-2014 |
| 20140058039 | PROCESS FOR PREPARING POLYETHYLENE BLEND COMPRISING METALLOCENE PRODUCED RESINS AND ZIEGLER-NATTA PRODUCED RESINS - A process for preparing a homogeneous polyethylene product can include producing a first polyethylene resin in the presence of a metallocene catalyst in a reactor. The first polyethylene resin can have a density of from 0.940 to 0.970 g/cm | 02-27-2014 |
| 20140350182 | RAFT POLYMERS - The invention provides for a process for removing thiocarbonylthio groups from polymer prepared by RAFT polymerisation, the process comprising: | 11-27-2014 |
| 20150025195 | BIMODAL HIGH-DENSITY POLYETHYLENE RESINS AND COMPOSITIONS WITH IMPROVED PROPERTIES AND METHODS OF MAKING AND USING THE SAME - The present disclosure is related to bimodal high-density polyethylene polymer compositions with increased high melt strength and good processability comprising a base resin which has a density of about 945 kg/m | 01-22-2015 |
| 20160090447 | Continuous Process For The Preparation Of Polyoxazolines - A continuous process for the preparation of polyoxazolines comprises mixing monomers, an initiator, and optionally an additive, feeding the mixture into at least one tubular reactor segment with a feed side and an outlet side, and polymerizing the mixture to form the polyoxazolines. A tubular reactor segment comprises a mixer for forming a mixture comprising monomers, an initiator, an additive, a terminating agent, and/or a functionalizing agent, at least first and second tubular reactor segments, and addition devices for the first and second tubular reactor segments. | 03-31-2016 |
| 20160176991 | CONTINUOUS SYNTHESIS METHOD FOR A MODIFIED DIENE ELASTOMER, FACILITY FOR IMPLENTING SAME | 06-23-2016 |
| 20160376393 | PROPYLENE COPOLYMER FOR BOPP HEAT SEAL FILM LAYERS - A propylene-comonomer block copolymer may have a molecular weight distribution Mw/Mn of at least 1.7, a percentage of enthalpy measured between Ti and [Tm−18° C.] of at least 20% of the total enthalpy, and a ratio E1/Co of at least 0.80. The propylene-comonomer block copolymer may be produced by polymerizing propylene in the presence of at least one comonomer and a bridged metallocene catalyst. The bridged metallocene catalyst may include bridged fluorenyl, bridged indenyl metallocene, or any combination thereof. The propylene-comonomer block copolymer may be used as a heat seal layer for biaxially oriented multi-layer films. | 12-29-2016 |
