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Class Information
Number: 526/129
Name: Synthetic resins or natural rubbers -- part of the class 520 series > Synthetic resins (class 520, subclass 1) > Polymers from only ethylenic monomers or processes of polymerizing, polymerizable compositions containing only ethylenic monomers as reactants or processes of preparing > Polymerizing in the presence of a specified material other than monomer > Material contains transition metal or compound thereof > Material contains silicon atom > Contains non-transition free metal, hydride thereof, or carbon to non-transition metal atom bond > Silicon present in inorganic oxygen-containing compound
Description: Subject matter wherein the silicon-containing material is an inorganic oxygen-containing compound, e.g., H3










Patents under this class:
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Patent Number Title Of Patent Date Issued
8703886 Dual activator-support catalyst systems Apr. 22, 2014
8680001 Preparation of supported catalyst systems containing reduced amounts of aluminoxanes Mar. 25, 2014
8637618 Method for producing very-high or ultra-high molecular weight polyethylene Jan. 28, 2014
8633286 Catalyst compositions comprising support materials having an improved particle-size distribution Jan. 21, 2014
8623973 Activator supports impregnated with group VIII transition metals for polymer property control Jan. 7, 2014
8563671 Supported metallocene catalysts Oct. 22, 2013
8546496 Process for preparing a bimodal polyethylene product in a single loop reactor Oct. 1, 2013
8524627 Activating supports with controlled distribution of OH groups Sep. 3, 2013
8524626 Nano-linked metallocene catalyst compositions and their polymer products Sep. 3, 2013
8519069 Catalytic complex for olefin metathesis reactions, process for the preparation thereof and use thereof Aug. 27, 2013
8507621 Polymerization process for producing bimodal polymers Aug. 13, 2013
8501654 Use of hydrogen scavenging catalysts to control polymer molecular weight and hydrogen levels in a polymerization reactor Aug. 6, 2013
8497330 Methods for polymerization using spray dried and slurried catalyst Jul. 30, 2013
8487053 Methods for removing polymer skins from reactor walls Jul. 16, 2013
8450437 Polymerization catalysts for producing polymers with low melt elasticity May. 28, 2013
8450435 Increased run length in gas phase reactors May. 28, 2013
8450436 Dual metallocene catalyst systems for decreasing melt index and increasing polymer production rates May. 28, 2013
8445607 Process for the preparation of a particulate bimodal polyethylene product May. 21, 2013
8435911 Hybrid catalyst composition for polymerization of olefins May. 7, 2013
8436112 Polyolefin production with a high performance support for a metallocene catalyst system May. 7, 2013
8431659 Prepolymerized catalyst for olefin polymerization, method of producing this prepolymerized catalyst and method of producing olefin polymer Apr. 30, 2013
8426538 Catalyst compositions and polyolefins for extrusion coating applications Apr. 23, 2013
8426536 Nano-linked heteronuclear metallocene catalyst compositions and their polymer products Apr. 23, 2013
8426539 Transition metal complexes supported on activating support Apr. 23, 2013
8399375 Supported metallocene catalyst composition and a process for the preparation of polyolefin using the same Mar. 19, 2013
8362163 Tethered supported transition metal complex Jan. 29, 2013
8338324 Activating supports based on phosphonium complexes Dec. 25, 2012
8324126 Process of preparation of catalytic support and supported metallocene catalysts for production of homopolymers and copolymers of ethylene with alfa-olefins, of high and ultra high molecular we Dec. 4, 2012
8318873 Polymerization process for producing bimodal polymers Nov. 27, 2012
8314199 Homo- or co-polymers of ethylene with combination of processability and toughness properties Nov. 20, 2012
8304361 Reduced reactor fouling Nov. 6, 2012
8298977 Metallocene catalyst components supported on activating supports Oct. 30, 2012
8299188 Supported metallocene catalysts Oct. 30, 2012
8298978 Reactor continuity Oct. 30, 2012
8288487 Catalysts for producing broad molecular weight distribution polyolefins in the absence of added hydrogen Oct. 16, 2012
8273677 Production process of pre-polymerized polymerization catalyst component and addition polymer Sep. 25, 2012
8268944 Dual metallocene catalysts for polymerization of bimodal polymers Sep. 18, 2012
8258247 Catalyst component for polymerization of ethylene and process for producing ethylene polymer (2) Sep. 4, 2012
8242221 Half-metallocene catalyst compositions and their polymer products Aug. 14, 2012
8242220 Copolymers and films thereof Aug. 14, 2012
8207280 Use of hydrogen scavenging catalysts to control polymer molecular weight and hydrogen levels in a polymerization reactor Jun. 26, 2012
8163854 Preparation of supported silyl-capped silica-bound anion activators and associated catalysts Apr. 24, 2012
8143430 Nano-linked heteronuclear metallocene catalyst compositions and their polymer products Mar. 27, 2012
8138113 Dual metallocene catalysts for polymerization of bimodal polymers Mar. 20, 2012
8114946 Process for producing broader molecular weight distribution polymers with a reverse comonomer distribution and low levels of long chain branches Feb. 14, 2012
8110640 Half-metallocene catalyst compositions and their polymer products Feb. 7, 2012
8101537 Prepolymerized catalyst for olefin polymerization, method of producing this prepolymerized catalyst and method of producing olefin polymer Jan. 24, 2012
8084559 Transition metal complex, process for producing said transition metal complex, substituent-carrying fluorene compound, process for producing said fluorene compound, catalyst component for olef Dec. 27, 2011
8076259 Process for the preparation of catalyst paste and products thereof Dec. 13, 2011
8039564 Catalyst precursor particles, their preparation and use Oct. 18, 2011

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