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Class Information
Number: 526/134
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 boron atom > Boron compound contains boron bonded to hydrogen or to carbon atom
Description: Subject matter wherein the boron compound contains a boron to hydrogen bond, or a boron to carbon bond (e.g., Ti(BH4










Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12 13

Patent Number Title Of Patent Date Issued
8703887 Process for the production of an ethylene polymer using a chromium containing catalyst Apr. 22, 2014
8703886 Dual activator-support catalyst systems Apr. 22, 2014
8658556 Catalyst systems comprising multiple non-coordinating anion activators and methods for polymerization therewith Feb. 25, 2014
8623974 Branched vinyl terminated polymers and methods for production thereof Jan. 7, 2014
8623976 Polymerization catalyst compositions containing metallocene complexes and polymers produced by using the same Jan. 7, 2014
8618229 Catalyst compositions containing transition metal complexes with thiolate ligands Dec. 31, 2013
8580902 Catalyst system, process for olefin polymerization, and polymer compositions produced therefrom Nov. 12, 2013
8536081 Supported polymerisation catalysts Sep. 17, 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
8497331 Polymerisation of ethylene and alpha-olefins with pyrrol-iminophenol complexes Jul. 30, 2013
8455597 Catalysts and methods of use thereof to produce vinyl terminated polymers Jun. 4, 2013
8450436 Dual metallocene catalyst systems for decreasing melt index and increasing polymer production rates May. 28, 2013
8436113 Ethylene alpha olefin polymer formed by use of metallocene catalyst May. 7, 2013
8431660 Non-metallocene catalysts having tetrazol group for olefin polymerization and polymerizing method of olefin using the same Apr. 30, 2013
8431662 Polymacromonomer and process for production thereof Apr. 30, 2013
8426529 Ethylene/dicyclopentadiene copolymers and functionalized derivatives thereof Apr. 23, 2013
8420755 Compounds, catalyst composition comprising the same, and method for preparing of cycloolefin-based polymer using the same Apr. 16, 2013
8394737 Preparation of activating supports Mar. 12, 2013
8354484 High temperature solution polymerization process Jan. 15, 2013
8344081 Transition metal complexes, catalysts composition containing the same, and process for preparing ethylene homopolymers or copolymers of ethylene and alpha-olefins using the same Jan. 1, 2013
8338324 Activating supports based on phosphonium complexes Dec. 25, 2012
8329834 Dual metallocene catalyst systems for decreasing melt index and increasing polymer production rates Dec. 11, 2012
8318998 Enhanced catalyst performance for production of vinyl terminated propylene and ethylene/propylene macromers Nov. 27, 2012
8318875 Super-solution homogeneous propylene polymerization and polypropylenes made therefrom Nov. 27, 2012
8268949 Borohydride metallocene complex of a lanthanide, catalytic system including the said complex, polymerisation method using same and ethylene/butadiene copolymer obtained using said method Sep. 18, 2012
8263722 Process for making ethylene interpolymers and interpolymers made thereby; compositions and electrical devices containing such interpolymers Sep. 11, 2012
8242220 Copolymers and films thereof Aug. 14, 2012
8236909 Method for preparing polymer by precipitation polymerization Aug. 7, 2012
8222358 Process for producing propylene copolymers Jul. 17, 2012
8207280 Use of hydrogen scavenging catalysts to control polymer molecular weight and hydrogen levels in a polymerization reactor Jun. 26, 2012
8188202 Diene polymer and production process thereof May. 29, 2012
8168556 Racemoselective synthesis of ansa-metallocene compounds, ansa-metallocene compounds, catalysts comprising them, process for producing an olefin polymer by use of the catalysts, and olefin homo May. 1, 2012
8163860 Norbornene copolymer and production method thereof Apr. 24, 2012
8158733 Catalysts based on 2-(2-aryloxy)quinoline or 2-(2-aryloxy)dihydroquinoline ligands Apr. 17, 2012
8158735 Adhesive bonding system having adherence to low energy surfaces Apr. 17, 2012
8158732 Method for preparing cyclic olefin addition polymer of high gas permeability Apr. 17, 2012
8143183 Nano-linked metallocene catalyst compositions and their polymer products Mar. 27, 2012
8129488 Transition metal complexes, catalyst compositions containing the same, and olefin polymerization using the catalyst compositions Mar. 6, 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
8084385 Catalysts for olefin polymerization Dec. 27, 2011
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
8084565 Catalyst for polymerization of conjugated diene and method of polymerizing conjugated diene using the catalyst, rubber composition for tires, and rubber composition for golf balls Dec. 27, 2011
8084563 Cyclic olefin addition copolymer, process for production thereof, and retardation film obtained from the copolymer Dec. 27, 2011
8076428 Ethylene copolymer having multiple pitch molecular weight distribution and the method of preparing the same Dec. 13, 2011
8071800 Borohydride metallocene complex of a lanthanide, catalytic system including said complex, polymerization method using same and ethylene/butadiene copolymer obtained using said method Dec. 6, 2011
8071700 Borohydride metallocene complex of a lanthanide, catalytic system including said complex, polymerization method using same and ethylene/butadiene copolymer obtained using said method Dec. 6, 2011
8067511 Ethylene copolymer and a method of preparing the same Nov. 29, 2011
8067652 Processes for controlling the viscosity of polyalphaolefins Nov. 29, 2011
8058200 Catalysts for olefin polymerization Nov. 15, 2011

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