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| Number | Title | Issue Date |
| 8188200 | Process for preparation of polyolefins via living coordinative chain transfer polymerization Disclosed is a method of producing a polyolefin composition comprising contacting a metallocene pre-catalyst, co-catalyst, and a stoichiometric excess of a metal alkyl; adding a first olefin monomer; and polymerizing the first monomer for a time sufficient to form t... | 05/29/2012 |
| 8178636 | Process for the preparation of atactic 1-butene polymers A process for obtaining atactic 1-butene polymer optionally containing at least one comonomer selected from ethylene, propylene or an alpha-olefin of formula CH2═CHRo, wherein Ro is a linear or branched C3-C20 | 05/15/2012 |
| 8129488 | Transition metal complexes, catalyst compositions containing the same, and olefin polymerization using the catalyst compositions Provided are a novel transition metal complex where a monocyclopentadienyl ligand to which an amido or alcoxy group is introduced is coordinated, a method of synthesizing the same, and olefin polymerization using the transition metal complex. Compared to a conventio... | 03/06/2012 |
| 8106137 | Catalytic aluminum-free combination for polymerizing alpha-olefins and polymerization method using same The invention concerns a novel catalytic combination for polymerizing alpha-olefins based on a titanium diamidide complex. The invention also concerns a method for polymerizing alpha-olefins using said catalytic combination, in the absence of any aluminum-containing... | 01/31/2012 |
| 8101695 | Propylene based terpolymers A propylene-based terpolymer comprising: a) from 10.0% by mol to 79.0% by mol of propylene derived units; b) from 89.5% by mol to 20.5% by mol of 1-butene derived units; and c) from 0.5% by mol to 15% by mol of derived units of... | 01/24/2012 |
| 8058372 | Catalyst composition II This invention relates to a transition metal catalyst compound represented by the formula: LMX2 or (LMX2)2 wherein each M is independently a Group 7 to 11 metal, preferably a Group 7, 8, 9, or 10 metal; each L is, independently, a tr... | 11/15/2011 |
| 8048973 | Transition metal complex, catalyst composition including the same and olefin polymer using catalyst composition Provided are a novel transition metal complex where a monocyclopentadienyl ligand to which an amido group is introduced is coordinated, a catalyst composition including the same, and an olefin polymer using the catalyst composition. The transition metal complex has ... | 11/01/2011 |
| 8008413 | Method for preparing copolymers A method for the preparation of copolymers of ethylene and α-olefins having a fraction (%) of the molecular weight component of >1,000,000 of less than 6% comprises polymerising ethylene and an α-olefin in the presence of a supported polymerisation catalyst system... | 08/30/2011 |
| 7989565 | Polyolefins Process for making a copolymer by copolymerising (1) ethylene with (2) at least one comonomer selected from aliphatic C3-C20 alpha-olefins and (3) 5-ethylidene-2-norbornene, including contacting the monomer with a catalyst comprising a transiti... | 08/02/2011 |
| 7985817 | Homogeneous catalyst system for producing ethylene homopolymer or ethylene copolymers with alpha-olefins Disclosed is a homogeneous catalyst system for producing an ethylene homopolymer or an ethylene copolymer with α-olefin. Specifically, this invention pertains to a transition metal catalyst which has stability under high temperature solution polymerization at 120˜... | 07/26/2011 |
| 7973114 | Monocyclopentadienyl complexes Monocyclopentadienyl complexes in which the cyclopentadienyl system bears at least one unsubstituted, substituted or fused, heteroaromatic ring system bound via a specific bridge, a catalyst system comprising at least one of the monocyclopentadienyl complexes, the u... | 07/05/2011 |
| 7964681 | Chain growth reaction process A process is disclosed for the preparation of zinc alkyl chain growth products via a catalysed chain growth reaction of an alpha-olefin on a zinc alkyl, wherein the chain growth catalyst system employs a group 3-10 transition metal, or a group 3 main group metal, or... | 06/21/2011 |
| 7932331 | Polymerisation of ethylene and α-olefins with imino-quinolinol complexes The present invention discloses active oligomerization or polymerization catalyst systems based on imino-quinolinol complexes. ... | 04/26/2011 |
| 7915360 | Supported catalyst for olefin polymerization using transition metal compound having phenylene-bridge, method for preparing the same, and method for preparing polyolefin using the same The present invention provides a new supported catalyst for olefin polymerization prepared by reacting a novel transition metal compound on a cocatalyst-supported support, in which the transition metal compound is coordinated with a monocyclopentadienyl ligand to wh... | 03/29/2011 |
| 7902308 | Polymerisation catalysts A complex compound comprising the skeletal unit of Formula A, wherein the ring represented by C(R1)-A1-A2-(A3)x-C(R2)—C— has del... | 03/08/2011 |
| 7884165 | Half-metallocene catalyst compositions and their polymer products The present invention provides polymerization catalyst compositions employing half-metallocene compounds with a heteroatom-containing ligand bound to the transition metal. Methods for making these hybrid metallocene compounds and for using such compounds in catalyst... | 02/08/2011 |
| 7868107 | Process for producing cycloolefin addition polymer, catalyst for addition polymerization of cycloolefin, and transition metal compound A process for producing a cycloolefin addition polymer comprising addition-polymerizing a cycloolefin in the presence of a catalyst comprising a combination of a specific transition metal compound of Group 4 of the Periodic Table, with an organoaluminum oxy compound... | 01/11/2011 |
| 7851570 | Precatalysts useful in polyolefin polymerization reactions Compounds are provided that are useful as precatlysts in the polymerization of olefins such as ethylene and propylene. Other compounds are useful as intermediates in the production of such precatalysts. ... | 12/14/2010 |
| 7847039 | Transition metal complexes, and catalysts compositions for preparing ethylene homopolymers or copolymers Disclosed are a transition metal complex having a high catalytic activity for the preparation of an ethylene homopolymer or a copolymer of ethylene and α-olefin and a catalyst composition comprising the same. More specifically, there are provided a transition metal... | 12/07/2010 |
| 7834112 | Method of polymerization of olefins A process for the polymerization of olefins using a metal complex of group 3, 4, 5, 6, 7, 8, 9 or 10 of the Periodic Table comprising at least one group C═NR1, C═PR1, C═O, C═S or a heteroaromatic ring system containing at least one atom... | 11/16/2010 |
| 7812104 | Production of propylene-based polymers In a process for producing a propylene-based olefin homopolymer or copolymer, a monomer composition comprising propylene is contacted with a polymerization catalyst system under homogeneous polymerization conditions (such as solution, supersolution or supercritical ... | 10/12/2010 |
| 7803887 | Metallocene compounds A bridged metallocene compound of formula (I) wherein: M is a transition metal; X, is a hydrogen atom, a halogen atom, or a hydrocarbon group optionally containing hetematoms; L is a divalent bridging group; R1 is a linear C1C40 hydr... | 09/28/2010 |
| 7799880 | Process for the polymerization of olefins A multistep process comprising the following steps: step a) polymerizing propylene and optionally one or more monomers selected from ethylene or alpha olefins of formula CH2═CHT1, wherein T1 is a ... | 09/21/2010 |
| 7781549 | Olefin polymerization process A slurry process for polymerizing ethylene is disclosed. The process comprises polymerizing ethylene in the presence of an α-olefin and a catalyst comprising an activator and a supported bridged indeno[1,2-b]indolyl zirconium complex. The process produces polyethyl... | 08/24/2010 |
| 7728086 | Process for the polymerization of olefins A multistep process comprising the following steps: step a) polymerizing propylene and optionally one or more monomers selected from ethylene or alpha olefins of formula CH2═CHT1 wherein T1 is a C... | 06/01/2010 |
| 7683147 | Polymerization of olefins Olefins are polymerized by novel transition metal complexes of selected iminocarboxylate and iminoamido ligands, sometimes in the presence of cocatalysts such as alkylaluminum compounds or neutral Lewis acids. Olefins which may be (co)polymerized include ethylene, ... | 03/23/2010 |
| 7674867 | Process for the preparation of an metal-organic compound comprising at least one imine ligand The invention relates to a process for the preparation of a metal-organic compound, comprising at least one phosphinimine ligand, characterized in that the HA adduct of a phosphinimine ligand according to formula (1) is contacted with a metal-organic reagent of form... | 03/09/2010 |
| 7649064 | Tridentate metal catalyst for olefin polymerization In accordance with the present invention, there is provided a transition metal olefin polymerization catalyst component characterized by the formula: where, M is a Group IV or a Group IV transition metal, B is a bridge grou... | 01/19/2010 |
| 7598328 | Supported catalysts for manufacture of polymers A supported catalyst composition and process for preparing high molecular weight polymers of one or more addition polymerizable monomers, especially propylene, said composition comprising: 1) a substrate comprising the reaction pro... | 10/06/2009 |
| 7598329 | Process for manufacturing ultra high molecular weight polymers using novel bridged metallocene catalysts The present invention relates to a process for manufacturing ultra high molecular weight polymers by means of polymerization and co-polymerization of olefins using novel bridged metallocene catalysts as well as their catalyst systems. ... | 10/06/2009 |
| 7569648 | Process for the copolymerization of ethylene A process for producing a polymer of ethylene containing from 0.1 to 50% by weight of one or more derived units of alpha-olefins fo formula CH2═CHR, wherein R is a C2-C20 alkyl radical, comprising contacting, under polymerization c... | 08/04/2009 |
| 7557171 | Halogen substituted metallocene compounds for olefin polymerization A metallocene compound comprising a transition metal, a first substituted or unsubstituted indenyl or fluorenyl ligand pi—bonded to the transition metal, a second monoanionic ligand bonded to the transition metal, and a divalent bridging group bonded to the indeny... | 07/07/2009 |
| 7534841 | 1-butene polymer and process for the preparation thereof A 1-butene polymer optionally containing from 0 to 30% by mol of derived units of ethylene, propylene or alpha-olefin of formula CH2═CHZ, wherein Z is a C3-C20 linear or branched alkyl radical, having the following features: ... | 05/19/2009 |
| 7531609 | Process for the preparation of 1-butene/propylene copolymers A solution polymerization process for obtaining isotactic, crystalline or crystallizable 1-butene/propylene polymers comprising contacting under polymerization conditions at a temperature ranging from 50° C. to 90° C. 1-butene and propylene in the presence of a ca... | 05/12/2009 |
| 7524906 | Process for the preparation of a metal-organic compound comprising at least one imine ligand The invention relates to a process for the preparation of a metal-organic compound, comprising at least one imine ligand, characterized in that an imine ligand according to formula 1, or the HA adduct thereof, wherein HA represents an acid, of which H represents its... | 04/28/2009 |
| 7507782 | Transition-metal complexes with tridentate, nitrogen-containing ligands Transition metal complexes with tridentate, nitrogen-containing, uncharged ligand systems, a catalyst system comprising at least one of the transition metal complexes, the use of the catalyst system for the polymerization or copolymerization of olefins and a process... | 03/24/2009 |
| 7498390 | Chromium complexes and their use in olefin polymerization A composition having the formula I where R1 and R2 are independently hydrogen, C1 to C12 linear and branched alkyl, C3 to C12 cycloalkyl, aryl, C1 | 03/03/2009 |
| 7482414 | Transition metal complex ligand and olefin polymerization catalyst containing transition metal complex The invention provides a transition metal complex of formula (3) below: wherein R1, R2, R3, R4, R5, R6, R7 and R8 | 01/27/2009 |
| 7479529 | Fluoralcohol leaving group for non-metallocene olefin polymerization catalysts A catalyst composition and method for olefin polymerization are provided. In one aspect, the catalyst composition is represented by the formula αaβbγgMXn wherein M is a metal; X is a halogenated aryloxy group; β and γ... | 01/20/2009 |
| 7459511 | Process for the polymerization of 1-butene A process for polymerizing 1-butene comprising the step of contacting under polymerization conditions 1-butene and optionally from 0 to 20% by mol of an alpha olefin with a catalyst system obtainable by contacting a bridget metallocene compound of formula (I) wherei... | 12/02/2008 |
