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| Number | Title | Issue Date |
| 8124557 | Supported metallocene catalyst, method of preparing the catalyst and method of preparing polyolefin using the catalyst Provided are a supported metallocene catalyst which has excellent supporting efficiency due to an interaction between a cocatalyst supported on a carrier and a metallocene compound substituted with a functional group that can function as a Lewis base, such as acetal... | 02/28/2012 |
| 7998895 | Catalysts for olefin polymerization Transition metal complexes of selected monoanionic phosphine ligands, which also contain a selected Group 15 or 16 (IUPAC) element and which are coordinated to a Group 3 to 11 (IUPAC) transition metal or a lanthanide metal, are polymerization catalysts for the (co)p... | 08/16/2011 |
| 7977268 | Polymerization of olefins Mixtures of different polyolefins may be made by direct, preferably simultaneous, polymerization of one or more polymerizable olefins using two or more transition metal containing active polymerization catalyst systems, at least one of which contains cobalt or iron ... | 07/12/2011 |
| 7915192 | Catalyst composition comprising shuttling agent for ethylene copolymer formation A composition for use in forming a multi-block copolymer from a single polymerizable monomer, said copolymer containing therein two or more segments or blocks differing in branching index, a polymerization process using the same, and the resulting polymers, wherein ... | 03/29/2011 |
| 7906451 | Mixed polymerization catalyst component for polymerizing olefins Catalysts for the polymerization of olefins are provided. The catalysts comprise: (a) a first active polymerization catalyst which is a Fe or Co complex of a ligand of the formula: ... | 03/15/2011 |
| 7696123 | Dimerization catalyst systems, their preparation, and use A method for preparing a nickel-containing composition, and a composition prepared by such method, are disclosed including the steps of: a) mixing a phosphorous compound with a nickel complex having nickel bonded to a heteroatom to thereby form a nickel-phosphorous-... | 04/13/2010 |
| 7622414 | Organometal catalyst compositions This invention provides compositions that are useful for polymerizing at least one monomer to produce a polymer. This invention also provides compositions that are useful for polymerizing at least one monomer to produce a polymer, wherein said composition comprises ... | 11/24/2009 |
| 7601666 | Olefin polymerization catalyst system and process for use thereof A compound represented by the formula: where: M is a transition metal selected from group 4 of the periodic table; each R1 is independently selected from the gr... | 10/13/2009 |
| 7439378 | Fulvene, metallocene catalysts and preparation method thereof, and preparation of polyolefines copolymer using the same The present invention relates to a novel fulvene compound and a preparation method thereof, and more particularly to a fulvene compound having substituted groups in the 2- and 5-positions, prepared from an unsaturated ketone having a substituted group in the β-posi... | 10/21/2008 |
| 7432336 | Catalysts for propylene copolymers The present invention relates to propylene based copolymers and to processes for producing propylene based copolymers, particularly propylene-ethylene copolymers. These unique copolymers are prepared using metallocene catalysts. ... | 10/07/2008 |
| 7432220 | Method for the preparation of olefin polymerization catalyst support and an olefin polymerization catalyst The invention is directed to a process for producing a particulate support for an olefin polymerisation catalyst wherein a solution of a magnesium compound is contacted with a solution of an element of Group (13 or 14) of the Periodic Table (IUPAC) to obtain a solid... | 10/07/2008 |
| 7429635 | Preparation of ultra high molecular weight linear low density polyethylene Disclosed is a method of preparing an ultra-high molecular weight, linear low density polyethylene with a catalyst system that comprises a bridged indenoindolyl transition metal complex, a non-bridged indenoindolyl transition metal complex, an alumoxane activator an... | 09/30/2008 |
| 7417006 | Catalyst system for the polymerization of olefins A salt of formula (I) [HEoR13]+[T1T2]− (I) wherein Eo is a nitrogen or phosphorous atom; R1 is hydrocarbon radical; T1 is a Lewi... | 08/26/2008 |
| 7417097 | Organometal compound catalyst This invention provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer. This invention also provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer, wherein said cata... | 08/26/2008 |
| 7414099 | Hindered polyalicyclic alkyl catalysts and their use in a gas-phase polymerization reactor Embodiments of the present invention include a method of polymerizing olefins comprising contacting olefins with a catalyst composition made by the process of combining a hindered polyalicyclic alkyl catalyst precursor with a particulate inorganic oxide for a deposi... | 08/19/2008 |
| 7410925 | Metal compound, and catalyst component and catalyst for addition polymerization, and process for producing addition polymer A metal compound obtained by a process comprising the step of contacting, in a specific ratio, a compound represented by the formula BiL1r, a compound represented by the formula R1s-1TH, and a compound represented by the f... | 08/12/2008 |
| 7410927 | Catalysts for olefin polymerization This invention relates to the field of olefin polymerization catalyst compositions, and methods for the polymerization and copolymerization of olefins, including polymerization methods using a catalyst composition. One aspect of this invention is the formation and u... | 08/12/2008 |
| 7402546 | Magnesium chloride support The invention relates to supports comprising inorganic oxide particles coated with magnesium chloride and a method for making them. The inorganic oxide has a mean particle diameter of less than 5 microns and is used as a seed to crystallize magnesium chloride from s... | 07/22/2008 |
| 7393965 | Crosslinked metallocene compound for olefin polymerization and method of polymerizing olefin with the same The bridged metallocene compound or the olefin polymerization catalyst which comprises the compound, enables high polymerization activity in polymerizing one or more monomers selected from ethylene and α-olefins. The bridged metallocene compound contains specific s... | 07/01/2008 |
| 7390861 | Cationic group-3 catalyst system A cationic Group 3 or Lanthanide metal complex for coordination polymerization of olefins is disclosed. The precursor metal complex is stabilized by an anionic multidentate ancillary ligand and two monoanionic ligands. The ancillary ligand and the transition metal f... | 06/24/2008 |
| 7390764 | Organometal catalyst compositions This invention provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer This invention also provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer, wherein said catal... | 06/24/2008 |
| 7384884 | Catalyst preparation method This invention relates to a method to prepare a supported catalyst system comprising preparing a combination comprising 1) a first supported catalyst system comprising a support, an activator and a metal catalyst compound, and 2) a second supported catalyst system c... | 06/10/2008 |
| 7384886 | Methods of preparation of an olefin oligomerization catalyst A method of making a catalyst for use in oligomerizing an olefin comprising a chromium-containing compound, a pyrrole-containing compound, a metal alkyl, a halide-containing compound, and optionally a solvent, the method comprising contacting a composition comprisin... | 06/10/2008 |
| 7368516 | Catalyst for trimerization of ethylene and process for trimerizing ethylene using the catalyst A catalyst used for trimerization of ethylene into 1-hexene is descrobed, which comprises (i) a specific organometallic complex having a neutral multidentate ligand having a tripod structure, (ii) an alkylaluminoxane, and an optional ingredient selected from: ... | 05/06/2008 |
| 7361623 | Trimerisation and oligomerisation of olefins using a chromium based catalyst The invention provides a mixed heteroatomic ligand for an oligomerisation of olefins catalyst, which ligand includes at least three heteroatoms, of which at least one heteroatom is nitrogen and at least two heteroatoms are not the same. The invention also provides a... | 04/22/2008 |
| 7358381 | Racemoselective preparation of bridged metallocene complexes having unsubstituted or 2-substituted indenyl ligands The invention relates to a process for preparing racemic metallocene complexes by reacting transition metal complexes with cyclopentadienyl derivatives of alkali metals or alkaline earth metals and heating the reaction mixture obtained in this way to a temperature i... | 04/15/2008 |
| 7354979 | Polymer production at supercritical conditions This invention relates to a process to polymerize olefins comprising contacting, in a polymerization system, olefins having three or more carbon atoms with a catalyst compound, activator, optionally comonomer, and optionally diluent or solvent, at a temperature abov... | 04/08/2008 |
| RE40234 | Process for producing crystalline poly-α-olefins with a monocyclopentadienyl transition metal catalyst system The invention is a catalytic process using a Group IV B transition metal component and an alumoxane component to polymerize α-olefins to produce high crystallinity and high molecular weight poly-α-olefins. ... | 04/08/2008 |
| 7351678 | Catalyst systems for Ziegler-Natta propene polymerisation The invention relates to the use of nitrogenous aluminium organyl complexes of general formula (I) as co-catalysts in heterogeneous polymerisation reactions of propene. In said formula: R, R′, R1 and R1′ independently of one another represe... | 04/01/2008 |
| 7341971 | Production of olefin polymerization catalysts The invention provides a process for producing an olefin polymerization catalyst, comprising an organometallic compound of a transition metal or of an actinide or lanthanide, in the form of solid catalyst particles, comprising forming a liquid/liquid emulsion system... | 03/11/2008 |
| 7342078 | Transition metal compound, ligand system, catalyst system and the use of the latter for polymerisation and copolymerisation of olefins A process for the polymerization of olefins, in particular a process for the copolymerization of propylene with further olefins, is carried out in the presence of highly active catalyst systems comprising specifically selected metallocenes, in particular ones which ... | 03/11/2008 |
| 7335716 | Ethylene (co)polymers and uses thereof An ethylene (co)polymer of the present invention is a (co)polymer with excellent moldability and mechanical properties and either an ethylene homopolymer or a copolymer of ethylene and an α-olefin of 4 to 20 carbon atoms. The (co)polymer has methyl branches measure... | 02/26/2008 |
| RE40121 | Transition metal compound The present invention relates to zwitterionic neutral transition metal compounds. The compounds are suitable as catalyst components for the polymerization of olefins. ... | 02/26/2008 |
| 7332551 | Partially fluorinated naphthyl-based borates Non-coordinating anions or anion precursors are disclosed. These non-coordinating anions serve as the activator for olefin polymerization catalyst systems. As such, they abstract an alkyl leaving group from a metallocene catalyst precursor leaving an activated catal... | 02/19/2008 |
| 7323526 | Supported metallocene-alkyl catalyst composition A supported catalyst composition having improved flow properties is disclosed comprising an alkylalumoxane, a metallocene-alkyl an inorganic oxide support having an average particle size of from 0.1 to 50 μm and calcined at a temperature greater than 600° C., and ... | 01/29/2008 |
| 7319125 | Supercritical polymerization process and polymers produced therefrom This invention relates to a process to produce propylene polymers comprising contacting a metallocene catalyst compound and an activator in a reaction medium comprising propylene, from 0 to 30 volume % of one or more solvents and from 0 to 30 mole % of one or more c... | 01/15/2008 |
| 7319083 | Polymerized catalyst composition A composition is provided that includes a product of combining, in the presence of a free radical initiator a catalyst precursor and at least one monomer wherein the monomer and the catalyst precursor are poiymerizable by free-radical polymerization and wherein the ... | 01/15/2008 |
| 7316833 | Multi-layer thermoplastic films and packages made therefrom A multilayer thermoplastic film, and packages made from the film, comprising a layer of ethylene vinyl alcohol (EVOH) as an oxygen barrier layer, a layer of a polymer or copolymer formed by the polymerization reaction with a single site catalyst and ethylene vinyl a... | 01/08/2008 |
| 7309677 | Supported polymerisation catalysts A method for the preparation of a supported transition metal catalyst system which includes the steps of: (i) mixing together in a suitable solvent (a) an aluminoxane and (b) an ionic activator containing a cation and an anion, wherein the anion has at least one sub... | 12/18/2007 |
| 7309747 | Highly flowable 1-butene polymer and process for producing the same A 1-butene polymer satisfying the following (1), (2) and either (3) or (3′): a process for producing the polymer; a resin modifier comprising the polymer; and a hot-melt adhesive containing the polymer. (1) The intrinsic viscosity [η] as measured in tetralin solv... | 12/18/2007 |
