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| Number | Title | Issue Date |
| 8043990 | Catalyst system for polymerization of olefins The invention relates to a catalyst system for polymerization of olefins, the catalyst system comprising a titanium-containing procatalyst carrying internal electron donor(s), an organoaluminium cocatalyst and a mixture of external electron donors, the mixture compr... | 10/25/2011 |
| 8022005 | Halogen substituted heterocyclic heteroatom containing ligands-alumoxane activation of metallocenes This invention relates to an activator, catalyst system, and the use thereof. In one aspect, the catalyst system includes one or more polymerization catalysts and at least one activator. The activator comprises one or more heterocyclic heteroatom containing ligands ... | 09/20/2011 |
| 7871952 | 2-hydroxypyridine N-oxide-modified ziegler-natta catalyst system A modified Ziegler-Natta catalyst system, a method for preparing the catalyst system, and a process for polymerizing an olefin in the presence of the catalyst system are disclosed. The catalyst system comprises a titanium or vanadium compound, an aluminum compound, ... | 01/18/2011 |
| 7820581 | 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... | 10/26/2010 |
| 7618912 | Preparation of supported catalyst systems The present invention relates to a process for preparing a catalyst solid for olefin polymerization which is obtainable by bringing A) at least one organic transition metal compound, B) at least one organometallic compound, C) ... | 11/17/2009 |
| 7618913 | Highly active alpha-olefin copolymerization catalyst system A high activity magnesium-based supported catalyst component useful in a catalyst system for the compolymerization of ethylene and alpha-olefin and a process for preparing the catalyst component is described. In the process, alkoxysilane ester is contacted with a ha... | 11/17/2009 |
| 7427653 | Catalyst components for the polymerization of olefins A catalyst component for olefin (co)polymerization, and in particular for the preparation of LLDPE, comprising Mg, Ti, halogen and an electron donor compound (ED) belonging to ethers, esters, amines, ketones, or nitriles, characterized in that the molar ratio Mg/Ti ... | 09/23/2008 |
| 7425661 | Methods for oligomerizing olefins The present invention provides a method of producing oligomers of olefins, comprising reacting olefins with a catalyst under oligomerization conditions. The catalyst can be the product of the combination of a chromium compound and a pyridyl amine or a heteroaryl-ami... | 09/16/2008 |
| 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 |
| 7341977 | Method of sorbing sulfur compounds using nanocrystalline mesoporous metal oxides Compounds and methods for sorbing organosulfur compounds from fluids are provided. Generally, compounds according to the present invention comprise mesoporous, nanocrystalline metal oxides. Preferred metal oxide compounds either exhibit soft Lewis acid properties or... | 03/11/2008 |
| 7314903 | Catalyst system for the polymerization of olefins An organometallic compound obtainable by contacting: a compound having the following formula (I), wherein: Ra is a hydrocarbon radical; Rb, Rc and Rd, are hydrogen atoms, halogen atoms, or hydrocarbon radicals; with a Lewi... | 01/01/2008 |
| 7309678 | Polyamide supported metallocene catalysts Supported stereospecific catalysts and processes for the stereotactic propagation of a polymer chain derived from ethylenically unsaturated monomers such as the polymerization of propylene to produce syndiotactic polypropylene or isotactic polypropylene. The support... | 12/18/2007 |
| 7304159 | Ligands and catalyst systems thereof for ethylene oligomerisation to linear alpha olefins Mixed bis-imine pyridine ligands of formula (I), wherein Z1, which is different from Z2, is an optionally substituted aryl group; and Z2 comprises an optionally substituted heterohydrocarbyl moiety, or an optionally substituted aryl ... | 12/04/2007 |
| 7285513 | Preparation of catalyst systems The present invention relates to a process for preparing a catalyst for olefin polymerization which is obtainable by bringing A) at least one organic transition metal compound, B) a mixture of at least two different organo metallic compound... | 10/23/2007 |
| 7285607 | Polymerisation of olefinic compounds This invention relates to a process for producing a polymeric product by the polymerisation of at least one olefinic compound in the form of an olefin or a compound including an olefinic moiety by contacting the at least one olefinic compound with a polymerisation c... | 10/23/2007 |
| 7247596 | Stabilized organoborane polymerization initiators and polymerizable compositions The invention is polymerizable compositions comprising in one part an organoboron compound capable of forming a free radical generating species and a stabilizing amount of one or more compounds comprising a dihydrocarbyl hydroxyl amine, an alicyclic hydroxyl amine, ... | 07/24/2007 |
| 7238758 | Catalysts for polymerization or copolymerization of α-olefins, catalyst components thereof, and processes for polymerization of α-olefins with the catalysts The invention has an object to provide a catalyst for polymerizing or copolymerizing an α-olefin, catalyst constituent thereof, and method of polymerizing α-olefins with the catalyst, for production of α-olefin polymers or copolymers with high hydrogen response, ... | 07/03/2007 |
| 7238764 | Process for the co-oligomerisation of ethylene and alpha olefins A process for production of higher linear alpha olefins and/or alkyl-branched alpha olefins, which comprises the co-oligomerisation of one or more alpha olefins with ethylene in the presence of a metal catalyst system employing one or more bis-aryliminepyridine MX | 07/03/2007 |
| 7232785 | Solid catalytic component and catalytic system of the ziegler-natta type, process for their preparation and their use in the polymerization of alk-1-enes The present invention relates to a new solid catalytic component, which can be used in combination with an aluminum compound as co-catalyst and optionally an external electron donor as additional co-catalyst to form a catalytic system of the Ziegler-Natta-catalyst-t... | 06/19/2007 |
| 7230060 | Removable coating compositions A coating composition is described comprising a multi-stage emulsion polymer that is both radiation curable, removable and includes chemically reactive functional groups in the coating that react with one or more conventional chemical stripping agents, effecting the... | 06/12/2007 |
| 7220805 | Process for producing contact product; catalyst component for addition polymerization; process for producing catalyst for addition polymerization; and process for producing addition polymer There are provided (1) a process for producing a contact product, which comprises the step of contacting at least a phthalocyanine complex, a porphyrin complex, or their combination with a surfactant; (2) a catalyst component for addition polymerization, which compr... | 05/22/2007 |
| 7220695 | Supported activator This invention relates to supported activators comprising the product of the combination of an ion-exchange layered silicate, an organoaluminum compound, and a heterocyclic compound, which may be substituted or unsubstituted. This invention further relates to cataly... | 05/22/2007 |
| 7214638 | Olefin polymerization catalyst composition comprising group 13 amide derivatives Catalyst compositions that are highly tolerant of catalyst poisons for use in addition polymerizations comprising a catalytic derivative of a Group 4 metal complex, a cocatalyst, and a Group 13 metal amide compound. ... | 05/08/2007 |
| 7208559 | Ethylened polymer and molded object obtained therefrom An ethylene-based polymer which is an ethylene/C4 to C10 α-olefin copolymer and satisfies the following requirements [k1] to [k3]: [k1] melt flow rate (MFR) under a loading of 2.16 kg at 190° C. is in the range of 1.0 to 50 g/10 minutes; [k2] LNR defined as a scal... | 04/24/2007 |
| 7199201 | Synthetic polyisoprene rubber The neodymium catalyst system prepared by the technique of this invention can be used in the polymerization of isoprene monomer into synthetic polyisoprene rubber having an extremely high cis-microstructure content and high stereo regularity. This polyisoprene rubbe... | 04/03/2007 |
| 7193022 | Method of polymerization and copolymerization of ethylene Disclosed is a method of polymerization and copolymerization of ethylene, which is carried out in the presence of (a) a solid titanium complex catalyst prepared by the steps of (i) preparing a magnesium solution by contacting halogenated magnesium compounds with alc... | 03/20/2007 |
| 7179871 | Non-symmetrical ligands and catalyst systems thereof for ethylene oligomerization to linear alpha olefins Non-symmetrical ligands of formula (I); bis-aryliminepyridine MXn complexes comprising a non-symmetrical ligand of formula (I), wherein M is a metal selected from Fe or Co, n is 2 or 3, and X is halide... | 02/20/2007 |
| 7166553 | Mixed catalyst compositions for the production of polyolefins A solid, hydrocarbon insoluble catalyst composition comprising: A) a solid, particulated complex comprising moieties of at least magnesium, a Group 4 transition metal, and a halide; B) one or more α-amino-substituted- or α-imino-substituted-2-alkylpyridine compoun... | 01/23/2007 |
| 7166682 | Process to prepare a particulated metallocene catalyst with a modified aluminoxane and use in polymerization of olefins A process for the preparation of an olefin polymerisation catalyst comprising: a) reacting an aluminoxane and a Lewis base in an optionally halogenated hydrocarbon solvent to form a particulate suspension; b) reacting said suspension with a metallocene complex in an... | 01/23/2007 |
| 7148302 | Catalyst for polymerization of norbornene This invention is based upon the discovery that a catalyst system which is comprised of (a) palladium or a palladium compound and (b) a fluorinated alcohol is effective for polymerizing norbornene-functional monomers into polynorbornene-functional polymers. It has b... | 12/12/2006 |
| 7122497 | Olefin polymerization catalyst system A catalyst system useful for polymerizing olefins is disclosed. The catalyst system comprises a cocatalyst and a supported transition metal prepared from a halogen-containing Group 4–6 transition metal compound and an organoaluminum-siloxane containing mixture. Th... | 10/17/2006 |
| RE39246 | Esterification catalysts and processes therefor and therewith A catalyst composition is disclosed. The composition comprises a titanium compound, a complexing agent, hypophosphorous acid or its metal salt, water and optionally a solvent. The complexing agent can be hydroxycarboxylic acid, alkanolamines, aminocarboxylic acids, ... | 08/22/2006 |
| 7091150 | Synthetic polyisoprene rubber The neodymium catalyst system prepared by the technique of this invention can be used in the polymerization of isoprene monomer into synthetic polyisoprene rubber having an extremely high cis-microstructure content and high stereo regularity. This polyisoprene rubbe... | 08/15/2006 |
| 7087547 | Alkali-free demercaptanization catalyst for hydrocarbon compositions A catalyst for oxidative demercaptanization of hydrocarbon compositions, comprising 0.2–5% of an oxide selected from the group consisting of an oxide of a transition metal of group Ib, an oxide of a transition metal of group Vb, an oxide of a transition metal of g... | 08/08/2006 |
| 7084219 | Contact product, and catalyst component and catalyst for addition polymerization, and process for producing addition polymer A contact product obtained by a process comprising the step of contacting a compound (a) represented by the formula, M1L1r, a compound (b) represented by the formula, R1s-1T1H, a compound (c) represen... | 08/01/2006 |
| 7081557 | Method for the oligomerization of olefins using a cycloalkylalkyl-substituted triazacyclohexane Disclosed is a method for the oligomerization of olefins, wherein an olefin is brought into contact with a catalyst system that is obtained from a chromium source, a cycloalkylalkyl-substituted triazacyclohexane, especially a 1,3,5-tris-(cycloalkylalkyl)-1,3,5-triaz... | 07/25/2006 |
| 7078469 | Halogenated organic particles for catalyst supports Polymeric supports, which have been treated with a halosulfonic acid, increase the activity of single-site catalysts used with aluminoxane co-catalysts, resulting in improved ethylene polymerization. The present invention seeks to provide polymeric catalyst supports... | 07/18/2006 |
| 7078362 | Carbene donor-modified Ziegler-Natta catalysts A modified Ziegler-Natta catalyst system comprising a titanium or vanadium compound, a magnesium compound, a carbene donor, and an aluminum compound is disclosed. The invention includes a process which comprises polymerizing an alpha-olefin in the presence of the ca... | 07/18/2006 |
| 7067450 | Soluble late transition metal catalysts for olefin oligomerizations III A series of soluble α-diimine late transition metal catalysts has been invented comprising a substituted or unsubstituted catecholate ligand. The catalysts demonstrate high activity and selectivity for linear α-olefins. As such, these catalysts conveniently oligom... | 06/27/2006 |
