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| Number | Title | Issue Date |
| 8110518 | Fluorinated transition metal catalysts and formation thereof Supported catalyst systems and methods of forming the same are described herein. In one specific embodiment, the methods generally include providing an inorganic support material and contacting the inorganic support material with an aluminum fluoride compound repres... | 02/07/2012 |
| 7820580 | Nickel-based catalysts for preparing high cis 1,4-polydienes A nickel-carbene polymerization catalyst system for preparing high cis polydienes is provided. The catalyst system comprises (a) a nickel N-heterocyclic carbene complex, (b) an organoaluminum compound, (c) a fluorine-containing compound, and (d) optionally, an alcoh... | 10/26/2010 |
| 7585805 | Nickel-based catalyst composition A catalyst composition that is the combination of or the reaction product of ingredients comprising (a) a nickel-containing compound, (b) an alkylating agent, (c) a fluorine-containing compound, and (d) a chlorine-containing compound. ... | 09/08/2009 |
| 7501372 | Catalyst compositions for producing polyolefins in the absence of cocatalysts 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 supported catalyst composition. One aspect of this invention is the prepr... | 03/10/2009 |
| 7371802 | Components and catalysts for the polymerization of olefins The present invention relates to a solid catalyst component for the polymerization of olefins CH2═CHR in which R is hydrogen or a hydrocarbon radical with 1-12 carbon atoms, comprising Mg, Ti, halogen and an electron donor selected from thiophene dicarb... | 05/13/2008 |
| 7351776 | Bulk polymerization process A method for the continuous production of polydienes, the method comprising the steps of (a) charging a mixture of one or more monomer, catalyst system, and less than 50% weight percent organic solvent based on the total weight of the monomer, catalyst and solvent, ... | 04/01/2008 |
| 7348293 | Homogeneous modified-alumina Fischer-Tropsch catalyst supports A homogeneous, amorphous catalyst support comprising a modifying-metal-oxide and a base-metal oxide, the catalyst support having a Surface to Bulk modifying-metal/base-metal atomic ratio of from about 0.6 to about 1.3 and exhibiting an X-ray diffraction having broad... | 03/25/2008 |
| 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 |
| 7329624 | Regenerable adsorbents for the purification of silicone based solvents An adsorbent for removal of impurities from silicone based solvents is presented. The adsorbent is regenerable for repeated use in cleaning silicone based solvents. ... | 02/12/2008 |
| 7256150 | Preparation of olefin polymerization catalyst component A process for producing a Gp 2/transition metal olefin polymerisation catalyst component, in which a Gp 2 complex is reacted with a transition metal compound so as to produce an oil-in-oil emulsion, the disperse phase containing the preponderance of the Gp 2 metal b... | 08/14/2007 |
| 7214642 | Methods of preparing active chromium/alumina catalysts via treatment with sulfate Methods of preparing a polymerization catalyst are provided that include contacting a support comprising alumina with a sulfating agent and with chromium. In an embodiment in which the chromium is provided from a chromium compound such as chromium oxide, the support... | 05/08/2007 |
| 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 |
| 7172988 | Catalyst component for ethylene polymerization, a process for preparing thereof and catalyst comprising the same A catalyst component for ethylene polymerization, including an inorganic oxide support, and at least one alkyl metal compound, at least one halide, at least one dihydrocarbyl magnesium compound, at least one difunctional compound that reacts with the dihydrocarbyl m... | 02/06/2007 |
| 7163905 | Polymerization catalyst system using di-sec-butyldimethoxysilane for preparation of polypropylene It has been discovered that using di-sec-butyldialkoxysilanes, such as di-sec-butyldimethoxysilane (DSBDMS), as external electron donors for Ziegler-Natta catalysts can provide a catalyst system that may prepare polypropylene films with improved properties and proce... | 01/16/2007 |
| 7112643 | Polymers having low levels of long chain branching and methods of making the same Methods of producing a polymer include contacting at least one olefin with a catalyst prepared by contacting a support comprising alumina with a sulfating agent and with chromium. Polymer compositions produced in this manner may exhibit relatively low levels of long... | 09/26/2006 |
| 7109277 | Polymerization catalysts A process to produce a polymer is provided. The process comprising contacting a treated solid oxide compound, an organometal compound, and an organoaluminum compound in the presence of an alpha olefin under polymerization conditions to produce the polymer. ... | 09/19/2006 |
| 7094849 | Bulk polymerization process for producing polydienes A method of producing cis-1,4-polydienes, the method comprising the step of contacting conjugated diene monomer with a lanthanide-based catalyst system in the presence of less than 20% by weight of organic solvent based on the total weight of monomer, organic solven... | 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 |
| 7081426 | Method for improving crystalline titanosilicate catalyst having MWW structure A method for improving a crystalline titanosilicate catalyst having an MWW structure, characterized in that it comprises treating the crystalline titanosilicate catalyst having a MWW structure with a silylating agent. ... | 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 |
| 7060646 | Supported catalyst composition for polymerization of olefins, method for preparing the same and process for polymerization using the same Supported catalyst composition for polymerization of olefins comprising: (i) a titanium compound, a magnesium compound and at least one electron donor compound; (ii) a chlorine containing polymer support; and (iii) a cocatalyst comprising at least one aluminum compo... | 06/13/2006 |
| 7060766 | Methods of forming a supported activated catalyst composition Processes of forming a supported activated catalyst composition and method of polymerization are disclosed, the process of forming the composition including combining a halogenated aromatic aluminum activator compound with a fluorinated support and a catalyst to for... | 06/13/2006 |
| 7053160 | Metallocene monohalogenides Novel metallocene monohalides can be used in the polymerization of olefins. ... | 05/30/2006 |
| 7049453 | “Constrained geometry” metallocenes, method for the production thereof and use of the same for the polymerisation of olefins The present invention relates to a process for preparing specific transition metal compounds, novel transition metal compounds and also catalyst systems and their use for the homo- or copolymerization of olefins. ... | 05/23/2006 |
| 7041617 | Catalyst compositions and polyolefins for extrusion coating applications 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 supported catalyst composition. In one aspect, the present invention enco... | 05/09/2006 |
| 7009012 | Supported catalyst for producing syndiotactic styrenic polymer The present invention provides a supported catalyst comprising (A) a polymer (B) a supporter, (C) a transition metal compound, and optionally (D) (a) a compound which can form an ionic complex by the reaction with the transition metal compound or (b) a specific oxyg... | 03/07/2006 |
| 7009015 | Alpha-olefin polymerization catalyst system which contains an aromatic silane compound Aromatic silane compounds containing at least an aromatic ring bound directly to the silicon atom, wherein the aromatic ring has at least one substituent located in the ortho position selected from C1-10 hydrocarbon groups, are useful as electron donors i... | 03/07/2006 |
| 7005487 | Catalyst system for the polymerization of olefins A solid catalyst component for the polymerization of olefins, comprising: an inert porous support, Mg, Ti, halogen and an electron donor selected from succinates of formula (I) wherein the radicals R1 and R2 equal to or different form each othe... | 02/28/2006 |
| 7001961 | Catalyst composition and methods for its preparation and use in a polymerization process The present invention relates to a catalyst composition and a method for making the catalyst composition which comprises a polymerization catalyst and at least one gelling agent. The invention is also directed to the use of the catalyst composition in the polymeriza... | 02/21/2006 |
| 6992034 | Catalyst component for olefin polymerization A solid catalyst component useful for the (co)-polymerization of olefins is disclosed. The catalyst component is prepared by reacting an activated magnesium halide composite support with a halogenized transition metal compound and a chelating diamide compound in the... | 01/31/2006 |
| 6992036 | Catalyst systems, method for preparing and using same in a polymerization process A polymerization catalyst system and process, which utilizes a Group 14 and Group 16 containing non-crystalline compound to solubilize or emulsify polymerization catalyst components, is disclosed. ... | 01/31/2006 |
| 6989342 | Catalyst for polymerization and copolymerization of ethylene A solid titanium complex catalyst for polymerization and copolymerization of ethylene is prepared by the process comprising: (1) preparing a magnesium solution by reacting a halogenated magnesium compound with an alcohol; (2) reacting the magnesium solution with a p... | 01/24/2006 |
| 6933258 | Catalyst composition and methods for its preparation and use in a polymerization process The present invention relates to a catalyst composition and a method for making the catalyst composition which comprises a polymerization catalyst and at least one gelling agent. The invention is also directed to the use of the catalyst composition in the polymeriza... | 08/23/2005 |
| 6927261 | Method of making supported transition metal polymerization catalysts and compositions formed therefrom The present invention is directed to a novel one-step method for forming a supported catalyst complex of high activity by substantially simultaneously contacting a bidentate or tridentate ligand forming compound, a transition metal compound and a Lewis acid support-... | 08/09/2005 |
| 6916895 | Ziegler-Natta catalyst for tuning MWD of polyolefin, method of making, method of using, and polyolefins made therewith A new synthesis of a Ziegler-Natta catalyst uses a multi-step preparation that includes treating a magnesium dialkoxide compound with halogenating/titanating agents, an organoaluminum preactivating agent, and a heat treatment. The catalyst may be used in the polymer... | 07/12/2005 |
| 6900154 | Methods of forming a supported activated catalyst composition Processes of forming a supported activated catalyst composition and method of polymerization are disclosed, the process of forming the composition including combining a halogenated aromatic aluminum activator compound with a fluorinated support and a catalyst to for... | 05/31/2005 |
| 6900152 | 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: (iii) ... | 05/31/2005 |
| 6867160 | High activity catalyst for high molecular weight polyolefins By controlling the hold up times and temperatures for mixing the components of aluminum, titanium and magnesium based catalyst for solution polymerization it is possible to prepare a catalyst having a high activity, which prepares high molecular weight polyolefins. ... | 03/15/2005 |
| 6858685 | Solid catalyst component for olefin polymerization, process for producing the same, process for producing catalyst for olefin polymerization, and process for producing olefin polymer There is provided a process for producing a catalyst for olefin polymerization, which comprises the step of contacting (1) an organ aluminum compound, (2) an external electron donor compound and (3) a solid catalyst component obtained by a process comprising the ste... | 02/22/2005 |
| 6855654 | Bimetallic catalyst for ethylene polymerization reactions with uniform component distribution The invention relates to a process for uniformly dispersing a transition metal metallocene complex on a carrier comprising (1) providing silica which is porous and has a particle size of 1 to 250 microns, having pores which have an average diameter of 5... | 02/15/2005 |
