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| Number | Title | Issue Date |
| 7410926 | Polymerization process using a supported, treated catalyst system The present invention relates to a supported, treated catalyst system and its use in a process for polymerizing olefin(s). More particularly, it provides a supported, treated catalyst system produced by a process comprising the steps of: (a) forming a supported bime... | 08/12/2008 |
| 7396888 | Catalyst system comprising a mixture of catalyst components for producing a polyolefin blend Provided is a catalyst system for producing a polyolefin blend, which catalyst system comprises a mixture including the following catalyst components: i) a catalyst component A capable of producing an isotactic olefin polymer, and/or a catalyst component A′ capabl... | 07/08/2008 |
| 7361622 | Multi-staged catalyst systems and process for converting alkanes to alkenes and to their corresponding oxygenated products Alkenes, unsaturated saturated carboxylic acids, saturated carboxylic acids and their higher analogues are prepared cumulatively from corresponding alkanes utilizing using a multi-staged catalyst system and a multi-stage process which comprises steam cracking of alk... | 04/22/2008 |
| 7354880 | 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 of a polymerization catalyst and a carboxylate metal salt. The invention is also directed to the use of the catalyst composition in the polymerization of olefin(... | 04/08/2008 |
| 7294679 | Catalyst support method and polymerization with supported catalysts This invention relates to a method to support one or more catalyst compounds comprising contacting the catalyst compounds with a pretreatment agent comprising an aluminum alkyl and or an alumoxane in solution and thereafter contacting the combination with a supporte... | 11/13/2007 |
| 7259122 | Chemically-resistant shelter coating A shelter coating comprising polyvinyl alcohol and polyethyleneimine is disclosed. The shelter coating may optionally further include a photocatalyst capable of generating singlet oxygen from ambient air. The shelter coating may optionally include a singlet oxygen s... | 08/21/2007 |
| 7226886 | Polymerization catalysts and process for producing bimodal polymers in a single reactor Catalyst compositions comprising a first metallocene compound, a second metallocene compound, an activator-support, and an organoaluminum compound are provided. An improved method for preparing cyclopentadienyl complexes used to produce polyolefins is also provided.... | 06/05/2007 |
| 7220696 | Solid titanium catalyst component for olefin polymerization, catalyst for olefin polymerization, and process for olefin polymerization Disclosed is a catalyst for olefin polymerization comprising [I] a solid titanium catalyst component [S] comprising titanium, magnesium, halogen and an electron donor (b), which is obtained by bringing a solid adduct consisting of a magnesium compound and an electro... | 05/22/2007 |
| 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 |
| 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 |
| 7202316 | Modified particle, catalyst component for addition polymerization, catalyst for addition polymerization and process for producing addition polymer A modified particle obtained by a process containing contacting a Bi compound, a compound having an electron-withdrawing group and an active hydrogen and particle; and a catalyst component for addition polymerization containing the modified particle; a catalyst for ... | 04/10/2007 |
| 7192902 | Polymerization process with mixed catalyst compositions The application describes a mixed olefin polymerization catalyst composition comprising a support, a reaction product of at least one first organometallic compound and a first activator capable of rendering the first organometallic compound active for insertion poly... | 03/20/2007 |
| 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 |
| 7119153 | Dual metallocene catalyst for producing film resins with good machine direction (MD) elmendorf tear strength This invention relates to catalyst compositions comprising a first metallocene compound, a second metallocene compound, at least one chemically-treated solid oxide, and at least one organoaluminum compound. This invention also relates to methods to prepare and use t... | 10/10/2006 |
| 7064096 | Dual catalyst on a single support Bimodal polyolefins having a reverse or partial reversed comonomer incorporation may be prepared in the presence of a dual catalyst on the same support wherein each catalyst has a different response to temperature, ethylene partial pressures, partial pressure of non... | 06/20/2006 |
| 7022782 | Homogeneous type solid catalyst component or homogeneous type solid catalyst, process for production thereof and process for producing addition polymer with the same A process for producing a homogeneous type solid catalyst component or a homogeneous type solid catalyst comprising a step for removing a fine-powdery component and/or a shapeless component utilizing a difference between their sedimentation velocities of the catalys... | 04/04/2006 |
| 6972270 | Catalyst modifiers and their use in the polymerization of olefin(s) The present invention relates to the use of at least one acid and at least one base and/or at least one reductant and at least one oxidant that when used with a polymerization catalyst in a polymerization process results in the controllable generation of a catalyst ... | 12/06/2005 |
| 6960549 | Catalyst modifiers and their use in the polymerization of olefin(s) The present invention relates to the use of at least one acid and at least one base and/or at least one reductant and at least one oxidant that when used with a polymerization catalyst in a polymerization process results in the controllable generation of a catalyst ... | 11/01/2005 |
| 6943134 | Bimodal polyolefin production process and films therefrom A process of producing a bimodal polyolefin composition is described, which includes in one embodiment contacting monomers with a supported bimetallic catalyst composition for a time sufficient to form a bimodal polyolefin composition that includes a high molecular ... | 09/13/2005 |
| 6930071 | Ziegler-natta catalyst for polyolefins A Ziegler-Natta type catalyst component can be produced by a process comprising contacting a magnesium dialkoxide compound with a halogenating agent to form a reaction product A, and contacting reaction product A with a first, second and third halogenating/titanatin... | 08/16/2005 |
| 6908876 | Supported metallocene catalyst system for olefin polymerization, method for making and using the same The present invention relates to a supported catalyst system for olefin polymerization which comprises at least one metallocene component and a support of an inorganic oxide of silica, aluminum or a polymer containing hydroxyl groups. The support is modified with an... | 06/21/2005 |
| 6906153 | Dual-site olefin polymerization catalyst composition The invention provides a catalyst system (preferably a heterogeneous catalyst system) comprising: a transition metal bisphenolate catalyst (preferably a group 4 to 6 transition metal bisphenolate catalyst) and another olefin polymerization catalyst, and optionally a... | 06/14/2005 |
| 6903169 | LTMC polymerization of unsaturated monomers A process for polymerizing unsaturated monomers is disclosed. The process comprises polymerizing, in the presence of a late transition metal catalyst (LTMC), a variety of unsaturated monomers which are traditionally, some of which are exclusively, made by free radic... | 06/07/2005 |
| 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 |
| 6887819 | Compositions that can produce polymers This invention provides compositions that are useful for polymerizing at least one monomer into at least one polymer. ... | 05/03/2005 |
| 6887956 | Catalyst system for high-cis polybutadiene A catalyst system suitable for use in the production of high cis polybutadiene is disclosed. The catalyst system includes a cobalt salt of the formulaCoAx?, where A is a monovalent or divalent anion and x is 1 or 2; an alkyl aluminum chloride compound of ... | 05/03/2005 |
| 6884747 | Linear low density polyethylenes with high melt strength and high melt index ratio Linear low density polyethylenes (LLDPEs) that have relatively high melt index ratios (MIR) and relatively high melt strength (MS) are described. This combination of melt properties is achieved by a substantially non-blended LLDPE. Catalysts used to produce these po... | 04/26/2005 |
| 6875719 | Catalyst composition for preparing olefin polymers A catalyst composition for preparing olefin polymers. The catalyst composition includes a metallocene compound and an activating cocatalyst. In the metallocene compound, two cyclopentadienyl groups are bridged by X (carbon) in a ring structure and the bridge X forms... | 04/05/2005 |
| 6870015 | Catalyst component for addition polymerization, process for producing catalyst for addition polymerization and process for producing addition polymer There are provided: (I) a catalyst component for addition polymerization comprising: (i) a transition metal compound having (a) two cyclopentadiene type anion skeleton-carrying groups, which are linked with each other directly or through a bridging gro... | 03/22/2005 |
| 6861485 | Multi-catalyst system for olefin polymerization A multi-catalyst system is disclosed. The catalyst system comprises catalyst A and catalyst B. Catalyst A comprises a supported bridged indenoindolyl transition metal complex. Catalyst B comprises a supported non-bridged indenoindolyl transition metal complex. The c... | 03/01/2005 |
| 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 |
| 6831033 | Method of preparing a catalyst for polymerization and copolymerization of ethylene A solid titanium complex catalyst for polymerization and copolymerization of ethylene is prepared by the process that includes: (1) preparing a magnesium solution by reacting a halogenated magnesium compound with an alcohol; (2) reacting the magnesium solution with ... | 12/14/2004 |
| 6828268 | Polymerization catalyst systems and processes using alkyl lithium compounds as a cocatalyst A catalyst system composition comprising a chromium compound supported on a silica-titania support, wherein said catalyst system has been reduced with carbon monoxide, and a cocatalyst selected from the group consisting of i) alkyl lithium compounds, ii) dialkyl alu... | 12/07/2004 |
| 6825294 | Catalysts for polymerizing styrene and other monomer and process for producing styrene polymer Provided are catalysts for styrene polymerization capable of efficiently and inexpensively producing styrenic polymers having a syndiotactic structure; and a method for producing styrenic polymers. The catalysts comprise (A) a transition metal compound, (B) an oxyge... | 11/30/2004 |
| 6812305 | Method for the production of a catalyst system for the polymerization of olefins A catalyst system for the polymerization of olefins is prepared by initially charging one or more compounds of the formula I a or I b, subsequently adding a molecularly defined activator of the formulae II a to c | 11/02/2004 |
| 6762145 | Method of making a catalyst for polymerization and co-polymerization of ethylene The present invention relates to a catalyst for polymerization and co-polymerization of ethylene. More particularly, the present invention relates to a solid titanium catalyst containing magnesium, wherein said catalyst is produced by preparing a magnesium solution ... | 07/13/2004 |
| 6699813 | Lanthanide-based catalyst composition for the manufacture of polydienes A catalyst composition that is the combination of or the reaction product of ingredients comprising (a) an lanthanide compound, (b) an alkylating agent, (c) a nickel-containing compound, and optionally (d) a halogen-containing compound, with the proviso t... | 03/02/2004 |
| 6683018 | Method for producing a supported catalyst system A process for the preparation of a supported catalyst system, an inorganic carrier material being reacted with a metal compound of the formula in the presence of an inert solvent in a first step and, in a subsequent step, the suspension thus obtained being rea... | 01/27/2004 |
| 6620759 | 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, one of which contains nickel comple... | 09/16/2003 |
