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| Number | Title | Issue Date |
| 8013177 | Method and system for forming a precursor compound for non-bridged unsymmetric polyolefin polymerization catalyst The present techniques relates generally to polyolefin catalysts and, more specifically, to preparing a precursor compound for an unsymmetric metallocene catalyst, for using the precursor compound to prepare catalysts, and for employing the precursor compounds to pr... | 09/06/2011 |
| 7910763 | Process for preparing a monocyclopentadienyl compound 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.... | 03/22/2011 |
| 7538239 | 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... | 05/26/2009 |
| 7507848 | Vapor deposition of metal oxides, silicates and phosphates, and silicon dioxide Metal silicates or phosphates are deposited on a heated substrate by the reaction of vapors of alkoxysilanols or alkylphosphates along with reactive metal amides, alkyls or alkoxides. For example, vapors of tris(tert-butoxy)silanol react with vapors of tetrakis(ethy... | 03/24/2009 |
| 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 |
| 7332618 | Organometallic precursor compounds This invention relates to organometallic precursor compounds represented by the formula (H)mM(R)n wherein M is a metal or metalloid, R is the same or different and is a substituted or unsubstituted, saturated or unsaturated, heterocyclic radica... | 02/19/2008 |
| 7285608 | Metallocene ligands, metallocene compounds and metallocene catalysts, their synthesis and their use for the polymerization of olefins A catalyst system includes a metallocene compound having the formula R9 L1 L2 M1 R1 R2 wherein R9 is a bridge between ligands L1 and L2 and M1 is a metal of... | 10/23/2007 |
| 7271277 | 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... | 09/18/2007 |
| 7268243 | Bis(salicylaldiminato)titanium complex catalysts, highly syndiotactic polypropylene by a chain-end control mechanism, block copolymer containing this Bis(salicylaldiminato)titanium complex with optionally substituted phenyl or cyclohexyl on nitrogen catalyzes highly syndiospecific polymerization of propylene. Syndiotactic polypropylene with defects of the type rmr having [rrrr] content greater than 0.70 and block... | 09/11/2007 |
| 7262313 | Organic silane compound The present invention relates to a novel organic silane compound, and more particularly, to a novel organic silane compound, useful in various applications, for the purpose of improving the affinity of an organic resin to an inorganic filler or improving the adhesio... | 08/28/2007 |
| 7247595 | Supported metallocene catalyst and olefin polymerization using the same A metallocene compound represented by the following Chemical Formula 1: wherein M is a transition metal of Group 4; Cp denotes a cyclopentadienyl ring unsubstituted or su... | 07/24/2007 |
| 7238821 | Method for large scale production of organometallic compounds This invention relates to a one pot method for large scale production of an organometallic compound comprising (i) reacting a hydrocarbon or heteroatom-containing material with a base material in the presence of a solvent and under reaction conditions sufficient to ... | 07/03/2007 |
| 7214749 | Catalyst system for high activity and stereoselectivity in the homopolymerization and copolymerization of olefins The present invention is directed to a novel composition, and to a method of making the composition, the composition being useful in catalyst systems for the homopolymerization and/or copolymerization of olefins, wherein such catalyst systems display a higher level ... | 05/08/2007 |
| 7205364 | Olefin polymerization catalysts The invention is a catalyst system including a Group IV B transition metal component and an alumoxane component which may be employed to polymerize olefins to produce a high molecular weight polymer. ... | 04/17/2007 |
| 7166684 | Transition metal compound, catalyst for olefin polymerization and method for producing polyolefin A novel transition metal compound wherein the transition metal belongs to group 4 of the periodic table and the transition metal compound has a hydrogen atom ligand and three cyclopentadienyl ligands comprising at least one substituted cyclopentadienyl ligand. The n... | 01/23/2007 |
| 7160975 | Methacrylates as stabilizers for polymer polyols This invention relates to ethylenically unsaturated macromers which contain reactive unsaturation, and to a process for preparing these ethylenicallly unsaturated macromers which contain reactive unsaturation. The process of preparing these ethylenically unsaturated... | 01/09/2007 |
| 7157591 | Metallocenes and catalyst compositions derived therefrom Metallocenes and catalyst systems for olefin polymerization derived therefrom. The metallocenes may be represented by the formula: wherein M1 preferably is zirconium or hafnium; and R5 is di... | 01/02/2007 |
| 7141690 | Transition metal complexes, ligands, polymerization catalysts for olefins, and process for production of olefin polymers A transition metal complex represented by the formula (1): wherein M is a Group 4 transition metal, A is a Group 16 element, B is a Group 14 element, n is an integer of 0 or 1, R1, R2, R | 11/28/2006 |
| 7125999 | Process for producing organotitanium compound and process for addition reaction A process for producing an organotitanium compound capable of regioselectively converting a substituted acetylene compound into polysubstituted benzene or polysubstituted pyridine. The process comprises reacting an acetylene compound represented by the formula (1) | 10/24/2006 |
| 7122689 | Titanium substituted pyridyl amine complexes, catalysts and processes for polymerizing ethylene and stryene New compositions, titanium-ligand complexes and arrays with pyridyl-amine ligands are disclosed that catalyze the polymerization of monomers into polymers. These catalysts with titanium metal centers have high performance characteristics, including high styrene inco... | 10/17/2006 |
| 7115761 | Process for the production of monohalide or dihalide metallocene compounds A process for preparing dihalide or monohalide metallocene compounds comprising contacting a compound of formula (II) (Cp)(ZR1m)n(A)rML′y (II) wherein Cp is a cyclopentadienyl radical; (ZR1m | 10/03/2006 |
| 7105672 | Cyclometallated catalysts A catalyst compound of formula I or II: (wherein R1–R11, M, E, T, X, Y, m and n are defined herein). The compound, when combined with a suitable activator, is active for the polymerization o... | 09/12/2006 |
| 7105690 | Method for producing transition metal compounds and their use for the polymerization of olefins The invention relates to a method for producing special transition metal compounds, to novel transition metal compounds and to their use for the polymerization of olefins. ... | 09/12/2006 |
| 7098278 | Olefin polymerization catalyst and polymerization process A polymerization catalyst for the polymerization and copolymerization of olefin monomers and the copolymerization of olefin monomers with other monomers selected from, for example, norbornenes and styrenes are disclosed. The polymerization catalysts disclosed contai... | 08/29/2006 |
| 7074865 | Azaborolyl group 4 metal complexes, catalysts and olefin polymerization process Metal complexes, catalysts derived therefrom, and polymerization processes using the same, characterized by the presence of one or more nitrogen and boron containing, anionic 5-membered cyclic ligand groups, especially 1,2-azaborolyl groups, are disclosed. ... | 07/11/2006 |
| 7067686 | Synthesis of benzyl-metal compounds Disclosed are methods of producing di-, tri- or tetrabenzyl-metal compounds comprising combining a metal salt with a (benzyl)nMgX2-n compound at from less than 30° C., wherein n is 1 or 2 and X is a monoanionic group; wherein the combining tak... | 06/27/2006 |
| 7041841 | 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. ... | 05/09/2006 |
| 7037987 | Olefin polymerization catalyst and polymerization process A polymerization catalyst for the polymerization and copolymerization of olefin monomers and the copolymerization of olefin monomers with other monomers selected from, for example, norbornenes and styrenes are disclosed. The polymerization catalysts disclosed contai... | 05/02/2006 |
| 7019157 | Metallocene compounds, production process for olefin polymers using catalysts containing them and olefin polymers produced by the production process The present invention provides metallocene compounds which exhibit high polymerization activity for production of highly stereoregular polymers, as well as a production process for olefin polymers which employs olefin polymerization catalysts containing the compound... | 03/28/2006 |
| 6987196 | Process for the production of monohalide or dihalide metallocene compounds A process for preparing dihalide or monohalide metallocene compounds comprising contacting a compound of formula (II) (Cp)(ZR1m)n(A)rML′y (II) wherein Cp is a cyclopentadienyl radical; (ZR1m | 01/17/2006 |
| 6984703 | Bridged metallocene compounds as olefin-polymerization catalysts The present invention relates to metallocene compounds consisting of indenyl-cyclopentadienyl groups non-symmetrically joined by a bivalent radical. Said compounds can be conveniently used as components of catalysts for the polymerization of olefins. ... | 01/10/2006 |
| 6982306 | Stannoxy-substituted metallocene catalysts for olefin and acetylene 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... | 01/03/2006 |
| 6960550 | Catalyst systems for high melting thermoplastic elastomeric α-olefin polymers and plastomers A metallocene catalyst system component for polymerization of olefins includes at least one 2-arylindenyl ligand substituted on the 1-position by a substituted or unsubstituted alkyl, alkylsilyl, or aryl substituent of 1 to 30 carbon atoms. ... | 11/01/2005 |
| 6958306 | Activated catalyst systems from substituted dialuminoxane complexes A catalyst composition and method for preparing a supported catalyst system for olefin polymerization is provided. In one aspect, the catalyst composition includes a reaction product of a dialuminoxane and a halogen substituted aryl borane, wherein the reaction take... | 10/25/2005 |
| 6927264 | Metal complexes and polymerization process using same A metal complex useful as a component of a catalyst composition for addition polymerizations comprising an anionic, polycyclic, fused ring ligand system containing at least 4 fused rings, at least one such ring comprising at least one heteroatom, said ligand being b... | 08/09/2005 |
| 6927262 | Bridged biphospholes and metallocenes prepared therefrom The invention relates to novel bridged biphosphole ligands according to the general formula: where R2, R3, R4 are chosen from hydrogen, alkyl, aryl or silyl, R1 is chosen fro... | 08/09/2005 |
| 6919413 | Imino-amide catalyst compositions for the polymerization of olefins The present invention provides a catalyst precursor and catalyst system comprising the precursor, an embodiment of the precursor is selected from the following structures: wherein T is a bridging group; M is selected f... | 07/19/2005 |
| 6906112 | Radiation-curable, cyanoacrylate-containing compositions A radiation-curable composition which includes a cyanoacrylate component or a cyanoacrylate-containing formulation; a metallocene component; and a polymerizingly effective amount of a photoinitiator to accelerate the rate of cure is provided. ... | 06/14/2005 |
| 6900321 | Substituted pyridyl amine complexes, and catalysts New ligands, compositions, metal-ligand complexes and arrays with pyridylamine ligands are disclosed that catalyze the polymerization of monomers into polymers. Certain of these catalysts with hafnium metal centers have high performance characteristics, including hi... | 05/31/2005 |
| 6894129 | Multinuclear half metallocene catalyst and preparation of styrene polymer using the same The present invention relates to a catalyst for preparing vinyl aromatic polymer and styrene polymerization using the same, and particularly to a transition metal half metallocene catalyst with a novel structure for preparing syndiotactic styrene polymer having high... | 05/17/2005 |
