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8163853 Metallocene-substituted pyridyl amines, their metal complexes, and processes for production and use thereof  
This invention relates to new transition metal complexes for use in olefin polymerization and oligomerization. The active complex is a pyridine amide having a metallocenyl substituent as part of...
8148564 Compounds for forming metal nitrides  
Nitride forming precursors are heated to form a metal nitride on a substrate. In some variations, the precursors are contacted with the substrate which has previously been heated to a sufficient...
8138286 ***WITHDRAWN PATENT AS PER THE LATEST USPTO WITHDRAWN LIST***
Cycloolefin copolymers, a process for their preparation and the use thereof and catalysts  
Cycloolefin copolymers which are distinguished by the presence of racemic diads of repeating polycyclic units and additionally by racemic triads of repeating polycyclic units are described. These...
8029959 Charge control agent and toner comprising the same  
Taught herein is a charge control agent comprising a specific type of gallic acid metal complex represented by the following Chemical Formula (1) or Chemical Formula (2): In the formula (1), R1...
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...
7973114 Monocyclopentadienyl complexes  
Monocyclopentadienyl complexes in which the cyclopentadienyl system bears at least one unsubstituted, substituted or fused, heteroaromatic ring system bound via a specific bridge, a catalyst system...
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...
7888522 Oxygen-bridged bimetallic complex and polymerization process  
An oxygen-bridged bimetallic complex of the general formula (I) Cp2R1M1-O-M2R22Cp (I), wherein Cpis independently a cyclopentadienyl, indenyl or fluorenyl ligand which can be substituted, or a...
7858718 Catalysts based on 2-aryl-8-anilinoquinoline ligands  
Catalysts useful for polymerizing olefins are disclosed. The catalysts comprise an activator and a Group 4 metal complex that incorporates a dianionic, tridentate 2-aryl-8-anilinoquinoline ligand....
7847039 Transition metal complexes, and catalysts compositions for preparing ethylene homopolymers or copolymers  
Disclosed are a transition metal complex having a high catalytic activity for the preparation of an ethylene homopolymer or a copolymer of ethylene and α-olefin and a catalyst composition ...
7776980 Monocyclopentadienyl complexes  
Monocyclopentadienyl complexes in which the cyclopentadienyl system bears at least one bridged keto, thioketo, imino or phosphino group, a catalyst system comprising at least one of the...
7678933 Transition metal complexes and preparation methods thereof  
The present invention provides a novel mononuclear transition metal compound, a novel binuclear transition metal compound, a novel organic amine or phosphorous compound, and a method for preparing...
7645844 Transition metal complexes, catalyst compositions containing the same, and methods for preparing ethylene homopolymers or copolymers of ethylene and α-olefins using the same  
The present invention relates to a transition metal complex and a transition metal catalyst composition comprising the same for the preparation of an ethylene homopolymer or a copolymer of ethylene...
7635396 Process for separating zirconium and hafnium  
The present invention provides a new process for separating zirconium and hafnium compounds, in particular to remove traces of zirconium compounds from hafnium compounds, using fractional...
7629481 Ansa-metallocene compound, process of preparing the same, and process of preparing polyolefin using the same  
Provided are a bridged metallocene compound particularly suitable for copolymerization of ethylene and alpha-olefin or cyclic olefin, a process of preparing the metallocene compound, and a process...
7595413 Phosphine-substituted vinyl containing metallocene catalyst, preparation process and the application of the same  
The invention relates to a phosphine-substituted vinyl containing metallocene catalyst, and also to the preparation process of the same as well as to the application of the catalyst. The catalyst...
7592401 Multinuclear half metallocene catalyst and method for preparing syndiotatic polystyrene using the same  
Disclosed is a multinuclear transition metal half metallocene catalyst having a multinuclear half metallocene structure in which a transition metal of groups 3 to 10 on periodic table is connected...
7592404 Half metallocene catalyst and process for preparing syndiotactic styren polymer using the same  
The present invention relates to a transition metal half metallocene catalyst with a noble structure for preparing syndiotatic styrene polymer having high activity, superior stereoregularity, high...
7589160 Process for preparing 1-butene polymers  
A process for obtaining 1-butene polymers comprising the step of contacting under polymerization conditions 1-butene and optionally ethylene, propylene or said alpha-olefin, in the presence of a...
7569713 Hydrogenated catalyst  
The invention discloses a method for making a hydrogenated metallocene catalyst component comprising the steps of: 1. Providing a compound comprising at least one aromatic group; 2. Hydrogenating...
7569646 Group IVB transition metal compounds  
The invention is a Group IVB transition metal compound which may be employed in the polymerization of olefins to produce high molecular weight polymers.
7550537 Organo-dilithium compound and process for preparing the same  
Disclosed is an anionic diinitiator prepared using a diisopropenyl benzene compound and an organo lithium compound having primary polymerization sites. The anionic diinitiators are prepared by...
7531608 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 amine-based group is introduced is coordinated, a method of synthesizing the same, and olefin...
7521572 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...
7468451 Process for the production of halide metallocene compounds  
Process for preparing halide metallocene compounds comprising the step of reacting the dialkyl derivative with a halogenating agent of formula R3xTLw wherein: L is chlorine, iodine or bromine; R3...
7465688 Process for the isomerization of metallocene compounds  
An isomerization process comprising the step of contacting a slurry or a solution comprising the meso or meso-like form of one or more bridged metallocene compounds of group 4 of the Periodic Table...
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...
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 Group IVB of the Periodic Table such as...
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...
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 substituted by hydrogen,...
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...
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...
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.
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...
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 different...
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, R3 and R4...
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...
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)n is a...
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.
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 of o...
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...
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...
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 ...
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...
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...
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...
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,...
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...
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 from hydrogen, alkyl, aryl...
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...
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