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7619106 |
Preparation of partially hydrogenated rac-ansa-metallocene complexes
The invention relates to a process for preparing hydrogenated or partially hydrogenated, racemic ansa-metallocene complexes by reacting bridged or unbridged transition metal complexes with alkali...
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7618952 |
Silicon compounds with microbiocidal activity
Fungicidal compounds of formula (I): where X is O or S; RING is phenyl or thienyl; Het is a 5- or 6-membered heterocyclic ring containing one to three heteroatoms, each independently selected from...
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7615660 |
Production process of alkoxy-titanium complex
The present invention provides a process for producing an alkoxy-titanium complex of formula (2) by reacting a titanium halide complex of formula (1) with an alkaline earth metal alkoxide:
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7601666 |
Olefin polymerization catalyst system and process for use thereof
A compound represented by the formula:
where:
M is a transition metal selected from group 4 of the periodic table; each R 1 is independently selected from the group consisting of...
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7598408 |
Intermediates for synthesis of vitamin D derivatives
The present invention provides a novel intermediate for synthesizing vitamin D derivatives by using a less expensive material. That is, the present invention provides a compound which is...
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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...
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7547796 |
Organometallic compounds, processes for the preparation thereof and methods of use thereof
This invention relates to organometallic precursor compounds represented by the formula (Cp(R′) x ) y M(H) z-y , a process for producing the organometallic precursor compounds, and a method for...
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7544825 |
Preparation of siloxy-bridged metallocenes
A method for making siloxy-bridged ligand precursors and metallocene complexes is disclosed. Indanone enolates react with cyclopentadienylsilyl compounds to produce ligand precursors, which are...
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7518007 |
Ge precursor, GST thin layer formed using the same, phase-change memory device including the GST thin layer, and method of manufacturing the GST thin layer
Provided are a Ge precursor for low temperature deposition containing Ge, N, and Si, a GST thin layer doped with N and Si formed using the same, a memory device including the GST thin layer doped...
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7468452 |
Process for one-pot synthesis of 1,1-diphenyl-1-(3-substituted-cyclopentadienyl)-1-(2,7-di-t-butyl-fluoren-9-yl)methane type ligands
The present invention is directed to a method of making a ligand which can be used to form an ansa-metallocene. Further, the present invention is directed to a method of making the...
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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 R 3 x TL w wherein: L is chlorine, iodine or bromine;...
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7393965 |
Crosslinked metallocene compound for olefin polymerization and method of polymerizing olefin with the same
The bridged metallocene compound or the olefin polymerization catalyst which comprises the compound, enables high polymerization activity in polymerizing one or more monomers selected from ethylene...
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7329768 |
Chemical vapor deposition precursors for deposition of tantalum-based materials
Tantalum precursors suitable for chemical vapor deposition of tantalum-containing material, e.g., tantalum, TaN, TaSiN, etc., on substrates. The tantalum precursors are substituted cyclopentadienyl...
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7307177 |
Metallocene complexes, their synthesis and use in catalyst systems for olefin polymerization
A metallocene complex is represented by the the formula
(C p R 5 ) n MX k
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7294729 |
Bis-chelating ligand and use thereof in carbonylation processes
A novel bis-chelating composition characterized by formula I: wherein M is a Group VB element; R1 and R2 are each independently selected from hydrogen and monovalent hydrocarbyl radicals; or R1 and...
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7250478 |
Silicon containing cyclopentadienyl ring for metallocene catalyst components
The present invention refers to a metallocene catalyst component for producing polyolefins according to formula (I) R″ s (CpR n ) g (CpR n ) M Q 3-g (I) or according to formula (II) R″(CpR n...
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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...
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7241903 |
Metallocenes, use in catalyst system for producing olefin polymers
A metallocene compound of formula (I): wherein M is zirconium, titanium and hafnium; X is a hydrogen atom, a halogen atom or a hydrocarbon radical; R 1 is a linear C 1 -C 20 -alkyl radical; R 2 ...
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7241849 |
Group III bridged metallocene based on cyclopentadienyl-fluorenyl ligands
The present invention discloses a metallocene catalyst component of formula (Flu-R″-Cp)M(η 3 -C 3 R′ 5 )(ether) n (I) wherein Cp is a cyclopentadienyl, substituted or unsubstituted, Flu is a...
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7238819 |
Process for preparing isobutylene-based polymers
This invention relates to a metal organic compound, a catalytic composition comprising said metal organic compound, a process for homo- or co-polymerizing isoolefines in the presence of said metal...
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7238818 |
Heterocyclic metallocenes and polymerization catalysts
A new class of heterocyclic metallocenes, a catalytic system containing them and a process for polymerizing addition polymerizable monomers using said catalytic system are disclosed; the...
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7223878 |
Reduction of concentration of inorganic by-products and organometallic by-products in the preparation of metallocenes and economical recovery of the starting materials used
A process for separating inorganic and organometallic by-products from a mixture comprising at least one organometallic transition metal compound as product and at least one organometallic...
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7199255 |
Imino-amide catalysts for olefin polymerization
The present invention provides a catalyst precursor, a catalyst system comprising the precursor, and a polymerization method using the catalyst system, an embodiment of the precursor is selected...
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7193099 |
Racemoselective preparation of isolable ansa-metallocene biphenoxide complexes
The invention relates to a process for preparing racemic metallocene biphenoxide complexes by reacting bridged transition metal complexes with cyclopentadienyl derivatives of alkali metals or...
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7169947 |
Dicopper(I) oxalate complexes for use as precursor substances in metallic copper deposition
The invention relates to dicopper(I) oxalate complexes stabilised by neutral Lewis base components and to the use thereof as precursors for the deposition of metallic copper. The neutral Lewis...
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7148356 |
Process for the catalytic synthesis of biaryls and polymers from aryl compounds
A process for producing organic substituted aromatic or heteroaromatic compounds including biaryl and biheteroaryl compounds in a two-step reaction. In the first step, the aromatic or...
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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, R 1 , R 2 , R 3 ...
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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...
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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)(ZR 1 m ) n (A) r ML′ y (II) wherein Cp is a cyclopentadienyl radical;...
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7101959 |
Polymerization catalysts
A subject of the present invention is new compounds having a lanthanide and having a tridentate ligand, a process for their preparation and their use in particular as polymerization catalysts.
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7098354 |
Racemoselective synthesis of rac-diorganosilylbis(2-methylbenzo[e]indeyl)zirconium compounds
The present invention relates to a specific process for the diastereoselective synthesis of rac-diorganosilylbis(2-methylbenzo[e]indenyl)zirconium compounds of the formula I,
by reacting the...
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7087773 |
Group 4 metal complexes containing 4-aryl-substituted, tricyclic indenyl derivatives
Group 4 metal constrained geometry complexes comprising tricyclic 4-arylsubstituted indenyl ligands, especially 1,5,6,7-tetrahydro-4-aryl-s-indacen-1-yl ligands, catalytic derivatives thereof,...
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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...
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7038070 |
Preparation of preparing substituted indanones
A process for the preparation of indanones of the formula II from indanones of the formula I or of indanones of the formula IIa from indanones of the formula Ia
comprises reacting an indanone...
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7034169 |
Volatile metal β-ketoiminate complexes
Metal complexes, containing copper, silver, gold, cobalt, ruthenium, rhodium, platinum, palladium, nickel, osmium, and/or indium, and methods for making and using same are described herein. In...
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7026494 |
Polymerization catalysts for producing high melt index polymers without the use of hydrogen
Various catalyst compositions including the contact product of at least one ansa-metallocene compound, at least one organoaluminum compound, and at least one activator-support are disclosed....
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7019158 |
Chiral organometallic compounds for use in asymmetric synthesis
Chiral organometallic compounds are provided which comprise certain non-symmetrically substituted cyclopentadiene complexed to a transition metal. The cyclopentadiene has a second coordinating...
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7019145 |
Method for preparing metallic carbene-based catalysts for hydrosilylation of unsaturated compounds and resulting catalysts
The invention concerns an improved method for preparing catalysts for hydrosilylation reactions of compounds with ethylene or acetylene unsaturation (for example olefins or acetylene derivatives),...
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7002031 |
Preparation of silicon-bridged metallocene compounds
A process for obtaining silicon-bridged metallocene compounds comprising the following steps:
a) reacting, at a temperature of between −10° C. and 70° C., the starting ligand with about...
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6995279 |
Metallocene compounds, processes for the production of olefin polymers using catalysts containing the compounds, and olefin polymers produced by the processes
Metallocene compounds represented by the following general formula (1):
Y q KLMX 2 (1)
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6992204 |
Method for the selective production of racemic metallocene complexes
The invention relates to a method for producing racemic metallocene complexes by reacting bridged or non-bridged transition metal complexes with cyclopentadienyl derivatives of alkaline or alkaline...
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6992200 |
Copper complexes and process for formation of copper-containing thin films by using the same
Copper-containing thin films can be industrially advantageously formed by chemical vapor deposition using as the copper source a divalent copper complex bearing β-diketonato ligands having silyl...
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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)(ZR 1 m ) n (A) r ML′ y (II) wherein Cp is a cyclopentadienyl radical;...
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6984743 |
Method for producing metallocenes
The present invention relates to a process for preparing a metallocene, which comprises reacting a ligand starting compound with an adduct of the formula (I),
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6958408 |
Ligands with at least a fluorosilcone substituent useful for preparing metal-locenes
The invention concerns ligands with at least a fluorosilicone substituent of general formulae (I) and (II); a method for preparing them and their use for producing catalysts useful for olefin...
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6943271 |
Process for producing fluorine-containing, polymerizable styrene monomer and intermediates used in same
A fluorine-containing styrene monomer of the formula (2) is produced by a first, second or third process. The first process includes (a) reacting a compound of the formula (1) with a compound of...
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6919467 |
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...
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6919412 |
Monocyclopentadienyl complexes of chromium, molybdenum or tungsten with a donor bridge
Substituted monocyclopentadienyl, monoindenyl, monofluorenyl or heterocyclopentadienyl complexes of chromium, molybdenum or tungsten, wherein at least one of the substituents of the...
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6909008 |
Cocatalyst compositions
An activator for olefin polymerization catalysts is disclosed. One aspect of the activator is that it comprises a group-13 central atom connected to at least one fluorinated aryl ring that is...
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6903229 |
Metallocene compositions
This invention relates to metallocene compositions and their use in the preparation of catalyst systems for olefin polymerization, particularly propylene polymerization. The metallocene...
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