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8163867 |
Process for producing polycarbonates and a coordination complex used therefor
The complex of the present invention containing an onium salt and a central Lewis acidic metal has a high catalytic activity at a high temperature for the copolymerization of an epoxide and carbon...
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8158812 |
Diol-derived organofunctional silane and compositions containing same
Described are diol-derived organofunctional silanes in which the silanes contain cyclic and bridged alkoxy groups derived from hydrocarbon-based diols and methods for the preparation of the...
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8143183 |
Nano-linked metallocene catalyst compositions and their polymer products
The present invention provides polymerization catalyst compositions employing novel dinuclear metallocene compounds. Methods for making these new dinuclear metallocene compounds and for using such...
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8124711 |
Ru complexes, production and use thereof
Ruthenium compounds which have, in their ligand sphere, at least one η6-bonded arene ligand and a silyl ligand; ruthenium complexes which have, in their ligand sphere, at least one η6-bonded a...
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8071700 |
Borohydride metallocene complex of a lanthanide, catalytic system including said complex, polymerization method using same and ethylene/butadiene copolymer obtained using said method
A borohydride metallocene complex of a lanthanide, its process of preparation, a catalytic system incorporating a borohydride metallocene complex and a process for the copolymerization of olefins...
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8071800 |
Borohydride metallocene complex of a lanthanide, catalytic system including said complex, polymerization method using same and ethylene/butadiene copolymer obtained using said method
A borohydride metallocene complex of a lanthanide, its process of preparation, a catalytic system incorporating it, a process for the copolymerization of olefins employing this catalytic system and...
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8034532 |
High contact angle topcoat material and use thereof in lithography process
A topcoat material for application on top of a photoresist material is disclosed. The topcoat material comprises an acid-inert compound. The topcoat material also comprises a polymer or an oligomer...
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7960576 |
Diol-derived organofunctional silane and compositions containing same
Described are diol-derived organofunctional silanes in which the silanes contain cyclic and bridged alkoxy groups derived from hydrocarbon-based diols and methods for the preparation of the...
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7951711 |
Metal precursors for semiconductor applications
Methods and compositions for depositing metal films are disclosed herein. In general, the disclosed methods utilize precursor compounds comprising gold, silver, or copper. More specifically, the...
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7951970 |
Process for recycling cyclopentadienyl derivatives and preparing metallocenes from recycled, substituted cyclopentadienyl derivatives
The present invention relates to a process for recycling cyclopentadienyl derivatives of the formulae (I) and (I′), a process for preparing metallocenes of the formula (III) from cyclopentadienyl d...
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7910760 |
Semi-rigid linked diamines, precursors therefor, and transition metal diamido complexes as catalysts for olefin polymerization processes
The invention relates to a process for producing a complex for use in olefin polymerization and oligomerization of the general formula (III): wherein Mt is a group 3 to 12 element in a +2 to +6...
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7880025 |
Ruthenium silyl-arene complex , and method for production thereof
The present invention is to provide a ruthenium complex having a novel arene moiety, which has improved solubility in various solvents, and a method for production thereof. The present invention...
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7851644 |
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 the catalytic system are disclosed; the...
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7767774 |
Silyl-diamine initiators for anionic polymerization of 1,3-butadiene and styrene, and rubber compositions
This invention relates to a novel polymerization initiator capable of introducing an active amino proton into a polymerization starting terminal without losing polymerization activity, and a novel...
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7759508 |
Volatile copper(1) complexes and processes for deposition of copper films by atomic layer deposition
Provided are novel 1,3-diimine copper complexes, and processes for using 1,3-diimine copper complexes in the deposition of copper on substrates, or in or on porous solids, by atomic layer deposition.
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7754101 |
Substituted alkylmetal compositions and methods of preparing the same
Substituted alkylmetal solutions and a method for making the same wherein the solutions include (a) a substituted alkylmetal compound of the formula of M-CH2—W(Ra) (Rb) (Rc) at a concentration of g...
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7671223 |
Process for the racemoselective preparation of ansa-metallocenes
The present invention relates to a process for the racemoselective preparation of ansa-metallocene complexes of the formula (I) which comprises reacting a ligand starting compound of the formula...
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7635783 |
Meso-selective synthesis of ansa-metallocenes
The present invention relates to a process for the meso-selective preparation of ansa-metallocene complexes of the formula (I), which comprises reacting a ligand starting compound of the formula...
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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: wherein...
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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 R1 is independently selected from the group consisting of hydrogen,...
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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)yM(H)z-y, a process for producing the organometallic precursor compounds, and a method for d...
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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 R3xTLw wherein: L is chlorine, iodine or bromine; R3...
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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 (CpR5)nMXk where Cp (each occurrence) is a cyclopentadienyl group; each of the five R substituents on the or each cyclopentadienyl group is...
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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 (CpRn)g (CpRn) M Q3-g (I) or according to formula (II) R″(CpRn)MeXQ (II) whe...
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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 hydrogen,...
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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(η3-C3R′5)(ether)n (I) wherein Cp is a cyclopentadienyl, substituted or unsubstituted, Flu is a fluo...
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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; R1 is a linear C1-C20-alkyl radical; R2 is a...
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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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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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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, R1, R2, R3 and R4...
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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)(ZR1m)n(A)rML′y (II) wherein Cp is a cyclopentadienyl radical; (ZR1m)n is a...
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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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