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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...
8088878 Hydrosilylation reactions activated through radiation  
η-cyclopentadienyl-tri(σ-hydrocarbyl) platinum compounds in which the cyclopentadienyl ring is linked to a hydrolysable silyl group by an alkylene group are effective light-activated h...
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...
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...
7982064 Method for preparing ortho-substituted aminoferrocenes  
The present disclosure relates to a method for preparing an ortho-substituted aminoferrocene comprising reacting an aminoferrocene with a Lewis acid and a lithiating reagent in the presence of an...
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...
7851569 Rare earth metal complex, polymerization catalyst, and process for producing polymer  
A rare earth metal complex represented by the formula (1): in which A represents a Group 14 element of the periodic table, Cp represents a group having a substituted or unsubstituted...
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...
7709598 Fluorinated alkyl fluorophoshoric acid salts of onium and transition metal complex  
To obtain a polymerization initiator (acid generating agent) having excellent power for initiation of cationic polymerization without containing arsenic or antimony. Provided is a specific onium...
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...
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...
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...
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...
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...
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...
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,...
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.
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...
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...
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...
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...
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...
RE40121 Transition metal compound  
The present invention relates to zwitterionic neutral transition metal compounds. The compounds are suitable as catalyst components for the polymerization of olefins.
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...
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...
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...
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,...
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...
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...
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...
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...
7205422 Volatile metal β-ketoiminate and metal β-diiminate complexes  
Metal ketoiminate or diiminate complexes, containing copper, silver, gold, cobalt, ruthenium, rhodium, platinum, palladium, nickel, osmium, or indium, and methods for making and using same are...
RE39561 Metallocenes containing ligands of 2-substituted indenyl derivatives, process for their preparation, and their use as catalysts  
The novel metallocenes of the formula I in which, preferably, M1 is Zr or Hf, R1 and R2 are alkyl or halogen, R3 and R4 are hydrogen, R5 and R6 are alkyl or haloalkyl,...
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...
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...
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...
7122498 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 R12 is...
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...
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...
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,...
7081543 Bridged biscyclopentadienyl ligands and method of preparation  
The present invention relates to ligands and the synthesis of those ligands for use in metallocene complexes. More particularly, the present invention relates to the synthesis of diarylsilyl...
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...
RE39156 Process for the preparation of polyolefins  
A process for the preparation of an olefin polymer by polymerization or copolymerization of an olefin of the formula Ra—CH═CH—Rb, in which Ra and Rb are identical or different and are a hydro...
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...
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 of...
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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