Matches 101 - 150 out of 353 < 1 2 3 4 5 6 7 8 >
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6251969 Thermocurable, one-component, addition-crosslinking silicone compositions  
Organopolysiloxane particles containing hydrosilylation catalysts (H) and organopolysiloxane (O) and having a particle size of 0.01-10 μm have, at least in the outermost shell, no glass-transition...
6248686 Organic/inorganic complex porous materials  
Organic/inorganic complex porous materials are disclosed having a main skeletal chain containing metal atoms, oxygen atoms, and organic groups. Preferably, the metal atoms, oxygen atoms and organic...
6232261 Catalyst activators  
A catalyst system suitable for the polymerization of olefins comprising an olefin polymerization catalyst and an activator comprising the reaction product of (i) an aluminoxane or (ii) the reaction...
6228480 Photocatalyst-carrying structure and photocatalyst coating material  
The present invention provides a photocatalyst-carrying structure which has a structure, wherein an adhesive layer is provided in between a photocatalyst layer and a substrate, the adhesive layer...
6229037 Polyorganosiloxane catalyst  
The invention provides a polyorganosiloxane catalyst with both of a sulfonic acid group-containing hydrocarbon group and a mercapto group-containing hydrocarbon group, wherein the total amount of...
6228795 Polymeric supported catalysts  
This invention relates to a catalyst system comprising a substituted, bridged bisindenyl metallocene supported on a polymeric support wherein the metallocene is activated for polymerization by an...
6218487 Process for polymerizing olefins  
A process for polymerizing olefins by bringing olefins into contact with a transition metal catalyst and a cocatalyst, characterized in that the cocatalyst is a compound in accordance with formula ...
6194343 Bridged "tethered" metallocenes  
The present invention provides a tethered bridged metallocene compound in which the tether typically comprises a segment of the formula --(R 2 ) d --(CH 2 CH 2 ) e (CHCH) f wherein R 2 is...
6184171 Supported bidentate and tridentate catalyst compositions and olefin polymerization using same  
A heterogeneous catalyst composition suitable for olefinic polymerization and to methods of forming polyolefinic products using said composition. The catalyst composition comprises an anionic...
6184170 Metallocene catalyst systems  
This invention relates generally to metallocene catalyst systems and to methods for their production and use. Specifically, this invention relates to a method for preparing metallocene catalyst...
6177375 High activity olefin polymerization catalysts  
A method for preparing a silica supported, α-olefin polymerization catalyst includes the steps of treating a silica support with an organosilane compound, contacting the silylated silica support...
6171995 Catalyst mixture for ring-opening metathesis polymerization  
A composition, comprising (a) a compound of formula I (R 1 R 2 R 3 P) x L y M 2 + Z 1 - Z 2 - (I), wherein R 1 , R 2 and R 3 are each independently of one another H, C 1 -C 20 ...
6169053 Silylated perfluorinated ion-exchange microcomposite catalysts  
This invention concerns a silylated porous microcomposite comprising a perfluorinated ion-exchange polymer entrapped within and highly dispersed throughout a network of inorganic oxide wherein the...
6169192 Functionalized ferrocenyldiphosphines, a process for their preparation and their use  
The invention relates to 1,2-ferrocenyldiphosphines which contain a functional group in the 1' position either directly or via a bridging group, and also a process for their preparation. The...
6159890 Ruthenium-containing catalyst system for olefin metathesis  
A ruthenium-containing metathesis catalyst system which contains a ruthenium compound (A), a phosphorus, arsenic, or antimony compound (B), and a compound (C) containing at least one...
6159888 Polymerization catalyst systems, their preparation, and use  
A prepolymerized solid catalyst is prepared by reacting a suitable support base with an organoaluminum compound and then reacting that product with an activity promoting amount of water and then...
6156692 Ruthenium-containing catalyst composition for olefin metathesis  
A ruthenium-containing metathesis catalyst system which contains a ruthenium compound (A), a phosphorus compound (B), and a compound (C) containing a carbon-to-carbon triple bond. The mole ratio of...
6143682 Bimetallocyclic transition metal catalyst systems  
This invention relates to single site catalyst systems comprising activated bimetallocyclic transition metal compounds, and the use of these catalyst systems for the polymerization of ethylenically...
6140444 Catalyst system, process, and silicone compositions  
The invention relates to a catalyst system for reacting a silanol group with an alkoxysilane containing a polymerizable ethylenically unsaturated group. The catalyst system includes an...
6136747 Mixed catalyst composition for the production of olefin polymers  
A mixed catalyst composition comprising a) a solid Ziegler-Natta catalyst; b) a liquid single site catalyst; and c) at least one activating cocatalyst is provided. Polymers having a broad or...
6136996 Catalysts for polycondensation and redistribution of organosiloxane polymers  
A mixture of a short chain linear phosphazene having the formula: X 3 -p (HO) p P(NPX2) m NP(O)X 2 , where X is a halogen selected from the group consisting of F, Cl, Br, and I, and m is an...
6133187 Hetergeneous metallocene catalysts and use thereof in olefin polymerization process  
A catalyst comprising a cocatalyst and a catalyst component obtained by contacting a silicon-containing metallocene compound with an inorganic support to chemically bond the metallocene compound to...
6127306 Organofunctionalized aerogels  
The invention relates to aerogels containing functional residues of the formula (I)--Y--Z, wherein Y is a straight-chained or branched alkylene group with 1 to 22 carbon atoms; Z is halogen,...
6127304 Magnesium dischloride-alcohol adducts and catalyst components obtained therefrom  
The present invention relates to MgCl 2 .mROH.nH 2 O adducts, where R is a C 1 -C 10 alkyl, 2≤m≤4.2, 0≤n≤0.7, characterized by an X-ray diffraction spectrum in which, in the range of 2θ...
6124487 Olefin polymerization catalyst having a bridged phosphole-heteroatom ligand  
A new family of metallacycles, which are preferably zirconacycles, is characterized by having a unique halogenated substituent. The metallacycles are useful for the preparation of main group...
6121183 Modified polysiloxane catalysts and a method of using the same  
Catalysts for the polymerization of olefins contain units of the formula: wherein ##STR1## each R is independently selected from a C 1 to C 10 aliphatic or cycloaliphatic group or a C 6 to C 18 ...
6103867 Catalyst systems for producing copolymers of carbon monoxide and olefinically unsaturated compounds  
The catalyst systems comprise as active constituents a) a metal complex of the formula (I) ##STR1## b) one or more Lewis or protic acids or a mixture of Lewis and protic acids.
6096912 Soluble catalyst systems for the preparation of polyalk-1-enes having high molecular weights  
Abstract of the Disclosure: Catalyst systems for the polymerization of C 2 -C 10 -alk-1-enes contain, as active components, a) a metallocene complex of the general formula I ##STR1## where M...
6087293 Supported catalyst containing tethered cation forming activator  
6077806 Catalyst system containing reaction product of liquid silicone and polyamine  
A catalysis system containing an olefin polymerization catalyst having at least one Group 3 to Group 10 transition metal or one of the Lanthanide series of the Periodic Table and an organic support...
6069237 Open-pentadienyl metallocenen ligands, polymerization catalysts/catalyst precursors and polymers therefrom  
New metallocene ligand systems and catalysts/catalyst precursors are described where the ligand system contains at least one open-pentadienyl ligand characterized by an acyclic six π electron...
6057258 Solid catalytic component for the polymerization of olefins  
The invention relates to a process for the preparation of a solid catalytic component of metallocene type for the polymerization of olefins comprising a stage of reaction between a support and a...
6057407 High melt flow propylene polymer produced by gas-phase polymerization  
A process to produce high melt flow propylene polymer comprises polymerizing propylene in the presence of a titanium-containing, magnesium-containing, high activity catalyst and an aluminum alkyl...
6051680 Silylated double metal cyanide complex catalysts  
The amount of high molecular weight impurity present in a polyether polyol produced by alkoxylation of an active hydrogen-containing initiator using a double metal cyanide complex catalyst may be...
6051673 Platinum complex catalyst composition, process for the preparation thereof, and microparticulate thermoplastic resin catalyst composition  
To provide a high-purity platinum complex catalyst composition that has an excellent storage stability, is easy to handle, and has a high catalytic activity. Also, to provide a process for the...
6034021 Metal complexes containing bridged, non-aromatic, anionic, dienyl groups and addition polymerization catalysts therefrom  
Catalytic derivatives of novel Group 4 metal complexes wherein the metal is in the +2, +3, or +4 formal oxidation state containing two ligand groups bound by π-electrons, at least one of which is...
6030919 Platinum hydrosilylation catalyst and method for making  
A method is provided for making a platinum hydrosilylation catalyst by equilibrating a mixture of an alkenylpolysiloxane and a cycloalkylpolysiloxane in the presence of a haloplatinic acid and...
6010974 Carbon and/or silicon bridged binuclear metallocene catalyst for styrene polymerization  
An alkylene and/or silylene bridged binuclear metallocene catalyst for styrene polymerization is represented by the following formula (I): ##STR1## where M 1 and M 2 are the same or different...
5994570 Platinum complex catalyst  
A specific amount of a low molecular weight vinyl siloxane is blended with a platinum-vinyl siloxane complex to provide a platinum complex catalyst, which is prevented from deterioration with time...
5929289 Stabilization of phosphite ligands in hydroformylation process  
The present invention provides a hydroformylation process comprising: (1) forming a reaction mixture containing: (a) an olefinic compound, (b) hydrogen, (c) carbon monoxide, (d) a phosphite in...
5925723 Catalyst/cross-linking agent compositions, a method for their preparation and their use  
A catalyst/cross-linking agent composition, containing at least one a) vinyltrialkoxysilane as cross-linking agent, b) dialkyltin oxide as catalyst, c) optional organic acid for the...
5914375 Catalyst composition for preparing high-syndiotactivity polystyrene from styrene or other aryl ethylene monomers and processes using the same  
An catalyst composition for preparing high-syndiotacticity polystyrene polymers which comprises: (a) a titanium complex represented by the following formula of TiR' 1 R' 2 R' 3 R' 4 or TiR' 1 ...
5908951 Hydrosilylation catalyst and hydrosilylation method  
A catalyst enables hydrosilylation of aliphatically unsaturated carbon-carbon bonds by silicon-bonded hydrogen to be conducted rapidly in water. The catalyst provides a rapid method of carrying out...
5891817 Electron donors for improved olefin polymerization  
The present invention provides a catalyst system that exhibits unprecedented catalyst efficiencies and control of desired properties in the polymer product. The catalyst system includes a new...
5869723 Ionic compound and olefin polymerization catalyst containing the same  
Ionic compounds represented by general formula (I), method of their production, olefin polymerization catalyst components, and olefin polymerization catalysts containing the components are...
5861352 Supported metallocene catalyst for olefins (co)polymerization  
A solid catalyst component for the polymerization and copolymerization of ethylene and alpha- olefins, containing a metallocene supported on an inorganic solid carrier constituted by a porous...
5840993 Water-soluble cobalt catalysts, process for their preparation and their use as hydro-formylation catalysts in a two-phase system with polyethylene glycol as the polar phase  
The invention relates to cobalt carbonyl catalysts of the formula (I) ##STR1## where R is --CH(CH 2 OCH 2 CH 3 ) 2 or --C 2 H 4 (OCH 2 CH 2 ) n OY, with n=1 to 12 and Y=H or CH 3 , and also...
5831120 Process for the production of acetic acid  
In the process for the production of acetic acid by carbonylation of methanol and/or a reactive derivative thereof the water concentration in the liquid reaction composition is maintained at a...
5824618 Catalyst components for polymerization of olefins  
A catalyst component is disclosed for use in the homo- or copolymerization of olefinic hydrocarbons. The catalyst component is comprised of a first compound of the formula M 1 (OR 1 ) p R 2 q X...
5824622 Porous microcomposite of perfluorinated ion-exchange polymer and metal oxide, a network of silica, or a network of metal oxide and silica derived via a sol-gel process  
Porous microcomposites comprising a perfluorinated ion-exchange polymer (PFIEP) containing pendant sulfonic acid and/or carboxylic acid groups entrapped within and highly dispersed throughout a...
Matches 101 - 150 out of 353 < 1 2 3 4 5 6 7 8 >