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| Number | Title | Issue Date |
| 7795166 | Functional group-selective hydrogenation catalyst and functional group-selective hydrogenation method A functional group-selective hydrogenation catalyst is provided, which is capable of selectively hydrogenating an aliphatic carbon-carbon double bond, aliphatic carbon-carbon triple bond, aromatic formyl group or aromatic nitro group contained in an organic compound... | 09/14/2010 |
| 7371802 | Components and catalysts for the polymerization of olefins The present invention relates to a solid catalyst component for the polymerization of olefins CH2═CHR in which R is hydrogen or a hydrocarbon radical with 1-12 carbon atoms, comprising Mg, Ti, halogen and an electron donor selected from thiophene dicarb... | 05/13/2008 |
| 7285607 | Polymerisation of olefinic compounds This invention relates to a process for producing a polymeric product by the polymerisation of at least one olefinic compound in the form of an olefin or a compound including an olefinic moiety by contacting the at least one olefinic compound with a polymerisation c... | 10/23/2007 |
| 7220805 | Process for producing contact product; catalyst component for addition polymerization; process for producing catalyst for addition polymerization; and process for producing addition polymer There are provided (1) a process for producing a contact product, which comprises the step of contacting at least a phthalocyanine complex, a porphyrin complex, or their combination with a surfactant; (2) a catalyst component for addition polymerization, which compr... | 05/22/2007 |
| 7160833 | Spray-dried polymerization catalyst and polymerization process employing same A spray-dried composition comprising the reaction product of a magnesium halide, a solvent, an electron donor compound, and a transition metal compound and an inert filler comprising substantially spherical particles having an average particle size ranging from abou... | 01/09/2007 |
| 7148302 | Catalyst for polymerization of norbornene This invention is based upon the discovery that a catalyst system which is comprised of (a) palladium or a palladium compound and (b) a fluorinated alcohol is effective for polymerizing norbornene-functional monomers into polynorbornene-functional polymers. It has b... | 12/12/2006 |
| 7078469 | Halogenated organic particles for catalyst supports Polymeric supports, which have been treated with a halosulfonic acid, increase the activity of single-site catalysts used with aluminoxane co-catalysts, resulting in improved ethylene polymerization. The present invention seeks to provide polymeric catalyst supports... | 07/18/2006 |
| 7060767 | Supported metallocene catalytic component and method for obtaining same The invention discloses a solid catalytic component comprising a metallocene, at least one first ligand of which comprises a cyclopentadienyl group chemically bonded via a methyl group to a support composed of a porous inorganic compound. It also discloses a process... | 06/13/2006 |
| 6969747 | Olefin polymerization titanium catalyst An olefin polymerization titanium catalyst. It comprises a titanium compound and an organoaluminium compound cocatalyst supported on a soluble polysulfone comprising free reactive sulfone groups. The molar ratio of titanium of aluminum is 1–10:200 and the weight r... | 11/29/2005 |
| 6916761 | Polymer-supported Lewis acid catalyst In order to provide a novel Lewis acid catalyst, which shows high reaction activity in aqueous medium, is easily recovered, and is excellent in reusability, a Lewis acid group expressed by the general formula (I): MXn (I) (wherein... | 07/12/2005 |
| 6887817 | Olefin polymerization catalyst and process for preparing polyolefins using said catalyst An olefin polymerization catalyst is described which includes: (A) a solid catalyst component being prepared by copulverizing a magnesium compound, an aluminum compound, an electron donor and a titanium compound, and (B) an organoaluminum compound. The present inven... | 05/03/2005 |
| 6878659 | Solid catalyst component for olefin polymerization and catalyst A solid catalyst component for olefin polymerization characterized by being formed from (a) a magnesium compound, (b) titanium tetrachloride, (c) a phthalic diester and a derivative thereof, and either (d1) a hydroxylated hydrocarbon compound (phenol, etc... | 04/12/2005 |
| 6841502 | Bridged bi-aromatic ligands, catalysts, processes for polymerizing and polymers therefrom New ligands and compositions with bridged bis-aromatic ligands are disclosed that catalyze the polymerization of monomers into polymers. These catalysts with metal centers have high performance characteristics, including higher comonomer incorporation into ethylene/... | 01/11/2005 |
| 6800580 | Method for producing an improved catalyst for homo-and co-polymerization of olefin The present invention relates to a solid complex titanium catalyst for homo-polymerization and co-polymerization of α-olefin, obtained by (i) producing a solution of a magnesium compound by dissolving a magnesium compound and a compound of IIIA Group of the Periodi... | 10/05/2004 |
| 6730626 | Transition metal compounds, polymerization catalysts for olefins, olefin polymers and process for their production Useful as a catalyst component for polymerizing olefin is the transition metal compound of the present invention represented by Formula (I): wherein M represents a transition metal compound of the fourth group in the per... | 05/04/2004 |
| 6683018 | Method for producing a supported catalyst system A process for the preparation of a supported catalyst system, an inorganic carrier material being reacted with a metal compound of the formula in the presence of an inert solvent in a first step and, in a subsequent step, the suspension thus obtained being rea... | 01/27/2004 |
| 6596891 | Activating composition of metallocene complexes in the catalysis of (co)polymerization processes of olefins An organometallic composition of a reaction product of a fluorinated organic compound of formula (I): ##STR1## wherein R1 to R8 are as described in the specification, m is 0 or 1; and an organometallic compound of formula (II): M'R | 07/22/2003 |
| 6444603 | CATALYST COMPONENT FOR ETHYLENICALLY UNSATURATED MONOMER POLYMERIZATION, CATALYST FOR ETHYLENICALLY UNSATURATED MONOMER POLYMERIZATION, AND PROCESS FOR ETHYLENICALLY UNSATURATED MONOMER POLYMERIZATION USING SAID CATALYST The invention relates to a catalyst component which can provide, in combination with a transition metal compound, a catalyst for ethylenically unsaturated monomer polymerization, a catalyst comprising the catalyst component and a transition metal compound... | 09/03/2002 |
| 6444604 | Supported catalysts for the polymerization of olefins Supported catalysts for the polymerization of olefins comprise the following components: (A) a porous organic support functionalised with groups having active hydrogen atoms; (B) an organo-metallic compound of aluminium containing heteroatoms selected fro... | 09/03/2002 |
| 6436864 | Unsaturated nitrogenous compounds as electron donors for use with ziegler-natta catalysts Unsaturated nitrogenous compounds are used as electron donors in conjunction with catalytic polymerization of addition polymerizable monomers such as olefins, using supported Ziegler-Natta catalysts. The electron donors may be used in the preparation of c... | 08/20/2002 |
| 6423660 | Supported catalysts for the polymerization of olefins Supported catalysts for the polymerization of olefins comprise the following components: (A) a porous organic support functionalised with groups having active hydrogen atoms; (B) an organo-metallic compound of aluminium containing heteroatoms selected fro... | 07/23/2002 |
| 6388029 | Process for obtaining polyolefins Catalytic systems particularly suitable for the polymerization of -olefins containing from two to 20 carbon atoms, as well as for the copolymerization of ethylene with -olefins containing from three to 20 carbon atoms, dienes, and cycloalken... | 05/14/2002 |
| 6384159 | Production of polyethylene with a titanium amide catalyst The present invention relates to a process to produce polyethylene through homopolymerization or copolymerization of ethylene with alpha-olefins in the presence of a titanium amide catalyst supported by an organic polymer material, for the production of m... | 05/07/2002 |
| 6303720 | Olefin polymerization catalysts containing group 8-10 transition metals, processes employing such catalysts and polymers obtained therefrom Methods for preparing olefin polymers, and catalysts for preparing olefin polymers are disclosed. The polymers can be prepared by contacting the corresponding monomers with a Group 8-10 transition metal catalyst. The polymers are suitable for processing i... | 10/16/2001 |
| 6300271 | Compositions that can produce polymers This invention provides a compositions that are useful for polymerizing at least one monomer into at least one polymer.... | 10/09/2001 |
| 6284701 | Metallocene catalysts for olefin polymerization and method of polymerizing olefins using the metallocene catalysts The new metallocene catalysts according to the present invention are prepared by reacting a metallocene compound with a compound having at least two functional groups. The metallocene compound is a transition metal compound, which is coordinated with a ma... | 09/04/2001 |
| 6274529 | Catalytic system for the (co)polymerization of alpha-olefins A catalytic system with an increased activity for the (co)polymerization of alpha-olefins comprises a catalyst of the metallocene type, which is capable of polymerizing olefins without aluminoxane, and a weak coordinating compound, which, when used in a p... | 08/14/2001 |
| 6265340 | Catalyst composition and method for producing diaryl carbonates Hydroxyaromatic compounds such as phenol are carbonylated with oxygen and carbon monoxide in the presence of a catalyst system comprising a Group VIIIB metal, preferably palladium; an alkali metal or alkaline earth metal halide, preferably sodium bromide;... | 07/24/2001 |
| 6258744 | Catalyst system based on fulvene cyclopentadienyl metal complexes The present invention relates to a catalyst system based on fulvene cyclopentadienyl metal complexes, to a method of producing said catalyst system and to the use thereof for the polymerization and copolymerization of olefins and/or dienes.... | 07/10/2001 |
| 6235918 | Supported organometallic catalysts for hydrogenation and Olefin Polymerization Novel heterogeneous catalysts for the which hydrogenation of olefins and arenes with high conversion rates under ambient conditions and the polymerization of olefins have been developed. The catalysts are synthesized from Ziegler-type precatalysts by supp... | 05/22/2001 |
| 6184316 | Catalyst and process for the syndiotactic polymerization of vinylaromatic compounds A catalyst for the polymerization of vinylaromatic monomers, and particularly styrene, with a high yield and a high syndiotacticity index, comprises the product consisting of the following two components in contact with each other: A) an η5 -c... | 02/06/2001 |
| 6177526 | Supported catalyst system, process for its preparation and its use for the polymerization of olefins The present invention relates to a supported catalyst system which comprises at least one metallocene component and at least one cocatalyst component and at least one modified inorganic oxide of silicon, aluminum or mixtures thereof, wherein the modified ... | 01/23/2001 |
| 6165929 | Compositions that can produce polymers A process is provided to produce a composition of matter. The process comprises contacting at least one organometal compound, at least one solid mixed oxide compound, and at least one organoaluminum compound to produce the composition.... | 12/26/2000 |
| 6143685 | Process for obtaining a catalytic system for the polymerization of . .alpha-olefins in suspension in gas phase at low and high temperature or in a mass at high pressure and high or low temperatures Catalytic systems particularly suitable for the polymerization of -olefins containing from two to 20 carbon atoms, as well as for the copolymerization of ethylene with -olefins containing from three to 20 carbon atoms, dienes, and cycloalken... | 11/07/2000 |
| 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 the inorganic support, wherein the silicon-containing met... | 10/17/2000 |
| 6127302 | Unbridged monocyclopentadienyl metal complex catalyst and a process for polyolefin production There is provided a catalyst containing a transition metal precursor having the formula (C5 R15)MQ3, a bulky non-phenolic compound, an aluminoxane, and optionally a Br$c;nsted acid and/or a support or spray d... | 10/03/2000 |
| 6107230 | Compositions that can produce polymers This invention provides compositions for polymerizing at least one monomer to produce a polymer. The compositions are produced by a process comprising contacting at least one organometal compound, at least one organoaluminum compound, and at least one tre... | 08/22/2000 |
| 6103658 | Olefin polymerization catalysts containing group 8-10 transition metals, processes employing such catalysts and polymers obtained therefrom Methods for preparing olefin polymers, and catalysts for preparing olefin polymers are disclosed. The polymers can be prepared by contacting the corresponding monomers with a Group 8-10 transition metal catalyst. The polymers are suitable for processing i... | 08/15/2000 |
| 6080834 | Titanium-containing catalyst composition and processes therefor and therewith A catalyst composition is disclosed. The composition comprises a titanium compound, a complexing agent, a solvent, and optionally a cocatalyst. The cocatalyst can be a cobalt/aluminum catalyst, an antimony compound, or combinations thereof. Also disclosed... | 06/27/2000 |
| 6074977 | Olefin addition polymerization catalyst composition Catalyst compositions that are highly tolerant of catalyst poisons comprising a cationic or zwitterionic Group 4 metal complex of the constrained geometry type and an organoaluminum hydrocarbyloxide compound according to the formula R12 | 06/13/2000 |
