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| Number | Title | Issue Date |
| 8168556 | Racemoselective synthesis of ansa-metallocene compounds, ansa-metallocene compounds, catalysts comprising them, process for producing an olefin polymer by use of the catalysts, and olefin homo- and copolymers A metallocene compound with the 4- and 7-positions on the indenyl moiety possessing large aromatic substituents is prepared in accordance with a method which produces substantially 100 percent racemic isomer. Advantageously, polymerization catalysts including the me... | 05/01/2012 |
| 8153544 | Method for preparing non-metallocene catalysts A method of preparing supported catalysts useful for olefin polymerization is described. The catalysts comprise a Group 4 metal complex that incorporates a tridentate dianionic ligand. An activator mixture is first made from a boron compound having Lewis acidity and... | 04/10/2012 |
| 8148287 | Catalyst immobilization on siliceous mesocellular foam via click chemistry The present invention relates to a method for preparing a heterogenised catalyst, comprising grafting a catalyst or catalyst precursor, via click chemistry, to a siliceous mesocellular foam (MCF). The invention also relates to a heterogenised catalyst comprising a c... | 04/03/2012 |
| 7902110 | Homogeneous asymmetric hydrogenation catalyst Provide that a useful catalyst for homogeneous hydrogenation, particularly a catalyst for homogeneous asymmetric hydrogenation for hydrogenation, particularly asymmetric hydrogenation, which is obtainable with comparative ease and is excellent in economically and wo... | 03/08/2011 |
| 7871954 | Synthesis of carbon supported platinum-tungsten electrocatalysts The present teachings are directed toward methods of producing electrocatalyst compositions of platinum and tungsten through the thermal decomposition of carbonyl-containing complexes of the two metals. ... | 01/18/2011 |
| 7833926 | Arylphenoxy catalyst system for producing ethylene homopolymer or copolymers of ethylene and α-olefins The present invention relates to an arylphenoxy catalyst system producing an ethylene homopolymer or copolymers of ethylene and α-olefins, and a method of producing an ethylene homopolymer or copolymers of ethylene and α-olefins having a high molecular weight unde... | 11/16/2010 |
| 7829495 | Olefin polymerization process with alkyl-substituted metallocenes The invention comprises an olefin polymerization process comprising contacting ethylene alone or with one or more olefinically unsaturated comonomers with a Group 3-6 metallocene catalyst compound comprising one π-bonded ring having a C3 or greater hydro... | 11/09/2010 |
| 7737070 | Process for the preparation of a metal-organic compound comprising at least one imine ligand A process for the preparation of a metal-organic compound, comprising at least one imine ligand, characterized in that an imine ligand according to formula (1) or the HA adduct thereof, wherein HA represents an acid, of which H represents its proton and A its conjug... | 06/15/2010 |
| 7645715 | Bis-arylaryloxy catalytic system for producing ethylene homopolymers or ethylene copolymers with alpha-olefins The present invention relates to a bis-arylaryloxy catalyst system for the production of ethylene homopolymers or copolymers with α-olefins, which has high catalytic activity. More particularly, it relates to a transition metal catalyst comprising a group-IV transi... | 01/12/2010 |
| 7632773 | Methods for manufacturing supported catalyst from a porous support and a nanocatalyst solution Supported catalysts are manufactured from a pretreated porous support material and a nanocatalyst solution of catalyst nanoparticles. The porous support material is pre-treated with a gaseous solvent (e.g., steam or alcohol) to protect the support material from crac... | 12/15/2009 |
| 7589042 | Arylphenoxy catalyst system for producing ethylene homopolymer or copolymers of ethylene and α-olefins Disclosed is an arylphenoxy catalyst system for producing an ethylene homopolymer or copolymers of ethylene and α-olefins, and a method of producing an ethylene homopolymer or copolymers of ethylene and α-olefins having a high molecular weight under a high tempera... | 09/15/2009 |
| 7547654 | Catalytic system for obtaining conjugated diene/monoolefin copolymers and these copolymers A catalytic system usable for the copolymerization of at least one conjugated diene and at least one monoolefin, a process for preparing this catalytic system, a process for preparing a copolymer of a conjugated diene and at least one monoolefin using said catalytic... | 06/16/2009 |
| 7446072 | Preparation of supported catalyst systems containing reduced amounts of aluminoxanes The present invention relates to a process for preparing a catalyst solid for olefin polymerization, comprising a finely divided support, an aluminoxane and a metallocene compound, which comprises a) firstly combining the finely di... | 11/04/2008 |
| 7446073 | Catalyst compounds, catalyst systems thereof and their use in a polymerization process The present invention relates to a cyclic germanium bridged bulky ligand metallocene-type catalyst compound, a catalyst system thereof, and to its use in a process for polymerizing olefin(s) to produce enhanced processability polymers. ... | 11/04/2008 |
| 7442750 | Supported olefin polymerization catalyst Supported catalyst systems are provided comprising (a) a transition metal compound, (b) an activator comprising (iii) an aluminoxane or (iv) a Group lilA metal or metalloid compound, and (c) a support material comprising an inorganic metal oxide, inorganic metal hal... | 10/28/2008 |
| 7442667 | Preparation of supported cocatalysts The present invention relates to a process for preparing a supported cocatalyst for olefin polymerization, which comprises reacting A) a support bearing functional groups, B) triethylaluminum and C) a compound of the formula (I), (R | 10/28/2008 |
| 7442666 | Catalytic system for the dehydrogenative condensation of polyorganosiloxanes with alcohols and a process for preparing organically modified polyorganosiloxanes The invention relates to a catalytic system for the dehydrogenative condensation of polyorganosiloxanes with alcohols, consisting of at least one boron compound and at least one synergistically active compound, and to a process for converting polyorganosiloxanes, in... | 10/28/2008 |
| 7439379 | Transition metal complex, catalyst for olefin polymerization, and process for producing olefin polymer with the same The present invention relates to a transition metal complex represented by the formula (I): wherein M represents a Group 4 transition metal; —Y— represents (a): —C(R... | 10/21/2008 |
| 7435701 | Catalytic composition and its preparation and use for preparing polymers from ethylenically unsaturated monomers A catalytic composition, including a neutral metal-pair complex, is disclosed, along with a method for its preparation. A method for the polymerization of ethylenically unsaturated monomers using the catalytic composition, and the addition polymers produced thereby ... | 10/14/2008 |
| 7429684 | Process for oligomerization of ethylene to linear α-olefins A process for preparing α-olefins from ethylene wherein the α-olefins are substantially free of olefins having greater than 12 carbon atoms comprises contacting ethylene under oligomerization conditions with a 2,6-bis(phenylimino) pyridyl metal halide catalyst in ... | 09/30/2008 |
| 7429549 | Process for improved coupling of rubbery polymers Rubbery polymers made by anionic polymerization can be coupled with tin halides or silicon halides to improve the characteristics of the rubber for use in some applications, such as fire treads. In cases where the rubbery polymer was synthesized utilizing a polar mo... | 09/30/2008 |
| 7423151 | Method for the production of highly pure tris-ortho-metalated organo-iridium compounds The present invention relates to a process for preparing highly pure tris-ortho-metallated organoiridium compounds and such pure organometallic compounds, especially compounds of the d8 metals, which may find use as coloring components in the near future,... | 09/09/2008 |
| 7420064 | Catalyst and method for the carbonylation of oxiranes Lactones are prepared by catalytic carbonylation of oxiranes using a catalyst system comprising a) at least one cobalt compound as component A and b) at least one metal compound of the formula (I) as component B, | 09/02/2008 |
| 7417006 | Catalyst system for the polymerization of olefins A salt of formula (I) [HEoR13]+[T1T2]− (I) wherein Eo is a nitrogen or phosphorous atom; R1 is hydrocarbon radical; T1 is a Lewi... | 08/26/2008 |
| 7417097 | Organometal compound catalyst This invention provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer. This invention also provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer, wherein said cata... | 08/26/2008 |
| 7414005 | Preparation of catalyst compositions having improved activity The present invention relates to a process for preparing a catalyst composition for olefin polymerization, which comprises preparing a catalyst solid in a first step by bringing A) at least one support, B) at least one organic compound having at least one functional... | 08/19/2008 |
| 7410927 | Catalysts for olefin polymerization This invention relates to the field of olefin polymerization catalyst compositions, and methods for the polymerization and copolymerization of olefins, including polymerization methods using a catalyst composition. One aspect of this invention is the formation and u... | 08/12/2008 |
| 7410926 | Polymerization process using a supported, treated catalyst system The present invention relates to a supported, treated catalyst system and its use in a process for polymerizing olefin(s). More particularly, it provides a supported, treated catalyst system produced by a process comprising the steps of: (a) forming a supported bime... | 08/12/2008 |
| 7402638 | Propylene polymer particle method of producing the same and use thereof The present invention relates to a propylene random copolymer which satisfies the following requirements [1] to [4], and to various useful molded products obtained by molding the propylene random copolymer: [1] the concentration (P... | 07/22/2008 |
| 7399814 | Living radical polymerization method A highly active and environment-friendly catalyst for use in a living radical polymerization is provided. A catalyst for use in a living radical polymerization method is provided. The catalyst comprises a central element, which is selected from germanium, tin... | 07/15/2008 |
| 7396888 | Catalyst system comprising a mixture of catalyst components for producing a polyolefin blend Provided is a catalyst system for producing a polyolefin blend, which catalyst system comprises a mixture including the following catalyst components: i) a catalyst component A capable of producing an isotactic olefin polymer, and/or a catalyst component A′ capabl... | 07/08/2008 |
| 7396796 | Treatment agent, method and device for treating hazardous substances A hazardous substance treatment agent has a retainer and a transition metal oxide. The retainer has the specificity of retaining only a specific hazardous substance, such as a virus, a bacterium or a toxin, that has become mixed in or has the possibility of becoming... | 07/08/2008 |
| 7390764 | Organometal catalyst compositions This invention provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer This invention also provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer, wherein said catal... | 06/24/2008 |
| 7390862 | Process for polymerizing 1-butene A process for polymerizing 1-butene, optionally with up to 30% by mol of ethylene, propylene or an alpha olefin of formula CH2═CHT wherein T is a C3-C10 alkyl group, in the presence of a catalyst system obtainable by contacting a m... | 06/24/2008 |
| 7388062 | Group IIIb metal complexes with “constrained geometry” fluorenyl based ligands The present invention discloses a metallocene catalyst component based on a Group IIIb metal of the periodic Table and a bridged heteroatom-fluorenyl ligand. It also discloses its method of preparation and its use in polymerisation. ... | 06/17/2008 |
| 7385015 | Trialkylaluminum treated supports This invention relates to a process to prepare a trialkylaluminum treated support comprising: 1) combining a support with first trialkylaluminum compound(s), where the alkyl groups have at least 2 carbon atoms; then 2) calcining the combination of the support and th... | 06/10/2008 |
| 7384886 | Methods of preparation of an olefin oligomerization catalyst A method of making a catalyst for use in oligomerizing an olefin comprising a chromium-containing compound, a pyrrole-containing compound, a metal alkyl, a halide-containing compound, and optionally a solvent, the method comprising contacting a composition comprisin... | 06/10/2008 |
| 7381679 | Catalyst combination, isotactic polymers and also a method for producing linear isotactic polymers and the use thereof The present invention relates to a catalyst combination for producing linear isotactic polymers containing an asymmetrical metal complex and also an activator. ... | 06/03/2008 |
| 7368411 | Supported metallocene catalysts and their use in producing stereospecific polymers Supported stereospecific catalysts and processes for the stereotactic propagation of a polymer chain derived from ethylenically unsaturated monomers which contain three or more carbon atoms or which are substituted vinyl compounds, specifically alpha olefins, partic... | 05/06/2008 |
| 7365139 | Polymerisation catalyst A complex of transition metal Ti, Fe, Co, Ni, Cr, Mn, Ta, Rh, Y, Sc, Ru, Pd, Zr, Hf, V or Nb and a mono-, bi-, tri-, or tetra-dentate ligand, wherein at least one of the donor atoms of the ligand is a nitrogen atom N with a 5-membered heterocyclic substituent joined... | 04/29/2008 |
