Compound With Silicon-hydrogen Bond Or Organic Compound With Silicon-carbon Bond Patents (Class 502/158)
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Publication number: 20080214385Abstract: The present invention relates to a catalyst composition and a method for making the catalyst composition of a polymerization catalyst and a carboxylate metal salt. The invention is also directed to the use of the catalyst composition in the polymerization of olefin(s). In particular, the polymerization catalyst system is supported on a carrier. More particularly, the polymerization catalyst comprises a bulky ligand metallocene-type catalyst system.Type: ApplicationFiled: April 4, 2008Publication date: September 4, 2008Applicant: UNIVATION TECHNOLOGIES, LLCInventors: Agapios Kyriacos Agapiou, Chi-I Kuo, David Michael Glowczwski, Steven Kent Ackerman
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Publication number: 20080207853Abstract: Compounds are provided that are useful as precatlysts in the polymerization of olefins such as ethylene and propylene. Other compounds are useful as intermediates in the production of such precatalysts.Type: ApplicationFiled: February 23, 2007Publication date: August 28, 2008Inventors: Omofolami Tesileem Ladipo, Richard Eaves, Alexey Zazybin, Sean Parkin
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Publication number: 20080200626Abstract: The present invention provides a method of producing oligomers of olefins, comprising reacting olefins with a chromium based catalyst under oligomerization conditions. The catalyst can be the product of the combination of a chromium compound and a pyridyl thioether compound. In particular embodiments, the catalyst compound can be used to trimerize or tetramerize ethylene to 1-hexene, 1-octene, or mixtures of 1-hexene and 1-octene.Type: ApplicationFiled: December 13, 2007Publication date: August 21, 2008Inventors: Lily J. Ackerman, Gary Michael Diamond, Keith Anthony Hall, James M. Longmire, Vince J. Murphy, Dawn E. Verdugo
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Publication number: 20080194399Abstract: The invention is directed to a metallocene catalyst system comprising an inert silica support having pores with a peak pore volume of greater than about 0.115 mL/g at a pore diameter between about 250 Angstroms and about 350 Angstroms, and an alumoxane activator, with the metallocene being bound substantially throughout the support. The activator is grafted to the support in a solvent at a reflux temperature of toluene to obtain an aluminoxane on silica, and a metallocene component is added to make a MCS having a metallocene loading of about 2 wt %. This facilitates the production of metallocene catalyst systems having increased catalytic activity than previously recognized that is at least about 20 percent higher than the catalytic activity for a metallocene loading of about 1 wt % where the activator is grafted to the support at room temperature.Type: ApplicationFiled: January 14, 2008Publication date: August 14, 2008Applicant: FINA TECHNOLOGY, INC.Inventors: Jun Tian, William Gauthier, David Rauscher, Shady Henry
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Publication number: 20080187673Abstract: Aqueous oil-in-water emulsion comprising from 1 to 70% by weight, based on the total weight of the emulsion, of functional alkoxysilanes and/or condensed oligomers thereof and/or organoalkoxysiloxanes, at least one emulsifier and water, wherein the emulsion has a pH of from 5 to 9 and preferably a mean droplet size of the disperse phase of ?0.5 ?m, and the width of the droplet size distribution, expressed as the span (Formula I), is from 0.6 to 1.2. The preparation of the emulsions having the desired droplet size distribution is carried out in apparatuses having at least one pressure stage at a pressure of from 2 to 15 MPa. The emulsion can be used for hydrophobicizing porous mineral building materials.Type: ApplicationFiled: December 8, 2005Publication date: August 7, 2008Applicant: DEGUSSA GmbHInventors: Burkhard Standke, Kerstin Weissenbach, Bernd Bartkowiak
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Publication number: 20080161515Abstract: It has been discovered that using n-butylmethyldimethoxysilane (BMDS) as an external electron donor for succinate-containing Ziegler-Natta catalysts can provide a catalyst system that may prepare polypropylene films with improved properties. The catalyst systems of the invention provide for controlled chain defects/defect distribution and thus a regulated microtacticity along with broadened molecular weight distribution.Type: ApplicationFiled: December 18, 2007Publication date: July 3, 2008Applicant: FINA TECHNOLOGY, INC.Inventors: Kenneth P. Blackmon, Joseph L. Thorman, Shabbir Ahmedbhai Malbari, Michael Wallace
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Publication number: 20080146684Abstract: The present invention relates to a process for the conversion of synthesis gas to hydrocarbons in the presence of a modified supported Fischer-Tropsch catalyst composition.Type: ApplicationFiled: February 9, 2006Publication date: June 19, 2008Inventors: Josephus Johannes Helena Maria Font Freide, Lawrence Trevor Hardy
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Patent number: 7307036Abstract: A highly active alpha-olefin polymerization catalyst component is disclosed. In the presence of a co-catalyst, the catalyst component is useful for the production of LLDPE resins. The catalyst component is produced by a method whereby organic silicon compounds are reacted with a transition metal complex and active transition metal species is deposited on a silicon-containing MgCl2 that is prepared in situ in the presence of the organic silicon compounds.Type: GrantFiled: July 22, 2004Date of Patent: December 11, 2007Assignee: Formosa Plastics Corporation U.S.A.Inventors: Guangxue Xu, Honglan Lu, Zhongyang Liu, Chih-Jian Chen
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Patent number: 7304013Abstract: Bulk and supported catalysts are prepared from an aqueous slurry containing a catalytically active material and a binder. The slurry is either coated onto a support and dried to form a porous, high surface area phase containing the catalytically active material, or reduced to a paste-like consistency, molded and dried to form a bulk catalyst. The processes and catalysts may be employed in various catalytic chemical processes to achieve high effectiveness factor of the catalytically active material while achieving a lower pressure drop.Type: GrantFiled: June 30, 2003Date of Patent: December 4, 2007Assignee: Corning IncorporatedInventors: William P. Addiego, Charles M. Sorensen, Jr.
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Patent number: 7294729Abstract: 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 R2 are bonded together to form a diradical; or one of R1 or R2 is hydrogen or a monovalent hydrocarbyl radical, while the other of R1 or R2 is a hydrocarbyl radical bonded to an atom in Ar; wherein Ar is selected from 1,2-arylenes; Q is selected from 1,2-arylenes, 2,2?-bisarylenes and alkyl diradicals; and W is selected from II, III, IV, or V: wherein M is as defined hereinbefore; each R is independently selected from hydrogen and monovalent hydrocarbyl radicals; X is selected from alkyl and aryl diradicals; Ar1 and Ar2 are each independently selected from 1,2-arylenes;Ar3 and Ar4 are each independently selected from monovalent aryl radicals; and n in formula IV is 0 or 1.Type: GrantFiled: September 26, 2003Date of Patent: November 13, 2007Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Wei-Jun Peng, Johnathan E Holladay
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Patent number: 7291575Abstract: A catalyst composition, and olefin polymerization process using same, formed from a mixture of a non-aluminoxane aluminum compound, an inorganic oxide and a transition metal bidentate or tridentate complex in certain prescribed proportions. The composition can be formed in a single step or in-situ in the polymerization reaction zone. The resultant catalyst has high activity and is capable of producing high molecular weight olefin products without reactor fouling.Type: GrantFiled: August 5, 2003Date of Patent: November 6, 2007Inventor: Keng Yu Shih
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Catalyst for the synthesis of dimethyl carbonate from urea and methanol, preparation and use thereof
Patent number: 7271120Abstract: A catalyst for the preparation of dimethyl carbonate from urea and methanol having a composition on weight base of: active component of from 20 to 50 wt %, and carrier of from 80 to 50 wt %, and prepared by equal-volume spraying and impregnating method is disclosed. The method for the synthesis of dimethyl carbonate can be carried out in a catalytic rectification reactor, said method comprising: (1) dissolving urea in methanol to form a methanol solution of urea; and (2) feeding the methanol solution of urea and methanol counter-currently into the reaction zone, wherein the reaction is carried out at conditions including reaction temperature of from 120° C. to 250° C., reaction pressure of from 0.1 MPa to 5 MPa, kettle bottom temperature of from 70° C. to 210° C., stripping section temperature of from 70° C. to 250° C., rectifying section temperature of from 70° C. to 280° C., and reflux ratio of from 1:1 to 20:1.Type: GrantFiled: August 22, 2005Date of Patent: September 18, 2007Assignees: Institute of Coal Chemistry, Chinese Academy of Sciences, Feicheng Acid Chemicals Co., Ltd.Inventors: Yuhan Sun, Wei Wei, Ning Zhao, Baoyuan Sun, Bingsheng Zhang, Yanjun Chen -
Patent number: 7235510Abstract: A tethered ligand comprising the reaction product of an organofunctional silica and a ligand containing a functional group capable of reaction with said organofunctional silica, wherein the organofunctional silica is prepared from an alkyl silicate and an organofunctional silane is described. A supported catalyst is also described comprising additionally a source of catalytically-active metal. Methods for preparing the tethered ligand and supported catalyst are provided and uses of the supported catalyst for performing asymmetric reactions are claimed. The catalysts are readily separable from the reaction mixtures and may be re-used if desired.Type: GrantFiled: February 7, 2002Date of Patent: June 26, 2007Assignee: Johnson Matthey PLCInventors: Graeme Bradford, legal representative, William Patrick Hems, Antony Chesney, deceased
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Patent number: 7235173Abstract: A hydrotreating catalyst that contains at least one element of group VIB and/or group VIII of the periodic table and optionally phosphorus and/or silicon, with an organic compound as an additive that contains at least one nitrogen atom, is used for the transformation of hydrocarbon-containing fractions, in particular the hydrodesulfurization, the hydrodenitrification, the hydrodemetallization, the hydrogenation of various petroleum fractions, such as residues, vacuum distillates, gas oils and gasolines, and the hydroconversion of vacuum distillates.Type: GrantFiled: July 3, 2003Date of Patent: June 26, 2007Assignee: Institut Francais du PetroleInventors: Fabrice Diehl, Christophe Bouchy, Tivadar Cseri, Slavik Kasztelan
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Patent number: 7232870Abstract: Provided is a bridged cyclopentadienyl-dicarbollide complex having the formula of {L[(Cp)(C2B9R110)]}MR in which Cp is an unsubstituted, alkyl-substituted, aryl-substituted or fused ring cyclopentadienyl, R1 is hydrogen, or alkyl, L is a bridging unit that bonds to both Cp ring and cage carbon atoms, R is alkyl, aryl or a derivative thereof and M is Ti, Zr or Hf. A process for preparing the complex disclosed herein is also provided.Type: GrantFiled: March 18, 2005Date of Patent: June 19, 2007Assignee: The Chinese University of Hong KongInventors: Zuowei Xie, Yaorong Wang, Yuepeng Cai
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Patent number: 7214639Abstract: The present invention provides a novel immobilized metal complex catalyst of the formula I wherein M is a Group VIII metal, n is an integer with a value between 2 and 6, MLx is an organometallic complex.Type: GrantFiled: December 10, 2003Date of Patent: May 8, 2007Assignee: Council of Scientific and Industrial ResearchInventors: Raghunath Vitthal Chaudhari, Bibhas Ranjan Sarkar, Kausik Mukhopadhyay
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Patent number: 7211543Abstract: A photocatalyst composition which comprises (A) modified photocatalyst particles, the modified photocatalyst particles (A) being prepared by subjecting particles of a photocatalyst to a modification treatment with at least one modifier compound selected from the group consisting of different compounds each of which independently comprises at least one structural unit selected from the group consisting of a triorganosilane unit, a monooxydiorganosilane unit and a dioxyorganosilane unit; and (B) a binder component comprising a phenyl group-containing silicone optionally containing an alkyl group. A film formed using the above-mentioned photocatalyst composition, a functional composite comprising a substrate and the above-mentioned film formed on the substrate, and a shaped article produced by shaping the above-mentioned photocatalyst composition.Type: GrantFiled: June 3, 2002Date of Patent: May 1, 2007Assignee: Asahi Kasei Kabushiki KaishaInventors: Akira Nakabayashi, Kazuya Ota
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Patent number: 7202191Abstract: It has been discovered that using n-butylmethyldimethoxysilane (BMDS) as an external electron donor for Ziegler-Natta catalysts can provide a catalyst system that may prepare polypropylene films with improved properties. The catalyst systems of the invention provide for controlled chain defects/defect distribution and thus a regulated microtacticity. Consequently, the curve of storage modulus (G?) v. temperature is shifted such that the film achieves the same storage modulus at a lower temperature enabling faster throughput of polypropylene film through a high-speed tenter.Type: GrantFiled: October 4, 2005Date of Patent: April 10, 2007Assignee: Fina Technology, Inc.Inventors: Kenneth Paul Blackmon, David J. Rauscher, Michael R. Wallace
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Patent number: 7166265Abstract: A process for the preparation of mesostructured organofunctional silica and silica-alumina compositions using a hydrolyzable organosilane compound is described. The process uses a water soluble silicate to form the compositions, which have hexagonal, wormhole or foam mesostructures. The compositions are useful for catalytic and sorption applications.Type: GrantFiled: November 20, 2003Date of Patent: January 23, 2007Assignee: Board of Trustees of Michigan State UniversityInventors: Thomas J. Pinnavaia, Jainisha R. Shah, Seong-Su Kim
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Patent number: 7148173Abstract: Heterogeneous catalytic compositions obtained by reacting a porous inorganic support with an alumoxane and subsequently supporting at least one metallocene compound thereon. A process for polymerization of ?-olefins in a slurry or in a gas phase, the process catalyzed by such heterogeneous catalytic compositions.Type: GrantFiled: April 26, 1999Date of Patent: December 12, 2006Assignee: Repsol Quimica, S.A.Inventors: Antonio Muñoz-Escalona Lafuente, Pilar Lafuente Cañas, Jose Sancho Royo, Begoña Peña Garcia, Carlos Martin Marcos
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Patent number: 7141690Abstract: 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 may be the same or different and each independently denotes a substituent selected from the group consisting of the groups (I) and (II): group (I): hydrogen, alkyl and so on, group (II): alkoxy, alkylthio and so on, provided that at least one of R1, R2, R3 and R4 is a substituent selected from group (II); R5, R6, R7, R8, R9, R10, X1 and X2 may be the same or different and are each hydrogen, halogen, alkyd or the like; and a catalyst for olefin polymerization comprising said complex, an organoaluminum compound and a boron compound are provided.Type: GrantFiled: February 6, 2003Date of Patent: November 28, 2006Assignee: Sumitomo Chemical Company, LimitedInventors: Hidenori Hanaoka, Taichi Senda, Eiji Yoshikawa, Satoshi Kobayashi
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Patent number: 7115539Abstract: A metal compound obtained by a process comprising the step of contacting, in a specific ratio, a compound represented by the formula M1L1r, a compound represented by the formula R1s?1TH, and a compound represented by the formula R24?nJ(OH)n; a catalyst component for addition polymerization comprising the metal compound; a catalyst for addition polymerization using the catalyst component; and a process for producing an addition polymer using the catalyst.Type: GrantFiled: January 9, 2004Date of Patent: October 3, 2006Assignee: Sumitomo Chemical Company LimitedInventors: Kazuo Takaoki, Hideki Oshima, Makoto Satoh
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Patent number: 7109143Abstract: It has been discovered that using n-butylmethyldimethoxysilane (BMDS) as an external electron donor for Ziegler-Natta catalysts can provide a catalyst system that may prepare polypropylene films with improved properties. The catalyst systems of the invention provide for controlled chain defects/defect distribution and thus a regulated microtacticity. Consequently, the curve of storage modulus (G?) v. temperature is shifted such that the film achieves the same storage modulus at a lower temperature enabling faster throughput of polypropylene film through a high-speed tenter.Type: GrantFiled: September 10, 2003Date of Patent: September 19, 2006Assignee: Fina Technology, Inc.Inventors: Kenneth Paul Blackmon, David J. Rauscher, Michael Ray Wallace
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Patent number: 7094901Abstract: A cocatalyst or cocatalyst component, including a compound corresponding to the formula: (A*+a)b(Z*J*j)?cd, wherein: A* is a cation of from 1 to 80 atoms, not counting hydrogen atoms, Z* is an anion group of from 1 to 50 atoms, not counting hydrogen atoms, containing two or more Lewis base sites; J* is a Lewis acid of from 1 to 80, not counting hydrogen atoms, coordinated to at least one Lewis base site, and optionally two or more such J* groups may be joined together in a moiety having multiple Lewis acidic functionality, j is from 2 to 12 and a, b, c, and d are integers from 1 to 3, with the proviso that a×b is equal to c×d, and provided further that one or more of A*, Z* or J* comprises a hydroxyl group or a polar group containing quiescent reactive functionality.Type: GrantFiled: June 24, 2004Date of Patent: August 22, 2006Assignee: Dow Global Michigan Technologies Inc.Inventors: David A. Babb, David R. Neithamer, Richard E. Campbell, Jr., Grant B. Jacobsen, Edmund M. Carnahan
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Patent number: 7074863Abstract: A metallocene catalyst in which the metal is coordinated by a ?5 cyclopentadienyl ligand which forms part of an indenyl or indenyloid moiety, characterized in that said moiety is directly or indirectly substituted at the 4-, 5-, 6- or 7-position by a pendant siloxy or germyloxy group.Type: GrantFiled: June 21, 2002Date of Patent: July 11, 2006Assignee: Borealis Technology OyInventors: Peter Ekholm, Hendrik Luttikhedde, Janne Maaranen, Antti Penninkangas, Carl-Eric Wilen
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Patent number: 7067687Abstract: Mesostructured and microporous to mesoporous organofunctionalized silica compositions are described. The compositions incorporate the organofunctional group L as part of a LSiO3 unit in the framework of the compositions. In addition the compositions incorporate the organofunctional group R as part of a O3Si—R—siO3 unit in the framework of the compositions. The compositions are useful as molecular sieves, supports for catalysts and numerous other applications requiring an organo group on surfaces of a silica.Type: GrantFiled: March 8, 2004Date of Patent: June 27, 2006Assignee: Board of Trustees of Michigan State UniversityInventors: Thomas J. Pinnavaia, Yutaka Mori
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Patent number: 7049264Abstract: A supported catalyst for olefin polymerization comprises A) as support material, a copolymer comprising the monomer units I, II and III, where the monomer units I have the formula (I) and the monomer units II have the formula (II), ?where the variables have the following meanings: R1 is hydrogen, C1-C4-alkyl or phenyl, R2 is substituted or unsubstituted aryl or branched or unbranched alkyl or alkenyl, A1 is a direct chemical bond or a substituted or unsubstituted phenylene group, R3 are identical or different and are each hydrogen, C1-C10-alkyl or substituted or unsubstituted phenyl, p is an integer from 0 to 8, and R4 to R7 are hydrogen, C1-C10-alkyl or substituted or unsubstituted phenyl, and the monomer units III have polar groups, and B) at least one metallocene complex and C) at least one compound capable of forming metallocenium ions.Type: GrantFiled: June 7, 2000Date of Patent: May 23, 2006Assignees: Basell Polyolefine GmbH, Max-Planck Gesellschaft zur Förderung d. Wissenschaften e.V.Inventors: Matthias Koch, Martin Stork, Markus Klapper, Klaus Müllen, Heike Gregorius, Ursula Rief
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Patent number: 7037872Abstract: The invention relates to a metallocene catalyst in which the metal is coordinated by any ?5 cyclopentadienyl ligand characterised in that said ligand is directly or indirectly substituted by a pendant siloxy or germyloxy group which contains an olefinic residue.Type: GrantFiled: July 24, 2002Date of Patent: May 2, 2006Assignee: Borealis Technology OyInventors: Melanie Aubert, Carl-Eric Wilen
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Patent number: 7026494Abstract: 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. Processes for forming such compositions and for forming polyolefins with such compositions are also disclosed. Metallocene compounds are also presented.Type: GrantFiled: January 10, 2005Date of Patent: April 11, 2006Assignee: Chevron Phillips Chemical Company, LPInventors: Qing Yang, Michael D. Jensen, Matthew G. Thorn, Max P. McDaniel, Joel L. Martin, Tony R. Crain
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Patent number: 7019145Abstract: The invention concerns an improved method for preparing catalysts for hydrosilylation reactions of compounds with ethylene or acetylene unsaturation (for example olefins or acetylene derivatives), in particular but not exclusively those involving polyorganosiloxanes (POS) bearing Si—H units and POS bearing Si-(ethylene or acetylene unsaturation) units. Said preparation corresponds to the following synthesis (I), wherein: A=B=carbon: T1, T2=cyclohexyl, t-butyl or methyl; T3, T4=H; DVTMS=divinyltetramethylsiloxane; t-BuOK=potassium tert-butylate; T.A=room temperature. The invention is characterised in that it consists in carrying out said synthesis in a single step by bringing together salt (III) above, Karstedt (IV) in the presence of a solvent (V) (THF) and a base (VI) (t-BuOK) at room temperature.Type: GrantFiled: June 4, 2002Date of Patent: March 28, 2006Assignee: Rhodia ChimieInventors: Olivier Buisine, Istvan Marko, Sebastien Sterin
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Patent number: 7005398Abstract: A catalyst is used which comprises a cocatalyst component wherein a non-coordinating ion-containing compound is chemically bonded to a fine particulate carrier, together with a metallocene compound and a specific hydrocarbon. There are provided an olefin polymerization catalyst which produces olefin polymers containing few solvent-soluble components without a wider molecular weight distribution, and which exhibits no significant reduction in activity even after storage, as well as olefin polymerization catalyst components and a method for their storage, and a process for production of propylene polymers using them.Type: GrantFiled: December 19, 2001Date of Patent: February 28, 2006Assignee: SunAllomer Ltd.Inventors: Satoru Ishigaki, Shinji Hinokuma
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Patent number: 6992036Abstract: A polymerization catalyst system and process, which utilizes a Group 14 and Group 16 containing non-crystalline compound to solubilize or emulsify polymerization catalyst components, is disclosed.Type: GrantFiled: September 10, 2003Date of Patent: January 31, 2006Assignee: Univation Technologies, LLCInventor: David E. Gindelberger
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Patent number: 6939930Abstract: A process for polymerizing olefins is disclosed. The process uses a hydrosilane in a polymerization catalyzed by an open architecture, bridged indenoindolyl organometallic complex and an activator. Polyolefins from the process have increased molecular weight.Type: GrantFiled: September 9, 2003Date of Patent: September 6, 2005Assignee: Equistar Chemicals, LPInventors: Mark K. Reinking, Gregory G. Hlatky
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Patent number: 6900321Abstract: New ligands, compositions, metal-ligand complexes and arrays with pyridylamine ligands are disclosed that catalyze the polymerization of monomers into polymers. Certain of these catalysts with hafnium metal centers have high performance characteristics, including higher comonomer incorporation into ethylene/olefin copolymers, where such olefins are for example, 1-octene, isobutylene or styrene. Certain of the catalysts are particularly effective at polymerizing propylene to high molecular weight isotactic polypropylene in a solution process at a variety of polymerization conditions.Type: GrantFiled: November 6, 2001Date of Patent: May 31, 2005Assignee: Symyx Technologies, Inc.Inventors: Thomas R. Boussie, Gary M. Diamond, Christopher Goh, Keith A. Hall, Anne M. LaPointe, Margarete K. Leclerc, Cheryl Lund, Vince Murphy
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Patent number: 6900153Abstract: A method for forming supported late transition metal olefin polymerization catalysts is described in which an already formed transition metal complex, usually containing a reactive functional group, is placed on a support containing a complementary reactive functional group. Also described are novel polymerization catalyst components containing late transition metal complexes of neutral tridentate ligands.Type: GrantFiled: March 27, 2002Date of Patent: May 31, 2005Assignees: E.I. Du Pont de Nemours and Company, University of North Carolina at Chapel HillInventor: Peter Preishuber-Pfluegl
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Patent number: 6884749Abstract: Olefin polymerization in the presence of heterogeneous supported catalysts is improved by incorporating into the supported catalyst a unifunctional hydrophobic tether comprising a hydrophobic portion containing no basic nitrogen and a univalent reactive group. The unifunctional hydrophobic tether reduces fouling and sheeting in gas phase polymerization processes and improves polymer morphology and bulk density in slurry polymerization processes, while substantially maintaining or enhancing catalyst polymerization activity.Type: GrantFiled: October 17, 2002Date of Patent: April 26, 2005Assignee: Equistar Chemicals L.P.Inventors: Karen L. Neal-Hawkins, Sandor M. Nagy, William J. Sartain, Kiran Gupte, Kenneth W. Johnson
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Patent number: 6881867Abstract: In a process for the hydroformylation of ethylenically unsaturated compounds, at least one complex of a metal of transition group VIII. with at least one phosphorus-, arsenic- or antimony-containing compound as ligand is used as hydroformylation catalyst, where the compound used as ligand in each case comprises two groups which comprise a P, As or Sb atom and at least two further hetero atoms and are bound to a xanthene-like molecular framework. New compounds of this type and catalysts which comprise at least one complex of a metal of transition group VIII. with at least one such compound as ligand are also provided.Type: GrantFiled: September 17, 2001Date of Patent: April 19, 2005Assignee: BASF AktiengesellschaftInventors: Wolfgang Ahlers, Dag Wiebelhaus, Rocco Paciello, Michael Bartsch, Robert Baumann, Dieter Vogt, Alison Hewat
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Patent number: 6875243Abstract: Catalysts and processes for preparing polyisocyanates containing isocyanurate groups, and their use, wherein the catalysts are represented by the following formula (1): [Hl?Xm?Fn?]p·[R(4?q)Si(NR1R2)q]r??(I), wherein n=m+l with 1?m/n>0, and l?0, p>0 and r>0, and the ratio p/r is any value, q=1 or 2, and R, R1, R2 and X are as defined.Type: GrantFiled: November 27, 2002Date of Patent: April 5, 2005Assignee: Degussa AGInventors: Michael Ewald, Manuela Windmueller, Waltraud Poersch, Stephan Kohlstruk
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Patent number: 6858745Abstract: This invention is directed to alkyl cobalt (III) dioximates and methods for making these dioximates.Type: GrantFiled: February 21, 2003Date of Patent: February 22, 2005Assignee: E. I. du Pont de Nemours and CompanyInventors: Alexei A. Gridnev, Gregorii A. Nikiforov
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Publication number: 20040266613Abstract: Bulk and supported catalysts are prepared from an aqueous slurry containing a catalytically active material and a binder. The slurry is either coated onto a support and dried to form a porous, high surface area phase containing the catalytically active material, or reduced to a paste-like consistency, molded and dried to form a bulk catalyst. The processes and catalysts may be employed in various catalytic chemical processes to achieve high effectiveness factor of the catalytically active material while achieving a lower pressure drop.Type: ApplicationFiled: June 30, 2003Publication date: December 30, 2004Inventors: William P. Addiego, Charles M. Sorensen
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Patent number: 6812303Abstract: A novel olefin polymerization catalyst comprising: (A) a transition metal compound comprising a transition metal having &eegr;-bonded thereto a cyclic anionic ligand; (B) a mixture of (B-1) an activator compound capable of forming, together with component (A), a metal complex having a catalytic activity and (B-2) an organometal compound, the activator compound (B-1) comprising a cation and a noncoordinating, compatible anion; (C) a solid component; and optionally (D) an organoaluminum compound, wherein the catalyst is obtained by contacting components (A) to (C) and optionally component (D).Type: GrantFiled: May 10, 2000Date of Patent: November 2, 2004Assignee: Asahi Kasei Kabushiki KaishaInventors: Fumio Matsushita, Akio Fujiwara
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Patent number: 6800766Abstract: The present invention relates to a process for stereoselective or regioselective chemical synthesis which generally comprises reacting a nucleophile and a chiral or prochiral cyclic substrate in the presence of a non-racemic, chiral catalyst to produce a stereoisomerically- and/or regioisomerically-enriched product. The present invention also relates to hydrolytic kinetic resolutions of racemic and diastereomeric mixtures of epoxides.Type: GrantFiled: July 26, 2002Date of Patent: October 5, 2004Assignee: President and Fellows of Harvard CollegeInventors: Eric N. Jacobsen, Makoto Tokunaga, Jay F. Larrow
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Patent number: 6794327Abstract: The present invention provides a supramolecular structure produced by the process comprising reacting a multi-generation dendrimer with a monomer, where the dendrimer comprises a core molecule, a plurality of interior generations spherically disposed around the core molecule and an outermost generation comprising a plurality of dendritic branches having terminal groups sufficiently reactive to undergo addition or substitution reactions, where the monomer introduces a labile bond and at least one cross-linkable moiety to the terminal groups of each dendritic branch, and where the cross-linkable moiety is bonded to the terminal group via the labile bond; crosslinking the cross-linkable moieties of adjacent dendritic branches; and cleaving the labile bonds, thereby freeing the dendrimer and forming a molecule encapsulated within a cross-linked shell molecule. The present invention further provides a process for the production of the supramolecular structures.Type: GrantFiled: June 22, 2001Date of Patent: September 21, 2004Assignee: The University of AkronInventors: Wiley J. Youngs, Claire A. Tessier, Peter L. Rinaldi, Yanhui Niu
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Publication number: 20040181104Abstract: A dehydrogenation catalyst includes an organometallic pincer complex bonded to a mesoporous inorganic oxide support, the organometallic pincer complex possessing catalytic activity for alkyl group dehydrogenation. The pincer complex includes at least one element selected from Group VIII or Group IB of the Periodic Table of the elements, and at least one element selected from Group VA of the Periodic Table of the elements in each of two molecular arms, the Group VIII or Group IB element being bonded to each of the Group VA elements. The catalyst is advantageously employed in conjunction with catalytic distillation to permit the dehydrogenation of organic compounds at lower temperatures and at lower cost than conventional methods.Type: ApplicationFiled: March 2, 2004Publication date: September 16, 2004Applicant: ABB Lummus Global Inc.Inventors: Chuen Y. Yeh, Zhiping Shan, Philip J. Angevine, Dinesh Gandhi
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Patent number: 6787676Abstract: Non-chiral and, in particular, optically active alcohols are prepared from a carbonyl compound with hydrogen in the presence of a catalyst, a base and optionally a diamine in an advantageous manner by using a catalyst that contains both a support-bonded Ru(II) complex bisphosphine ligand and a diamine ligand.Type: GrantFiled: February 4, 2002Date of Patent: September 7, 2004Assignee: Studiengesellschaft Kohle mbHInventor: Dieter Arlt
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Publication number: 20040171482Abstract: Mesostructured and microporous to mesoporous organofunctionalized silica compositions are described. The compositions incorporate the organofunctional group L as part of a LSiO3 unit in the framework of the compositions. In addition the compositions incorporate the organofunctional group R as part of a O3Si—R-siO3 unit in the framework of the compositions. The compositions are useful as molecular sieves, supports for catalysts and numerous other applications requiring an organo group on surfaces of a silica.Type: ApplicationFiled: March 8, 2004Publication date: September 2, 2004Applicant: Board of Trustees of Michigan State UniversityInventors: Thomas J. Pinnavaia, Yutaka Mori
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Publication number: 20040167015Abstract: Broad molecular weight polyethylene and polyethylene having a bimodal molecular weight profile can be produced with chromium oxide based catalyst systems employing alkyl silanols. The systems may also comprise various organoaluminum compounds. Catalyst activity and molecular weight of the resulting polyethylene may also be tuned using the present invention.Type: ApplicationFiled: January 22, 2004Publication date: August 26, 2004Inventors: Kevin J. Cann, Minghui Zhang, John H. Moorhouse, Maria A. Apecetche
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Patent number: 6780949Abstract: Olefin polymerizations employing a complex of a Group 8, 9, or 10 transition metal with a bidentate ligand as part of the polymerization catalyst system are improved by adding to the polymerization a silicon compound in which at least one atom of a Group 15 or 16 element is bound to a silicon atom. The polymerizations often have increased polymer productivity and/or the polymerization catalyst has a longer half life.Type: GrantFiled: November 15, 2002Date of Patent: August 24, 2004Assignee: E. I. du Pont de Nemours and CompanyInventors: Lynda Kaye Johnson, Stephan J. Mclain, Karl J. Sweetman
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Patent number: 6781006Abstract: A method for making a chiral transition metal-ligand catalyst complex that is active in catalyzing stereoselective ring opening reactions includes contacting an asymmetric tetradentate ligand, in an excess of a Brønsted acid, with a salt of a first row transition metal, wherein the acidity of the conjugate acid of the salt is the same as or less than the acidity of the Brønsted acid, under conditions effective to allow formation of the active chiral transition metal-ligand catalyst complex, and forming a solution of the complex in a water-miscible, protic solvent from which the active complex can be precipitated by the addition of water and adding water to the solution to precipitate at least a portion of the complex.Type: GrantFiled: September 17, 2002Date of Patent: August 24, 2004Assignee: Rhodia Pharma Solutions Inc.Inventors: Jay F. Larrow, Karl Hemberger, Hocine Kabir, Philippe Morel
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Patent number: RE40121Abstract: The present invention relates to zwitterionic neutral transition metal compounds. The compounds are suitable as catalyst components for the polymerization of olefins.Type: GrantFiled: May 8, 2001Date of Patent: February 26, 2008Inventors: Gerhard Erker, Bodo Temme, Michael Aulbach, Bernd Bachmann, Frank Küber