Patents Examined by Paul F. Shaver
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Patent number: 6534667Abstract: A composition which comprises a mixture of water-soluble, amino-functional silicon compounds which are essentially free from alkoxy groups, water, optionally a content of alcohol and optionally a content of acid, the composition comprising silicon compounds of the general formula I: NH2[CH2)2NH]x(CH2)3SiO1.5 (I) in which x is 0, 1 or 2, and of the general formula II: (SiO1.5(CH2)3[NH(CH2)2]yNH[(CH2)2NH]x(CH2)3Si)1.5 (II) in which y and z are 0, 1 or 2 and are identical or different. The compositions are obtainable by mixing corresponding aminoalkoxy silanes, hydrolyzing the mixture and removing the hydrolysis alcohol formed as a result. The invention furthermore relates to a process for the preparation of the compositions and to their use in a wide variety of applications.Type: GrantFiled: February 28, 2000Date of Patent: March 18, 2003Assignee: Degussa- AGInventors: Burkhard Standke, Roland Edelmann, Albert-Johannes Frings, Michael Horn, Peter Jenkner, Ralf Laven, Helmut Mack, Jaroslaw Monkiewicz, Günter Switalla
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Patent number: 6534665Abstract: The present invention relates to metallocenes, wherein the two cyclopentadienyl rings are connected to each other by a single carbon atom characterized by the following general formula III where each A, equal to or different from each other, is selected from the group consisting of: hydrogen, OR3, NRR4, or SR5; and to compounds of formula IV wherein each B, equal to or different from each other, is selected from the group consisting of: OH, NRH or SH, obtained by hydrolizing the corresponding oxygen, nitrogen or sulfur containing groups from compounds of formula III. These compounds are used as active catalyst components in the polymerization of olefins.Type: GrantFiled: October 26, 1999Date of Patent: March 18, 2003Assignee: Repsol Quimica S.A.Inventors: Maria Francisca Martinez Nu{overscore (n)}ez, Antonio Mu{overscore (n)}oz-Escalona LaFuente, Bego{overscore (n)}a Pe{overscore (n)}a Garcia, Pilar LaFuente Ca{overscore (n)}as
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Patent number: 6534668Abstract: A process for the production of sulfur containing organosilicon compounds of the formula: (RO)3−mRmSi—Alk—Sn—Alk—SiRm(OR)3−m where R is independently a monovalent hydrocarbon of 1 to 12 carbon atoms; Alk is a divalent hydrocarbon of 1 to 18 carbon atoms; m is an integer of 0 to 2, n is a number from 1 to 8; based on phase transfer catalysis techniques is disclosed. The process comprises reacting: (A) a sulfide compound having the formula M2Sn or MHS, where H is hydrogen, M is ammonium or an alkali metal, n is as defined above, with (B) a silane compound of the formula; (RO)3−mRmSi—Alk—X where X is Cl, Br or I, and m is the same as above, and optionally, (C) sulfur in the presence of a phase transfer catalyst and an aqueous phase containing a buffer. The improvement of the present invention is characterized by adding a buffer to the aqueous phase, which minimizes or prevents gelling of the sulfur containing organosilicon compounds.Type: GrantFiled: June 29, 2001Date of Patent: March 18, 2003Assignee: Dow Corning CorporationInventors: Michael Wolfgang Backer, Howard Marvin Bank, John Michael Gohndrone, William Charles Maki, Charles Edmund Skinner, Anil Kumar Tomar, Hongjun Yue
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Patent number: 6531621Abstract: The invention relates to a method for producing organopolysiloxane terminated with alkoxy groups, wherein A) organopolysiloxane terminated with HO is reacted with B) alkoxysilane having at least three alkoxy groups and/or whose partial hydrolysate is made to react in the presence of C) acid phosphoric acid ester of general formula (I): (HO)aOP(—O—[(CR12)b—O]c[(CR22)d]e—L—M)(3−a), wherein a=1 or 2; R1 and R2=a hydrogen, methyl or hydroxyl radical; b and d=2 or 3; c=integral values from 2 to 15; e=0 or 1; L=a radical from the group —O—, —COO—, —OOC—, —CONR3—, —NR4CO— and —CO—; R3 and R4=a hydrogen or a C1-C10-alkyl radical and M=a monovalent, optionally a hydroxyl, fluorine, chlorine, bromine, C1-C10-alkoxylalkyl or cyano group substituted C1- to C20-hydrocarbon radical, provided that the radicals R1 and R2 can only be at one giveType: GrantFiled: July 18, 2000Date of Patent: March 11, 2003Assignee: Wacker-Chemie GmbHInventors: Norman Dorsch, Rudolf Heinrich, Oswin Sommer, Stefan Oberneder, Wolfgang Hechtl
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Patent number: 6531618Abstract: The invention relates to a process for preparing water-soluble organotin catalysts by contacting organotin compounds with polyelectrolytes and, optionally, subsequently removing the water.Type: GrantFiled: May 25, 2000Date of Patent: March 11, 2003Assignee: Crompton GmbHInventors: Oliver Schumacher, Ursula Gerigk
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Patent number: 6528672Abstract: A novel perfluoropolyether-modified aminosilane cures into a film having improved water and oil repellency and anti-staining properties. A surface treating agent comprising the aminosilane, and an article with a coating of the aminosilane are also provided.Type: GrantFiled: October 16, 2001Date of Patent: March 4, 2003Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Hiromasa Yamaguchi, Koichi Yamaguchi, Hirofumi Kishita
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Patent number: 6528673Abstract: Disclosed herein is a process for the manufacture of a blocked mercaptosilane wherein the process is selected from the group consisting of: (1) reacting a mercaptosilane and a monoacid anhydride corresponding to a thioester group present in the desired product; (2) reacting an alkali salt of a mercaptosilane with the appropriate acid anhydride or acid halide; (3) transesterifying a mercaptosilane and an ester in the presence of an alkali metal of an acid corresponding to the ester; (4) transesterifying a thioester silane and another ester; (5) transesterifying a 1-sila-2-thiacyclopentane or a 1-sila-2-thiacyclohexane and an ester; and (6) reacting an alkali metal salt of a thioacid with a haloalkylsilane.Type: GrantFiled: November 9, 2001Date of Patent: March 4, 2003Assignee: Crompton CorporationInventors: Richard W. Cruse, Robert J. Pickwell, Keith J. Weller, Eric R. Pohl
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Patent number: 6528674Abstract: A method for making an alkylhalosilane is provided wherein the method comprises heat treating silicon and a form of copper at a temperature greater than about 500° C. to produce a contact mass and effecting reaction between an alkyl halide and silicon in the presence of the contact mass to produce alkylhalosilane.Type: GrantFiled: April 20, 2000Date of Patent: March 4, 2003Assignee: General Electric CompanyInventors: Larry Neil Lewis, William Jessup Ward, John Matthew Bablin
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Patent number: 6528670Abstract: The invention is directed to bridged metallocene catalyst complexes that are sufficiently soluble in aliphatic solvents to be particularly suitable for solution olefin polymerization processes such that olefin copolymers can be prepared with high molecular weights and catalyst activities particularly at high polymerization reaction temperatures. More specifically, the invention particularly relates to a polymerization process for ethylene copolymers having a density of about 0.850 to about 0.940 comprising contacting, under solution polymerization conditions at a reaction temperature at or above 60° C. to 250° C.Type: GrantFiled: October 22, 1999Date of Patent: March 4, 2003Assignee: ExxonMobil Chemical Patents Inc.Inventor: Francis C. Rix
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Patent number: 6521769Abstract: Chiral ligands and transition metal complexes based on such chiral ligands useful in asymmetric catalysis are disclosed. The chiral ligands include chiral C1-C6 TunaPhos ligands. The ruthenium TunaPhos complex reduces ketones to the corresponding alcohols with 95-99.6% enantioselectivity. The transition metal complexes of the chiral ligands are useful in asymmetric reactions such as asymmetric hydrogenation, hydride transfer, hydrosilylation, hydroboration, hydrovinylation, hydroformylation, hydrocarboxylation, isomerization, allylic alkylation, cyclopropanation, Diels-Alder reaction, Heck reaction, isomerization, Aldol reaction, Michael addition and epoxidation reactions.Type: GrantFiled: September 19, 2000Date of Patent: February 18, 2003Assignee: The Penn State Research FoundationInventor: Xumu Zhang
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Patent number: 6521785Abstract: The present invention relates to surfactants useful in life science and industrial formulations. More particularly, the invention relates to surfactants of alkoxylated amine neutralized by aromatic sulfonic acid and pesticide formulations containing the same.Type: GrantFiled: February 5, 2001Date of Patent: February 18, 2003Assignee: Syngenta Participations AGInventors: Tammy Tyler Shannon, Carolyn Estep Moore, Victor Shui-Chiu Chow
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Patent number: 6518446Abstract: The invention relates to a method for producing formoxysilane. A silane of the formula RnSiH4−n, wherein R is an organic or inorganic substituent and n=0, 1, 2 or 3, is converted with carbon dioxide in a solvent in the presence of a catalyst consisting of a compound of a transitional metal pertaining to the subgroup VIIIb of the periodic system. The aim of the invention is to find a catalyst for the method mentioned above. The catalyst should be more simple, easy to produce and thus more cost-effective, easily available in large quantities and being provided with high activity and product selectivity. To this end, a halide of the transitional metal or a compound of the transitional metal are used as catalyst. Said compound is produced by converting a halide of the transitional metal with a nitrile in the presence of the silane of the formula RnSiH4−n.Type: GrantFiled: January 24, 2002Date of Patent: February 11, 2003Assignee: Forschungszentrum Karlsruhe GmbHInventors: Eckhard Dinjus, Stephan Pitter, Achim Jansen
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Patent number: 6518447Abstract: Chlorosilane compounds having a thexyl group which is a bulky substituent group are novel. The compounds are useful silylating agents because stable silylated products are obtained due to the bulky substituent group.Type: GrantFiled: November 5, 2001Date of Patent: February 11, 2003Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Yoichi Tonomura, Tohru Kubota, Yasufumi Kubota
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Patent number: 6512132Abstract: The present invention relates to aqueous solutions of amino group-containing silanol compounds, glass substrates and glass fibers which are surface-treated with the solutions, and processes for the preparation of aqueous solutions of amino-containing silanol compounds. The aqueous solutions of amino group-containing silanol compounds of the present invention are prepared by reacting 1 mole of an aminoalkylsilane with 1.5 to 10 moles of water, and distilling off a volatile organic compound by-producing during the reaction until the content becomes less than 4% by weight.Type: GrantFiled: May 21, 2002Date of Patent: January 28, 2003Assignee: Chisso CorporationInventors: Yuichi Isoda, Tomoyuki Ohba, Kozaburo Matsumura
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Patent number: 6506857Abstract: The invention is directed to bridged metallocene catalyst complexes that are sufficiently soluble in aliphatic solvents to be particularly suitable for solution olefin polymerization processes such that olefin copolymers can be prepared with high molecular weights and catalyst activities particularly at high polymerization reaction temperatures. More specifically, the invention particularly relates to a polymerization process for ethylene copolymers having a density of about 0.850 to about 0.940 comprising contacting, under solution polymerization conditions at a reaction temperature at or above 60° C. to 250° C.Type: GrantFiled: March 7, 2002Date of Patent: January 14, 2003Assignee: ExxonMobil Chemical Patents Inc.Inventor: Francis C. Rix
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Patent number: 6506921Abstract: Disclosed are compounds produced by a process comprising the step of reacting an amine reactant with an epoxide reactant to form a hydrolytically stable carbon-nitrogen bond therebetween, wherein at least one of the amine or epoxide reactants comprises a terminal alkoxysiyl group. Also disclosed are curable compositions comprising the compounds of the present invention and the cured products derived therefrom.Type: GrantFiled: June 29, 2001Date of Patent: January 14, 2003Assignee: Virginia Tech Intellectual Properties, Inc.Inventors: Garth L. Wilkes, Chenghong Li
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Patent number: 6506923Abstract: In a process for preparing oganohalosilanes by reacting metallic silicon particles with an organohalide in the presence of a copper catalyst, a contact mass composed of the metallic silicon and the catalyst further contains a minute, but effective amount of a catalytic metal powder which has been produced by an atomizing technique. The process is successful in drastically increasing a formation rate without lowering the selectivity of useful silane.Type: GrantFiled: February 14, 2002Date of Patent: January 14, 2003Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Tetsuya Inukai, Susumu Ueno, Toshio Shinohara, Mikio Aramata, Yoichi Tanifuji, Hajime Ishizaka
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Patent number: 6500977Abstract: A process for producing an organosilane including reacting an alkene halide with a hydrogen silane in the presence of a hydrosilating catalyst. The alkene halide is present in an amount such that a molar excess of at least 5 moles per one mole of hydrogen silane is maintained.Type: GrantFiled: November 27, 2001Date of Patent: December 31, 2002Assignee: Dow Corning CorporationInventors: Paul C. Dinh, Dennis E. Phillips, David L. Brandt, William C. Maki
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Patent number: 6500976Abstract: Organosilicon compounds each having in a molecule (A) a perfluoroalkyl group of at least 3 carbon atoms which may be separated by an etheric oxygen atom, (B) a monovalent hydrocarbon group containing a carboxylic acid anhydride structure, and (C) a hydrosilyl (SiH) group are novel and added to thermosetting elastomer compositions as adhesion aids whereby the compositions are improved in adhesion to various materials including metals, alloys, plastics, and ceramics.Type: GrantFiled: October 5, 2001Date of Patent: December 31, 2002Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Takashi Matsuda, Mikio Shiono, Kenichi Fukuda
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Patent number: 6498263Abstract: The present invention relates to a series of novel silicone alkoxylated esters which have terminal carboxyl groups that form salt complexes with certain amid containing cationic compounds to form very mild conditioning products suited for personal care applications like shampoos, body wash, hand wash and bath products.Type: GrantFiled: July 5, 2002Date of Patent: December 24, 2002Assignee: Biosil Research InstituteInventors: Anthony J. O'Lenick, Jr., Charles Buffa