Silicon To Carbon Bond Formed Patents (Class 556/478)
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Publication number: 20110319647Abstract: The invention provides a method of producing silica particles, the method including preparing an alkali catalyst solution containing an alkali catalyst in a solvent including an alcohol, at a concentration of from about 0.6 mol/L to about 0.85 mol/L; and supplying tetraalkoxysilane into the alkali catalyst solution, and concurrently supplying an alkali catalyst into the alkali catalyst solution at a rate of from about 0.1 mol to about 0.4 mol per mole of the total amount of supply of the tetraalkoxysilane supplied in one minute.Type: ApplicationFiled: October 18, 2010Publication date: December 29, 2011Applicant: FUJI XEROX CO., LTD.Inventors: Hideaki YOSHIKAWA, Yuka ZENITANI, Hiroyoshi OKUNO, Shunsuke NOZAKI, Shinichiro KAWASHIMA, Sakae TAKEUCHI
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Publication number: 20110306741Abstract: This invention relates to the synthesis of substituted tetrahydroindenyls and the use of the synthesised complexes in the homo- and co-polymerisation of ethylene and alpha-olefins.Type: ApplicationFiled: December 15, 2009Publication date: December 15, 2011Applicants: TOTAL PETROCHEMICALS RESEARCH FELUYInventors: Alexander Z. Voskoboynikov, Vyatcheslav V. Izmer, Dmitry S. Kononovich, Abbas Razavi
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Publication number: 20110118496Abstract: A process for preparing an alkylaminoalkylalkoxysilane of formula (I) R—(NR?)—Y—Si(R1)n(OR2)3-n (I) in which R is a linear, branched or cyclic alkyl group having 1 to 12 carbon atoms, R? is a hydrogen (H) or is a linear, branched or cyclic alkyl group having 1 to 12 carbon atoms, Y is a bivalent alkyl group from the group of —CH2—, —(CH2)2—, —(CH2)3—, —(CH2)(CH(CH3))(CH2)— and —(CH2)4—, R1 and R2 groups are the same or different and are each a linear or branched alkyl group having 1 to 4 carbon atoms, and n is 0 or 1 or 2, by reacting an alkylamine, used in excess, with a haloalkylalkoxysilane, distilling off excess free alkylamine, treating the remaining product mixture with the alkylaminoalkylalkoxysilane and working up.Type: ApplicationFiled: April 17, 2009Publication date: May 19, 2011Applicant: EVONIK DEGUSSA GmbHInventors: Eckhard Just, Philipp Albert, Peter Jenkner
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Publication number: 20100280266Abstract: The invention includes a fixed-bed catalyst complex that includes (i) a metal carbene catalyst, wherein the metal is platinum, and (ii) a catalyst support that includes one or more of silica, alumina and/or glass. The invention provides a fixed-bed catalyst complex that includes a catalyst complex including a carbene chosen from those represented by at least one of Formulae (I), (II), (III), and (IV): Where the vales of X and R1 to R7 are specifically defined. The complex also includes a catalyst support that comprises silica, related reaction products, and related reaction systems.Type: ApplicationFiled: April 30, 2010Publication date: November 4, 2010Applicant: Gelest Technologies Inc.Inventors: Gerald L. Larson, Barry C. Arkles, Rudolph A. Cameron
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Publication number: 20100140541Abstract: Functionalized organomonoalkoxy (or monohydroxy) silanes, in particular alkenyl (allyl) functionalized silanes, are useful as intermediates in organic synthesis, and are prepared by reacting dialkyldialkoxysilanes with an organic halide compound (allyl halide) (III) in an ether solvent (SI), such compound (III) being suited to substitute the alkoxy groups by functionalized groups, for example alkenyl groups.Type: ApplicationFiled: November 9, 2007Publication date: June 10, 2010Inventors: Gérard Mignani, Samir Mansouri, Samuel Arthaud, Thierry Vidal
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Method for obtaining halogenated monoorganoxysilanes useful in particular as synthesis intermediates
Patent number: 7709672Abstract: The invention concerns the preparation of halogenated monoorganoxysilanes, of formula (I), said compounds being useful as synthesis intermediate in organic chemistry. Said method for preparing monoorganoxysilanes consists in: using as starting product halogenoalkylsilanes of the (CH3)2SiCl2 type and in substituting the silicon with a radical bearing a divalent unit bound to an electrophilic reactive group capable of reacting with at least an appropriate nucleophilic agent to form a functionalised monoorganoxysilane of formula (II) with, for example: R<1>=C1-C4 alkyl; R<2>, R<3>=C1-C6 alkyl; B=C1-C10 alkylene; m=1 or 2; Hal=halogen; W=amino, mercapto, (organosilyl)-organopolythio radical.Type: GrantFiled: September 10, 2002Date of Patent: May 4, 2010Assignee: Rhodia ChimieInventors: Nathalie Guennouni, Gérard Mignani, Virginie Pevere -
Publication number: 20100056819Abstract: The present invention provides a process for producing nano graphene platelets (NGPs) that are both dispersible and electrically conducting. The process comprises: (a) preparing a pristine NGP material from a graphitic material; and (b) subjecting the pristine NGP material to an oxidation treatment to obtain the dispersible NGP material, wherein the NGP material has an oxygen content no greater than 25% by weight. Conductive NGPs can find applications in transparent electrodes for solar cells or flat panel displays, additives for battery and supercapacitor electrodes, conductive nanocomposite for electromagnetic wave interference (EMI) shielding and static charge dissipation, etc.Type: ApplicationFiled: September 3, 2008Publication date: March 4, 2010Inventors: Bor Z. Jang, Aruna Zhamu
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Publication number: 20100048934Abstract: The present invention provides a method for producing a fullerene derivative, comprising the organic group addition step B in which an organic group is further added by reacting at least a basic compound and a halogen compound with a fullerene derivative, which is obtained by addition of a hydrogen atom and an organic group in the organic group addition step A, in which an organic group is added by reacting at least a Grignard reagent and a polar substance with a fullerene or fullerene derivative.Type: ApplicationFiled: November 6, 2007Publication date: February 25, 2010Applicant: JAPAN SCIENCE AND TECHNOLOGY AGENCYInventors: Eiichi Nakamura, Yutaka Matsuo, Akihiko Iwashita
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Patent number: 7655813Abstract: The invention relates to the preparation of organodialkylalkoxysilane using a continuous method consisting in bringing an alkanol into continuous contact with an omega-haloalkyl dialkylhalosilane in a countercurrent reactor, such as a plate column or a packed column. The reaction is performed in the aforementioned countercurrent reactor in the presence or absence of a non-reactive solvent with scavenging of the hydrochloric acid formed. The omega-haloalkyl dialkylalkoxysilane thus formed is particularly suitable for use as a starting material for the preparation of organosilicon compounds containing sulphur having general formula (I) by means of sulphidisation reaction on an alkaline metal polysulphide.Type: GrantFiled: April 7, 2008Date of Patent: February 2, 2010Assignee: Rhodia ChimieInventors: Kamel Ramdani, Bernard Vogin, Nathalie Guennouni
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Patent number: 7645895Abstract: The invention relates to a method for preparing a fluorinated and silylated derivative having a bond between the bearing carbon of at least one fluorine and one silicon. This method comprises at least one step during which a derivative of formula (I) Rf—CO—O-D, in which D is selected among silylated radicals, is placed in the presence of a base. The inventive method is used for synthesizing fluorinated derivatives.Type: GrantFiled: November 29, 2004Date of Patent: January 12, 2010Assignee: Rhodia ChimieInventors: Thierry Vidal, Nicolas Roques, Laurent Saint-Jalmes
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Publication number: 20090318726Abstract: New silylsubstituted 1,2-alkynes of the general formula 1 and a new way of synthesis of new and already known silylsubstituted 1,2-alkynes of the general formula 1. The unknown silylsubstituted 1,2-alkynes of general formula 1, in which R1 stands for trialkoxysilyl group, dimethyl(trimethylsiloxy)silyl group, phenyldimethylsilyl group, methylbis(trimethylsiloxy)silyl group; R2 stands for alkyl, trialkylsilyl group with all alkyl substituents the same, 1-trimethylsiloxycycloalkyl group, cycloalkyl group, tertbutyl group, 1-trimethylsiloxyalkyl group, tertbutyldimethylsilyl group or 1-alkoxyalkyl group. The subject matter of the invention is a new way of synthesis of new and already known silylsubstituted 1,2-alkynes of general formula 1, in which R1 and R2 specified above, in which an alkene of general formula 2, with R1 specified above is subjected to silylative coupling with a terminal alkynes of the general formula 3, with R2 specified above, in the presence of a catalyst.Type: ApplicationFiled: August 14, 2007Publication date: December 24, 2009Applicant: ADAM MICKIEWICZ UNIVERSITYInventors: Bogdan Marciniec, Beata Dudziec, Karol Szubert, Jedrzej Walkowiak
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Publication number: 20090208728Abstract: A surface modifier comprising an organosilicone compound represented by General Formula (A) and/or General Formula (B): F—(CF2)q—(OC3F6)m—(OC2F4)n—(OCF2)o(CH2)pX(CH2)rSi(X?)3-a(R1)a (A) and F—(CF2)q—(OC3F6)m—(OC2F4)n—(OCF2)o(CH2)pX(CH2)r(X?)2-a(R1)aSiO(F—(CF2)q—(OC3F6)m—(OC2F4)n—(OCF2)o(CH2)pX(CH2)r(X?)1-a(R1)aSiO)zF—(CF2)q—(OC3F6)m—(OC2F4)n—(OCF2)o(CH2)pX(CH2)r(X?)2-a(R1)aSi (B) wherein q is an integer from 1 to 3; m, n, and o are independently integers from 0 to 200; p is 1 or 2; X is O or a bivalent organic group; r is an integer from 2 to 20; R1 is a C1-22 linear or branched hydrocarbon group; a is an integer from 0 to 2; X? is hydrolysable group; and z is an integer from 0 to 10 when a is 0 or 1.Type: ApplicationFiled: March 30, 2006Publication date: August 20, 2009Applicants: DAIKIN INDUSTRIES, LTD., DOW CORNING CORPORATIONInventors: Yasuo Itami, Tetsuya Masutani, Peter C. Hupfield, Don Lee Kleyer
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Patent number: 7572927Abstract: A method of producing an o-disubstituted aromatic compound, containing: continuously conducting at least the following steps (a) to (d): (a) a step of mono-lithiating one halogen atom of an o-dihaloaromatic compound, using a first microreactor; (b) a step of making the thus-obtained monolithiated product to react with an electrophilic compound, using a second microreactor, to obtain a monosubstituted-monohaloaromatic compound; (c) a step of lithiating the other halogen atom of the o-dihaloaromatic compound, using a third microreactor; and (d) a step of making the thus-obtained lithiated product successively to react with an electrophilic compound, using a forth microreactor.Type: GrantFiled: March 12, 2007Date of Patent: August 11, 2009Assignee: Fujifilm CorporationInventors: Jun-ichi Yoshida, Aiichiro Nagaki, Toshiki Nokami
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Patent number: 7550620Abstract: The invention relates to a process for the direct synthesis of methylchlorosilanes by reaction of chloromethane with a contact composition comprising silicon and copper catalyst, wherein the concentration of oxygen in the chloromethane used is reduced by mixing a) chloromethane which contains oxygen, and b) chloromethane which contains a gaseous boron compound.Type: GrantFiled: September 18, 2007Date of Patent: June 23, 2009Assignee: Wacker Chemie AGInventors: Wilfried Kalchauer, Jochen Gross, Wolfgang Zoller
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Patent number: 7544827Abstract: Chemical vapor deposition processes result in films having low dielectric constants when suitable chemical precursors are utilized. Preferred chemical precursors include siloxanes, (fluoroalkyl)fluorosiloxanes, (fluoroalkyl)silanes, (alkyl)fluorosilanes, (fluoroalkyl)fluorosilanes, alkylsiloxysilanes, alkoxysilanes, alkylalkoxysilanes, silylmethanes, alkoxysilylmethanes, alkylalkoxysilylmethanes, alkoxymethanes, alkylalkoxymethanes, and mixtures thereof. The precursors are particularly suited to thermal CVD for producing low dielectric constant films at relatively low temperatures, particularly without the use of additional oxidizing agents. Such films are useful in the microelectronics industry.Type: GrantFiled: October 16, 2006Date of Patent: June 9, 2009Assignee: ASM Japan K.K.Inventor: Michael A. Todd
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Publication number: 20090030222Abstract: Systems and methods of functionalizing particulates are provided. A method of functionalizing particulates includes providing particulates to a reactor, fluidizing the particulates in substantial absence of solvents, providing a silane containing material to the fluidized particulates, and reacting the silane containing material with the fluidized particulates to provide silane-functionalized particulates. The silane-functionalized particulates may be utilized in separation media and other industrial applications.Type: ApplicationFiled: December 28, 2006Publication date: January 29, 2009Inventors: Gary Lee Gibson, Keith Quentin Hayes, Csilla Kollar, Anthong Revis, Raymond Lee Tabler
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Publication number: 20080275263Abstract: The invention relates to the preparation of organodialkylalkoxysilane using a continuous method consisting in bringing an alkanol into continuous contact with an omega-haloalkyl dialkylhalosilane in a countercurrent reactor, such as a plate column or a packed column. The reaction is performed in the aforementioned countercurrent reactor in the presence or absence of a non-reactive solvent with scavenging of the hydrochloric acid formed. The omega-haloalkyl dialkylalkoxysilane thus formed is particularly suitable for use as a starting material for the preparation of organosilicon compounds containing sulphur having general formula (I) by means of sulphidisation reaction on an alkaline metal polysulphide.Type: ApplicationFiled: April 7, 2008Publication date: November 6, 2008Applicant: RHODIA CHIMIEInventors: Kamel RAMDANI, Bernard Vogin, Nathalie Guennouni
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Publication number: 20080102013Abstract: The crude oil reserves have a time limit which may be calculated. Before the automobile industry, aviation, the weapons industry, and space travel change their combustion engines over to silanes, for example, hydrogen peroxide will preferably be used as an energy carrier. The hydrogen peroxide may be obtained especially advantageously from a power plant process according to the present invention, in which hydrocarbons contaminated with sulfur are used for combustion. The present invention also relates to a novel system for transporting/conveying hydrogen peroxide.Type: ApplicationFiled: July 11, 2007Publication date: May 1, 2008Applicant: SILICON FIRE AGInventor: Florian Krass
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Patent number: 7355060Abstract: By reducing an organosilane represented by the formula (1), SiXnR4-n??(1) (wherein X represents a halogen or alkoxide, n represents an integer of 1-3, and R represents an alkyl group or aryl group), there is produced a corresponding organosilane represented by the formula (2), SiHnR4-n??(2) (wherein n represents an integer of 1-3, and R represents an alkyl group or aryl group). In this production method, an aromatic hydrocarbon series organic solvent is used as a reaction solvent, and aluminum lithium hydride is used as a hydrogenating agent.Type: GrantFiled: November 9, 2004Date of Patent: April 8, 2008Assignee: Central Glass Company, LimitedInventors: Tsuyoshi Ogawa, Yoshihiro Muramatsu, Mitsuya Ohashi
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Publication number: 20080045737Abstract: The invention relates to a process for the continuous preparation of organosilanes in a reactive distillation column, wherein a homogenous hydrosilylation catalyst is introduced into the column.Type: ApplicationFiled: August 20, 2007Publication date: February 21, 2008Applicant: WACKER CHEMIE AGInventors: Gilbert Geisberger, Marco Auer, Armin Groessmann
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Patent number: 7262314Abstract: A method for preparation of an iodoalkylalkoxysilane includes contacting a haloalkylmethoxysilane with an alcohol in the presence of a protic acid to form a haloalkylalkoxysilane. The haloalkylalkoxysilane is contacted with an iodide to form the iodoalkylalkoxysilane. The iodoalkylalkoxysilane can be used as a chemical intermediate in the preparation of functional aryl amine molecules which have application in the formation of thin films for photoreceptors.Type: GrantFiled: July 7, 2004Date of Patent: August 28, 2007Assignee: Xerox CorporationInventors: Timothy P. Bender, Nan-Xing Hu
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Patent number: 7220813Abstract: A process for synthesizing photocurable poly(ethynyl) carbosilane includes the steps of mixing dichlorosilane and trichlorosilane reagents, adding sub-stoichiometric amounts of alkali metal and adding excess sodium acetylide.Type: GrantFiled: February 13, 2001Date of Patent: May 22, 2007Assignee: Global Strategic Materials LLCInventors: Edward J. A. Pope, Kenneth M. Kratsch
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Patent number: 7081543Abstract: The present invention relates to ligands and the synthesis of those ligands for use in metallocene complexes. More particularly, the present invention relates to the synthesis of diarylsilyl bridged biscyclopentadienes using diarylsilyldisulfonates. Even more particularly, the present invention describes Group IV metallocenes containing diarylsilyl bridged bis-cyclopentadienyl ligands prepared from contacting a diarylsilyldisulfonate with an organometallic indenyl reagent.Type: GrantFiled: July 13, 2005Date of Patent: July 25, 2006Assignee: ExxonMobil Chemical Patents Inc.Inventors: Francis C. Rix, Terry J. Burkhardt, Robert T. Li, William T. Haygood, Jr.
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Patent number: 7070886Abstract: Disclosed is a holographic recording medium. The novel holographic recording mediums disclosed herein comprises: a) at least one polyfunctional epoxide monomer or oligomer which undergoes acid initiated cationic polymerization. Each epoxide in the monomer or oligomer is linked by group comprising a siloxane to a silicon atom and each monomer or oligomer has an epoxy equivalent weight of greater than about 300 grams/mole epoxide; b) a binder which is capable of supporting cationic polymerization; c) an acid generator capable of producing an acid upon exposure to actinic radiation; and optionally d) a sensitizer.Type: GrantFiled: July 13, 2004Date of Patent: July 4, 2006Assignee: Aprilis, Inc.Inventors: Erdem A. Cetin, Richard A. Minns, David A. Waldman
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Patent number: 6960676Abstract: The present invention relates to ligands and the synthesis of those ligands for use in metallocene complexes. More particularly, the present invention relates to the synthesis of diarylsilyl bridged biscyclopentadienes using diarylsilyldisulfonates. Even more particularly, the present invention describes Group IV metallocenes containing diarylsilyl bridged bis-cyclopentadienyl ligands prepared from contacting a diarylsilyldisulfonate with an organometallic indenyl reagent.Type: GrantFiled: February 8, 2001Date of Patent: November 1, 2005Assignee: ExxonMobil Chemical Patents Inc.Inventors: Francis C. Rix, Terry J. Burkhardt, Robert T. Li, William T. Haygood, Jr.
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Patent number: 6958408Abstract: The invention concerns ligands with at least a fluorosilicone substituent of general formulae (I) and (II); a method for preparing them and their use for producing catalysts useful for olefin polymerisationType: GrantFiled: August 2, 2001Date of Patent: October 25, 2005Assignee: Total Petrochemicals FranceInventors: Virginie Cheron, Jean-Luc Couturier, Hendrik Hagen, Gerard Van Koten, Berth Jan Deelman
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Patent number: 6888002Abstract: The invention relates to novel transition metal complexes containing at least one diaminocarbene ligand, to processes for preparing these transition metal complexes and to their use as catalysts in organic reactions.Type: GrantFiled: September 30, 2002Date of Patent: May 3, 2005Assignee: Bayer AktiengesellschaftInventors: Wolfgang A. Herrmann, Karin Denk
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Patent number: 6841498Abstract: Disclosed is a new titanium based catalyst system for (co)-polymerizing ethylene or ethylene with alpha-olefin having 3 to 10 carbons. The catalyst is obtained by contacting a magnesium halide support with an aluminum compound and with a titanium halide compound and then treating the resulting solid with a magnesium-amide complex. The catalyst system is suitable for producing ethylene polymer and co-polymer with narrow molecular weight distribution as well as improved branching compositional distribution.Type: GrantFiled: February 12, 2003Date of Patent: January 11, 2005Assignee: Formosa Plastic Corporation, U.S.A.Inventors: Gapgoung Kong, Zhongyang Liu, Honglan Lu
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Patent number: 6831189Abstract: A method comprises reacting a compound of the general formula R14-mMOR3m wherein m is an integer from 2 to 4, R1 is selected from alkyl, alkenyl, aryl, alkynyl or epoxy, and wherein R1 is nonfluorinated, or fully or partially fluorinated; OR3 is alkoxy; and M is an element selected from group 14 of the periodic table; with a compound of the general formula R2M1 wherein R2 is selected from alkyl, alkenyl, aryl, alkynyl or epoxy, and wherein R2 is at least partially fluorinated; and M1 is an element from group I of the periodic table; so as to make a compound of the general formula R14-mMOR3m-1R2.Type: GrantFiled: January 8, 2002Date of Patent: December 14, 2004Assignee: Silecs OyInventors: Juha A. Rantala, Arto L. T. Maaninen, Tiina J. Maaninen, Jarkko J. Pietikainen
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Patent number: 6828404Abstract: A process for the preparation of an alkoxysilyl siloxane substituted with at least one epoxy, vinyl ether, 1-propenyl ether, acrylate or methacrylate group comprises selectively reacting a hydrosilane compound with a compound containing a vinyl or allyl group and a epoxy, vinyl ether, 1-propenyl ether, acrylate or methacrylate group, or a compound containing at least one vinyl or allyl group and at least one dialkoxysilyl or trialkoxysilyl group, to form at least one monohydrosiloxane. The monohydrosiloxane is further reacted to form an ambifunctional alkoxysilyl siloxane.Type: GrantFiled: October 19, 2001Date of Patent: December 7, 2004Assignee: Rensselaer Polytechnic InstituteInventor: James Vincent Crivello
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Patent number: 6809213Abstract: A highly efficient method is provided for preparing secondary aminoisobutylalkoxysilanes by reacting hydridoalkoxysilanes with secondary methallylamines in the presence of a hydrosilation catalyst.Type: GrantFiled: May 1, 2001Date of Patent: October 26, 2004Assignee: General Electric CompanyInventors: R. Shawn Childress, Michelle A. Filipkowski, Curtis L. Schilling, Jr.
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Patent number: 6803477Abstract: An efficient method is disclosed for the preparation of trifluoromethyl- and difluoromethylsilanes using magnesium metal mediated reductive tri- and difluoromethylation of chlorosilanes with tri- and difluoromethyl sulfides, sulfoxides, and sulfones. One byproduct of the process is diphenyl disulfide. Since phenyl trifluoromethyl sulfone, sulfoxide and sulfide are readily prepared from readily available trifluoromethane and diphenyl disulfide, the method can be considered “pseudo-catalytic” for the preparation of (trifluoromethyl)trimethylsilane from environmentally benign trifluoromethane.Type: GrantFiled: November 27, 2002Date of Patent: October 12, 2004Assignee: University of Southern CaliforniaInventors: G. K. Surya Prakash, Jinbo Hu, George A. Olah
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Patent number: 6610871Abstract: An allylic compound is reacted with an organozinc compound Zn(R6)2 to eliminate a group (the leaving group) from the allylic compound and to add a group from the organozinc compound to it in the presence of a copper salt catalyst and a chiral organic ligand for the copper. A novel ferrocenyl compound and a novel copper complex of the ferrocenyl compound and copper are also described.Type: GrantFiled: May 3, 2001Date of Patent: August 26, 2003Assignee: Avecia LimitedInventors: Frank Duebner, Paul Knochel
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Publication number: 20030130536Abstract: Disclosed is method for increasing the efficiency of a dirhodium catalyst. The method includes providing a dirhodium catalyst, providing an organic ester, and contacting the dirhodium catalyst and the organic ester under conditions effective to increase the efficiency of the dirhodium catalyst. The organic ester is selected such that it is not a substrate for catalysis by the dirhodium catalyst. Dirhodium catalyst compositions which include a dirhodium catalyst and an organic ester are also disclosed. In these compositions, the organic ester is not a substrate for catalysis by the dirhodium catalyst. The method and compositions can be used in a number of reactions, including insertion reactions (e.g., C—H insertions, Si—H insertions, O—H insertions, and N—H insertions) cyclopropanation reactions, annulations (e.g., [3+2] annulations and [3+4] annulations), and &ohgr;,&ohgr;-diarylalkanoate syntheses.Type: ApplicationFiled: August 27, 2002Publication date: July 10, 2003Inventor: Huw M. L. Davies
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Patent number: 6506868Abstract: The present invention provides a partial condensate of glycidyl ether group-containing alkoxysilane which is obtainable by dealcoholization reaction between glycidol and a partial condensate of alkoxysilane, compositions comprising the same and preparation methods thereof. Further, the present invention provides an alkoxy-containing silane-modified polyimide resin, alkoxy-containing silane-modified polyamide-imide resin and alkoxy-containing silane-modified phenol resin which are modified with the partial condensate of glycidyl ether group-containing alkoxysilane, and preparation methods thereof.Type: GrantFiled: March 7, 2001Date of Patent: January 14, 2003Assignee: Arakawa Chemical Industries, Ltd.Inventors: Hideki Goda, Shoji Takeda, Tetsuji Higashino
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Patent number: 6500414Abstract: The present invention relates to a process for protecting hair and skin from the deleterious effects of ultra violet radiation using topical applications of a novel dimethicone copolyol compounds bearing ultra violet absorbing substituents.Type: GrantFiled: August 22, 2001Date of Patent: December 31, 2002Assignee: Siltech LLCInventor: Anthony J. O'Lenick, Jr.
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Patent number: 6489501Abstract: A method for forming at least one product silane, comprising reacting a transition metal hydride with a starting silane in a presence of a catalyst and at a temperature that exceeds a threshold temperature associated with said reacting.Type: GrantFiled: February 26, 2001Date of Patent: December 3, 2002Assignee: General Electric CompanyInventor: Florian Johannes Schattenmann
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Patent number: 6455721Abstract: A method for the preparation of organyltriorganooxysilanes containing at least one silicon-carbon bond is provided comprising reacting at least one tetraorganooxysilane with an activated carbon and at least one base.Type: GrantFiled: September 14, 2001Date of Patent: September 24, 2002Assignee: General Electric CompanyInventor: Florian Johannes Schattenmann
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Publication number: 20020082438Abstract: The present invention relates to a process for preparing organochlorosilanes and more particularly, to the process for preparing organochlorosilanes of formula I by a dehydrohalogenative coupling of hydrochlorosilanes of formula II with organic halides of formula III in the presence of quaternary phosphonium salt as a catalyst to provide better economical matter and yield compared with conventional methods, because only catalytic amount of phosphonium chloride is required and the catalyst can be separated from the reaction mixture and recycled easily, 1Type: ApplicationFiled: August 1, 2001Publication date: June 27, 2002Inventors: Il-Nam Jung, Bok-Ryul Yoo, Joon-Soo Han, Seung-Hyun Kang
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Patent number: 6410770Abstract: This invention includes a process for producing an alkylsilane, comprising reducing an alkoxysilane in the presence of an alkali metal hydride in the presence of a high boiling solvent. The alkylsilane has a boiling point lower than the boiling point of the solvent, which is typically diglyme. This invention also includes a chloride-free alkylsilane formed from the reduction of an alkoxysilane in the presence of an alkali metal hydride. The alkylsilane produced according to the process of the present invention may be useful in microelectronic applications, such as in the production of chloride-free low dielectric constant materials which may be produced by the chemical vapor deposition of such silanes.Type: GrantFiled: February 7, 2001Date of Patent: June 25, 2002Assignee: Gelest, Inc.Inventors: Barry C. Arkles, Youlin Pan, Gerald Larson
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Patent number: 6403750Abstract: A process for fabricating ceramic composites employs a thermoplastic photo-curable pre-ceramic polymer in which the component is shape by a variety of standard composite fabrication techniques, such as filament winding, tape winding, and woven cloth winding. The process includes steps of passing ceramic fiber monofilament, tow, mat, or woven cloth through a solution of said thermoplastic photo-curable pre-ceramic polymer, applying ceramic fiber monofilament, tow, mat, or woven cloth to a moving flat substrate, using a compaction roller to press the thermoplastic pre-ceramic polymer coated ceramic fiber onto flat substrate, using photo-light of the ultraviolet, visible, or infrared light spectrum to induce cross-linking (curing) of the photo-curable pre-ceramic polymer thereby rendering a thermoset polymer and either partially or completely pyrolyzing the now cured pre-ceramic polymer matrix coated ceramic fiber material.Type: GrantFiled: June 3, 1999Date of Patent: June 11, 2002Inventors: Edward J. A. Pope, Kenneth M. Kratsch
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Patent number: 6380415Abstract: A process for producing an octafluoro[2,2]paracyclophane includes the steps of (a) reacting 1,4-bis(trifluoromethyl)benzene with a halogenated silane represented by the general formula (1), in the presence of a low valence metal, thereby obtaining a novel compound (precursor) represented by the general formula (2); and (b) conducting in the presence of a fluoride ion a dimerization of the compound into the octafluoro[2,2]paracyclophane, R3SiX (1) where each R is independently an alkyl group or aryl group, and X is a halogen atom, where R is defined as above. It is possible to produce octafluoro[2,2]paracyclophane with a high yield from 1,4-bis(trifluoromethyl)benzene, which is easily available, via the above compound.Type: GrantFiled: February 14, 2001Date of Patent: April 30, 2002Assignee: Central Glass Company, LimitedInventors: Kenji Uneyama, Hideki Amii
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Patent number: 6358574Abstract: Crosslinkable LC organosiloxanes exhibiting excellent UV stability, contain units of the general formula 1 [RbMescSiO(4−b−c)/2] (1) in which R are C1-C4-alkyl radicals, Mes is at least one group of the general formula 2 and, if desired, of the general formula 3, b has the value 0, 1 or 2, and c has the value 0, 1, 2, 3 or 4, with the proviso that the sum of the values of b and c is a maximum of 4, where the Mes groups of the general formulae 2 and 3 exhibit the following structure: —(CH2)p—(O)q—A—[B—A]r—E—F—VN (2) —(CH2)m—(O)n—(A)t—Q—X (3) in which A, B, Q, X, E, F, VN, m, p, n, q, t and r have the meanings given in claim 1, with the proviso that the LC organosiloxanes do not constitute a phenyl ester derivative of an aliphatic, aromatic or heteroaromatic carboxylic acids.Type: GrantFiled: December 6, 1999Date of Patent: March 19, 2002Assignee: Consortium fur Elektrochemische Industrie GmbHInventors: Norman Häberle, Jürgen Küpfer, Horst Leigeber
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Publication number: 20020022734Abstract: The invention relates to the preparation and use of polyfluoro-alkylsilanes of formula (I) 1Type: ApplicationFiled: June 29, 2001Publication date: February 21, 2002Inventors: Albrecht Marhold, Jurgen Wiedemann, Sebastian Bach
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Patent number: 6346595Abstract: The present invention relates to novel dimethicone copolyol compounds bearing ultra violet absorbing substituents. This invention also relates to compositions of matter, in particular cosmetic compositions, comprising the above novel compounds, which are especially well suited for the photoprotection of the skin and/or the hair against the deleterious effects of UV radiation, in particular solar radiation.Type: GrantFiled: July 7, 2000Date of Patent: February 12, 2002Assignee: Siltech LLCInventor: Anthony J. O'Lenick, Jr.
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Publication number: 20020002299Abstract: This invention includes a process for producing an alkylsilane, comprising reducing an alkoxysilane in the presence of an alkali metal hydride in the presence of a high boiling solvent. The alkylsilane has a boiling point lower than the boiling point of the solvent, which is typically diglyme. This invention also includes a chloride-free alkylsilane formed from the reduction of an alkoxysilane in the presence of an alkali metal hydride. The alkylsilane produced according to the process of the present invention may be useful in microelectronic applications, such as in the production of chloride-free low dielectric constant materials which may be produced by the chemical vapor deposition of such silanes.Type: ApplicationFiled: February 7, 2001Publication date: January 3, 2002Applicant: Gelest, Inc.Inventors: Barry Arkles, Youlin Pan, Gerald Larson
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Publication number: 20010053861Abstract: A halopropyldimethylchlorosilane is prepared by reacting dimethylchlorosilane with an allyl halide in the presence of an iridium catalyst. The reaction is effected in the presence of an internal olefin compound, typically 1,5-cyclooctadiene. The internal olefin compound suppresses deactivation of the iridium catalyst during reaction. Using a smaller amount of the iridium catalyst, the process produces the halopropyldimethylchlorosilane in high yields.Type: ApplicationFiled: May 11, 2001Publication date: December 20, 2001Inventors: Yoichi Tonomura, Tohru Kubota, Mikio Endo
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Publication number: 20010044561Abstract: A process for producing an octafluoro[2,2]paracyclophane includes the steps of (a) reacting 1,4-bis(trifluoromethyl)benzene with a halogenated silane represented by the general formula (1), in the presence of a low valence metal, thereby obtaining a novel compound (precursor) represented by the general formula (2); and (b) conducting in the presence of a fluoride ion a dimerization of the compound into the octafluoro[2,2]paracyclophane,Type: ApplicationFiled: February 14, 2001Publication date: November 22, 2001Inventors: Kenji Uneyama, Hideki Amii
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Patent number: 6258971Abstract: A method for the preparation of organooxysilanes containing at least one silicon-carbon bond is provided which comprises reaction of at least one tetraorganooxysilane with at least one metal hydride.Type: GrantFiled: August 17, 2000Date of Patent: July 10, 2001Assignee: General Electric CompanyInventor: Florian Johannes Schattenmann
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Patent number: 6258914Abstract: Alkoxy silane oligomers which have a non-hydrolyzable carbon bridged bond to another silane functionality are taught herein, as well as their manufacture and utility.Type: GrantFiled: October 15, 1999Date of Patent: July 10, 2001Assignee: C. K. Witco CorporationInventors: Shiu-Chin Huang Su, Herbert E. Petty, Fredrick D. Osterholtz