Two Silicons Bonded Directly To The Same Acyclic Saturated Hydrocarbon Patents (Class 556/435)
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Patent number: 5128494Abstract: A method is provided for preparing preceramic polymers and silicious ceramic materials which derive therefrom. The preceramic polymers are polysiloxanes which are synthesized by catalytically activating Si-H bonds in a hydridosiloxane starting material and replacing the activated hydrogen atoms with non-hydrogen substituents. These preceramic polysiloxanes are pyrolyzed in a selected atmosphere to give the desired ceramic product. Ceramic products which may be prepared by this technique include silica, silicon oxynitride, silicon carbide, and metal silicates.Type: GrantFiled: April 21, 1989Date of Patent: July 7, 1992Assignee: SRI InternationalInventor: Yigal Blum
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Patent number: 5117026Abstract: The synthesis and use of a fluorine-containing organic silicon compound represented by: ##STR1## wherein each R.sup.1 independently represents a monovalent hydrocarbon group of 1-10 carbon atoms, and each R.sup.2 independently represents a monovalent hydrocarbon group of 1-10 carbon atoms or a CH.sub.2 CH.sub.2 Rf group, such that at least one R.sup.2 is CH.sub.2 CH.sub.2 Rf, wherein Rf is a perfluoroalkyl group of 1-10 carbon atoms; the compounds of formula (I) are useful in the preparation of fluorine-containing polysilethylenesiloxanes having excellent solvent-resisting and surface-lubricating properties.Type: GrantFiled: July 1, 1991Date of Patent: May 26, 1992Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Hirofumi Kishita, Kouichi Yamaguchi, Hideki Fujii, Shuji Suganuma, Yoshikazu Saito, Shinichi Sato, Kenichi Fukuda, Nobuyuki Kobayashi
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Patent number: 5082962Abstract: Novel silanes having sterically hindered aminohydrocarbyl groups of the formula X.sub.3 SiRCR'.sub.2 NR".sub.2 and having utility as coupling agents and a process for their preparation are described.Type: GrantFiled: February 6, 1991Date of Patent: January 21, 1992Assignee: Union Carbide Chemicals and Plastics Technology CorporationInventor: Curtis L. Schilling, Jr.
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Patent number: 5075477Abstract: A novel and improved method for simultaneously producing 2,4,6-trisilaheptane of the following formula (I) and 1,3-disilabutane of the following formula (II), which are the starting material essential for forming silicon polymers: wherein, R is methyl group or chloro group. ##STR1## The method is characterized by reacting silicon and chloromethylsilanes of the following formula (III) at 250.degree. C.-350.degree. C. and in the presence of copper as a catalyst, exclusively or together with cadmium powder as a co-catalyst.Type: GrantFiled: May 8, 1991Date of Patent: December 24, 1991Assignee: Korea Institute of Science and TechnologyInventors: Il Nam Jung, Gyu-Hwan Lee, Seung Ho Yeon, Mi-Yeon Suk
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Patent number: 5072012Abstract: Novel alkoxysilanes of the general formula: ##STR1## wherein letter a is equal to 2 or 3, b is equal to 0, 1, 2 or 3, and n is an integer of from 2 to 10 are useful agents for controlling curing reaction of addition type curable silicone compositions.Type: GrantFiled: May 31, 1991Date of Patent: December 10, 1991Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Hironao Fujiki, Toshiaki Takahashi
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Patent number: 5041587Abstract: A process for preparing an organic silicon compound is here disclosed which comprises the step of reacting a halogenated hydrocarbon selected from the group consisting ##STR1## wherein each of X.sup.1 to X.sup.16 is selected from the group consisting of hydrogen, an alkyl group, alkenyl group, phenyl group, naphthyl group, alkoxy group, acyl group, alkylamino group and dialkylamino group having 1 to 20 carbon atoms which are unsubstituted or substituted and a halogen atom; and each of at least one of X.sup.1 to X.sup.4, at least one of X.sup.8 to X.sup.10 and at least one of X.sup.11 to X.sup.16 is a halogen atom,with a silane selected from the group consisting of SiH.sub.4, Si.sub.2 H.sub.6 and Si.sub.3 H.sub.8.Type: GrantFiled: February 12, 1990Date of Patent: August 20, 1991Assignee: Mitsui Toatsu Chemicals, Inc.Inventors: Masayoshi Itoh, Kenji Iwata, Noriyuki Yanagawa, Tetsura Utsumi, Mineo Kobayashi, Ryo Takeuchi, Tomohiro Abe
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Patent number: 5026891Abstract: Surface active silicone compounds which have an improved stability at a pH above 9 or below 4, have the general formula ##STR1## wherein each R independently represents an alkyl or aryl group, each R' represents an alkylene group preferably separating neighbouring silicon atoms by up to 3 carbon atoms, each R" independently denotes R or, only if a is 0, the group R.sub.3 SiR'--, Z represents a hydrophilic sulphur, nitrogen or phosphor containing substituent or a carboxy-functional group or a salt thereof, and a has the value 0, 1 or 2.Type: GrantFiled: July 28, 1989Date of Patent: June 25, 1991Assignee: Dow Corning LimitedInventors: Andre R. L. Colas, Franck A. D. Renauld, George C. Sawicki
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Patent number: 5026893Abstract: Polysilahydrocarbons, such as tetrasilanes, are prepared by reaction of alkenyl organometallic compounds with alkyltrihalosilanes, followed by further reaction of the alkyltrialkenylsilane intermediates with trihalosilane and the subsequent substitution of the halogen atoms in the second intermediate by alkyl groups.Type: GrantFiled: June 11, 1990Date of Patent: June 25, 1991Assignee: Lubricating Specialties CompanyInventors: Kazimiera J. L. Paciorek, Joseph G. Shih, Bruce B. Randolph, Carl E. Snyder, Jr.
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Patent number: 5006584Abstract: A polymer is disclosed that is useful in increasing the viscosity of carbon dioxide. That polymer comprises a polydialkylsilalkylene polymer; wherein the dialkyl group is preferably dimethyl, methylethyl, or diethyl; and the alkylene group is preferably ethylene or methylene. Preferably, the polymer is polydimethylsilalkylene. That polymer can be used in a method for recovering oil from an underground oil-bearing earth formation penetrated by an injection well and a producing well, in which method carbon dioxide is injected into the formation to displace oil towards the producing well from which oil is produced to the surface. The viscosity of the carbon dioxide injected into the formation is increased at least three-fold by the presence of a sufficient amount of the polydialkylsilalkylene polymer and a sufficient amount of a cosolvent to form a solution of the polymer in the carbon dioxide.Type: GrantFiled: February 22, 1990Date of Patent: April 9, 1991Assignee: Chevron Research and Technology CompanyInventor: Bruce W. Davis
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Patent number: 4985576Abstract: A bisindenyl derivate of the formula I ##STR1## (M.sup.1 =Si or Ge, R.sup.6 and R.sup.7 =unsubstituted or substituted idenyl radical)is obtained in very good yield by reacting a compound of the formula II ##STR2## (X=halogen) with a compound of the formula III or IVR.sup.6 -M.sup.2 (III) R.sup.7 -M.sup.2 (IV)(M.sup.2 =alkali metal)if, in the reaction, compound III or IV is added slowly to compound II.Compound I is suitable as a starting material for the preparation of metallocene catalyst components.Type: GrantFiled: December 29, 1989Date of Patent: January 15, 1991Assignee: Hoechst AktiengesellschaftInventors: Jurgen Rohrmann, Martin Antberg
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Patent number: 4918197Abstract: A method is provided for silylating aromatic acylhalide by effecting reaction between an aromatic acylhalide and halogenated polysilane in the presence of an effective amount of a supported transition metal catalyst, such as a transition metal catalyst supported by an organic or inorganic substrate.Type: GrantFiled: August 15, 1988Date of Patent: April 17, 1990Assignee: General Electric CompanyInventors: Jonathan D. Rich, Terry E. Krafft, Philip J. McDermott
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Patent number: 4861901Abstract: A new group of silane compounds in which silicon atoms are linked together by a hydrocarbon chain and which comprise phenyl groups substituted with an epoxy group or an ethenyl group. The compounds of the present invention have the formula ##STR1## where R.sub.1 is selected from the group consisting of:(a) an aliphatic hydrocarbon group containing 2 to 10 carbon atoms, and(b) a group having the formula ##STR2## where n=1 to 3m=0 to 5;R.sub.2 and R.sub.2 ' are each selected from the group consisting of an alkyl group containing 1 to 4 carbon atoms, an unsubstituted aryl group, and a substituted aryl group;and R.sub.3 is selected from the group consisting of: ##STR3## where R.sub.4, R.sub.5, and R.sub.6 are each selected from the group consisting of H, an alkyl group containing 1 to 4 carbon atoms, and an aryl group; and n=0 to 10.Type: GrantFiled: May 5, 1987Date of Patent: August 29, 1989Assignee: Hughes Aircraft CompanyInventors: Kreisler S. Y. Lau, Susan L. Oldham, William E. Elias, Stephen J. Bigus
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Patent number: 4826892Abstract: A new polycarbosilastyrene copolymer which comprises recurring carbosilane units of the formula I: ##STR1## and recurring silastyrene units of the formula II: ##STR2## and having easy shaping and sintering properties, is produced by ultra-violet ray treatment and/or heat treatment of a polysilastyrene material and is useful for producing a shaped sintered silicon carbide article by shaping the polycarbosilastyrene copolymer to a desired form, by applying an ultra-violet ray treatment or heat treatment to the shaped article, and by sintering the resultant corss-linked, non-fusible shaped article at an elevated temperature.Type: GrantFiled: April 30, 1987Date of Patent: May 2, 1989Assignee: Teijin LimitedInventors: Keizo Shimada, Toshihiro Aoyama, Hidetsugu Yoshida
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Patent number: 4801725Abstract: An organosilicon compound represented by General Formula (I): ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 may be the same or different, and each represent a substituted or unsubstituted monovalent hydrocarbon group, x and y each represent an integer of 1 to 3, and n is an integer of 0 or more.This compound is useful as a starting material for ultraviolet curable silicone compositions and room temperature curable silicone compositions.Type: GrantFiled: September 2, 1987Date of Patent: January 31, 1989Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Masatoshi Arai, Shinichi Satoh, Kazutoshi Fujioka
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Patent number: 4792591Abstract: A process for reducing the halogen content of polycarbosilanes and/or polysilanes containing halogen bonded directly to silicon atoms by reacting the polymers with hexamethyldisilazane.Type: GrantFiled: May 19, 1987Date of Patent: December 20, 1988Assignee: Wacker-Chemie GmbHInventors: Alfred Rengstl, Andrea Schmidhuber
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Patent number: 4788311Abstract: Novel organosilicon compounds of the following general formula ##STR1## in which R.sup.1 and R.sup.2 independently represent an unsubstituted or substituted monovalent hydrocarbon group having from 1 to 8 carbon atoms, R.sup.3 and R.sup.4 independently represent a hydrogen atom or have the same meaning as R.sup.1 and R.sup.2, X has the same meaning as R.sup.1 or is a group of the following formula ##STR2## in which R.sup.3 and R.sup.4 have, respectively, the same meanings as defined above, l and m are, respectively, 0, 1 or 2, and n is an integer of from 2 to 8.Type: GrantFiled: February 4, 1988Date of Patent: November 29, 1988Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Yoshio Inoue, Takeo Inoue
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Patent number: 4788312Abstract: Trisilahydrocarbon synthetic lubricant base stocks are prepared by the reaction of dienes containing four to sixteen carbon atoms with dihalosilanes, followed by further reaction of the bis(alkenyl)dihalosilane intermediates with trihalosilanes or trialkylsilanes, followed by substitution of the halogen atoms in the second intermediates by organometallic compounds or by hydridometallic compounds plus olefins.Type: GrantFiled: March 16, 1988Date of Patent: November 29, 1988Assignee: Technolube Division Lubricating Specialties Co.Inventors: Kazimiera J. L. Paciorek, Robert E. Pratt, Joseph G. Shih
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Patent number: 4783516Abstract: This invention is concerned with novel polysilanes containing olefinic groups which are prepared by reactions of halogen-containing organosilane monomers or mixtures thereof with sodium metal in an appropriate solvent or mixture of solvents. Such polysilane polymers are soluble and thermoplastic, and can be directly converted to silicon carbide compositions by pyrolysis at atmospheric pressure.Type: GrantFiled: November 22, 1983Date of Patent: November 8, 1988Assignee: Union Carbide CorporationInventors: Curtis L. Schilling, Jr., Bernard Kanner
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Patent number: 4778908Abstract: The present invention relates to a process for preparing disilylmethanes, wherein the magnesian reaction is carried out between methylene chloride and at least one chlorosilane in a donor solvent.Type: GrantFiled: May 29, 1987Date of Patent: October 18, 1988Assignee: Societe Europenne de PropulsionInventors: Jean-Paul Pillot, Claude Biran, Eric Bacque, Paulette Lapouyade, Jacques Dunogues, Pierre Olry
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Patent number: 4775415Abstract: An alcohol-based composition inhibited against high temperature aluminum cavitation erosion corrosion characterized by the presence of a polysilyl compound of the formula: ##STR1## wherein R is a substituted or unsubstituted organic radical; R.sup.1 is selected from the group consisting of hydrogen, monovalent hydrocarbon radicals and substituted monovalent hydrocarbon radicals; R.sup.2 is a monovalent moiety hydrolyzable to a hydroxyl group, each R.sup.2 being the same or different; a is an integer from 2 to 4, inclusive; b is an integer having a value of 0 or 1; n is an integer from 1 to 36, inclusive; and c is an integer having a value of 0 or 1; each ##STR2## group being the same or different, with the provisio that the compound have at least one ##STR3## group.Type: GrantFiled: August 6, 1986Date of Patent: October 4, 1988Assignee: First Brands CorporationInventors: Paul H. Mohr, Enrico J. Pepe
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Patent number: 4772675Abstract: The method of this invention produces an elastomeric silicone sealant having an improved shelf life. The sealant comprises an alkoxysilethylene ended polydiorganosiloxane polymer, an alkoxytrialkoxysilane crosslinker, and a titanium catalyst.Type: GrantFiled: January 28, 1988Date of Patent: September 20, 1988Assignee: Dow Corning CorporationInventors: Jerome M. Klosowski, Michael D. Meddaugh
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Patent number: 4761458Abstract: Halogenated polycarbosilanes are prepared by reacting a polycarbosilane containing at least 0.1 weight percent Si-H groups with a halogenating reagent selected from the group consisting of chlorine, bromine, phosphorous pentachloride, phosphorous pentabromide, antimony pentachloride, N-chlorosuccinimide, N-bromosuccinimide, sulfonyl chloride, and mixtures of CH.sub.e X.sub.f and a free radical initiator where e is 0 or 1, f is 3 or 4, the sum (e+f) is 4, and X is chlorine or bromine. The halogenated polycarbosilanes can be further treated to produce other derivatized polycarbosilanes. The halogenated and derivatized polycarbosilanes can be converted to silicon carbide-containing ceramic materials by pyrolysis at elevated temperatures under an inert atmosphere.Type: GrantFiled: August 17, 1987Date of Patent: August 2, 1988Assignee: Dow Corning CorporationInventors: Gary T. Burns, Paul P. Lu, Gregg A. Zank
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Patent number: 4746751Abstract: The preparation of particular fluorescent silane dye compositions is disclosed. These silane dye compositions have particular utility as reactants in the preparation of silicone polymeric fluorescent dyes which can be ideally used as chemical indicators in biological sensors.Type: GrantFiled: May 7, 1987Date of Patent: May 24, 1988Assignee: Baxter Travenol Laboratories, Inc.Inventors: Henry W. Oviatt, Jr., Cary J. Reich
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Patent number: 4709054Abstract: A method is provided for silylating organic substrates, utilizing a halogenated polysilane, such as 1,1,2,2-tetrachloro dimethyldisilane and an aromatic acyl halide, for example, trimellitic anhydride acid chloride in the presence of a transition metal catalyst.Type: GrantFiled: August 13, 1985Date of Patent: November 24, 1987Assignee: General Electric CompanyInventor: Jonathan D. Rich
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Patent number: 4602050Abstract: A method for cross-linking organopolysilane polymers. The method includes the steps of mixing an organopolysilane with a cross-linking agent to make a reaction mixture. The cross-linking agent includes molecules having at least two carbon-carbon double bonds and a ratio of such bonds to the molecular weight of the molecule of at least 1:150. Radical formation is then induced in the organopolysilane of the reaction mixture to cause formation of a reaction product including cross-linked organopolysilane polymers.Type: GrantFiled: April 8, 1985Date of Patent: July 22, 1986Assignee: Wisconsin Alumni Research FoundationInventors: Robert C. West, Peter I. Djurovich
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Patent number: 4590253Abstract: An organosilicon polymer whose main-chain skeleton is composed mainly of following structural units (A), (B), (C), (D), (E) and (F) ##STR1## wherein R represents CH.sub.3 or H, said structural units forming linear, branched and cyclic structures, and said main-chain skeleton further having a polysilane skeleton ##STR2## (2.ltoreq.n.ltoreq.10). The said organosilicon polymer can be produced by adding at least one anhydrous metal halide to a polysilane having the structure ##STR3## the amount of the metal halide being 0.5 to 10% by weight based on the weight of the polysilane; and heating the mixture in an atmosphere inert to the reaction.Type: GrantFiled: January 18, 1985Date of Patent: May 20, 1986Assignees: Kurosaki Refractoris Co., Ltd., The Foundation: The Research Institute for Special Inorganic MaterialsInventors: Yoshio Hasegawa, Takeo Kobori, Kazushige Fukuda
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Patent number: 4539417Abstract: The invention provides a novel organosilicon compound poly(dimethylsilmethylene) methylacetylene compound of the formula MeC.tbd.C--SiMe.sub.2 --CH.sub.2 --SiMe.sub.2).sub.n Me, in which Me is a methyl group and n is a positive integer of 1 to 25. The compound is synthesized by reacting a propynylmagnesium halide of the formula MeC.tbd.CMgX, in which X is a halogen atom, or (propynyl dimethylsilyl)methylmagnesium chloride of the formula MeC.tbd.C--SiMe.sub.2 --CH.sub.2 MgCl with chloromethyl dimethyl chlorosilane in the presence of metallic magnesium and hydrolyzing the reaction product. Specifically, 1-propynyl-1,1,3,3,3-pentamethyl disilmethylene, i.e. the inventive compound with n=1, is synthesized by reacting (propynyl dimethylsilyl)methylmagnesium chloride with trimethyl chlorosilane.Type: GrantFiled: October 9, 1984Date of Patent: September 3, 1985Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Minoru Takamizawa, Akira Yamamoto, Toshinobu Ishihara, Mistuyoshi Ohshima
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Patent number: 4501911Abstract: Organosilicon-modified polydienes having the formula: ##STR1## in which Z represents a chain terminating group,R.sup.1 is a hydrogen or methyl radical,R.sup.2, R.sup.3, and R.sup.4 are lower alkyl radicals with 1 to 4 carbon atoms, which can be the same or different within the polymeric molecule,R.sup.5 is a methyl radical or the O--(R.sup.8 O--).sub.s --R.sup.4 group;R.sup.6, R.sup.7, R.sup.8 are alkylene radicals with 2 to 4 carbon atoms,C:O ratio ofR.sup.6 O is 2.25 to 3:1,R.sup.7 O is 2 to 2.75:1,R.sup.8 O is 2 to 3:1however, the difference between the C:O ratio of R.sup.6 O and R.sup.7 O must be at least 0.25, and the C:O ratio of R.sup.8 O must be less than that of R.sup.7 O or greater than that of R.sup.6 O,a is 0 to 2,0<b<3, whereby 0<a+b<3,p, q, s.gtoreq.2,x, y.gtoreq.0, andz.gtoreq.3.The invention furthermore relates to a process for the synthesis of these compounds as well as to their use as emulsion breakers for crude oil/water emulsions.Type: GrantFiled: July 19, 1983Date of Patent: February 26, 1985Assignee: Th. Goldschmidt AGInventors: Gotz Koerner, Christian Weitemeyer
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Patent number: 4472591Abstract: A novel branched hydrosilyl-modified polycarbosilane which can be pyrolized to obtain improved yields of silicon carbide. This novel branched hydrosilyl-modified polycarbosilane can be prepared in a one-step reaction from mixtures of silane monomers containing vinyl or halomethyl moieties with silane monomers containing hydrosilyl groups.Type: GrantFiled: March 28, 1983Date of Patent: September 18, 1984Assignee: Union Carbide CorporationInventors: Curtis L. Schilling, Jr., Thomas C. Williams
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Patent number: 4414403Abstract: Silicon carbide can be produced by the pyrolysis of branched polycarbosilanes which in turn are produced directly from selected monomer systems.Type: GrantFiled: March 23, 1982Date of Patent: November 8, 1983Assignee: Union Carbide CorporationInventors: Curtis L. Schilling, Jr., Thomas C. Williams, John P. Wesson
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Patent number: 4412038Abstract: Silyl-group-containing 1,3-butadiene polymers are stabilized against self crosslinking by addition of epoxides having an epoxy oxygen content of 2-17% by weight.Type: GrantFiled: August 4, 1982Date of Patent: October 25, 1983Assignee: Chemische Werke Huels AGInventors: Dieter Zerpner, Roland Streck
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Patent number: 4404153Abstract: What is disclosed is a process for preparing R'.sub.3 SiNH-containing silazane polymers by contacting and reacting chlorine-containing disilanes with {R'.sub.3 Si}.sub.2 NH where R' is vinyl, hydrogen, an alkyl radical of 1-3 carbon atoms or the phenyl group. The silazane polymers are useful as chemical intermediates to produce silicon-containing chemical compounds. They are also useful in the formation of silicon carbide-containing ceramic materials.Type: GrantFiled: August 10, 1981Date of Patent: September 13, 1983Assignee: Dow Corning CorporationInventor: John H. Gaul, Jr.
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Patent number: 4400528Abstract: A process for methylating silicon compounds containing halogen and at least 2 silicon atoms and optionally carbon and hydrogen atoms as the only atoms in the molecule, which comprises reacting a silicon compound containing halogen and at least two silicon atoms per molecule, such as hexachlorodisilane or 1,1,2,2-tetrachloro-1,2-dimethyldisilane or mixtures of such silanes with tetramethylsilane in the presence of at least one organoaluminum compound having the general formulaR.sub.a AlY.sub.3-a'where R represents the same or different alkyl radicals having from 1 to 4 carbon atoms, Y represents halogen, hydrogen or hydrocarbon radicals having from 1 to 10 carbon atoms which are bonded to the aluminum atom via oxygen and which are free of aliphatic multiple bonds, and a is 1, 2 or 3, or an in situ formed compound obtained from the reaction of such aluminum compound, with at least one other reactant present in the reaction mixture, at least one silane of the general formulaR.sub.b.sup.1 H.sub.c SiCl.sub.Type: GrantFiled: April 28, 1982Date of Patent: August 23, 1983Assignee: Wacker-Chemie GmbHInventors: Reinhold Artes, Volker Frey, Werner Graf, Norbert Zeller
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Patent number: 4396751Abstract: A homo- or copolymer of a 1,3-diene having reactive silyl groups bound thereto, and containing 0.4-12% by weight of bound silicon, prepared by reacting at a temperature of 150.degree.-300.degree. C., a 1,3-diene homo- or copolymer, having less than 1% of its aliphatic double bonds conjugated and having a molecular weight (M.sub.n) of 400-8,000, with a silicon compound of the formula ##STR1## wherein R is an unsaturated aliphatic hydrocarbon residue of 2-20 carbon atoms,X is halogen, C.sub.1-6 alkoxy, C.sub.1-6 alkoxyalkoxy, C.sub.6-12 aryloxy, C.sub.1-8 alkanoyloxy, C.sub.1-6 ketoximato or C.sub.1-8 hydrocarbylamido,Y and Z independently are one of the X groups, hydrogen, alkyl of 1-8 carbon atoms, cycloalkyl of 5-12 carbon atoms, or optionally substituted phenyl.Type: GrantFiled: June 15, 1981Date of Patent: August 2, 1983Assignee: Chemische Werke Huels AktiengesellschaftInventors: Wolfgang Kampf, Roland Streck, Horst G. Haag
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Patent number: 4395562Abstract: A novel silicone compound having a group such as methoxy group, which can be bonded to an inorganic substance and a vinylidene group and being useful as a silane coupling agent. The compound has the following general formula ##STR1## where R is an alkyl group of 1 to 7 carbon atoms or a hydrogen atom; R' and R" respectively represent an alkyl group of 1 to 7 carbon atoms; X and X' respectively represent a chlorine atom or an alkoxy group of 1 to 4 carbon atoms; and n and m respectively represent an integer of 0 to 3.The compound is prepared by reacting an alkyl allene represented by the general formula H.sub.2 C.dbd.C.dbd.CHR with a disilane represented by the general formula R'.sub.n X.sub.3-n Si.sub.2 R".sub.m X'.sub.3-n (where R, R', R", X, X', n and m are as defined above) in the presence of a phosphine complex of a transition metal.Type: GrantFiled: April 7, 1982Date of Patent: July 26, 1983Assignee: Chisso CorporationInventors: Terui Yohji, Koga Isao, Ohtake Nobumasa
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Patent number: 4377677Abstract: A method of preparing polycarbosilanes having high molecular weight and also having the major structural unit of silicon-carbon linkage. The method comprises heating a polysilane at 50.degree.-600.degree. C. in atmosphere of an inert gas and distilling out a low molecular weight polycarbosilane fraction having the number mean molecular weight of 300-600, followed by polymerizing the fraction by heating it at 250.degree.-500.degree. C. in atmosphere of an inert gas. The polycarbosilane obtained by the method of the present invention is useful for the precursor of preparing silicon carbide fibres and shaped articles.Type: GrantFiled: November 5, 1981Date of Patent: March 22, 1983Assignee: Ube Industries, Ltd.Inventors: Tadashi Iwai, Takashi Kawahito, Masahiro Tokuse
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Patent number: 4347347Abstract: A process for producing an organometallic copolymer composed of a polycarbosilane portion and a polymetallosiloxane portion crosslinked with each other, which comprises reacting (1) a polycarbosilane having a main chain skeleton composed mainly of carbosilane units of the formula --Si-CH.sub.2 --, with (2) a polymetallosiloxane having a main chain skeleton composed of metalloxane units of the formula --M-O-- wherein M represents Ti or Zr and siloxane units of the formula --Si-O--, in an organic solvent in an inert atmosphere thereby to bond at least some of the silicon atoms of said polycarbosilane to at least some of the metal atoms M and/or silicon atoms of said polymetallosiloxane through an oxygen atom; and the organometallic copolymer obtained by the aforesaid process.Type: GrantFiled: June 18, 1980Date of Patent: August 31, 1982Assignee: Ube Industries, Ltd.Inventors: Seishi Yajima, Kiyohito Okamura, Yoshio Hasegawa, Takemi Yamamura
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Patent number: 4269780Abstract: A process for forming non-polymeric disproportionation products of non-conjugated olefins using catalysts comprising (1) at least one of certain neutral carbene complexes, and (2) at least one of certain compounds of Groups IVa, IVb, Vb, VIb, VIIb, VIII, and Ib of the Periodic Table of the Elements.Type: GrantFiled: December 6, 1979Date of Patent: May 26, 1981Assignee: Phillips Petroleum CompanyInventor: Dennis S. Banasiak
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Patent number: 4198337Abstract: A silicon peroxide selected from the formulas:(R').sub.4-n --Si--(OOR).sub.n (a) ##STR1## wherein n is an integer of 1-3; R is a t-octyl group in which a tertiary carbon atom is directly bonded to the peroxy group; and R' is selected from alkyl, phenyl, and alkenyl (provided n is not more than 2), and a carbon chain which forms a saturated heterocyclic ring with the silicon atom, each R' group having up to about 10 carbon atoms. Typical is trimethyl (2,4,4-trimethyl-2-pentylperoxy) silane. These molecules are useful as catalysts for curing polyester resins and are particularly advantageous as crosslinking agents for high density polyethylene in that crosslinking is effected at lower temperatures than required by the prior art.Type: GrantFiled: September 25, 1978Date of Patent: April 15, 1980Assignee: Argus Chemical CorporationInventors: Lawrence A. Bock, Reidar Halle