Material Contains A Group Iiia Metal Patents (Class 528/16)
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Patent number: 6395855Abstract: The present invention relates to mixtures containing bi-functionally terminated diorganopoly siloxanes aminosilane or oxime or alkoxy crosslinking agents, and optionally, filling materials, suitable additives, pigments, colorants, anti-oxidation pigments, anti-heat pigments, and light-protection pigments in addition to solvents and plasticizers. Said mixtures contain water and a catalyst in the form of an acidic or basic neutral salt as an accelerating cross-linking agent.Type: GrantFiled: August 31, 2000Date of Patent: May 28, 2002Assignee: Heidelberger Bauchemie GmbHInventors: Werner Luft, Michael Futscher, Hermann Pahl
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Patent number: 6361871Abstract: A composition comprising at least one organofluorine-functional silane and/or siloxane, at least one mineral acid and at least one metal salt of aluminum(III), tin(II), tin(IV), iron(III) or titanium(III); a process for preparing said composition and to its use; and surface-modified substrates obtainable by coating with said composition.Type: GrantFiled: February 1, 2000Date of Patent: March 26, 2002Assignee: Degussa AGInventors: Peter Jenkner, Roland Edelmann, Albert-Johannes Frings, Michael Horn, Ralf Laven, Helmut Mack, Jaroslaw Monkiewicz, Burkhard Standke
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Patent number: 6235863Abstract: A method for producing a saturated siloxane polymer is provided. In one aspect, the method comprises hydrogenating an aromatic siloxane monomer by contacting it with hydrogen in a temperature of 100° C. to 200° C. and a hydrogen pressure of 1000 to 2000 psi for 1 to 6 hours in the presence of a hydrogenation catalyst to produce a hydrogenated siloxane monomer, and anionically polymerizing the hydrogenated siloxane monomer.Type: GrantFiled: November 17, 1999Date of Patent: May 22, 2001Assignee: Shell Oil CompanyInventor: Ronald James Hoxmeier
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Patent number: 6201091Abstract: An organofunctional cocyclic siloxane, i.e., a dialkyl, alkyl carboxyalkyl cocyclic siloxane, is used to prepare copolymeric siloxane fluids, copolymeric siloxane gums, and terpolymeric siloxanes via three polymerization techniques. In one embodiment, the dialkyl, alkyl carboxyalkyl cocyclic siloxane is polymerized using a bulk polymerization technique. In another embodiment, the dialkyl, alkyl carboxyalkyl cocyclic siloxane is polymerized using an emulsion polymerization technique. In an additional embodiment, the dialkyl, alkyl carboxyalkyl cocyclic siloxane is polymerized using a microemulsion polymerization technique. The dialkyl, alkyl carboxyalkyl cocyclic siloxane most preferred is a dimethyl, methyl carboxyalkyl cocyclic siloxane.Type: GrantFiled: August 20, 1999Date of Patent: March 13, 2001Assignee: Dow Corning CorporationInventors: Daniel Joseph Halloran, Brett Lee Zimmerman
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Patent number: 6174983Abstract: Silicone terpolymers, modified with phenyl or substituted phenyl groups and polyalkyleneoxides, which exhibit refractive indices >1.47 are disclosed. These materials of the present invention when incorporated in formulations for surface treatment improve slip and gloss of the substrates to which they are applied, and are useful in hair care and coatings applications.Type: GrantFiled: November 12, 1998Date of Patent: January 16, 2001Assignee: C. K. Witco CorporationInventors: Anna Czech, Jeffrey A. Cooke
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Patent number: 6174968Abstract: A silicone oil gel composition which is comprised of a polysiloxane block copolymer which has at least two blocks of polystyrene, polyethylene, and hydrogenated polyisoprene wherein the overall number average molecular weight is from 1000 to 50,000, the polystyrene content is 15% or less by weight, the polystyrene block weight average molecular weight is from 0 to 10,000, the polyethylene block number average molecular weight is from 0 to 10,000, the hydrogenated polyisoprene block number average molecular weight is from 0 to 10,000, the polysiloxane block number average molecular weight is from 1000 to 49,000, wherein the block copolymer is dissolved in a silicone oil which is a hydrogenated silicone oil.Type: GrantFiled: August 24, 1999Date of Patent: January 16, 2001Assignee: Shell Oil CompanyInventor: Ronald James Hoxmeier
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Patent number: 6143856Abstract: A phenolic-rich pyrolysis oil is produced by pyrolysing lignocellulosic material at a temperature of no more than about 550.degree. C under an absolute pressure of no more than about 50 kPa to produce pyrolysis vapors, and condensing the pyrolysis vapors to obtain a condensate consisting of a phenolic-rich pyrolysis oil having a dew point of about 65 to about 75.degree. C. under an absolute pressure of about 15 to about 20 kPa. Such a phenolic-rich pyrolysis can be directly used in making phenol-formaldehyde resol resins.Type: GrantFiled: February 5, 1999Date of Patent: November 7, 2000Assignee: Pyrovac Technologies Inc.Inventors: Christian Roy, Xiao Lu, Hooshang Pakdel
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Patent number: 6063887Abstract: A 1-acyloxy-organotetrasiloxane represented by the general formula: ##STR1## wherein R.sup.1 is a monovalent organic group containing an acryloyloxy group or a monovalent organic group containing a methacryloyloxy group, and R.sup.2 is a monovalent hydrocarbon group, and a process for producing the above mentioned 1-acyloxy-organotetrasiloxane, which is characterized by subjecting hexamethylcyclotrisiloxane to a ring-opening reaction with an acyloxysilane represented by the general formula: ##STR2## wherein R.sup.1 is a monovalent organic group containing an acryloyloxy group or a monovalent organic group containing a methacryloyloxy group, and R.sup.2 is a monovalent hydrocarbon group, in the presence of an acidic catalyst.Type: GrantFiled: May 18, 1998Date of Patent: May 16, 2000Assignee: Dow Corning Toray Silicone Co., Ltd.Inventor: Tadashi Okawa
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Patent number: 6057039Abstract: The present invention relates to a coating composition characterized in that an acetylacetonate having as the central metallic atom thereof Fe, Al, Sn or Ti, or a perchlorate, or a carboxylic acid or an anhydride thereof, and an acetylacetonate having as the central metallic atom thereof Li, Cu or Mn are incorporated in combination as curing catalysts; and to a composite structure characterized in that an antireflection film is provided on the surface of a coating film that is obtained from the above composition.According to the present invention, a coating film which is drastically improved in transparency, optical properties and durability can be obtained. Moreover, this coating film has both high adhesion to an antireflection film made from an inorganic material, and durability. Further, according to the present invention, the pot life of a coating liquid when preserved at room temperature can be prolonged to 3 weeks or longer.Type: GrantFiled: July 6, 1998Date of Patent: May 2, 2000Assignee: Seiko Epson CorporationInventors: Katsuyoshi Takeshita, Jun Kinoshita
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Solvent-free two-liquid type normal temperature curable liquid polymer composition and a use thereof
Patent number: 6054546Abstract: Provided is a solvent-free two-liquid type normal temperature curable liquid polymeric composition which comprises (I) as a first liquid, a liquid composition comprising (A) an organosiloxane component comprised of (a) one or more liquid organopolysiloxanes of the general formula: ##STR1## wherein R.sup.1 stands for a hydrogen atom, an alkyl group with 1-5 carbon atoms or an acyl group; R.sup.2 to R.sup.6 are the same or different and each stands for a hydrogen atom, --OR.sup.1 or a univalent hydrocarbon group; and n for an integer of 1-15, (b) a crosslinking agent comprising one or more organometallic compounds of the general formula:R.sup.7.sub.p M.(OR.sup.1).sub.3-porR.sup.7.sub.m Q.(OR.sup.1).sub.4-mwherein M stands for aluminum or boron element; Q for silicon, titanium or zirconium element; R.sup.1 for a hydrogen atom, an alkyl group with 1-5 carbon atoms, an acyl group or an oxime group; R.sup.7 for a hydrogen atom, --OR.sup.Type: GrantFiled: February 3, 1998Date of Patent: April 25, 2000Assignee: Suzuki Sangyo Co., Ltd.Inventors: Tomio Suzuki, Kimie Watanabe -
Patent number: 5990024Abstract: Novel methods for the preparation of polymers useful as precursors to ceramic materials by catalytic activation of Si--H bonds are disclosed. The methods comprise reacting, in the presence of a catalyst effective to activate Si--H bonds, Si--N bonds, or both, and/or a reactive solvent, a polymer in the form of a polysilane, polysilazane, polysiloxane or polycarbosilane with a reactant having the structural formula R--X--H, wherein X is NR' or O, R is H, organic, silyl, siloxyl, silazanyl or carbosilyl and may contain at least one additional X--H group, and R' is H, amino, silyl or silazanyl, to produce a modified polymer containing at least one Si--X bond. Polymers produced by these methods are also disclosed.Type: GrantFiled: June 16, 1997Date of Patent: November 23, 1999Assignee: SRI InternationalInventors: Yigal Blum, Gregory A. McDermott
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Patent number: 5985991Abstract: The invention relates to a RTV silicone composition having increased hot oil resistance upon curing. The RTV silicone composition comprises a polydiorganosiloxane, an acyloxy-functional crosslinker, a metal salt of a carboxylic acid catalyst, a filler, and a metal acetate. In a preferred embodiment a metal acetylacetonate is also added.Type: GrantFiled: June 10, 1997Date of Patent: November 16, 1999Assignee: Dow Corning CorporationInventors: Philip David Beljanski, Peter James Houck, Loren Dale Lower
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Patent number: 5981682Abstract: A silicone composition curable to a silicone bonding agent that is suitable for use in manufacturing an optical memory element comprises:(A) 100 parts by weight of an organopolysiloxane having an average of at least two silicon-bonded alkoxy groups per molecule and an average of at least two silicon-bonded alkenyl groups per molecule, wherein the alkoxy groups and the alkenyl groups are in the same molecule;(B) an organohydrogenpolysiloxane having an average of at least two silicon-bonded hydrogen atoms per molecule, wherein the molar ratio of silicon-bonded hydrogen atoms in component (B) to silicon-bonded alkenyl groups in component (A) is from 0.3:1 to 20:1;(C) 0.01 to 20 parts by weight of a metal condensation reaction catalyst wherein the metal of said metal condensation reaction catalyst is selected from the group consisting of titanium, zirconium and aluminum; and(D) a catalytic amount of a hydrosilylation reaction catalyst. The composition is cured by an addition reaction and a condensation reaction.Type: GrantFiled: June 19, 1997Date of Patent: November 9, 1999Assignee: Dow Corning Toray Silicone Co., Ltd.Inventor: Masayuki Onishi
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Patent number: 5969075Abstract: A room temperature curable organopolysiloxane composition comprising (A) an organopolysiloxane having at least two hydroxyl groups, (B) finely divided silica, (C) an amino-bearing silane, (D) an organic silicon compound, and (E) a curing catalyst is prepared by mixing components (A) and (B) with component (C) and thereafter, mixing components (D) and (E).Type: GrantFiled: July 13, 1998Date of Patent: October 19, 1999Assignees: Shin-Etsu Silicones of America, Shin-Etsu Chemical Co., Ltd.Inventor: Yoshifumi Inoue
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Patent number: 5962583Abstract: The invention relates to a RTV silicone composition having increased hot oil resistance upon curing. The RTV silicone composition comprises a polydiorganosiloxane, an acyloxy-functional crosslinker, a metal salt of a carboxylic acid catalyst, a filler, and a metal acetylacetonate. In a preferred embodiment a metal oxide is also added.Type: GrantFiled: June 10, 1997Date of Patent: October 5, 1999Assignee: Dow Corning CorporationInventors: Philip David Beljanski, Loren Dale Lower
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Patent number: 5932650Abstract: Room temperature vulcanizable silicone compositions comprising an iron carboxylate exhibit improved high temperature adhesion.Type: GrantFiled: January 26, 1996Date of Patent: August 3, 1999Assignee: General Electric CompanyInventor: Brian P. Bayly
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Patent number: 5922628Abstract: A method of joining similar or dissimilar ceramic and ceramic composite materials, such as SiC continuous fiber ceramic composites, at relatively low joining temperatures uses a solventless, three component bonding agent effective to promote mechanical bond toughness and elevated temperature strength to operating temperatures of approximately 1200 degrees C. The bonding agent comprises a preceramic precursor, an aluminum bearing powder, such as aluminum alloy powder, and mixtures of aluminum metal or alloy powders with another powder, and and boron powder in selected proportions. The bonding agent is disposed as an interlayer between similar or dissimilar ceramic or ceramic composite materials to be joined and is heated in ambient air or inert atmosphere to a temperature not exceeding about 1200 degrees C. to form a strong and tough bond joint between the materials.Type: GrantFiled: February 23, 1998Date of Patent: July 13, 1999Assignee: Iowa State University Research Foundation, Inc.Inventors: Thomas J. Barton, Iver E. Anderson, Sina Ijadi-Maghsoodi, Mohammad Nosrati, Ozer Unal
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Patent number: 5919883Abstract: The invention relates to a process for preparing polyorganosiloxanes which comprise substantially no cyclic components and have uniform molecular weight distribution by reacting organosilicon compounds which have no condensable groups in the presence of a catalyst which exclusively promotes equilibration and suppresses formation of cyclic components. The resulting polyorganosiloxanes have a linear or branched structure. They can either be used immediately, for example in silicone rubbers and silicone greases, as components in release agents, in impregnating agents, in antifoams, etc., or are starting compounds for preparing organofunctionally modified polysiloxanes which are obtained by hydrosilylation of the polyorganosiloxanes with hydrocarbons and/or organic polymers.Type: GrantFiled: August 15, 1997Date of Patent: July 6, 1999Assignee: Huels Silicone GmbHInventors: Uwe Dittrich, Holger Rautschek, Harald Schickmann
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Patent number: 5877232Abstract: The invention relates to a self-curing, photochemically or thermally curable resinous dental composition based on polymerisable polysiloxanes, to a process for its preparation and to its use for the preparation of pasty, self-curing, photochemically or thermally curable dental materials. Said composition is obtainable by hydrolytic condensation of one or more hydrolytically condensable silicon compounds, 1 to 100 mol %, based on monomeric compounds, of silanes of the general formula: Y.sub.n- SiX.sub.m R.sub.4-(n+m) and/or {X.sub.n R.sub.k Si?R.sup.2 (A).sub.l !.sub.4-(n+k) }.sub.x B being selected. The radicals A, X, Y, R.sup.2, R' and R are identical or different and have the following meaning: A=O, S, PR', POR', NHC(O)O or NHC(O)ONR', B=a straight-chain or branched organic radical which is derived from a compound B' having at least one (for l=1 and A=NHC(O)O or NHC(O)NR') or at least two C.dbd.C double bonds and 5 to 50 carbon atoms, R=alkyl, alkenyl, aryl, alkylaryl or arylalkyl, R'=H, alkyl or aryl, R.Type: GrantFiled: September 13, 1996Date of Patent: March 2, 1999Assignee: The Procter & Gamble CompanyInventors: Werner Storch, Herbert Wolter
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Patent number: 5804631Abstract: A curable organosiloxane composition useable as a silicone die attach adhesive, an electrically conductive silicone rubber composition each comprising a composition that cures through both addition and condensation reactions, that will not impair wire bondability to a semiconductor chip or lead frame after the semiconductor chip has been bonded to a substrate or package; and semiconductor devices in which the semiconductor chip is bonded to its substrate or package using the curable organosiloxane composition and in which the semiconductor device that evidences high reliability by virtue of the use of the curable organosiloxane composition.Type: GrantFiled: July 30, 1996Date of Patent: September 8, 1998Assignee: Dow Corning Toray Silicone Co., Ltd.Inventors: Katsutoshi Mine, Osamu Mitani, Kazumi Nakayoshi, Rikako Tazawa
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Patent number: 5801262Abstract: The present invention relates to a process to prepare polysiloxane microspheres with narrow size distribution having a particle size in the range of about 0.5 microns to about 10 microns. The first step involves combining, by weight, an optional anionic surfactant, a polymeric stabilizer, an hydroxide base, and water to form a first aqueous mixture to which is added a silane monomer to form a second aqueous mixture. The second aqueous mixture is then stirred at a temperature of from about 5.degree. C. to about 90.degree. C. for at least about 1 hours to form an aqueous dispersion comprising polysiloxane microspheres. The polysiloxane microspheres upon separation may be optionally washed with water and optionally dried at a temperature of up to about 300.degree. C. The polysiloxane microspheres can be further optionally jet treated to yield polysiloxane microspheres with a narrow size distribution having a particle size in the range of about 0.5 microns to about 10 microns.Type: GrantFiled: June 30, 1997Date of Patent: September 1, 1998Assignee: General Electric CompanyInventor: Mary Elizabeth Adams
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Patent number: 5734001Abstract: A novel fluorosilicone compound having at least two hydroxyl groups in its molecule and a curable composition containing such a compound and a commercially available general purpose curing agent; the compound is used suitably for a lubricant and a fiber treating agent, and the curable composition is used suitably for a mold releasing agent, a water- and oil-repelling agent, a stain-proof coating agent, a non-tackifying coating agent, a coating agent for optical use and a sealant.Type: GrantFiled: November 20, 1996Date of Patent: March 31, 1998Assignee: Daikin Industries, Ltd.Inventors: Fumihiko Yamaguchi, Tatsuya Otsuka, Masayuki Yamana, Masato Kashiwagi, Hirotoshi Sakashita
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Patent number: 5733995Abstract: A organopolysiloxane composition suited to automobile oil seals is provided, which includes (A) a diorganopolysiloxane having a viscosity at 25.degree. C. of 25 to 1,000,000 cSt blocked with a hydroxyl group at both ends of its molecular chain; (B) an iminoxysilane having the formula (1):(R.sup.1).sub.4-n Si?--O--N.dbd.C(R.sup.1).sub.2 !.sub.n (1)wherein R.sup.1 are an unsubstituted or substituted monovalent saturated hydrocarbon group, and n is 3 or 4; (C) an amino group-containing hydrolyzable silane having the formula (2):H.sub.2 N--R.sup.2 --NH--R.sup.2 --Si(--O--R.sup.3).sub.3 (2)wherein R.sup.2 are an unsubstituted or substituted divalent saturated hydrocarbon group having 1 to 4 carbon atoms, and R.sup.3 are a monovalent saturated hydrocarbon group having 1 to 4 carbon atoms; and (D) a curing catalyst. The composition is able to maintain a low foamability even when dispersed or dissolved in automobile oils, and is cured to provide an automobile oil seal.Type: GrantFiled: October 28, 1996Date of Patent: March 31, 1998Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Tsuneo Kimura, Kazuyuki Suzuki
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Patent number: 5708113Abstract: The invention relates to catalysts for the preparation and processing of polyorganosiloxanes, in particular for processing silicone resins, for example for solvent-free production of mica insulating materials. The catalysts are silanized organometallic compounds.Type: GrantFiled: January 23, 1997Date of Patent: January 13, 1998Assignee: Huels Silicone GmbHInventors: Gunter Beuschel, Holger Rautschek, Gisela Liesch
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Patent number: 5700400Abstract: A method for producing a semiconducting material by subjecting a hydrosilane monomer to dehydrogenative condensation followed by thermal decomposition is disclosed. The hydrosilane monomer may be a hydromonosilane, a hydrodisilane or a hydrotrisilane. The dehydrogenative condensation is conducted in the presence of a catalyst that contains at least one metal or metal compound of Groups 3B, 4B and 8 of the Periodic Table. The catalyst may be used in conjunction with a silane compound or a metal hydride. The semiconducting material that is formed may have a silicon content of 70 atomic % or more.Type: GrantFiled: August 14, 1995Date of Patent: December 23, 1997Assignee: Nippon Oil Co., Ltd.Inventors: Keizo Ikai, Masaki Minami, Mitsuo Matsuno
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Patent number: 5684110Abstract: A silicone rubber composition which can be used to provide a formed-in-place gasket which exhibits excellent pressure resistance immediately after its site application and cures into a highly pressure-resistant and strongly adherent silicone rubber gasket comprising (A) 100 weight parts of a mixture of comprising an alkoxy-substituted polyorganosiloxane and an alkenyl-substituted polyorganosiloxane; (B) a hydrogen-containing polyorganosiloxane an alkoxysilane; a condensation reaction catalyst; and platinum catalyst.Type: GrantFiled: July 1, 1996Date of Patent: November 4, 1997Assignee: Dow Corning Toray Silicone Co., Ltd.Inventor: Naoji Kawamura
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Patent number: 5674941Abstract: A coating composition having excellent antifogging property, good abrasion resistance, improved adhesion to the substrate and good water resistance, which comprises an epoxy functional organosilane or the hydrolysate or condensate thereof; an amino functional organosilane or the hydrolysate or condensate thereof; a hydrophilic (meth)acrylate monomer, or a copolymer of two components selected from the hydrophilic (meth)acrylate monomer, another hydrophilic monomer and an organosilane and/or a terpolymer of the three components; a curing catalyst; and, optionally, a multi-functional (meth)acrylate monomer having at least two (meth)acryl groups and a radical polymerization initiator.Type: GrantFiled: April 15, 1994Date of Patent: October 7, 1997Assignee: Lucky LimitedInventors: Yong-Il Cho, Sung-Hoon Jang, Jung-Ok Park
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Patent number: 5672672Abstract: A polymeric optical material which is a mixture of a polysiloxane and at least one compound selected from the group consisting of polyisocyanate, silane, alkoxide and chelate, and an optical waveguide fabricated from the polymeric optical material having high thermal stability and low propagation loss over wide range. The polysiloxane may have, for example, a repeating unit of following formula (I): ##STR1## wherein each of R.sub.1 and R.sub.2 is independently an alkyl, deuterated alkyl or halogenated alkyl group, or a phenyl, deuterated phenyl or halogenated phenyl group. The optical waveguide includes a substrate, a clad layer provided on the substrate and a core layer surrounded by the clad layer. The clad layer is composed of a lower clad layer which is overlaid onto the substrate and an upper clad layer which surrounds the core layer.Type: GrantFiled: October 26, 1995Date of Patent: September 30, 1997Assignee: Nippon Telegraph and Telephone CorporationInventors: Michiyuki Amano, Toshio Watanabe, Mitsuo Usui, Shungo Sugawara, Shoichi Hayashida, Saburo Imamura
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Patent number: 5670597Abstract: A process for the preparation of organopolysiloxanes which contain at least one unit of the formula(R.sup.1 O).sub.3-m R.sub.m SiO.sub.1/2 (I)in whichR is identical or different and is a hydrogen atom or monovalent, optionally substituted hydrocarbon radical,R.sup.1 is identical or different and is a monovalent, optionally substituted hydrocarbon radical having 1 to 8 carbon atoms andm is 0, 1 or 2,which comprises, in a 1st step, reacting organosilicon compounds (1) which contain at least one Si-bonded hydroxyl group with at least one silane (2) of the formula(R.sup.1 O).sub.4-m SiR.sub.m (II)and/or partial hydrolysates thereof, in which R, R.sup.1 and m have the above mentioned meaning, in the presence of a fluoride salt (3), and, optionally, in a 2nd step, when the reaction has ended, adding component (4) which can bond fluoride ions.Type: GrantFiled: January 31, 1995Date of Patent: September 23, 1997Assignee: Wacker-Chemie GmbHInventors: Michael Stepp, Stefan Oberneder
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Patent number: 5670596Abstract: A batch or continuous process for the production of low molecular weight hydrogen siloxanes catalyzed by soluble phosphonitrilic halides or solid acid catalysts such as acid washed clays, zeolites and ion exchange resins.Type: GrantFiled: March 27, 1996Date of Patent: September 23, 1997Assignee: General Electric CompanyInventors: John S. Razzano, Patricia P. Anderson, Robert J. Perry
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Patent number: 5639844Abstract: Novel methods for the preparation of polymers useful as precursors to ceramic materials by catalytic activation of Si--H bonds are disclosed. The methods comprise reacting, in the presence of a catalyst effective to activate Si--H bonds, Si--N bonds, or both, and/or a reactive solvent, a polymer in the form of a polysilane, polysilazane, polysiloxane or polycarbosilane with a reactant having the structural formula R--X--H, wherein X is NR' or O, R is H, organic, silyl, siloxyl, silazanyl or carbosilyl and may contain at least one additional X--H group, and R' is H, amino, silyl or silazanyl, to produce a modified polymer containing at least one Si--X bond. Polymers produced by these methods are also disclosed.Type: GrantFiled: October 25, 1995Date of Patent: June 17, 1997Assignee: SRI InternationalInventors: Yigal Blum, Gregory A. McDermott
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Patent number: 5625022Abstract: Curable organopolysiloxane composition that undergoes a uniform curb by both condensation and addition reactions without being subject to cure inhibition by cure inhibitors and thereby produces cured silicone that is strongly adherent to any of various substrates residing in contact with the composition during its cure. The curable organopolysiloxane composition is a mixture of organopolysiloxane with at least 2 silicon-bonded alkoxy groups in each molecule and organopolysiloxane with at least 2 silicon-bonded lower alkenyl groups in each molecule, an organopolysiloxane containing at least 2 silicon-bonded hydrogen atoms in each molecule, an alkoxysilane of the formula R.sup.1.sub.x Si(OR.sup.2).sub.(4-x) where R.sup.1 is a monovalent hydrocarbon group, R.sup.2 is alkyl or alkoxyalkyl, and x is 0, 1, or 2 or partial hydrolysis condensate thereof, an organozirconium compound or an organoaluminum compound, and a hydrosilylation reaction catalyst in a catalytic quantity.Type: GrantFiled: March 21, 1996Date of Patent: April 29, 1997Assignee: Dow Corning Toray Silicone Co., Ltd.Inventor: Masayuki Onishi
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Patent number: 5623030Abstract: A curable composition providing a cured product having a silicon type interpenetrating polymer network, which comprises (A) a silsesquioxane ladder polymer, (B) a silicon compound having at least two SiH groups per molecule, (C) a silicon compound having at least two vinylsilyl groups per molecule and (D) a neutral platinum catalyst; and a process for producing a molded article comprising heating the curable composition under a controlled temperature for synchronously causing hydrolysis and condensation of the alkoxysilyl group and/or silanol group and hydrosilylation.Type: GrantFiled: November 29, 1995Date of Patent: April 22, 1997Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Manabu Tsumura, Masafumi Hiraishi, Takahisa Iwahara, Toshifumi Hirose
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Patent number: 5616673Abstract: Use of a certain class of acid washed clays enables a fixed bed process for the production of very low viscosity low silanol content silicone fluids to be produced in a fixed bed single reactor process.Type: GrantFiled: December 13, 1995Date of Patent: April 1, 1997Assignee: General Electric CompanyInventors: Patricia P. Anderson, Dennis P. Thompson
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Patent number: 5595826Abstract: Organopolysiloxane compositions which cure by the addition reaction of silicon-bonded lower alkenyl radicals with silicon-bonded hydrogen atoms and which exhibit improved adhesion to a variety of substrates. The compositions comprise an adhesion promoting mixture comprising an epoxy-functional compound, a compound having at least one hydroxy group and in the same molecule at least one substituent selected from a group consisting of silicon hydride, alkenyl, and acryl, and an aluminum compound or zirconium compound. Compression set of the cured organopolysiloxane compositions is not significantly effected by the adhesion promoting mixture.Type: GrantFiled: October 11, 1995Date of Patent: January 21, 1997Assignee: Dow Corning CorporationInventors: Thomas E. Gray, Michael A. Lutz
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Patent number: 5563210Abstract: Organosiloxane oligomers wherein at least a portion of the siloxane units contain a silicon-bonded phenyl or phenylalkyl radical are suitable diluents for organosiloxane/oxyalkylene copolymers when these copolymers are used as thixotropic agents in the crosslinking agent portion of multi-part moisture curable organosiloxane compositions.Type: GrantFiled: September 18, 1995Date of Patent: October 8, 1996Assignee: Dow Corning CorporationInventors: Joan M. Donatelli, Daniel F. McMahon, David R. Salverson
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Patent number: 5512605Abstract: Epoxysilicone polyether block copolymers, when combined with certain sulfonium photocatalysts, provide one-component shelf-stable UV curable compositions. Non-polyether containing epoxy silicones form one part UV curable compositions with sulfonium salt solubilized in the presence of fluoroalcohols.Type: GrantFiled: December 28, 1994Date of Patent: April 30, 1996Assignee: General Electric CompanyInventors: Richard P. Eckberg, Michael J. O'Brien
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Patent number: 5492968Abstract: A resin composition comprising a) a high molecular weight compound containing an average of 2 or more hydroxyl groups and an average of 2 or more epoxy groups per molecule and having a number average molecular weight of 3,000 to 200,000; b) a silane compound having an average of 1 or more alkoxysilane, silanol and acyloxysilane groups per molecule and having a number average molecular weight of 104 to 200,000; and c) a metal chelate compound, is curable at a relatively low temperature to yield a film having excellent resistance to weathering.Type: GrantFiled: November 3, 1994Date of Patent: February 20, 1996Assignee: Kansai Paint Company LimitedInventors: Noboru Nakai, Osamu Isozaki, Naozumi Iwasawa
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Patent number: 5475078Abstract: A novel fluorinated organosilicon compound, exhibiting excellent solvent resistance, chemical resistance and mold release, which is represented by general formula (1): ##STR1## wherein Rf is a divalent group represented by general formula (2): ##STR2## wherein Y is a fluorine atom or CF.sub.3 group; l is an integer of 0-8; k and m are integers of 0-4; j and n are integers of 0 or 1; except when j=k=l=m=n=0.Type: GrantFiled: May 20, 1993Date of Patent: December 12, 1995Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Shinichi Sato, Takashi Matsuda, Kouji Takano, Toshio Takago
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Patent number: 5468825Abstract: A coating composition for carriers which are adapted for use in electrophotography is described. The composition comprises an organopolysiloxane of the following average unit formula (1)R.sup.1.sub.a Si(OR.sup.2).sub.b O.sub.[4-(a+b)]/2 (1)wherein R.sup.1 represents an alkyl group having from 1 to 10 carbon atoms or a phenyl group, R.sup.2 represents a hydrogen atom or an alkyl, alkenyl or alkoxyalkyl group, each having from 1 to 10 carbon atoms for the alkyl and alkenyl and from 2 to 10 carbon atoms for the alkoxyalkyl, a is a value of 0.8.ltoreq.a.ltoreq.1.8, b is a value of 0<b<3, an organosilane of the following general formula (2) serving as a crosslinking agent for the organopolysiloxane(CH.sub.3).sub.2 SiX.sub.2 (2)wherein each X represents an alkenoxy group or oxime having from 2 to 10 carbon atoms, and a curing catalyst for the organopolysiloxane. Carriers having core particles and a cured film of the composition formed on individual particles are also described.Type: GrantFiled: January 24, 1994Date of Patent: November 21, 1995Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Mitsuhiro Takarada, Yuji Yoshikawa, Kenji Yamamoto
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Patent number: 5432007Abstract: A solvent-free ternary organosiloxane composition is disclosed, which contains (A) liquid organopolysiloxane, (B) a cross-linking agent, and (C) a curing catalyst and, optionally, (D) a filler, said organopolysiloxane (A) being constituted by organosilicon group of X--Si (wherein X represents a hydrogen atom or a monovalent hydrocarbyl group) and functional side chain of OR (wherein R represents a hydrogen atom, a C.sub.1 -C.sub.Type: GrantFiled: October 5, 1993Date of Patent: July 11, 1995Assignee: Shizu NAITOInventor: Hiroyuki Naito
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Patent number: 5432280Abstract: A gel-forming silicone composition comprising, compounded in a gel-forming base composition, a silane compound having the following general formula (1) or (2): ##STR1## wherein R.sup.1 is an alkyl or aryl group, R.sup.2 is an alkyl or alkoxyalkyl group, R.sup.3 and R.sup.4 are each a hydrogen atom, a methyl group or an ethyl group, R.sup.5 is an alkyl group or an ester linkage-containing group, and a, b and n are each an integer from 0 to 2. The composition is capable of forming, under mild conditions, a silicone gel which exhibits good adherence to a variety of substrates.Type: GrantFiled: July 2, 1993Date of Patent: July 11, 1995Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Hiroyasu Hara, Masayuki Ikeno, Takehide Okami
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Patent number: 5420221Abstract: A process disclosed for the production of organosiloxanes which is based on the use of a judiciously selected catalyst, e.g., a phosphorus-nitrogen homopolymeric or oligomeric compound, a derivative thereof, a complex thereof, sulfuric acid, a fluorinated alkane sulfonic acid, a kaolin clay, or a mixture of any of the foregoing, to disproportionate or to condense and disproportionate a mixture of two different organosiloxanes which have different molecular weights, without, at the same time, increasing the cyclics content of the mixture.Type: GrantFiled: July 15, 1993Date of Patent: May 30, 1995Assignee: General Electric CompanyInventors: John S. Razzano, Dennis P. Thompson, Patricia P. Anderson, Slawomir Rubinstajn
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Patent number: 5417867Abstract: A fiber treating agent which is a silicone modified polyester in which a polyester has a polyoganosiloxane grafted thereto. The grafted polyester is the reaction product of an allyl ether containing polyester and a polyorganosiloxane wherein at least one of the silicon atoms of the polyorganosiloxane has a hydrogen atom attached thereto. Preferably, the hydrogen atom is attached to one terminal end of the polyorganosiloxane. The reaction product is modified by reacting the reaction product with a polycarboxylic anhydride, and the amine salt of the modified reaction product may be formed by reacting the modified reaction product with an aminoalkylalkoxysilane. Methods of treating fibrous materials are also described.Type: GrantFiled: October 4, 1993Date of Patent: May 23, 1995Assignee: Dow Corning Toray Silicone Co., Ltd.Inventors: Ryuzo Mikami, Isao Ona
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Patent number: 5399601Abstract: A room temperature curable composition suitable as top coat and providing coating films having good properties such as surface appearance, gloss, stain resistance, weatherability and adhesion and a small contact angle with water, which comprises (A) an acrylic copolymer having a specific reactive silicon-containing group such as alkoxysilyl group, (B) a specific hydrolyzable silicon compound and/or its partial hydrolysis condensation product, (C) a specific curing catalyst such as an organic carboxylic acid, a combination of an organic carboxylic acid with an organic amine, or an organometallic compound, and (D) an adhesion improving agent such as a silane coupling agent or its reaction product with an epoxy compound.Type: GrantFiled: June 2, 1994Date of Patent: March 21, 1995Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Akira Kusumi, Hitoshi Tamai, Naotami Ando, Hisao Furukawa
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Patent number: 5391675Abstract: A process for the preparation of amino-substituted organopolysiloxanes which comprises the steps of mixing a catalyst comprising both (i) at least one compound selected from barium hydroxide and strontium hydroxide and (ii) at least one compound selected from borates and phosphates of sodium with (A) a silanol terminated organopolysiloxane compound and (B) an organosilicon compound having at least one silicon-bonded alkoxy or alkoxyalkoxy group and a monovalent substituent composed of carbon, nitrogen and hydrogen and having at least one --NH.sub.2 therein attached to silicon by way of a silicon to carbon linkage and thereafter allowing (A) and (B) to react at a temperature of at least 50.degree. C.Type: GrantFiled: May 31, 1994Date of Patent: February 21, 1995Assignee: Dow Corning LimitedInventors: Steven E. Cray, Mubarik M. Chowdhry
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Patent number: 5391679Abstract: Polyether siloxanes, which are linked to the polysiloxane backbone through Si--C bonds, are synthesized by reacting given polysiloxanes with a compound having at least one epoxide group in such amounts, that there are at least two epoxide groups per OH group, in the presence of Lewis acids at temperatures not exceeding 60.degree. C. or in the presence of complex catalysts, which accelerate the addition between epoxide groups and hydroxyl groups, at temperatures up to 140.degree. C., the reaction optionally being carried out in the presence of an inert solvent. The polyether siloxanes obtained have a defined functionality and are free of excess, unreacted polyol components.Type: GrantFiled: May 17, 1993Date of Patent: February 21, 1995Assignee: Th. Goldschmidt AGInventors: Georg Burkhart, Dietmar Schaefer, Andreas Weier, Dietmar Wewers
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Patent number: 5344880Abstract: A composition including (A) a hydroxyl group-containing acrylic resin, (B) an acrylic copolymer containing an alkoxysilyl group having the formula (I): ##STR1## (C) a polyorganosiloxane and (D) a curing catalyst. The composition can give the film with excellent weatherability, stain resistance, acid resistance, water repellency and durability and with no bad-smelling odor.Type: GrantFiled: January 29, 1993Date of Patent: September 6, 1994Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Toshiro Nambu, Hirotoshi Kawaguchi, Hisao Furukawa, Yasushi Kato
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Patent number: 5319121Abstract: A method is provided for preparing preceramic polymers and 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: July 2, 1992Date of Patent: June 7, 1994Assignee: SRI InternationalInventor: Yigal Blum
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Patent number: 5304622Abstract: Polysilanes are produced from hydrosilanes using as a catalyst a mixture of a specific metallocene compound and a specific silyl compound or a mixture of the specific metallocene compound and a specific metallic hydride.This invention can efficiently provide a polymer having a higher degree of polymerization than in case of using a known catalyst.Type: GrantFiled: December 30, 1992Date of Patent: April 19, 1994Assignee: Nippon Oil Company, Ltd.Inventors: Keizo Ikai, Masaki Minami, Mitsuo Matsuno