Three Oxygens Each Bonded Directly To The Same Silicon And To Carbon Patents (Class 556/458)
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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: 6358612Abstract: The present invention provides a coating composition which comprises at least one silicon compound (A) which has at least one radical which is bonded directly to Si, is not able to be separated hydrolytically and contains an epoxy group, a particulate material (B) which is selected from among oxides, oxide hydrates, nitrides and carbides of Si, Al and B and of transition metals and has a particle size within the range 1 to 100 nm, a Si, Ti, Zr, B, Sn or V compound (C) and at least one hydrolysable Ti, Zr or Al compound (D), which comprises the following ratio 1 mol of the silicon compound (A), 0.42 to 0.68 mol of the particulate material (B), 0.28 to 1.0 mol of the compound (C) and 0.23 to 0.68 mol of the compound (D).Type: GrantFiled: February 24, 2000Date of Patent: March 19, 2002Assignee: Bayer AktiengesellschaftInventors: Peter Bier, Joachim Genz
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Silicone-modified epoxy resin and its preparing method and silicone-modified epoxy resin composition
Patent number: 6355740Abstract: The invention provides a silicone-modified epoxy resin obtained through condensation polymerization of a methoxy group silicone intermediate to a bisphenol-based epoxy resin, and its preparing method and a composition comprising the said silicone-modified epoxy resin. The silicone-modified epoxy resin is excellent in heat resistance and of value for use in coatings for hot appliances such as oven.Type: GrantFiled: February 14, 2000Date of Patent: March 12, 2002Assignee: Kukdo Chemical Co., Ltd.Inventors: Chong Soo Park, Jin Seon Yu, Deuk Sung Bac -
Patent number: 6342562Abstract: A silicon-containing polymer having a tetrafunctional siloxane portion as the basic skeleton, and containing a carboxylic acid group-containing triorganosiloxane portion and a carboxylic acid derivative group-containing triorganosiloxane portion in a specific proportion. It may be advantageously used as a negative non-chemical amplification resist polymer or a positive chemical amplification resist polymer.Type: GrantFiled: April 20, 2000Date of Patent: January 29, 2002Assignee: Fujitsu LimitedInventors: Miwa Kozawa, Keiji Watanabe, Ei Yano
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Patent number: 6335414Abstract: An organopolysiloxane composition comprising (A) an organopolysiloxane, (B) a silane compound having at least two hydrolyzable groups or a partial hydrolyzate thereof, and (C) the addition reaction product between a vinyl group-bearing bisphenol A skeleton compound and an organoxy group-bearing silicon compound is curable at room temperature to a variety of resins including PBT, HIPS and acrylic resins.Type: GrantFiled: March 10, 2000Date of Patent: January 1, 2002Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Takafumi Sakamoto, Mitsuhiro Iwata, Hironao Fujiki
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Patent number: 6329490Abstract: Disclosed are polyhedral organosilicon compounds which are possible to be polymerized and can form a film excellent in adhesiveness to a substrate, having a high hardness, a high transparency and having water and oil repellency, and comprise organofluoro groups or both of organofluoro groups and reactive functional groups, the compounds being soluble in an organic solvent and stable. Organosilicon compounds which have perfluoroalkyl groups or both perfluoroalkyl groups and reactive functional groups and which have a polyhedral structure have the following formulas of (I), (II) and (III): [Rf1—X1—(CH2)a—SiO1.5]m (I) [Rf1—X1—(CH2)a—SiO1.5]m[Rf2—(X2)c—(CH2)b—SiO1.5]n (II) [Rf1—X1—(CH2)a—SiO1.5]m[R—(X2)c—(CH2)b—SiO1.Type: GrantFiled: March 31, 2000Date of Patent: December 11, 2001Assignees: Mitsubishi Materials Corporation, Dai Nippon Toryo Co., Ltd.Inventors: Yukiya Yamashita, Kenji Hayashi, Masaoki Ishihara
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Patent number: 6319982Abstract: Novel hindered alkoxy siloxane compounds and compositions containing hindered alkoxy siloxane compounds are provided. The compositions include a polymer/crosslinking system which is composed of a self crosslinking resin comprised of a silicone fluid modified with pendant or terminal silanes containing hindered alkoxy groups, or a silanol fluid and a crosslinking compound, of a mixture thereof. These components are first emulsified and then formulated into a latex sealant by blending with a separate emulsion of an appropriate catalyst. Crosslinking occurs upon drying of the emulsion.Type: GrantFiled: June 25, 1999Date of Patent: November 20, 2001Assignee: CK Witco CorporationInventors: Misty Weiyu Huang, Bruce A. Waldman, Jeff A. Cooke
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Patent number: 6306957Abstract: An organopolysiloxane, a hydrolyzable group-bearing methylpolysiloxane, a thermal conductive filler, and a curing agent are blended to form a silicone rubber composition which is minimized in viscosity or plasticity increase and remains effectively moldable and workable even when loaded with a large amount of the thermal conductive filler. It cures into a silicone rubber part having a high thermal conductivity.Type: GrantFiled: March 9, 2000Date of Patent: October 23, 2001Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Akio Nakano, Hiroshi Takei, Takeshi Hashimoto, Yuuki Sakurai
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Patent number: 6291697Abstract: The siloxane compounds represented by the following formula: SiOa(OH)b(OR1)c(OR2)d wherein 1.0≦a≦1.6, 0≦b<0.3, 0.2≦c≦2.0, 0≦d≦1.4, 2a+b+c+d=4, R1 is a methyl or ethyl group, and R2 is an organic group different from R1.Type: GrantFiled: November 9, 1998Date of Patent: September 18, 2001Assignee: Mitsubishi Chemical CorporationInventors: Seiichirou Tanaka, Hanako Kato, Takeshi Sawai, Kenji Oba, Hozumi Endo, Haruo Katsumata
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Patent number: 6284860Abstract: The present invention pertains to the preparation of organopolysiloxanes containing organyloxy groups by reacting organopolysiloxane(s) bearing terminal hydroxyl groups with an alkoxysilane having at least two alkoxy groups and a radical which contains at least one secondary or tertiary amino group bonded to silicon by a divalent C1-2 hydrocarbon radical, the reaction being catalyzed by an acidic ester of phosphoric acid having the formula (HO)aOP—(O—R7)3−a Where R7 is an oxyalkylated active hydrogen component, preferably an oxyalkylated fatty alcohol. RTV-1 compositions containing the reaction product exhibit extended storage life.Type: GrantFiled: January 20, 2000Date of Patent: September 4, 2001Assignee: Wacker-Chemie GmbHInventors: Oswin Sommer, Wolfgang Hechtl, Stefan Oberneder, Norman Dorsch, Rudolf Heinrich
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Patent number: 6271167Abstract: Disclosed are a catalyst for polymerizing olefins containing a solid catalyst component containing titanium, magnesium and halogen as essential components (component (A)); an organic aluminum compound (component (B)); and a silane compound (component (C)) represented by general formula (1) wherein R1 and R2 independently represent a straight, branched or cyclic saturated aliphatic hydrocarbon group or a silyl group, a method of preparing polyolefins using the catalyst as well as novel trimethoxysilane compounds represented by the general formula (1) in which R1 is a straight saturated aliphatic hydrocarbon group having 2 to 10 carbon atoms, and R2 represents a methyl group. Use of the catalyst enables efficient production of polyolefins having a low molecular weight (MFR>20 (g/10 minutes)), a broad molecular weight distribution (MLMFR/MFR>22) and a high stereoregularity when applied to polymerization of olefins having 3 or more carbon atoms.Type: GrantFiled: January 5, 2000Date of Patent: August 7, 2001Assignee: Japan Polyolefins Co., Ltd.Inventors: Masaki Fushimi, Toshio Fujita, Shintaro Inazawa
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Patent number: 6268432Abstract: A filler/adhesive agent for display units containing a condensation reaction curable silicone composition including air oxidation-curable unsaturated compounds and for use as a filler or adhesive in display units whose construction is such that the cured product of said composition is exposed in the display section, which composition is capable of forming matte finished cured products with insignificant surface tact, is disclosed.Type: GrantFiled: September 30, 1999Date of Patent: July 31, 2001Assignee: Dow Corning Toray Silicone Co. Ltd.Inventors: Toshiki Nakata, Masayuki Onishi
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Patent number: 6265598Abstract: A hydrolyzable group end-blocked organopolysiloxane is prepared by reacting (A) an organopolysiloxane having a silanol group at each end of its molecular chain with (B) an organosilicon compound having hydrolyzable groups or a partial hydrolyzate thereof in the presence of (C) a condensation catalyst. Use is made of a vibratory mixer comprising a conduit through which a fluid flows in an axial direction and an agitating element disposed in the conduit for reciprocal motion in the flow direction. A reactant mixture of necessary components is introduced into the conduit where the components are vibro-agitated by the agitating element while reaction takes place.Type: GrantFiled: October 13, 2000Date of Patent: July 24, 2001Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Kenichi Kimura, Masatoshi Miyake, Nobuhiko Kodana
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Patent number: 6265476Abstract: Radiation-curable compositions, having high elongation at break and toughness after cure can include the following pre-mixture components: a) a polymer, oligomer or monomer having at least one (meth)acrylate functional group; b) an oligomer or monomer, exclusive of (meth)acrylate functional groups, having an ethylenically unsaturated functional group; and c) an elongation promoter; wherein the composition, after radiation-cure, has an elongation at break of at least about 200%. Glass substrates and optical fibers are coated with the radiation-curable composition. Monofilament fiber or a plurality of fiber filaments, such as sewing thread, are coated with the radiation-curable binder composition, which after cure, demonstrates high elongation at break.Type: GrantFiled: October 4, 1999Date of Patent: July 24, 2001Assignee: DSM N.V.Inventors: Vadim V. Krongauz, Michael G. Sullivan, Stephen C. Lapin, Edward J. Murphy
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Patent number: 6258969Abstract: A polyalkoxysiloxane of the following rational formula: SiOa(OR)b(OH)c wherein R is a C1-4 alkyl group, a=0.86 to 1.30, b=2.18 to 1.30, and c≦0.10.Type: GrantFiled: October 2, 1996Date of Patent: July 10, 2001Assignee: Mitsubishi Chemical CorporationInventors: Takeshi Sawai, Hanako Kato, Seiichiro Tanaka, Akihiro Takazawa, Haruo Katsumata, Hozumi Endo
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Patent number: 6255516Abstract: Fluoroalkyl organosilicon compounds are prepared by reacting fluoroolefins with organosilicon compounds that contain at least one H-Si group, in the presence of a Pt(0) complex catalyst. Further, fluoroalkylalkoxy organosilicon compounds are prepared by esterifying fluoroalkyl organosilicon compounds. The process proceeds uniformly under mild conditions with high yields and selectivities.Type: GrantFiled: December 9, 1998Date of Patent: July 3, 2001Assignee: Huels AktiengesellschaftInventors: Peter Jenkner, Albert-Johannes Frings, Michael Horn, Jaroslaw Monkiewicz, Burkhard Standke
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Patent number: 6254811Abstract: Alkoxy RTV-1 compositions comprise the product of the reaction of (A) an HO-terminated organopolysiloxane, (B1) an alkoxysilane which has at least three alkoxy groups and/or its partial hydrolysates, and (B2) an alkoxysilane which has two alkoxy groups and/or its partial hydrolysates, in the presence of (C) an acid phosphoric ester of the general formula (I) (HO)aOP(—O—[(CR12)b—O]c[(CR22)d]e—L—M)(3−a) (I), where a is 1 or 2, R1 and R2 are a hydrogen radical, methyl radical or hydroxyl radical, b and d are 2 or 3, c is an integer from 2 to 15, e is 0 or 1 L comprises a radical —O—, —COO—, —OOC—, —CONR3—, —NR4CO— or —CO—, R3 and R4 are a hydrogen radical or C1-C10-alkyl radical, and M is a monovalent, unsubstituted or hydroxyl-, fluorine-, chlorine-, bromine-, C1-C10-alkoxyalkyl- or cyano-substituted C1-C20-hydrocarbon radical, with the proviso that on any givType: GrantFiled: December 1, 1999Date of Patent: July 3, 2001Assignee: Wacker-Chemie GmbHInventors: Christian Finger, Norman Dorsch, Wolfgang Hechtl, Christian Baumgartner, Alfred Heinrich
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Patent number: 6251981Abstract: The following polyalkoxysiloxane compounds (A) and (B): (A): polyalkoxysiloxane compounds represented by the rational formula SiOx(OR1)y(OR2)z, wherein z/(y+z)=0.05 to 0.5 by mole, 0.5≦x≦1.5, 2x+y+z=4, R1 is a methyl group and/or an ethyl group, and R2 is an organic group different from R1; (B): polyalkoxysiloxane compounds represented by the rational formula SiOx(OR1)y(OR2)z, wherein 0.5≦x≦1.5, 2x+y+z=4, R1 is a methyl group and/or an ethyl group, and R2 is at least one of the alkyl groups having 3 to 4 carbon atoms; are provided. These polyalkoxysiloxane compounds can be used advantageously for the coat-forming compositions or aqueous emulsion-forming compositions.Type: GrantFiled: November 8, 1999Date of Patent: June 26, 2001Assignee: Mitsubishi Chemical CompanyInventors: Seiichiro Tanaka, Takeshi Sawai, Hiroshi Kobayashi, Kenji Ooba, Makiko Sekiguchi, Nobuyuki Matsuzoe, Haruo Katsumata
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Patent number: 6251486Abstract: An improved siloxane-based composition for use as a low &kgr; dielectric material in integrated circuit applications is provided, the composition exhibiting desirable thermal mechanical stability compared to conventional siloxane-based low-&kgr; compositions. Specifically, the invention provides a modified methylsilsesquioxane composition suitable for higher temperature applications than a composition formed from only methylsilsesquioxane. The modified oligomer is characterized by the pendant group ratio A:B:C, where A represents the percentage of pendant groups that are methyl and is about 13 to about 67, B represents the percentage of pendant groups that are dimethyl and is greater than 0 to about 33, and C represents the percentage of pendant groups that are phenyl and is greater than 0 to about 67. The presence of dimethyl and phenyl pendant groups provides a molecular structure that has improved crack-resistance compared to an all-methyl silsesquioxane.Type: GrantFiled: July 11, 1999Date of Patent: June 26, 2001Assignee: Agere Systems Guardian Corp.Inventors: Edwin Arthur Chandross, Valerie Jeanne Kuck
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Patent number: 6248854Abstract: An epoxysiloxane condensate is modified by means of an in situ reaction with an organic compound, which is di-functional or multifunctional if warranted. By means of the disclosed method, the characteristics of epoxysiloxane condensates, epoxy resin mixtures, epoxy resin formulations and molded bodies manufactured therefrom can be varied easily and economically.Type: GrantFiled: January 26, 1999Date of Patent: June 19, 2001Assignee: Siemens AktiengesellschaftInventors: Klaus Höhn, Ernst Wipfelder
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Patent number: 6235832Abstract: A room temperature vulcanizing (RTV) silicone composition curable in the presence of moisture with rapid development of green strength. The RTV silicone composition comprises (A) 0 to about 85 weight percent polydiorganosiloxanes comprising on average at least 1.2 chain terminations per molecule selected from the group consisting of hydroxysilyl groups and alkoxysilyl groups; (B) about 10 to 95 weight percent polydiorganosiloxanes comprising on average at least 1.Type: GrantFiled: December 8, 1999Date of Patent: May 22, 2001Assignee: Dow Corning CorporationInventors: Qin Deng, Robert Harold Krahnke, Loren Dale Lower, Timothy B. Lueder, Richard Alan Palmer, Nick Evan Shephard
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Patent number: 6232424Abstract: Soluble silicone resin compositions having good solution stability and a method for their preparation.Type: GrantFiled: December 13, 1999Date of Patent: May 15, 2001Assignee: Dow Corning CorporationInventors: Bianxiao Zhong, Russell Keith King, Kyuha Chung, Shizhong Zhang
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Patent number: 6225490Abstract: For the continuous hydrolysis of organochlorosilane, a reaction system comprising at least three stages of hydrolysis is used. Each stage includes a reactor and a phase separator wherein hydrolysis is effected to form a hydrolysis mixture which is separated into a hydrolyzate and a hydrogen chloride-containing aqueous medium. The separated aqueous medium is circulated to the reactor. The hydrolyzate is conveyed to the reactor of the subsequent stage. The organochlorosilane is fed into the first stage reactor, the aqueous medium containing an amount of water corresponding to the consumption in one stage is fed into one stage reactor from the subsequent stage, and an amount of water corresponding to the consumption in the overall reaction system is fed in the last stage. Then the entire amount of hydrogen chloride generated in multiple stages of hydrolysis is recovered as anhydrous hydrogen chloride from the first stage.Type: GrantFiled: May 27, 1998Date of Patent: May 1, 2001Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Hiroshi Nakayama, Naoyuki Ida, Hiroyuki Kobayashi, Yukinori Satoh, Yoshihiro Shirota, Masaaki Furuya
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Patent number: 6224946Abstract: This invention relates to novel suspensions containing (a) 30 to 95 wt. % of water, (b) 70 to 5 wt. % of at least one silane or siloxane having at least two groups corresponding to formula (I) —(CH2)mSiRnX3-n (I) wherein R denotes C1-C18 alkyl and/or C6-C20 aryl, X denotes OH, C1-C4 alkoxy, C6-C20 aryloxy, C1-C6 acyloxy and/or hydrogen, m is 1 to 6, and n is 0 to 2, (c) 0.1 to 30 wt. % of at least one emulsifier, and (d) 0 to 20 wt. % of one or more additives and/or auxiliary substances, with the proviso that the sum of components (a) to (d) totals 100 wt. %. The present invention further relates to the preparation and use of such suspensions.Type: GrantFiled: May 24, 1999Date of Patent: May 1, 2001Assignee: Bayer AktiengesellschaftInventors: Stephan Kirchmeyer, Markus Mechtel, Michael Mager
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Patent number: 6218499Abstract: A curable composition comprising (A) a fluorinated organic silicon compound of the formula: Z—R1—Rf—R1—Z wherein Rf is a divalent fluorinated polyether group, R1 is a divalent hydrocarbon group, and Z is a silyl or siloxane group terminated with OH, (B) an organic silicon compound as a crosslinking agent, and (C) a condensation accelerator is curable to depth at room temperature even in the absence of moisture.Type: GrantFiled: February 23, 1999Date of Patent: April 17, 2001Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Yasuo Tarumi, Shinichi Sato, Noriyuki Koike, Takashi Matsuda, Masatoshi Arai
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Patent number: 6211307Abstract: An organopolysiloxane composition comprising (A) 80-95 parts by weight of a silicone resin comprising units of R3SiO1/2 and SiO4/2 in a molar ratio of from 0.6/1 to 1.1/1, wherein R typically represents methyl, (B) 5-20 parts by weight of a diorganopolysiloxane, and (C) from more than 40 to 500 parts by weight of an organic solvent is applied to various substrates and fired into a ceramic film having improved heat resistance and adhesion.Type: GrantFiled: October 13, 1999Date of Patent: April 3, 2001Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Motoaki Iwabuchi, Masaaki Yamaya
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Patent number: 6166121Abstract: A curable organopolysiloxane composition that can form a cured product that is strongly adhesive to substrates such as glasses, plastics, and metals and exhibits a very durable adhesion in which adhesiveness is maintained even under severe conditions such as immersion in hot water. The curable organopolysiloxane composition comprises from 1 to 75 weight % of a calcium carbonate powder whose surface has been treated with both (a) a rosin or a rosin derivative and (b) a fatty acid or a fatty acid derivative.Type: GrantFiled: April 23, 1999Date of Patent: December 26, 2000Assignee: Dow Corning Toray Silicone Co., Ltd.Inventors: Wataru Nishiumi, Seiji Hori
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Patent number: 6147156Abstract: A silicone resin-containing emulsion composition is based on a silicone resin-containing emulsion obtained by emulsion polymerization of a mixture containing (A) a silanol group-bearing silicone resin and (B) a radical-polymerizable vinyl monomer. The silicone resin (A) contains 30-100 mol % of T units: R.sup.1 --SiZ.sub.3, and specifically 30-80 mol % of T-2 units: R.sup.1 --Si(OH)Z'.sub.2 among other T units wherein R.sup.1 is a monovalent hydrocarbon group, Z is a OH group, hydrolyzable group or siloxane residue, and Z' is a siloxane residue, and has a number average molecular weight of at least 500. The composition has a good film forming ability and cures into a flexible film having mar, weather and chemical resistance.Type: GrantFiled: March 12, 1999Date of Patent: November 14, 2000Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Masaaki Yamaya, Masahiro Furuya, Hiroaki Kizaki, Akira Yamamoto
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Patent number: 6127502Abstract: A polyorganosiloxane comprising at least one organofunctional group per molecule having multiple hydrolyzable groups. The organofunctional group is described by formula --Z.sub.b --R.sup.4 (Z--SiR.sup.2.sub.n X.sub.3-n).sub.a, where each R.sup.2 is an independently selected monovalent hydrocarbon radical comprising 1 to about 18 carbon atoms; each Z is independently selected from the group consisting of divalent hydrocarbon radicals comprising about 2 to 18 carbon atoms and a combination of divalent hydrocarbon radicals and siloxane segments; R.sup.4 is independently selected from the group consisting of a silicon atom and a siloxane radical comprising at least two silicon atoms and each Z is bonded to a silicon atom of R.sup.4 with the remaining valences of the silicon atoms of R.sup.Type: GrantFiled: December 21, 1998Date of Patent: October 3, 2000Assignee: Dow Corning CorporationInventors: Robert Harold Krahnke, Timothy B. Lueder, Richard Alan Palmer, Nick Evan Shephard
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Patent number: 6069259Abstract: A composition relating to an oligomeric alkoxy siloxane substituted with polymerizible epoxy or 1-alkenyl groups, and a process for the production of that composition, are disclosed. The process entails a hydrolysis-condensation oligomerization of an epoxy- or 1-alkenyl ether-functional trialkoxy silane, catalyzed by an ion exchange resin, and separation of the resin from the resulting oligomer.Type: GrantFiled: February 6, 1998Date of Patent: May 30, 2000Assignee: Rensselaer Polytechnic InstituteInventor: James Vincent Crivello
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Patent number: 5998651Abstract: A method for forming alkyl silicate easily at low costs. The method comprises a reaction step of mixing and reacting an aqueous solution of sodium silicate, and a solution of alcohol or alkyl halide in a water-insoluble organic solvent, in the presence of a catalyst; and an isolating step of separating an organic layer from the reactive mixed solution and isolating a reaction product from the organic layer.Type: GrantFiled: March 12, 1999Date of Patent: December 7, 1999Assignee: Hiroshi OkamotoInventors: Hiroshi Okamoto, Shin-ichi Inoue
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Patent number: 5932757Abstract: A mixture of oligomers of alkylalkoxysilanes condensed in the chain and/or cyclic form, said mixture of oligomers containing less than 2% by weight of free alcohols and the condensed alkoxysilanes satisfying formula I: ##STR1## wherein R is an alkyl group having 3 to 18 carbon atoms, and each R' is a member (i) selected from the group consisting of methyl, ethyl or hydrogen, or is (ii) methyl or hydrogen, or is (iii) ethyl or hydrogen, the degree of oligomerization being in the range 2.ltoreq.x.ltoreq.20 and the quotient of the molar ratio ?Si/alkoxy group!.gtoreq.1; and/orsatisfying formula II: ##STR2## in which R is an alkyl group having 3 to 18 carbon atoms, and each R' is a member (i) selected from the group consisting of methyl, ethyl or hydrogen, or is (ii) methyl or hydrogen or is (iii) ethyl or hydrogen, the degree of oligomerization being x.gtoreq.3 and the quotient of the molar ratio ?Si/alkoxy group!.gtoreq.1.Type: GrantFiled: June 17, 1997Date of Patent: August 3, 1999Assignee: Huls AktiengesellschaftInventors: Burkhard Standke, Roland Edelmann, Albert Frings, Michael Horn, Peter Jenkner, Ralf Laven, Jaroslaw Monkiewicz, Lothar Elfenthal, Hans-Hermann Luginsland
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Patent number: 5882387Abstract: The present invention relates to a wipe-on polish composition which contains no wax or abrasive components. The polish requires minimal effort to wipe out to a thin, glossy, streak-free, hydrophobic film. The polish is comprised of an emulsion that contains an organopolysiloxane and a volatile diluent.Type: GrantFiled: August 6, 1997Date of Patent: March 16, 1999Assignee: Wacker Silicones CorporationInventors: Eugene R. Martin, Michael D. Lowery
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Patent number: 5869728Abstract: Fluoroalkyl organosilicon compounds are prepared by reacting fluoroolefins with organosilicon compounds that contain at least one H--Si group, in the presence of a Pt(0) complex catalyst. Further, fluoroalkylalkoxy organosilicon compounds are prepared by esterifying fluoroalkyl organosilicon compounds. The process proceeds uniformly under mild conditions with high yields and selectivities.Type: GrantFiled: October 21, 1997Date of Patent: February 9, 1999Assignee: Huels AktiengesellschaftInventors: Peter Jenker, Albert-Johannes Frings, Michael Horn, Jaroslaw Monkiewicz, Burkhard Standke
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Patent number: 5651921Abstract: A water repellent silica sol comprises colloidal silica particles of a size of 100 nm or less whose surfaces have been made water-repellent by an organic group-substituted silane. The water repellent silica sol is produced by a process which comprises reacting a silica colloid dispersed in a non-polar organic solvent with an organic group-substituted silane so that the surfaces of the colloidal silica particles are made water-repellent by the organic group-substituted silane. Alternatively, the water repellent silicate sol is prepared by a process which comprises adding a non-polar organic solvent, a cationic surface active agent and an organic group-substituted silane to a water-dispersed silica colloid, forming an emulsion therefrom, removing water from the emulsion by azeotropic dehydration and refluxing the emulsion under heating.Type: GrantFiled: July 28, 1994Date of Patent: July 29, 1997Assignee: Idemitsu Kosan Company LimitedInventor: Akira Kaijou
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Patent number: 5605997Abstract: A process of producing an organopolysiloxane, comprising hydrolyzing and condensing an alkoxysilane having the formula:R.sub.m Si(OR.sup.1).sub.4-mwherein R is a monovalent hydrocarbon group, R.sup.1 is an alkyl group and m is an integer of 0 to 3, or a partial hydrolysis-condensation product thereof, in the presence of a fluorine compound selected from the group consisting of fluoride salt compounds and fluorine-containing silicon compounds having at least one Si-F bond in its molecule. The organopolysiloxane obtained contains little silanol groups and has a narrow molecular weight distribution. Therefore, curable silicone resin compositions containing the organopolysiloxane as a raw material have good shelf stability, drying characteristics and curability, and are free of fear of catching fire or contamination of surroundings. An organopolysiloxane having a variety of functional groups can be readily produced.Type: GrantFiled: October 5, 1995Date of Patent: February 25, 1997Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Kenji Yamamoto, Masaaki Yamaya
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Patent number: 5478546Abstract: An alkoxysilane is brought into a hydrolysis-polycondensation reaction using a fluoride salt, e.g. NaF, or a fluorine-containing silicon compound having an Si--F bond in its molecule, e.g. FSi(OCH.sub.3).sub.3, as a catalyst, to produce a powder of a silicon compound such as silica. The process reduces markedly the period of time required for the hydrolysis-polycondensation reaction and yields a porous silicon compound powder with low bulk specific gravity. The catalyst is excellent in handleability and safety.Type: GrantFiled: March 11, 1994Date of Patent: December 26, 1995Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Kazuyuki Matsumura, Masaaki Yamaya
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Patent number: 5346968Abstract: Oligosiloxanes of the formula I ##STR1## where R.sup.1 is a C.sub.1 -C.sub.4 -alkyl andn is from 2 to 50,are chiefly used for fabricating fiber-reinforced composite and ceramic materials.Type: GrantFiled: December 1, 1993Date of Patent: September 13, 1994Assignee: BASF AktiengesellschaftInventor: Karl-Heinz Haas
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Patent number: 5233067Abstract: A method for metallizing a polymeric substrate is disclosed. The method includes contacting a surface of an etched polymeric substrate with a silane coupling agent and depositing a metallic layer over the surface. The silane coupling agent forms a chemical linkage between the substrate and the metallic layer. A coupling agent composition and a metallized polymeric substrate are also described.Type: GrantFiled: May 8, 1990Date of Patent: August 3, 1993Assignee: Rogers CorporationInventors: Gwo Swei, Kenneth W. Kristal
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Patent number: 5223636Abstract: A partially alkoxylated polysiloxane is prepared by using a reactor kettle equipped with a reaction column and a reflux condenser, charging the kettle with a lower alkoxysilane where the kettle liquid is kept boiling, continuously feeding a halogenated lower alkylsilane into the kettle through the column top and continuously feeding a mixture of water and a monohydric alcohol into the kettle in controlled rates, completely alkoxylating the halogenosilane with the alcohol within the column to continuously yield an alkoxysilane, hydrolyzing the alkoxysilane, with the hydrogen halide by-produced during alkoxylation acting as a catalyst, and withdrawing a partially alkoxylated polysiloxane containing less than 5% by weight of the alcohol from the kettle.Type: GrantFiled: January 17, 1992Date of Patent: June 29, 1993Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Takeo Koshimura, Mikio Endo, Toshinobu Ishihara
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Patent number: 5183914Abstract: The present invention relates to a novel method of preparing alkoxysilanes and oligomeric alkoxysiloxanes. The method comprises reacting a metal silicate with an acid selected from the group consisting of sulfurous acid and acids with a pKa greater than about 2.5 in the presence of an alcohol. The resultant product is then reacted with an alcohol to form the alkoxysilane or oligomeric alkoxysiloxane, depending on the starting silicate. This method is particularly valuable since the reaction conditions are mild and the reactants are readily available.Type: GrantFiled: April 29, 1991Date of Patent: February 2, 1993Assignees: Dow Corning Corporation, Case Western Reserve UniversityInventors: Li-Tain Yeh, Malcolm E. Kenney, Gary N. Bokerman, John P. Cannady, Ollie W. Marko
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Patent number: 5166384Abstract: In a trimethoxysilane preparation from silicon metal and methanol which preparation uses a solvent, a method for removing a siloxane dissolved in the solvent, which method comprises contacting the solvent with a boron-oxygen compound, and optionally an alkali metal alkoxide such as sodium methoxide.Type: GrantFiled: April 7, 1992Date of Patent: November 24, 1992Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Donald L. Bailey, Thomas E. Childress, Robert L. Ocheltree, James S. Ritscher
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Patent number: 4778909Abstract: Fast high resolution separations of biopolymers with retention of biological activity have been achieved by hydrophobic interaction chromatography using trialkoxy silyl ethers of the general formula(RO).sub.3 Si--(CH.sub.2).sub.m --O--(CH.sub.2 CH.sub.2 O).sub.n --(CH.sub.2).sub.p R'chemically bonded to silica-based chromatographic supports. In the formula R is alkyl of from one to five carbons, m is an integer from two to five, n is an integer from one to five, p is an integer from zero of ten, and R' is methyl, phenyl, or substituted phenyl. Stable and reproducible bonded phases are prepared in a novel solventless procedure by a bonding process which uses a defined and controlled amount of water on the silica surface and a gaseous or volatile basic catalyst such as ammonia to produce a controlled amount of silane polymerization and cross-linking in addition to extensive bonding between silane and silica.Type: GrantFiled: May 11, 1984Date of Patent: October 18, 1988Assignee: Northeastern UniversityInventors: Barry L. Karger, Binyamin Feibush, Neil T. Miller, Alvaro Figueroa
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Patent number: 4717773Abstract: A method for the preparation of alkoxysilanes and alkoxysiloxanes from a silicate material, and for the further conversion to organosilanes and organosiloxanes. Methods for the preparation of silicate starting materials are also disclosed.Type: GrantFiled: October 4, 1985Date of Patent: January 5, 1988Inventors: Malcolm E. Kenney, George B. Goodwin
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Patent number: 4684709Abstract: Organopolysiloxane compounds containing at least one silicon-bonded, epoxy-terminated polyoxyalkylene group are useful for treating materials to provide hydrophilicity for the materials.Type: GrantFiled: February 25, 1986Date of Patent: August 4, 1987Assignee: Toray Silicone Co., Ltd.Inventors: Isao Ona, Masaru Ozaki, Tadashi Fujii
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Patent number: 4658006Abstract: A diorganopolysiloxane terminated at both molecular chain ends each with a monohydrocarbyl dialkoxy silyl group, which is useful as a base ingredient in room temperature-curable silicone rubber compositions, is prepared by first reacting a silanol-terminated diorganopolysiloxane with a monohydrocarbyl tri(ketoxime) silane to replace the silanolic hydroxy group with a monohydrocarbyl di(ketoxime) siloxy group and then reacting the oxime-terminated diorganopolysiloxane with a monohydric alcohol, e.g. methyl alcohol, to replace the ketoxime groups with alkoxy groups. The reactions can proceed under very mild conditions without any catalyst so that the desired alkoxy-terminated diorganopolysiloxane is obtained in a high purity.Type: GrantFiled: March 31, 1986Date of Patent: April 14, 1987Assignee: Shin-Etsu Chemical Co., Ltd.Inventor: Yoshio Inoue
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Patent number: 4644077Abstract: In a silica organosol consisting of silica dispersed in a water-miscible organic solvent, a process for treating the silica with a trialkoxysilane to make the silica more organophilic while minimizing the self condensation of the trialkoxy silane, which process comprises:(a) admixing water and a catalytic amount of acid to the silica organosol; and(b) gradually adding a trialkoxysilane to the admixture under reactive conditions; and(c) removing substantially all of the water;wherein the trialkoxy silane is present at a level up to about 30% by weight based upon the weight of the silica and the water is added at an amount up to about 30% by weight based upon the weight of the water-miscible organic solvent.Type: GrantFiled: September 18, 1985Date of Patent: February 17, 1987Assignee: The Sherwin-Williams CompanyInventor: Goutam Gupta
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Patent number: 4474933Abstract: The present invention relates to resin mixtures which are fluid at temperatures up to 100.degree. C. and which crosslink either at elevated temperature or under the influence of moisture. Thermal crosslinking takes place at temperatures of 100.degree. C. and up, preferably at about 120.degree. C. The mixtures contain one or more mutually compatible polymers containing hydroxyl groups, in which at least 5% and not more than 90% of the hydroxyl groups are replaced by alkoxysilyl groups. The introduction of the alkoxysilyl groups is accomplished by the reaction of a diisocyanate with a hydroxyl group on the polymer, on the one hand, and with an aminosilane or mercaptosilane ester on the other. On the basis of their fluid-to-viscous consistency at room temperature or moderately elevated temperature, the resins can be applied in a thin coating and easily crosslinked in situ.Type: GrantFiled: June 2, 1983Date of Patent: October 2, 1984Assignee: Dynamit Nobel AGInventors: Hans Huber, Eduard Hansel, Gerhard Geier
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Patent number: 4399193Abstract: Hydrophilic coatings are obtained by applying to a substrate a composition containing an aqueous soluble organopolysiloxane which is capable of being crosslinked by the addition of Si-bonded hydrogen atoms to SiC-bonded aliphatic multiple bonds, and having at least one oxyalkylene unit bonded to a silicon atom and an aqueous soluble catalyst which promotes the addition of Si-bonded hydrogen atoms to the SiC-bonded aliphatic multiple bonds and thereafter crosslinking the organopolysiloxane by the addition of the Si-bonded hydrogen atoms to the SiC-bonded aliphatic multiple bonds to form a hydrophilic coating on the substrate. The aqueous soluble organopolysiloxane may be obtained from a mixture consisting of equal parts of a mixed hydrolysate, prepared from 1.7 moles of dimethyldichlorosilane, 1 mole of [acetoxy-(hexaethyleneoxy)propyl]-methyldichlorosilane and 0.Type: GrantFiled: August 24, 1981Date of Patent: August 16, 1983Assignee: Wacker-Chemie GmbHInventors: Gerhard Preiner, Johann Muller, Karl-Heinrich Wegehaupt
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Patent number: 4395563Abstract: Alkoxysilanes are hydrolyzed with water in the presence of various hydrolysis catalysts. The hydrolysis catalysts include the solid oxides of the Group IIa metals and solid acid catalysts. The solid acid catalysts are used in conjunction with neutralizing agents and optionally with condensation catalysts.Generally, the process for hydrolyzing alkoxysilanes comprises: mixing an alkoxysilane, a stoichiometric excess of water and an effective catalytic amount of hydrolysis catalyst selected from the group consisting of a solid oxide of a Group IIa metal, a solid acid catalyst and mixtures thereof; neutralizing the hydrolysis mixture with a sufficient amount of neutralizing agent, for example, magnesium oxide; and separating the hydrolysis product from the mixture. When a Group IIa metal oxide hydrolysis catalyst is used, the liquid portion of the hydrolysate is neutral, and no additional neutralizing agent is required in the mixture.Type: GrantFiled: October 29, 1981Date of Patent: July 26, 1983Assignee: General Electric CompanyInventor: Susan E. Hayes