Patents Examined by Melvyn I. Marquis
  • Patent number: 5977248
    Abstract: Gels, cast films, coatings, extruded rods, extruded fibers, compression molded discs, and machined compression molded discs, are made from organopolysiloxane sheet or tube polymers such as an apophyllite-derived 3-cyanopropyldimethyl siloxy sheet polymer of the formula [((NCC.sub.3 H.sub.6)(CH.sub.3).sub.2 SiO).sub.x (HO).sub.1-x SiO.sub.1.5 ].sub.n. Polymers are prepared by contacting sheet or tube silicates with an organohalosilane containing at least one polar group such as cyanoalkyl, acyloxy, or haloalkyl, in the presence of a polar solvent or a mixture of a polar solvent and a non-polar solvent; and heating the mixture until a polymer is formed.
    Type: Grant
    Filed: June 3, 1998
    Date of Patent: November 2, 1999
    Assignees: Dow Corning Corporation, Case Western Reserve University
    Inventors: Chenggang Chen, Dimitris Elias Katsoulis, Malcolm Edward Kenney
  • Patent number: 5977225
    Abstract: The rubber mixtures according to the invention, containing at least one rubber, a filler, optionally additional rubber auxiliaries and at least one polysulphide polyether silane corresponding to the formulaR.sup.1 R.sup.2 R.sup.3 Si--X.sup.1 --(--S.sub.x --polyether --).sub.m --(--S.sub.x --X.sup.2 --SiR.sup.1 R.sup.2 R.sup.3).sub.n (I),are used for the preparation of rubber vulcanisates, from which in particular tires having a low rolling resistance associated with a good wet skid resistance and a high abrasion resistance can be produced.
    Type: Grant
    Filed: March 4, 1998
    Date of Patent: November 2, 1999
    Assignee: Bayer AG
    Inventors: Thomas Scholl, Hermann-Josef Weidenhaupt, Heinrich Konigshofen, Ulrich Eisele
  • Patent number: 5977249
    Abstract: The present invention relates to compositions which crosslink to give elastomers, comprising;(A) a polyorganosiloxane (I) with at least two alkenyl groups per molecule and a metallic catalyst (IV) and(B) a polyorganosiloxane (II) with at least two silicon-bonded hydrogen atoms and an organic sulfur compound (III).
    Type: Grant
    Filed: July 14, 1997
    Date of Patent: November 2, 1999
    Assignee: Wacker-Chemie GmbH
    Inventors: Ingomar Kovar, Johann Kammerer, Klaus-Michael Matejcek, Erhard Bosch, Walter Strassberger
  • Patent number: 5976700
    Abstract: An aqueous coating composition and a method of coating a metal substrate are provided. The composition and method are particularly suitable for use in coating can bodies and can ends or for-can side seam coatings. The coating composition includes a solvent component and a film forming component. The solvent component includes water and an organic solvent. The film forming component includes a curing agent and the product of the reaction of a carboxy addition polymer and an epoxy resin in the presence of a tertiary amine catalyst.
    Type: Grant
    Filed: May 7, 1997
    Date of Patent: November 2, 1999
    Assignee: The Valspar Corporation
    Inventors: Mary Jo Chutko, Phillip C. Martino
  • Patent number: 5972432
    Abstract: An aqueous coating composition and a method of coating a metal substrate are provided. The composition and method are particularly suitable for use in coating can bodies and can ends or for can side seam coatings. The coating composition includes a solvent component and a film forming component. The solvent component includes water and an organic solvent The film forming component includes a curing agent and the product of the reaction of a carboxy addition polymer and an epoxy resin in the presence of a tertiary amine catalyst.
    Type: Grant
    Filed: July 14, 1997
    Date of Patent: October 26, 1999
    Assignee: Valspar Corporation
    Inventors: Mary Jo Chutko, Phillip C. Martino
  • Patent number: 5973058
    Abstract: A silicone rubber composition that does not foam or evolve an unpleasant odor during its cure and that cures into low-surface-tack, non-yellowing silicone rubber moldings comprises:(A) polydiorganosiloxane gum with the average component formula R.sub.a SiO.sub.(4-a)/2 where R represents substituted and unsubstituted monovalent hydrocarbon groups and a is from 1.9 to 2.1,(B) microparticulate silica,(C) bis(ortho-methylbenzoyl)peroxide, and(D) bis(para-methylbenzoyl)peroxide,wherein the component (C) to component (D) weight ratio is from 1:9 to 8:2.
    Type: Grant
    Filed: October 28, 1997
    Date of Patent: October 26, 1999
    Assignee: Dow Corning Toray Silicone Co., LTD.
    Inventors: Katsuya Baba, Kazuo Hirai, Takao Matsushita
  • Patent number: 5972516
    Abstract: An object of the invention is to provide a method of producing an optical waveguide comprising a siloxane-containing polymer film, capable of controlling a refractive index easily and finely, and an optoelectronic hybrid substrate using the optical waveguide, capable of controlling a refractive index easily and finely, and reducing the effect of the surface roughness of the substrate. In particular, it relates to a method of producing an optical waveguide comprising a siloxane-containing polymer film containing a metal obtained by the thermal polymerization of a siloxane-containing polymer film formation solution added with a metal alkoxide on a substrate, and an optoelectronic hybrid substrate comprising a combination of an optical waveguide produced as mentioned above, a photoelectric element and an electric circuit on a ceramic substrate.
    Type: Grant
    Filed: February 27, 1997
    Date of Patent: October 26, 1999
    Assignee: Kyocera Corporation
    Inventors: Katsuhiro Kaneko, Shigeo Tanahashi
  • Patent number: 5973030
    Abstract: Liquid silicone rubber compositions that prior to cure have good fluidity and excellent moldability and that cure into a highly flame retardant silicone rubber with excellent high-voltage electrical insulating properties. The liquid silicone rubber compositions comprise: (A) polyorganosiloxane; (B) fumed silica; (C) surface-treated zinc carbonate powder as afforded by treating the surface of (a) zinc carbonate powder or basic zinc carbonate powder with (b) an organosilicon compound selected from organosilanes, organosilazanes, and organosiloxane oligomers; (D) polyorganohydrogensiloxane; and (E) platinum catalyst. The liquid silicone rubber compositions may further comprise (F) surface treated aluminum hydroxide powder, (G) triazole compound, and (H) a reaction mixture of (d) platinum compound and (e) 3,5-dimethyl-1-hexyn-3-ol.
    Type: Grant
    Filed: May 22, 1997
    Date of Patent: October 26, 1999
    Assignee: Dow Corning Toray Silicon Co., Ltd.
    Inventors: Takao Matsushita, Yasumichi Shigehisa, Yuichi Tsuji
  • Patent number: 5973095
    Abstract: Novel processes for preparing hydridosiloxane and organohydridosiloxane resins are disclosed. The processes of the invention broadly provide for the steps of contacting a silane monomer with a solid state catalyst in the presence of a reaction mixture that includes a nonpolar, e.g., hydrocarbon, solvent, and a polar solvent, e.g., alcohol and water. The process is conducted under conditions effective to catalytically convert said silane monomer into hydridosiloxanes and organohydridosiloxanes. Recovery of the products is advantageously aided by the ease of separating the solid state catalyst from the reaction mixture. Hydridosiloxanes and organohydridosiloxanes resins produced by the processes of the invention are also provided.
    Type: Grant
    Filed: April 6, 1998
    Date of Patent: October 26, 1999
    Assignee: AlliedSignal, Inc.
    Inventors: Nigel P. Hacker, Todd Krajewski, Scott Lefferts
  • Patent number: 5973044
    Abstract: This invention relates to organosilicon compositions useful as adhesion promoters for curable organopolysiloxanes, said organosilicon compositions being formed by reacting (A) a polyhydric alcohol, (B) an organosiloxane containing at least one organofunctional group and one hydroxyl or hydrolyzable group per molecule and (C) a silane containing at least three hydrolyzable groups per molecule.
    Type: Grant
    Filed: August 28, 1998
    Date of Patent: October 26, 1999
    Assignee: Dow Corning Corporation
    Inventors: Michael Andrew Lutz, Michael James Owen, Susan Victoria Perz
  • Patent number: 5969076
    Abstract: Thermoplastic silicone-containing composition are useful as a hydrogel contact lens material. The compositions are based on polymers including a siloxane segment and a highly hydrophilic segment.
    Type: Grant
    Filed: May 15, 1998
    Date of Patent: October 19, 1999
    Assignee: Bausch & Lomb Incorporated
    Inventors: Yu-Chin Lai, Edmond T. Quinn
  • Patent number: 5969037
    Abstract: A room temperature curing composition of this invention comprises an emulsion obtained by multi-stage emulsion polymerization of monomers, the emulsion comprising emulsion particles, a core of which comprises (A) 1 to 30% by weight of silyl group-containing vinyl monomer, (B) 70 to 99% by weight of vinyl monomer copolymerizable with component (A), the outermost shell of which comprises (A) 0.1 to 30% by weight of silyl group-containing vinyl monomer and (B) 40 to 99.4% by weight of vinyl monomer copolymerizable with component (A), and (D) 0.5 to 30% by weight of hydrophilic vinyl monomer. The room temperature curing composition of this invention has a stable silyl group, and a much improved film-forming ability after long-term storage and it also shows excellent mechanical stability, water-resistance, durability and white enamel gloss.
    Type: Grant
    Filed: February 25, 1998
    Date of Patent: October 19, 1999
    Assignee: Kanegafuchi Chemical Industry Co., Ltd.
    Inventors: Takanori Hatano, Naotami Ando
  • Patent number: 5969036
    Abstract: In accordance with the present invention, there are provided novel compositions for attaching semiconductor devices to substrates. Invention compositions comprise liquid monomer vehicle comprising hydrophobic cyanate ester monomer(s) and epoxy monomer(s), electrically and/or thermally conductive filler, a metal catalyst, and an imidazole, preferably in the substantial absence of non-reactive diluents.
    Type: Grant
    Filed: June 20, 1997
    Date of Patent: October 19, 1999
    Assignee: The Dexter Corporation
    Inventor: Stephen M. Dershem
  • Patent number: 5969075
    Abstract: 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: Grant
    Filed: July 13, 1998
    Date of Patent: October 19, 1999
    Assignees: Shin-Etsu Silicones of America, Shin-Etsu Chemical Co., Ltd.
    Inventor: Yoshifumi Inoue
  • Patent number: 5969072
    Abstract: Carborane-silane/siloxane compounds having unsaturated organic end groups e represented by the formula: ##STR1## wherein: u and x are independently selected positive integers, v and w are independently selected integers greater than or equal to zero, R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7 and R.sup.8 are independently selected from the group consisting of alkyl, aryl, alkylaryl, haloalkyl, haloaryl and mixtures thereof; A and E are independently selected from the group consisting of O, an aliphatic bridge, an aryl bridge and mixtures thereof; and R.sup.9 and R.sup.10 are unsubstituted or substituted vinyl or ethynyl groups.
    Type: Grant
    Filed: February 27, 1998
    Date of Patent: October 19, 1999
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Teddy M. Keller, Eric J. Houser
  • Patent number: 5969073
    Abstract: Group 4 metal-containing organosilicon dendrimers are described. Also described are methods for synthesizing the dendrimers. The dendrimers can be useful in several applications including as olefin polymerization and copolymerization catalysts and as silane polymerization catalysts.
    Type: Grant
    Filed: April 10, 1997
    Date of Patent: October 19, 1999
    Assignee: Massachusetts Institute of Technology
    Inventors: Dietmar Seyferth, Ralf Wyrwa
  • Patent number: 5968246
    Abstract: An aqueous stabilized composition for the treatment of surfaces such as metals, particularly aluminum, comprises a tetraalkyl silicate or a monomeric or oligomeric hydrolysis product thereof, an inorganic passenger powder below 100 nanometer diameter such as fumed or colloidal silica and a stabilizer, all dispersed in a fluid aqueous medium. The stabilizer comprises a carboxylic acid polymer, copolymer or salt thereof, preferably an acrylic acid polymer, copolymer or salt thereof, and most preferably a polyacrylic acid.
    Type: Grant
    Filed: March 6, 1998
    Date of Patent: October 19, 1999
    Assignee: Betzdearborn
    Inventors: Gregory J. Pomrink, Brenda S. Morris
  • Patent number: 5965272
    Abstract: A storage-stable, curable film-forming composition is provided comprising: (i) a crosslinking agent selected from an aminoplast, a blocked polyisocyanate, and mixtures thereof; and (ii) a hydroxyl functional acrylic polymer further containing a plurality of alkoxysilane groups of the structure: ##STR1## wherein R.sub.1 is hydrogen or methyl, and R.sub.2 is a divalent group. The acrylic polymer is prepared in a solvent medium comprising an alcohol. The curable film-forming composition is suitable for use in color-plus-clear composite coating compositions.
    Type: Grant
    Filed: October 29, 1997
    Date of Patent: October 12, 1999
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Karen D. Donnelly, Charles M. Kania, Michael A. Mayo, William E. Michael, Shanti Swarup
  • Patent number: 5965649
    Abstract: A polyoxyethylene alkyl ether fatty acid amide modified organopolysiloxane composition is superior in terms of its feel in use, and in its surface-protecting characteristics, surface lubricating characteristics, and anti-static properties. The composition shows no degeneration over long periods of time. It is superior in terms of its mixing stability in cosmetic based agents, and in lustering agents, lubricating agents, defoaming agents, fiber treatment agents, and paint additives, and has a superior effect in improving their surface characteristics. The composition is a polyoxyethylene alkyl ether fatty acid amide modified organopolysiloxane composition containing an amidopolyether-modified organopolysiloxane and a polyoxyethylene alkyl ether fatty acid.
    Type: Grant
    Filed: April 21, 1998
    Date of Patent: October 12, 1999
    Assignee: Dow Corning Toray Silicon Co., Ltd.
    Inventors: Hidetoshi Kondo, Masahiro Takahashi
  • Patent number: 5965684
    Abstract: Photoluminescent polydisilacyclobutanes are made by reacting a dialkenyldihalocarbosilane with an organolithium reagent in the presence of a solvent at 0-25 .degree. C.
    Type: Grant
    Filed: October 15, 1997
    Date of Patent: October 12, 1999
    Assignee: Dow Corning Corporation
    Inventors: Norbert Auner, Udo C. Pernisz