With Ethylenically Unsaturated Reactant Patents (Class 524/862)
  • Patent number: 10047108
    Abstract: A process for the hydrosilylation of an unsaturated compound comprising reacting (a) a silyl hydride with (b) an unsaturated compound in the presence of (c) a platinum based hydrosilylation catalyst comprising a platinum-diene complex with chelating anions. The use of the present catalysts in the process provides silylated products in good yields and allows for using lower platinum loadings than conventional catalysts, reduced cycle times, and may reduce yellowing in the product.
    Type: Grant
    Filed: December 15, 2015
    Date of Patent: August 14, 2018
    Assignee: MOMENTIVE PERFORMANCE MATERIALS INC.
    Inventors: Julie L. Boyer, Aroop K. Roy, David Jenkins, Indraneel Kundu
  • Patent number: 9963577
    Abstract: Disclosed are a silicone rubber composition and a preparation method thereof. The silicone rubber composition comprises a polydimethylvinylsiloxane, a silica filler, a polymethylvinylsiloxane oil, a hydrogen-modified polyorganosiloxane, a platinum-based catalyst, and a polymethylhydrogensiloxane vulcanizing agent.
    Type: Grant
    Filed: July 20, 2015
    Date of Patent: May 8, 2018
    Assignees: HYUNDAI MOBIS CO., LTD., GRACE CONTINENTAL KOREA CO., LTD.
    Inventors: Byung Sub Park, Kang Won Seo, Jung Hwan Lee, Yong Chun, Sung Hoon Jin, Beum Keun Woo, David I. S Luan
  • Patent number: 9528027
    Abstract: Provided is a coating for preventing scattering of fragments, the coating containing, as main components, (A) a polysiloxane having at least two vinyl groups or (meth)acryloyl groups each bonded to a silicon atom, (B) a polysiloxane having at least two hydrogen groups each bonded to a silicon atom, (C) an addition reaction-accelerating catalyst, (D) an alkoxy oligomer, and (E) an organometallic catalyst containing at least one metal selected from zirconium, zinc, and magnesium.
    Type: Grant
    Filed: February 20, 2014
    Date of Patent: December 27, 2016
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Kenji Sakamoto, Koichi Sayo
  • Patent number: 9332982
    Abstract: The present invention provides improved medical devices for use in surgical procedures and methods for manufacturing improved medical devices. In some embodiments, the improved medical devices can include improved surgical needles that are capable of being repeatedly passed through tissue using minimal force. More particularly, the improved surgical needles can be manufactured with two or more different coatings that provide the surgical needles with both durability and lubricity for ease of repeated and successive passes through tissue. Improved methods for manufacturing the surgical needles and for providing and applying coatings to the surgical needles are also provided.
    Type: Grant
    Filed: August 18, 2010
    Date of Patent: May 10, 2016
    Assignee: Ethicon, LLC
    Inventors: Robert Maurer, S. Neil Bar, Eric Hinrichs, Michael Hamilton, Thomas Wilkes
  • Patent number: 9303164
    Abstract: A method of preparing a curable polyorganosiloxane composition including kneading a uniform mixture of an alkenyl group-containing polyorganosiloxane, a polyorganohydrogensiloxane, and a platinum group metal compound, and defoaming the kneaded mixture under reduced pressure, the alkenyl group-containing polyorganosiloxane includes a linear polyorganosiloxane of the formula (I): R is R1 or R2, and at least two Rs are R1; R1 is C2-C6 alkenyl; R2 is C1-C6 alkyl; and n is a value that yields a viscosity at 23° C. of 10 to 10,000 cPs, a branched polyorganosiloxane containing SiO4/2 and R?3SiO1/2 units, optionally a R?2SiO and/or a R?SiO3/2, R? represents a monovalent aliphatic or alicyclic, and at least three R? groups per molecule are alkenyls, the alkenyl group-containing polyorganosiloxane having a weight ratio of the branched to linear polyorganosiloxane of 1 to 5; and a number of hydrogens bonded to a silicon atom of the polyorganohydrogensiloxane exceeds 2.
    Type: Grant
    Filed: October 27, 2014
    Date of Patent: April 5, 2016
    Assignee: MOMENTIVE PERFORMANCE MATERIALS JAPAN LLC
    Inventor: Masanori Takanashi
  • Patent number: 9259219
    Abstract: The present invention provides novel medical devices for use in surgical procedures and methods for manufacturing novel medical devices. In some embodiments, the novel medical devices can include surgical needles that are capable of being repeatedly passed through tissue using minimal force. More particularly, the surgical needles can be manufactured with one or more coatings that provide the surgical needles with both durability and lubricity for ease of repeated and successive passes through tissue. Novel methods for manufacturing the surgical needles and for providing and applying coatings to the surgical needles are also provided.
    Type: Grant
    Filed: August 18, 2010
    Date of Patent: February 16, 2016
    Assignee: Ethicon, LLC
    Inventors: Robert Maurer, S. Neil Bar, Eric Hinrichs, Michael Hamilton, Thomas Wilkes
  • Patent number: 8999485
    Abstract: A liquid silicone rubber composition comprising an alkenyl group-containing liquid organopolysiloxane, a reinforcing silica filler, an organohydrogenpolysiloxane, a platinum group catalyst, a liquid organopolysiloxane that is free of crosslinking groups and is compatible with the alkenyl group-containing liquid organopolysiloxane, and a liquid organopolysiloxane that is free of crosslinking groups and is incompatible with the alkenyl group-containing liquid organopolysiloxane, wherein the cured material therefrom has a JIS type A durometer hardness of 15 to 26 and a tensile stress at 100% elongation of 0.25 to 0.60 MPa. Also, a through hole-containing sealing member comprising this cured material.
    Type: Grant
    Filed: December 28, 2010
    Date of Patent: April 7, 2015
    Assignee: Dow Corning Toray Co., Ltd.
    Inventors: Takayoshi Otomo, Keiji Yoshida, Yuji Saito
  • Patent number: 8969478
    Abstract: Provided is a curable composition and its use. The curable composition may exhibit excellent processibility and workability. The curable composition has excellent light extraction efficiency, crack resistance, hardness, thermal and shock resistance and an adhesive property after curing. The curable composition may provide a cured product exhibiting stable durability and reliability under severe conditions for a long time and having no whitening and surface stickiness.
    Type: Grant
    Filed: December 23, 2013
    Date of Patent: March 3, 2015
    Assignee: LG Chem, Ltd.
    Inventors: Min Jin Ko, Jae Ho Jung, Myung Sun Moon, Bum Gyu Choi, Dae Ho Kang, Min Kyoun Kim, Byung Kyu Cho
  • Publication number: 20150051345
    Abstract: Filled silicone composition, in situ preparation and use thereof are provided. The composition comprises a mixture of (A) an in situ-prepared treated silica, (B) an in situ-prepared (siloxane-alkylene)-endblocked polydiorganosiloxane, (c) a cure catalyst and (D) a crosslinker. Moreover, the composition can be used as adhesive, coating and sealant.
    Type: Application
    Filed: October 11, 2011
    Publication date: February 19, 2015
    Inventors: Lei Fang, Brian Harkness, Xiucuo Li, Lauren Tonge, James Tonge
  • Publication number: 20140360367
    Abstract: This invention relates to organopolysiloxane compounds. In some embodiments, the organopolysiloxane compound includes a siloxane unit having at least one trialkylsilyl pendant group attached thereto through an organic group spacer. The present invention also relates to methods of making the organopolysiloxane, a hydrosilylation-curable silicone composition including the organopolysiloxane, a cured product of the silicone composition, a membrane including the cured product, a method of making the membrane, and a method of separating components in a feed mixture using the membrane.
    Type: Application
    Filed: December 27, 2012
    Publication date: December 11, 2014
    Inventors: Dongchan Ahn, James S. Hrabal, Alexandra N. Lichtor
  • Patent number: 8895664
    Abstract: Provided is a curable composition and its use. The curable composition may exhibit excellent processability and workability. The curable composition has excellent light extraction efficiency, crack resistance, hardness, thermal and shock resistance and an adhesive property after curing. The curable composition may provide a cured product exhibiting stable durability and reliability under severe conditions in a long time, and not inducing whitening and surface stickiness.
    Type: Grant
    Filed: November 27, 2013
    Date of Patent: November 25, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Min Jin Ko, Myung Sun Moon, Jae Ho Jung, Bum Gyu Choi, Dae Ho Kang, Min Kyoun Kim, Byung Kyu Cho
  • Patent number: 8841404
    Abstract: Polycarbonate compositions having flame retardant properties and improved impact resistance are disclosed, together with methods for preparing the same.
    Type: Grant
    Filed: May 18, 2011
    Date of Patent: September 23, 2014
    Assignee: SABIC Global Technologies B.V.
    Inventors: Haseena Aripuram Parakkal, Sriram Krishnamurthy, Wim Steendam, Gautam Chatterjee
  • Publication number: 20140275329
    Abstract: A composition contains (A) a hydrosilylation reaction catalyst and (B) an aliphatically unsaturated compound having an average, per molecule, of one or more aliphatically unsaturated organic groups capable of undergoing hydrosilylation reaction. The composition capable of reacting via hydrosilylation reaction to form a reaction product, such as a silane, a gum, a gel, a rubber, or a resin. Ingredient (A) contains a metal-ligand complex that can be prepared by a method including reacting a metal precursor and a ligand.
    Type: Application
    Filed: September 20, 2012
    Publication date: September 18, 2014
    Inventors: Kurt Brandstadt, Simon Cook, Aswini Dash, Matthew Olsen, Avril Surgenor, Richard Taylor, Binh Nguyen, Ming-Shin Tzou
  • Patent number: 8835555
    Abstract: The present invention has an objective to easily obtain an emulsion exhibiting superior storage stability, and in particular, an emulsion of a polyorganosiloxane. The present invention provides a method for producing an emulsion characterized by obtaining an emulsion by emulsifying a mixture of an oil and a surfactant, obtained by synthesizing the surfactant in the oil. In particular, the method is suitably used for the preparation of an emulsion of an organopolysiloxane (A) which is usually difficult to be stably emulsified. A silicone-based surfactant (B), and in particular, a silicone-based surfactant having a small degree of polymerization of a siloxane chain such as a trisiloxane is synthesized in an oil. Thereby, an emulsion exhibiting superior storage stability can be produced.
    Type: Grant
    Filed: December 21, 2009
    Date of Patent: September 16, 2014
    Assignee: Dow Corning Toray Co. Ltd.
    Inventors: Kazuhiko Kojima, Tsutomu Naganawa, Asao Harashima
  • Patent number: 8772374
    Abstract: The invention relates to the preparation of a rubber composition containing a pre-treated precipitated silica and a tire having a component comprised of such rubber composition. The pre-treated silica is a precipitated silica having been pre-treated with a silica coupling agent comprised of an alkoxyorganomercaptosilane to form a precipitated silica/coupling agent composite prior to its blending with a rubber composition. The rubber composition preparation involves reacting said pretreated silica/coupling agent composite with a combination of bis(3-triethoxysilylpropyl) polysulfides in situ within the rubber composition.
    Type: Grant
    Filed: October 22, 2012
    Date of Patent: July 8, 2014
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Giorgio Agostini, Marc Weydert, Elena Sperotto
  • Publication number: 20140175494
    Abstract: A silicone resin composition includes a cage octasilsesquioxane; a polysiloxane containing alkenyl groups at both ends containing an alkenyl group having the number of moles smaller than the number of moles of the hydrosilyl group of the cage octasilsesquioxane; a hydrosilylation catalyst; a hydroxyl group-containing polysiloxane, organohydrogenpolysiloxane, or a polysiloxane containing alkenyl groups at side chain.
    Type: Application
    Filed: February 28, 2014
    Publication date: June 26, 2014
    Applicant: NITTO DENKO CORPORATION
    Inventors: Haruka FUJII, Hiroyuki KATAYAMA
  • Patent number: 8722153
    Abstract: A release coating composition includes a curable polysiloxane and an aerosol suppressant that has more than one SiO4/2 unit. The aerosol suppressant includes the polymerization product of a siloxane and a cyclic polysiloxane polymerized in the presence of a polymerization catalyst. The siloxane has units of the chemical formula (SiO4/2)(RaRb2SiO1/2)x wherein Ra is a vinyl moiety, Rb is an alkyl moiety, and x is a number from 1.05 to 4. The release coating composition is formed by combining the aerosol suppressant and a curable polysiloxane. The release coating composition is also used to coat a substrate in a release coating process producing a mist of less than 50 mg/cubic meter measured at approximately 457 m/min.
    Type: Grant
    Filed: May 23, 2008
    Date of Patent: May 13, 2014
    Assignee: Dow Corning Corporation
    Inventor: Robert Ekeland
  • Publication number: 20140088251
    Abstract: Provided is a curable composition and its use. The curable composition may exhibit excellent processability and workability. The curable composition has excellent light extraction efficiency, crack resistance, hardness, thermal and shock resistance and an adhesive property after curing. The curable composition may provide a cured product exhibiting stable durability and reliability under severe conditions in a long time, and not inducing whitening and surface stickiness.
    Type: Application
    Filed: November 27, 2013
    Publication date: March 27, 2014
    Applicant: LG CHEM, LTD.
    Inventors: Min Jin Ko, Myung Sun Moon, Jae Ho Jung, Bum Gyu Choi, Dae Ho Kang, Min Kyoun Kim, Byung Kyu Cho
  • Publication number: 20140024774
    Abstract: A condensation reaction curable composition comprises a new catalyst, Dow Corning® 4-6085, and a polyorganosiloxane polyoxyalkylene block copolymer having one or more polyorganosiloxane blocks and one or more polyoxyalkylene blocks linked to each other via divalent radicals which comprises at least two silicon-bonded alkoxy groups, preferably of the form PS-(A-PO)m-(A-PS)n, wherein PO is a polyoxyalkylene block, PS represents a polyorganosiloxane block, A is a divalent radical, subscripts m and n have independently a value of at least 1, comprising at least one alkoxy-substituted siloxane unit of the formula (R?)q(OR)—SiO3-q/2, wherein R represents an alkyl group having 1 to 4 carbon atoms and each R? represents an alkyl group having 1 to 6 carbon atoms, a phenyl group, or an alkoxy group of the formula —OR and subscript q has a value of 0, 1 or 2, provided at least two silicon-bonded groups OR are present in the block copolymer.
    Type: Application
    Filed: March 12, 2012
    Publication date: January 23, 2014
    Inventors: Simon Cook, Geraldine Durand, Thomas Easton, Sarah O'Hare, Avril Surgenor, Richard Taylor
  • Patent number: 8580889
    Abstract: An addition curable self-adhesive silicone rubber composition comprising (A) an organopolysiloxane containing at least two alkenyl groups, (B) an organohydrogenpolysiloxane containing at least three SiH groups, (C) another organohydrogenpolysiloxane containing no other reactive groups than SiH groups, and (F) an addition reaction catalyst, with a SiH/alkenyl molar ratio ranging from 0.8 to 5.0, is briefly moldable and cures to various metals and organic resins.
    Type: Grant
    Filed: February 29, 2012
    Date of Patent: November 12, 2013
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Nobu Kato, Noriyuki Meguriya
  • Patent number: 8530617
    Abstract: A process for producing silicon-containing particles having an extremely small particle diameter by a simple process without using surface-active agents or the like. The process is characterized by forming silicon-containing particles as a result of phase separation from an organic polymer, wherein the phase separation is achieved by an addition reaction, condensation reaction, ring-opening reaction, or a radical reaction of a curable silicon-containing compound or a curable composition that contains said compound, and the silicon-containing compound or the composition is maintained in a uniform liquid, fused, or dissolved phase with the organic polymer that is free of silicon and does not participate in the curing reaction of the silicon-containing compound or the composition.
    Type: Grant
    Filed: January 23, 2009
    Date of Patent: September 10, 2013
    Assignee: Dow Corning Toray Company, Ltd.
    Inventor: Yukinari Harimoto
  • Patent number: 8466210
    Abstract: The present invention relates to a curable dental composition comprising a surfactant and an F-containing compound. The dental composition can be used e.g. as impression material and/or for the production of crown and bridges.
    Type: Grant
    Filed: December 17, 2008
    Date of Patent: June 18, 2013
    Assignee: 3M Innovative Properties Company
    Inventors: Joachim W. Zech, Peter U. Osswald, Henning Hoffmann, Andreas R. Maurer, Peter Bissinger, Klaus Hintzer
  • Publication number: 20130011606
    Abstract: A liquid silicone rubber composition comprising an alkenyl group-containing liquid organopolysiloxane, a reinforcing silica filler, an organohydrogenpolysiloxane, a platinum group catalyst, a liquid organopolysiloxane that is free of crosslinking groups and is compatible with the alkenyl group-containing liquid organopolysiloxane, and a liquid organopolysiloxane that is free of crosslinking groups and is incompatible with the alkenyl group-containing liquid organopolysiloxane, wherein the cured material therefrom has a JIS type A durometer hardness of 15 to 26 and a tensile stress at 100% elongation of 0.25 to 0.60 MPa. Also, a through hole-containing sealing member comprising this cured material.
    Type: Application
    Filed: December 28, 2010
    Publication date: January 10, 2013
    Inventors: Takayoshi Otomo, Keiji Yoshida, Yuji Saito
  • Patent number: 8349928
    Abstract: A metal particle dispersion structure characteristically comprising (B) 0.005 to 100 weight parts of metal nanoparticles dispersed in (A) 100 weight parts of polymerized polymer, wherein the metal nanoparticles are metal particles obtained by mixing (b1) organohydrogenpolysiloxane and (b2) at least one metal compound which is soluble in component (b3) to uniformity in (b3) cyclic or chain dimethylpolysiloxane or at least one organic solvent.
    Type: Grant
    Filed: October 9, 2008
    Date of Patent: January 8, 2013
    Assignee: Dow Corning Toray Co., Ltd.
    Inventor: Yukinari Harimoto
  • Patent number: 8343632
    Abstract: The present invention relates to curable alkenyl based silicone release coating compositions having improved adhesion to paper and polymeric substrates. Furthermore the present invention relates to the process for making a silicone release coating with improved adhesion to paper and polymeric substrates.
    Type: Grant
    Filed: October 19, 2010
    Date of Patent: January 1, 2013
    Assignee: Momentive Performance Materials Inc.
    Inventors: Roy Melvin Griswold, Richard Paul Eckberg, Slawomir Rubinsztajn, Stanislaw Slomkowski, Anna Kowalewska, Stanislaw Sosnowski
  • Publication number: 20120232219
    Abstract: An addition curable self-adhesive silicone rubber composition comprising (A) an organopolysiloxane containing at least two alkenyl groups, (B) an organohydrogenpolysiloxane containing at least three SiH groups, (C) another organohydrogenpolysiloxane containing no other reactive groups than SiH groups, and (F) an addition reaction catalyst, with a SiH/alkenyl molar ratio ranging from 0.8 to 5.0, is briefly moldable and cures to various metals and organic resins.
    Type: Application
    Filed: February 29, 2012
    Publication date: September 13, 2012
    Applicant: Shin-Etsu Chemical Co., Ltd.
    Inventors: Nobu KATO, Noriyuki Meguriya
  • Patent number: 8067496
    Abstract: The invention relates to curable silicone compositions which contain silane based crosslinkers and a mixture of different organopolysiloxanes. The compositions are particularly suitable as curable impression materials in dental applications.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: November 29, 2011
    Assignee: 3M Innovative Properties Company
    Inventors: Joachim W. Zech, Franziska Strauss, Henning Hoffmann, Peter Bissinger, Wolf Steiger
  • Patent number: 8039570
    Abstract: A solvent-free silicone composition for release paper, comprising a mixture prepared by i) subjecting the organopolysiloxane (I) which is composed of R13SiO1/2 units, SiO4/2 units and (HO)SiO3/2 units, and has an OH group content of from 0.02 to 0.1 mol/100 g, to a partial condensation reaction in an organic solvent in the presence of an alkaline catalyst and the organopolysiloxane (II) represented by the following formula (2), and ii) removing the organic solvent, said mixture having an OH group content of less than 0.02 mol/100 g. The composition forms a tight-release layer stable with time.
    Type: Grant
    Filed: October 13, 2006
    Date of Patent: October 18, 2011
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventor: Shinji Irifune
  • Patent number: 7968645
    Abstract: The invention relates to curable silicone compositions which contain silane based crosslinkers and a mixture of different organopolysiloxanes. The compositions are particularly suitable as curable impression materials in dental applications.
    Type: Grant
    Filed: May 7, 2004
    Date of Patent: June 28, 2011
    Assignee: 3M Espe AG
    Inventors: Joachim W. Zech, Franziska Strauss, Henning Hoffmann, Peter Bissinger, Wolf Steiger
  • Patent number: 7838117
    Abstract: Provided is a silicone-sealed LED including: a LED chip, a cured silicone rubber layer which coats the LED chip, and a cured silicone resin layer which coats and seals the periphery of the cured silicone rubber layer. Also provided are a process for producing the silicone-sealed LED and a process for sealing a LED. In the silicone-sealed LED, a silicone rubber layer disposed between a silicone resin layer that represents the sealing body and a LED chip functions as a buffer layer, meaning cracks are not easily generated in the silicone resin layer that represents the sealing body, while full use is made of the excellent heat resistance, weather resistance, and color fastness of the silicone rubber and the silicone resin.
    Type: Grant
    Filed: January 19, 2006
    Date of Patent: November 23, 2010
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Kei Miyoshi, Eiichi Tabei
  • Patent number: 7781522
    Abstract: A curable silicone composition includes: (A) an organopolysiloxane represented by the siloxane unit formula (1) given below and having at least two univalent organic groups that contain epoxy groups and are free of aromatic rings: [R13SiO1/2]a[R22SiO2/2]b[R3SiO3/2]c (where R1, R2, and R3 are univalent organic groups, at least two of which are univalent organic groups which contain epoxy groups and are free of aromatic rings; more than 20 mole % of R3 are aryl groups; a+b+c equals 1; on average, “a” satisfies the following condition: 0?a?0.8; on average, “b” satisfies the following condition: 0.2?b?0.8; and, on average, “c” satisfies the following condition: 0.2<c<1.0); (B) a linear-chain organopolysiloxane having at least two univalent organic groups that contain phenolic hydroxyl groups; and (C) a curing accelerator.
    Type: Grant
    Filed: November 4, 2004
    Date of Patent: August 24, 2010
    Assignee: Dow Corning Toray Company, Ltd.
    Inventors: Yoshitsugu Morita, Minoru Isshiki, Hiroshi Ueki, Atsushi Togashi
  • Patent number: 7718748
    Abstract: A two-component addition-crosslinking silicone comprises (a) 0.1-70% by weight polyorganosiloxanes containing at least two unsaturated groups in the molecule; (b) 0.1-15% by weight polyorganohydrogensiloxanes containing at least two SiH groups in the molecule; (c) 0.01-2.0% by weight noble metal catalyst; and (d) 0.1-5% by weight of a non-toxic antimicrobial additive or a combination of at least two non-toxic antimicrobial additives.
    Type: Grant
    Filed: October 16, 2006
    Date of Patent: May 18, 2010
    Assignee: Dreve-Otoplastik GmbH
    Inventors: Thomas Veit, Martin Klare, Michael Kutschinski, Reiner Altmann
  • Patent number: 7699337
    Abstract: Provided is a liquid silicone rubber coating agent composition, including: (A) an organopolysiloxane containing at least one alkenyl group bonded to a silicon atom within each molecule, (B) a straight-chain organohydrogenpolysiloxane containing a single silicon atom-bonded hydrogen atom only at each molecular chain terminal, with a viscosity at 25° C. within a range from 0.001 to 1.0 Pa·s, (C) an organohydrogenpolysiloxane containing at least three silicon atom-bonded hydrogen atoms within each molecule, with a viscosity at 25° C. within a range from 0.001 to 10 Pa·s, (D) an addition reaction catalyst, (E) a finely powdered silica with a BET specific surface area of at least 50 m2/g, and (F) an adhesion imparting agent. Also provided is a curtain air bag with a rubber coating layer formed by curing this composition.
    Type: Grant
    Filed: February 3, 2006
    Date of Patent: April 20, 2010
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Masayuki Ikeno, Hidenori Mizushima
  • Patent number: 7687563
    Abstract: A silicone rubber emulsion composition comprising (A) 100 parts diorganopolysiloxane having at least two silicon-bonded alkenyl groups, (E) 0 to 60 parts reinforcing silica filler, (B) 10 to 250 parts water containing a smectite clay, (C) 0.1 to 15 parts emulsifier, and (D) a cross-linking agent (e.g., an organohydrogenpolysiloxane) in an amount sufficient for cross-linking component (A) and a catalyst (e.g., a platinum-type catalyst). A method for preparing the aforementioned emulsion composition comprising mixing components (A) and (E) with other components in a high-speed stirrer-equipped mixer. A method of manufacturing a silicone rubber comprising either heating and dehydrating the aforementioned emulsion composition.
    Type: Grant
    Filed: May 21, 2004
    Date of Patent: March 30, 2010
    Assignee: Dow Corning Toray Company, Ltd.
    Inventors: Shinya Shirasaki, Tadanori Fukamachi, Mitsuo Hamada
  • Patent number: 7683125
    Abstract: A method of manufacturing a silicone rubber comprises a first stage and a second stage. The first stage comprises (1-1) the step of preparing an aqueous dispersion composed of water that contains a water-soluble polymer (E), a finely powdered silica filler (B), a conductive filler (C), and a non-conductive inorganic filler (D) and (1-2) the step of preparing an aqueous emulsion by stirring and mixing the obtained aqueous dispersion with the following components: an organopolysiloxane (A) that contains silicon-bonded alkenyl groups, an emulsification agent (F), and a curing agent (G). The second stage obtains the silicon rubber either (2-1) by curing the aqueous emulsion prepared in the aforementioned first stage, forming a wet silicone-rubber like cured body, and then removing water from the aforementioned wet silicone-rubber like cured body; or (2-2) by dehydrating and curing the aqueous emulsion prepared in the aforementioned first stage.
    Type: Grant
    Filed: February 24, 2004
    Date of Patent: March 23, 2010
    Assignee: Dow Corning Toray Company, Ltd.
    Inventors: Shinya Shirasaki, Tadanori Fukamachi, Mitsuo Hamada
  • Patent number: 7537712
    Abstract: An electrically conductive silicone rubber composition comprises, at least, (A) 100 parts by weight of an organopolysiloxane having at least two alkenyl groups per molecule, (B) an organopolysiloxane having at least two silicon-bonded hydrogen atoms per molecule (an amount sufficient to cure the present composition), (C) a platinum based catalyst (an amount sufficient to promote the cure of the present composition), (D) 50 parts by weight to 5,000 parts by weight of a metal based electrically conductive filler, and (E) 5 parts by weight to 500 parts by weight of spherical silicone rubber particles with a surface active agent content of not more than 0.3 wt %.
    Type: Grant
    Filed: March 3, 2003
    Date of Patent: May 26, 2009
    Assignee: Dow Corning Toray Silicone Co., Ltd.
    Inventors: Ryoto Shima, Kazumi Nakayoshi, Hiroki Ishikawa
  • Patent number: 7488773
    Abstract: Silicone rubber materials comprising finely divided phase change materials such as crystalline alkyl hydrocarbons or salt hydrates facilitate thermo-regulation due to latent heat absorption and latent heat release in the phase transition range of the phase change material, which improves the thermal performance and enhances the comfort sensation when using the silicon rubber material in item such as car seats, bicycle saddles, diving suits, building materials or medical devices.
    Type: Grant
    Filed: January 21, 2003
    Date of Patent: February 10, 2009
    Inventor: Barbara Hildegard Pause
  • Patent number: 7482403
    Abstract: A sealing material comprising (A) an organopoly-siloxane containing at least two alkenyl groups in a molecule, (B) a resinous copolymer composed mainly of R3SiO1/2 and SiO2 units in a molar ratio of 0.5-1.5:1, wherein R is a monovalent hydrocarbon group, and containing 5×10?3 to 1×10?4 mol/g of vinyl groups, (C) an organohydrogenpolysiloxane containing at least two Si—H groups in a molecule, (D) fumed silica having a specific surface area of 150-400 m2/g, and (E) an addition reaction catalyst is suited for sealing one side edge of a polymer electrolyte fuel-cell separator since it has excellent acid resistance and improved compression set in acidic solutions, and exerts satisfactory seal effects.
    Type: Grant
    Filed: November 12, 2003
    Date of Patent: January 27, 2009
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Noriyuki Meguriya, Yujiro Taira
  • Patent number: 7351763
    Abstract: A tire is provided having a circumferential tread of a diene-based rubber composition reinforced with a silica-containing carbon black which contains domains of silica on its surface prepared by extended reactive mixing of said silica-containing carbon black with a coupling agent together with at least one elastomer. Said silica-containing carbon black is a carbon black which contains silica domains on its surface and said silica contains hydroxyl groups (e.g. silanol groups) on its surface, wherein said silica domains cover at least 50 percent of the carbon black surface. Said coupling agent is a bis(3-triethoxysilylpropyl) polysulfide having an average of from 2 to 4, alternately a more limited average of from 2 to 3 or from 2 to 2.6, connecting sulfur atoms in its polysulfidic bridge. In one aspect of the invention, it is preferred that said coupling agent is exclusive of a bis(3-trialkoxysilylalkyl) polysulfide having an average of greater than 3.5 sulfur atoms in its polysulfidic bridge.
    Type: Grant
    Filed: July 11, 2003
    Date of Patent: April 1, 2008
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Tom Dominique Linster, Giorgio Agostini
  • Patent number: 7307121
    Abstract: This invention discloses a method for preparing rubber compositions that exhibit unique combinations of properties that are desirable for tire tread applications for enhanced snow/ice and wet traction, low rolling resistance and increased treadwear performance in comparison with conventional silica compounds. Specifically, a high reactively silane coupling agent, such as a mercaptosilane, is used in combination with a silane coupling typically used for silica tread compounds such as bis(triethoxylsilylpropyl)disulfide to treat silica pellets in a hydrocarbon solvent at elevated temperatures. The treated silica is then blended with solution elastomer cement in a hydrocarbon solvent. The deposited reactive silanes partially react with the elastomer molecules forming a layer of polymer grafted on the silica surfaced. This structure significantly improves the silica retention during the steam stripping operation. Almost 100% (99+%) silica retention has been achieved by this invention.
    Type: Grant
    Filed: March 19, 2004
    Date of Patent: December 11, 2007
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Ping Zhang, Sun-Lin Chen
  • Patent number: 7307122
    Abstract: A silicone rubber coating composition which cures into a silicone rubber having a tear strength of 25-50 kN/m and a peeling bond strength of 30-60 N/cm is suited for coating of hollow weave type air bags. A hollow weave type air bag coated with the coating composition can be instantaneously inflated while the bag prevents the silicone rubber film from being peeled from the base fabric, eliminates inflating gas leakage, and retains an acceptable inflation time.
    Type: Grant
    Filed: June 27, 2005
    Date of Patent: December 11, 2007
    Assignee: Shin-Estu Chemical Co., Ltd.
    Inventors: Masayuki Ikeno, Atsushi Yaginuma, Syuichi Azechi, Takeshi Miyao
  • Patent number: 7276556
    Abstract: An aqueous suspension of cross-linked silicone particles comprising (A) cross-linked silicone particles having an average diameter of 0.1 to 500 ?m, (B) polyoxyethylene sorbitan monolaurate, and (C) water. And, in a second embodiment, an aqueous emulsion of cross-linked silicone particles comprising (A) cross-linked silicone particles having an average diameter of 0.1 to 500 ?m, (B) polyoxyethylene sorbitan monolaurate, (C) water, and (D) oil.
    Type: Grant
    Filed: May 20, 2002
    Date of Patent: October 2, 2007
    Assignee: Dow Corning Toray Silicone Co., Ltd.
    Inventors: Yoshitsugu Morita, Kazuo Kobayashi
  • Patent number: 7241835
    Abstract: Methods for making homogenized cosmetic formulations comprising a silicone gel.
    Type: Grant
    Filed: May 16, 2003
    Date of Patent: July 10, 2007
    Assignee: General Electric Company
    Inventors: Michael Joseph O'Brien, Suresh K. Rajaraman
  • Patent number: 7163975
    Abstract: The invention relates to a tire having at least one component (e.g. tread) of a rubber composition comprised of a composite of styrene/butadiene elastomer and functionalized styrene/butadiene elastomer containing an internal silanol and/or siloxy group therein with pendent silanol and/or alkoxy groups of a polymodal (e.g. bimodal) molecular weight distribution and a dispersion therein of silica aggregates of which a portion thereof contain a plurality of hydroxyl groups on their surface in a form of geminal hydroxyl groups. In one aspect, said silica aggregates may be pre-treated to reduce said hydroxyl groups on their surface prior to blending with said silanol and/or siloxy functionalized elastomer.
    Type: Grant
    Filed: July 28, 2003
    Date of Patent: January 16, 2007
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: David John Zanzig, Georges Marcel Victor Thielen, John Joseph Andre Verthe
  • Patent number: 7132170
    Abstract: An adhesive coating composition for fabric substrates, such as automotive airbags. The coating is formed from a blend including a silicone polymer and a second polymer which is thermodynamically compatible with silicone. In particular, the second polymer has a cohesion parameter (?/MPa1/2) that is similar to that of silicone so that any thermodynamic barrier to the second polymer dissolving in silicone is removed.
    Type: Grant
    Filed: July 29, 2003
    Date of Patent: November 7, 2006
    Assignee: Milliken & Company
    Inventor: Richard Henry Parker
  • Patent number: 7090923
    Abstract: The present invention relates to curable alkenyl based silicone release coating compositions having improved adhesion to paper and polymeric substrates. Furthermore the present invention relates to the process for making a silicone release coating with improved adhesion to paper and polymeric substrates.
    Type: Grant
    Filed: February 12, 2003
    Date of Patent: August 15, 2006
    Assignee: General Electric Corporation
    Inventors: Roy Melvin Griswold, Richard Paul Eckberg, Slawomir Rubinsztajn, Stanislaw Slomkowski, Anna Kowalewska, Stanislaw Sosnowski
  • Patent number: 7074853
    Abstract: Disclosed is a compound of one of the formulae wherein R1, R2, R3, R4, R5, R6, R7, R8, R9, and R10 each, independently of the others, is an alkyl group, an aryl group, an arylalkyl group, or an alkylaryl group, R11 and R12 each, independently of the others, is an alkylene group, an arylene group, an arylalkylene group, or an alkylarylene group, G is a cationic moiety, A is an anionic moiety, n is an integer representing the number of repeat —OSi(R7)(R8)— monomer units, a is an integer representing the number of repeat —OSi(R10)(R12-lightfastness moiety)- monomer units, and c is an integer representing the number of repeat —OSi(R9)(R11-hydrophilic moiety)- monomer units.
    Type: Grant
    Filed: August 6, 2004
    Date of Patent: July 11, 2006
    Assignee: Xerox Corporation
    Inventors: Thomas W. Smith, Kathleen M. McGrane
  • Patent number: 7059627
    Abstract: A silicone rubber coating composition which cures into a silicone rubber having a tear strength of 25–50 kN/m and a peeling bond strength of 30–60 N/cm is suited for coating of hollow weave type air bags. A hollow weave type air bag coated with the coating composition can be instantaneously inflated while the bag prevents the silicone rubber film from being peeled from the base fabric, eliminates inflating gas leakage, and retains an acceptable inflation time.
    Type: Grant
    Filed: May 7, 2003
    Date of Patent: June 13, 2006
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Masayuki Ikeno, Atsushi Yaginuma, Syuichi Azechi, Takeshi Miyao
  • Patent number: 7026397
    Abstract: The present invention is constituted of a curable composition which comprises, as essential components, the following four components: (A) a vinyl polymer having at least one hydrosilylatable alkenyl group within the molecule, (B) a hydrosilyl group-containing compound, (C) a hydrosilylation catalyst, and (D) an aliphatic unsaturated bond-containing compound, and which may further comprise (E) an amine compound, or the following three components: (A) a vinyl polymer having at least one hydrosilylatable alkenyl group within the molecule, (B) a hydrosilyl group-containing compound, and (G) an organic compound having at least one hydrosilylatable alkenyl or alkynyl group within the molecule [other than the above-mentioned component (A)], or the following three components: (A) a vinyl polymer having at least one hydrosilylatable alkenyl group within the molecule, (B) a hydrosilyl group-containing compound, and (H) carbon black.
    Type: Grant
    Filed: February 8, 2001
    Date of Patent: April 11, 2006
    Assignee: Kaneka Corporation
    Inventors: Nobuhiro Hasegawa, Yoshiki Nakagawa
  • Patent number: 7026387
    Abstract: The present invention relates to a vulcanizable rubber composition which can be used for the manufacture of tires, a process for the preparation of this composition and a tire, the tread of which comprises such a composition, the latter having improved hysteresis and physical properties in the vulcanized state, while retaining satisfactory processing properties. A rubber composition according to the invention comprises a reinforcing white filler, and is such that it comprises at least one diene block polymer which is intended to interact with said reinforcing white filler and which comprises on at least one of its chain ends a polysiloxane block which ends in a trialkylsilyl group, said polysiloxane block corresponding to the formula: [—SiR1R2O—]x-SiR3R4R5, in which R1, R2, R3, R4 and R5 represent alkyl groups having from 1 to 20 carbon atoms, and in which x is a natural integer other than zero.
    Type: Grant
    Filed: November 12, 2003
    Date of Patent: April 11, 2006
    Assignee: Michelin Recherche et Technique S.A.
    Inventors: Pierre Robert, Jean-Luc Cabioch, Jean-Michel Favrot