Patents Assigned to Dow Corning Toray Silicone Co., Ltd.
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Patent number: 6562469Abstract: A solventless silicone composition for forming a cured release coating comprising (A) 100 parts by weight of a mixture comprising 99 to 90 parts by weight of (A-1) a linear diorganopolysiloxane having a viscosity of 5 to 1,000 mPa·s at 25° C., having both terminal ends of the molecular chain blocked by dimethylalkenylsiloxy groups, with an alkenyl group content of 0.2 to 10 mol % of all organic groups and 1 to 10 parts by weight of (A-2) a linear diorganopolysiloxane having a viscosity of 1,000 to 10,000 mPa·s at 25° C. having both terminal ends of the molecular chain blocked by trimethylsiloxy groups and having at least two pendant alkenyl groups bonded to silicon atoms, with an alkenyl group content of 0.05 to 0.5 mol % of all organic groups, (B) 3 to 50 parts by weight of an organohydrogenpolysiloxane having a viscosity of 1 to 1,000 mPa·s at 25° C. having at least three silicon-bonded hydrogen atoms per molecule, and (C) a catalytic amount of a platinum catalyst.Type: GrantFiled: December 18, 2001Date of Patent: May 13, 2003Assignee: Dow Corning Toray Silicone Co., Ltd.Inventors: Taku Koyama, Nobuo Kaiya
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Patent number: 6534590Abstract: The present invention provides a highly storage-stable silicone-grafted vinyl copolymer emulsion composition that can produce films and coatings that are highly water repellent, water resistant, adhesive, and printable, the composition including (A) vinyl monomer, (B) carbosiloxane dendrimer that contains a radically polymerizable organic group, (C) surfactant, and (D) radical polymerization initiator.Type: GrantFiled: October 27, 2000Date of Patent: March 18, 2003Assignee: Dow Corning Toray Silicone Co., Ltd.Inventors: Takayuki Aso, Haruhiko Furukawa, Yoshitsugu Morita
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Patent number: 6534576Abstract: A flame retardant organic resin composition comprising (A) 100 parts by weight of an aromatic ring-containing organic resin and (B) 0.01-50 parts by weight of a branched organopolysiloxane described by average molecular formula (R13SiO1/2)a(R2SiO3/2)b(SiO4/2)c(R3O1/2)d(HO1/2)e, where each R1 is independently selected from alkyl groups comprising 1 to 12 carbon atoms and alkenyl groups comprising 2 to 12 carbon atoms; each R2 is independently selected from alkyl groups comprising 1 to 12 carbon atoms, alkenyl groups comprising 2 to 12 carbon atoms, and aryl groups comprising 6 to 12 carbon atoms, where the aryl groups of R2 are at least 30 mol % based on total monovalent hydrocarbon in R1 and R2, R3 represents an alkyl group, subscripts a and b are positive numbers, and subscripts c, d, and e are 0 or positive numbers.Type: GrantFiled: July 17, 2001Date of Patent: March 18, 2003Assignee: Dow Corning Toray Silicone Co., Ltd.Inventors: Koji Nakanishi, Hidekatsu Hatanaka, Haruhiko Furukawa, Koji Shiromoto, Hiroshi Ueki, Yoshitsugu Morita
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Patent number: 6528121Abstract: An aqueous treatment agent for wiping paper is capable of rendering tissue paper, toilet paper, and other types of wiping paper dry to the touch, highly smooth, nonsticky, and extremely soft while suppressing the slippery or wet feel thereof. The aqueous treatment agent comprises a water dispersion of a silicone rubber powder with an average particle diameter of 0.1 to 500 micrometers, a silicone oil, a surfactant, and water.Type: GrantFiled: April 6, 2001Date of Patent: March 4, 2003Assignee: Dow Corning Toray Silicone Co., Ltd.Inventors: Isao Ona, Masaru Ozaki, Kazuo Kobayashi, Yoshitsugu Morita
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Patent number: 6515041Abstract: A high energy radiation-curable composition comprising a partial hydrolysis-condensation product of (A) a mixture of an alkoxy containing organopolysiloxane and alkoxysilanes and (B) a multifunctional acrylate, and a resin molding coated with the composition. The composition forms coatings of superior curability, water repellency, water resistance, oil repellency, transparency, flexibility, and scratch resistance, especially on resin moldings.Type: GrantFiled: June 26, 2001Date of Patent: February 4, 2003Assignee: Dow Corning Toray Silicone Co., Ltd.Inventors: Masayuki Hayashi, Hideki Kobayashi
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Patent number: 6513680Abstract: A paste dispensing container comprising a cylindrical container having positioned therein a piston slidable along the walls of the container, a first end closed with a cap to seal paste within the container, a connecting portion at a second end of the container for connection with a pressurized fluid supply, and a leakage preventing cover having an air orifice covering the second end of the container. The paste dispensing container can be vacuum packaged in a gas-impermeable film for shipping and storage to prevent exposure of the paste contained therein to air.Type: GrantFiled: April 25, 2001Date of Patent: February 4, 2003Assignee: Dow Corning Toray Silicone Co., LTD.Inventors: Kazumi Nakayoshi, Hiroki Ishikawa, Ryoto Shima, Junji Nakanishi, Tomoko Kato, Minoru Isshiki, Kimio Yamakawa
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Patent number: 6509062Abstract: An elastomer delustering method comprising impregnating the surface of an elastomer with an organic compound having air-oxidizable curable unsaturated groups.Type: GrantFiled: April 3, 2001Date of Patent: January 21, 2003Assignee: Dow Corning Toray Silicone Co., Ltd.Inventors: Toshiki Nakata, Masayuki Onishi
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Patent number: 6498211Abstract: A vibration damping silicone composition of superior long term storage stability and vibration damping properties contains (A) a silicone oil, (B) a heavy calcium carbonate powder, (C) a light calcium carbonate powder, and (D) a fatty acid or a fatty acid derivative.Type: GrantFiled: July 26, 2001Date of Patent: December 24, 2002Assignee: Dow Corning Toray Silicone Co., Ltd.Inventors: Hideki Kobayashi, Masayuki Hayashi
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Patent number: 6498400Abstract: A semiconductor device comprising a semiconductor element; a substrate; and a hot-melt adhesive sheet bonding the semiconductor element to the substrate, wherein the hot-melt adhesive sheet comprises a spacer having the form of a sheet and a hot melt adhesive on both sides of the spacer. A semiconductor device comprising a semiconductor element; a substrate; and a hot-melt adhesive sheet bonding the semiconductor element to the substrate, wherein the hot-melt adhesive sheet comprises a mixture of a hot melt adhesive and a spacer, wherein the adhesive is selected from a silicone-modified epoxy resin adhesive, a silicone adhesive, and a silicone-modified polyimide adhesive, and the spacer has the form of particles.Type: GrantFiled: March 21, 2001Date of Patent: December 24, 2002Assignee: Dow Corning Toray Silicone Co., LTDInventors: Kimio Yamakawa, Minoru Isshiki, Yoshiko Otani, Katsutoshi Mine
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Patent number: 6497894Abstract: An aqueous dispersion of cured silicone rubber particles includes as Components, (A) cured silicone rubber particles with an average particle size of 0.1-500 &mgr;m; (B) a surface active agent; (C) a thickening agent; (D) an antiseptic agent (i) consisting of phenoxyethanol, chlorphenesin, methylparaben, and benzoic acid, or an antiseptic agent (ii) consisting of phenoxyethanol, chlorphenesin, and sorbic acid; and (E) water. It has superior antiseptic properties and superior anti-mildew properties without impairing the overall stability of the aqueous dispersion.Type: GrantFiled: August 6, 2001Date of Patent: December 24, 2002Assignees: Dow Corning Corporation, Dow Corning Toray Silicone Co., Ltd.Inventors: Tammy Lea Bratcher, Kazuo Kobayashi, Donald Taylor Liles, Yoshitsugu Morita
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Patent number: 6476123Abstract: Certain crosslinked organic particles exhibit a very good affinity for organic oils such as mineral oils and synthetic oils. They also exhibit a suitable affinity for silicone oils. Highly efficient methods for preparing crosslinked organic particles are provided. The crosslinked organic particles in the form of a suspension containing the particles have excellent handling properties, and are highly blendable with other components. Highly efficient methods for preparing such suspensions are also provided.Type: GrantFiled: July 26, 2000Date of Patent: November 5, 2002Assignee: Dow Corning Toray Silicone Co., Ltd.Inventors: Yoshitsugu Morita, Kazuo Kobayashi, Ryuji Tachibana
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Patent number: 6461597Abstract: A cosmetic consists of a cosmetic raw material in the form of an emulsion of silicone or organic oil containing crosslinked particles mixed with other cosmetic raw materials. Its touch on fingers and skin is good, spreading and feel during use are good, and it can also prevent unruly hair, stray hair, and tangling of hair, so hair can easily be arranged. It imparts a fresh, dry feeling without any stickiness. The cosmetic raw material consists of the silicone or organic oil emulsion containing crosslinked particles with a mean particle diameter of 0.05 to 100 &mgr;m. Crosslinking is obtained by an hydrosilylation of liquid crosslinkable compositions consisting of (A) organic compounds with at least two aliphatic unsaturated bonds per molecule, (B) silicon containing organic compounds with at least two hydrogen atoms bonded to silicon atoms in each molecule, and (C) hydrosilylation reaction catalysts.Type: GrantFiled: November 7, 2000Date of Patent: October 8, 2002Assignee: Dow Corning Toray Silicone Co., LTD.Inventors: Yoshitsugu Morita, Kazuo Kobayashi, Ozaki Masaru
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Patent number: 6458420Abstract: A water repellent for application to glass, comprising disilazane with the general formula in which n and n′ are the same or different integers having values from 2 to 20, and water-repellent glass whose surface has been treated with said water repellent.Type: GrantFiled: August 25, 1997Date of Patent: October 1, 2002Assignee: Dow Corning Toray Silicone Co., Ltd.Inventors: Shoji Akamatsu, Toshiyuki Okada
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Patent number: 6455640Abstract: A method for producing a basic amino acid-modified organopolysiloxane comprising reacting (A) a basic amino acid with (B) an organopolysiloxane having carboxylic anhydride groups bonded to silicon atoms.Type: GrantFiled: March 20, 2001Date of Patent: September 24, 2002Assignee: Dow Corning Toray Silicone, Co., Ltd.Inventor: Tadashi Okawa
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Patent number: 6448427Abstract: A method of preparing an organosilicon compound containing an acryloxy-functional group or a methacryloxy-functional group represented by general formula CH2═CR1—COO—R2—Si(OR3)nR43−n, where R1, R2, R3, R4 are as described below, comprising reacting (a) an alkali-metal salt of acrylic acid or an alkali-metal salt of methacrylic acid described by general formula CH2═CR1COOM1, where R1 is a methyl group or a hydrogen atom and M1 is an alkali metal and (b) an organosilicon containing a halogen-substituted organic group described by general formula XR2Si(OR3)nR43−n, where X is a halogen atom, R2 is an alkylenoxyalkylene group or an alkylene group comprising 1 to 6 carbon atoms, R3 is an alkyl group comprising 1 to 6 carbon atoms or an alkoxyalkyl group comprising 2 to 4 carbon atoms, R4 is a monovalent hydrocarbon group, and n is an integer of 1 to 3; in the presence of (c) a tertiary amine having a cyclic structure selected from the group consisting of 1,8-diazabicyclo&lsqbType: GrantFiled: November 28, 2001Date of Patent: September 10, 2002Assignee: Dow Corning Toray Silicone Co., Ltd.Inventors: Keiji Wakita, Akihiko Shirahata
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Patent number: 6448360Abstract: A process for the production of a cyclic siloxane described by formula (R1(CH3)SiO)d comprising reacting in the presence of an alkali catalyst a siloxane mixture comprising a silane or a linear siloxane described by general formula HO(R1(CH3)SiO)bH and a cyclic siloxane described by general formula (R1(CH3)SiO)c, where R1 is an alkenyl group having 6 to 14 carbon atoms, b is an integer of one or greater, c is an integer of 3 or greater, and d is an integer of 3 or greater.Type: GrantFiled: January 19, 2001Date of Patent: September 10, 2002Assignee: Dow Corning Toray Silicone Co., Ltd.Inventors: Tadashi Okawa, Junichi Maeshima, Norikatsu Higuchi, Takao Takemasa
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Patent number: 6447846Abstract: An electrically insulating thin-film-forming resin composition comprising (A) a hydrogen silsesquioxane resin, (B) a solvent-soluble polymer, and (C) a solvent; and a method for forming an electrically insulating thin film therefrom.Type: GrantFiled: January 18, 2001Date of Patent: September 10, 2002Assignee: Dow Corning Toray Silicone Co., Ltd.Inventors: Takashi Nakamura, Kiyotaka Sawa, Akihiko Kobayashi, Katsutoshi Mine
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Patent number: 6448175Abstract: To provide a method for forming insulating thin films that can induce condensation of silanol and dehydration to a high degree at or near ambient pressure. An interlevel dielectric layer is formed on a semiconductor substrate by coating hydrogen silsesquioxane resin onto the substrate and curing the hydrogen silsesquioxane resin to produce an interlevel dielectric layer. This interlevel dielectric layer is then heated at a pressure from 1 to 1,000 torr at a temperature from 150 to 550° C.Type: GrantFiled: September 7, 2000Date of Patent: September 10, 2002Assignee: Dow Corning Toray Silicone Co., Ltd.Inventors: Akihiko Kobayashi, Katsutoshi Mine, Takashi Nakamura, Motoshi Sasaki, Kiyotaka Sawa
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Patent number: 6441105Abstract: A synthetic fiber treatment agent composition capable of providing synthetic fibers, particularly synthetic fiber padding, with a better hand, smoothness, repulsion, and the like. The composition comprises an amino group-containing polyorganosiloxane with a high amino group content and specific terminal groups, and an amino group-containing polydiorganosiloxane with a low amino group content or a polydiorganosiloxane with no amino groups.Type: GrantFiled: April 16, 2001Date of Patent: August 27, 2002Assignee: Dow Corning Toray Silicone Co., Ltd.Inventors: Tsutomu Naganawa, Masaru Ozaki, Isao Ona, Tadashi Takimoto
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Patent number: 6437042Abstract: A suspension containing crosslinked silicone particles with a lower mean particle diameter and a better dispersion in certain organic resins is prepared by emulsifying a condensation crosslinkable silicone composition containing (A) an organopolysiloxane having at least two silanol groups per molecule and (B) a crosslinker, but no (C) condensation catalyst, in water using a surfactant. A tin (II) salt of an organic acid with no more than ten carbon atoms is then emulsified in water with a surfactant, and added as the component (C) to the emulsion of condensation crosslinkable silicone composition. This crosslinks the emulsion of condensation crosslinkable silicone composition.Type: GrantFiled: January 3, 2001Date of Patent: August 20, 2002Assignee: Dow Corning Toray Silicone Co., Ltd.Inventors: Kazuo Kobayashi, Yoshitsugu Morita, Ken Tanaka