Patents Assigned to Sunstar Giken Kabushiki Kaisha
  • Patent number: 4906516
    Abstract: A leather-like foam sheet for vacuum forming, which comprises:(1) a transparent of semitransparent colored polyurethane elastomer film layer,(2) a colored polyurethane elastomer film layer,(3) a polyurethane adhesive layer,(4) a thermoplastic resin foam layer (optional),(5) a thermoplastic resin sheet layer, and(6) a thermoplastic resin foam layer.The foam sheet of the present invention has excellent resistance and forming properties and a high-grade leather-like appearance and a soft feeling to the touch similar to those of natural leather and is useful for a trim material of a car and for furniture and other miscellaneous goods having leather-like appearance, touch, and other properties.
    Type: Grant
    Filed: March 23, 1989
    Date of Patent: March 6, 1990
    Assignee: Sunstar Giken Kabushiki Kaisha
    Inventors: Chikaaki Okamura, Tamotu Nagao
  • Patent number: 4898919
    Abstract: A polyurethane adhesive comprising(a) a specific block polyurethane polyol produced by reacting a hydrogenated polybutadiene glycol, a polyol having two or more hydroxy groups, and a polyisocyanate,(b) a thermoplastic polyester urethane rubber, and(c) a polyisocyanate compound as a crosslinking agent,said polyurethane adhesive being useful for adhesion of low polar materials, particularly adhesion between polypropylene materials and sheets of polyvinyl chloride.
    Type: Grant
    Filed: July 22, 1988
    Date of Patent: February 6, 1990
    Assignee: Sunstar Giken Kabushiki Kaisha
    Inventors: Ryuichi Ueda, Masahito Mori, Kohske Torii
  • Patent number: 4865904
    Abstract: A laminated cloth which comprises (A) a cloth and (B) a crosslinking polyvinyl chloride skin layer, and optionally (C) a polyvinyl chloride layer as a primary coat for the layer (B), said laminated cloth having improved deep drawing properties and excellent tolerant to vacuum forming and being useful as a covering for interior trims of automobiles and other vacuum forming products and also as a surface decorating material for various products.
    Type: Grant
    Filed: September 9, 1987
    Date of Patent: September 12, 1989
    Assignee: Sunstar Giken Kabushiki Kaisha
    Inventors: Chikaaki Okamura, Akihito Fujita, Tamotu Nagao, Fumihiko Yoshida
  • Patent number: 4851481
    Abstract: An improved epoxy resin composition having improved crack resistance and toughness with maintaining the excellent mechanical and electrical properties, which comprises an epoxy resin dispersed with silicone resin particles which are a crosslinking reaction product of one or more organopolysiloxanes having silanol groups at both ends and one or more organosilane compounds having at least two alkoxysilyl groups within one molecule thereof. The epoxy resin compositions of this invention are useful as sealing materials for IC, and also as coating materials, paints, adhesives, and prepregs.
    Type: Grant
    Filed: December 6, 1988
    Date of Patent: July 25, 1989
    Assignee: Sunstar Giken Kabushiki Kaisha
    Inventors: Akira Kuriyama, Tatsuya Okuno
  • Patent number: 4849183
    Abstract: A continuous photochemical reactor comprises a rotatable cylindrical reaction vessel provided at its one end with an inlet for reaction mixture and at the other end with an opening, a lid body for closing said opening of the reaction vessel and for discharging reaction products, a lamp mounted on the lid body and coaxially arranged in the reaction vessel, and a driving means for rotating the reaction vessel around its axis. The reaction vessel is provided at its inner wall with a spiral conveyer blade so that the inner edge of the blade is arranged close to the outer wall of the lamp. A reaction mixture is fed to the reactor through the driving shaft and irradiated by light such as ultraviolet light from the lamp while being conveyed by the spiral conveyer blade.
    Type: Grant
    Filed: August 28, 1987
    Date of Patent: July 18, 1989
    Assignee: Sunstar Giken Kabushiki Kaisha
    Inventor: Akira Kuriyama
  • Patent number: 4818804
    Abstract: A novel polycondensable macaronmonomer of the formula: ##STR1## wherein R is OH or COOH, R.sup.1, R.sup.2 and R.sup.3 are the same or different and are each a single bond or an alkylene having 1 to 4 carbon atoms, R.sup.4 is hydrogen atom or an alkyl having 1 to 4 carbon atoms, R.sup.5 is hydrogen atom or methyl, X is an alkyloxycarbonyl having 2 to 15 carbon atoms, a sustituted alkyloxycarbonyl having 2 to 15 carbon atoms in the alkyloxycarbonyl moiety, a cycloalkyloxycarbonyl having 3 to 7 carbon atoms in the cycloalkyl moiety, or phenyl, and n is an integer of from 1 to 1.times.10.sup.4, which is useful as an intermediate for the prodcution of a polymer having comb-shape structure useful as an adhesive, adhesion improver, caompatibilizing agent, surfactant, etc.
    Type: Grant
    Filed: August 28, 1987
    Date of Patent: April 4, 1989
    Assignee: Sunstar Giken Kabushiki Kaisha
    Inventors: Akira Kuriyama, Mikiko Yamaguchi
  • Patent number: 4804710
    Abstract: A two part epoxy composition which comprises(1) a specific modified epoxy resin component comprising(a) an epoxy resin,(b) an epoxy resin modified with a butadiene-acrylonitrile copolymer rubber, and(c) a urethane-modified epoxy resin obtained by reacting an isocyanate-terminated urethane prepolymer obtained from a polytetramethylene ether glycol and a diisocyanate with an epoxy resin containing at least one hydroxy group in the molecule, and(2) a curing agent comprising a polyamide-amine, said epoxy resin composition having excellent knife-cutting property and being useful as an adhesive or a coating agent.
    Type: Grant
    Filed: December 30, 1987
    Date of Patent: February 14, 1989
    Assignee: Sunstar Giken Kabushiki Kaisha
    Inventors: Yoshihiro Nakata, Tadao Kunishige
  • Patent number: 4791214
    Abstract: Improved bonding agent comprises a reaction product or mixture of an epoxyalkylalkoxysilane and a polyamine, and a resin composition comprising as the main ingredient conventional synthetic resin or synthetic rubber and the bonding agent as set forth above, which has excellent adhesion, particularly durability of adhesion, and is useful as an adhesive or a paint.
    Type: Grant
    Filed: July 16, 1986
    Date of Patent: December 13, 1988
    Assignee: Sunstar Giken Kabushiki Kaisha
    Inventors: Masahito Mori, Masaaki So, Hirohide Tomoyasu
  • Patent number: 4788233
    Abstract: A modified epoxy resin composition having improved flexibility which comprises a reaction product of an epoxy resin and a synthetic rubber reactive with an epoxy resin in the presence of a nonionic or anionic surfactant, which has uniform and stable dispersion state of the rubber in epoxy resin without increase of viscosity. The epoxy resin composition is useful as a material for adhesives and coating agents.
    Type: Grant
    Filed: November 18, 1987
    Date of Patent: November 29, 1988
    Assignee: Sunstar Giken Kabushiki Kaisha
    Inventors: Toshimori Sakakibara, Takahiro Nakano, Tatsuya Okuno
  • Patent number: 4781976
    Abstract: A skin covering for trims of automobiles having three layer structure comprising(a) a surface layer comrising a PVC having a mean degree of polymerization (P) of 2,000 or more (high polymerization PVC),(b) a foam layer comprising a blend of a crosslinking PVC and a PVC having a P of less than 1,500 (low polymerization PVC) and a foaming agent, and(c) a back layer comprising a low polymerization PVC,said skin covering having excellent processability with the cloth by high frequency welding and excellent vacuum forming properties and being useful for the facing of trims of automobiles.
    Type: Grant
    Filed: November 27, 1987
    Date of Patent: November 1, 1988
    Assignee: Sunstar Giken Kabushiki Kaisha
    Inventors: Akihito Fujita, Tamotu Nagao, Chikaaki Okamura, Fumihiko Yoshida
  • Patent number: 4767802
    Abstract: Epoxy resin composition comprising a uniform mixture of an epoxy resin and fine particles of a rubber adhered uniformly on the surface thereof with fine particles of an inorganic material, said composition having improved peel strength and toughness when cured and being useful as an adhesive or a molding material.
    Type: Grant
    Filed: October 20, 1987
    Date of Patent: August 30, 1988
    Assignee: Sunstar Giken Kabushiki Kaisha
    Inventors: Toshimori Sakakibara, Hirohide Tomoyasu
  • Patent number: 4750963
    Abstract: An improved method for the production of a laminated product of porous materials, which comprises applying a two-part aqueous adhesive comprising(A) a main composition comprising a water-soluble urethane prepolymer and a polyurethane rubber, and(B) a curing composition comprising water and optionally a conventional curing agent,to the surface of at least one of materials to be adhered, wherein at least one of the materials to be adhered is a porous material, and piling up the materials and then pressing. Said two-part aqueous adhesive has excellent adhesion, particularly initial adhesion, and hence can give the desired laminated products by pressing the piled materials for a very short period of time, and the laminated products have excellent feeling and handling and are useful as a material for seats in automobiles, offices, etc., carpets, cushions, and the like.
    Type: Grant
    Filed: June 19, 1986
    Date of Patent: June 14, 1988
    Assignee: Sunstar Giken Kabushiki Kaisha
    Inventors: Tadao Kunishige, Masaru Sugimori, Yoshiharu Kuramoto
  • Patent number: 4734447
    Abstract: An improved hot-melt adhesive which comprises a styrene block copolymer resin, a tackifier and a modified polybutene which is solid at room temperature, said hot-melt adhesive having excellent durable adhesion strength, cold resistance and heat resistance with improved open time, and a tackifier composition suitable for the preparation of the hot-melt adhesive.
    Type: Grant
    Filed: September 2, 1986
    Date of Patent: March 29, 1988
    Assignee: Sunstar Giken Kabushiki Kaisha
    Inventors: Yoshiya Hattori, Toshimori Sakakibara
  • Patent number: 4728684
    Abstract: A polyurethane adhesive comprising(a) a thermoplastic polyester urethane rubber which is grafted with at least one of the compounds selected from the group consisting of acrylic acid, an acrylic ester, methacrylic acid and a methacrylic ester,(b) a chlorinated rubber, and(c) an isocyanate compound as a crosslinking agent, and optionally(d) a polyoxyalkylene ether polyol having 2 or more ether groups in the molecule, and/or(e) a rosin resin and/or a rosin resin derivative,which is an organic solvent solution type, and exhibits excellent adhesion particularly in case that at least one of the substances to be adhered is a soft polyvinyl chloride sheet or film.
    Type: Grant
    Filed: January 27, 1986
    Date of Patent: March 1, 1988
    Assignee: Sunstar Giken Kabushiki Kaisha
    Inventors: Toshio Kadowaki, Masahito Mori, Masaaki Soh, Koichiro Sanji
  • Patent number: 4694093
    Abstract: A polyurethane resin composition, which comprises (A) a urethane prepolymer composition containing 0.5 to 15.0% by weight of an active isocyanate group which is prepared by reacting a polyoxyalkylene ether polyol and/or polyester polyol and an excess amount of a polyisocaylante compound, and (B) as an adhesion-promoting agent 0.05 to 5.0% by weight of a reaction product of an amine compound containing at least one alkoxysilyl group of the formula: ##STR1## wherein R.sup.1 and R.sup.2 are the same or different and are each a alkyl having 1 to 4 carbon atoms, and n is 0, 1 or 2, and an excess amount of a carbonyl compound. Said polyurethane resin composition has excellent adhesion properties and can show also excellent adhesiveness to metals which are hardly adhered with the conventional compositions and is useful as an adhesive, sealant and coating agent in various technical fields.
    Type: Grant
    Filed: October 2, 1985
    Date of Patent: September 15, 1987
    Assignee: Sunstar Giken Kabushiki Kaisha
    Inventors: Masaru Sugimori, Koichiro Sanji
  • Patent number: 4660501
    Abstract: A coating device comprises a liquid composition supply unit for continuously supplying a liquid composition at a fixed rate, and coating unit for applying the liquid composition to a surface of an article to be coated, the coating unit comprising a coating head composed of a coating member mounted on a supporting frame pivotally mounted to the head and connected to the liquid composition supply unit, and a driving unit for moving the coating unit along the surface of the article to be coated. A preferred embodiment of the device includes an anti-curing unit for preventing curing of the liquid composition on a surface of the coating member, comprising an anti-curing tank provided with an opening through which the coating unit may come in and out of the tank and a shutter which is adapted to open and close the opening. The coating device is particularly useful for applying the liquid composition to an article with a three-dimensional curved surface.
    Type: Grant
    Filed: May 21, 1985
    Date of Patent: April 28, 1987
    Assignee: Sunstar Giken Kabushiki Kaisha
    Inventors: Tsuyoshi Nagata, Katsuto Fujita
  • Patent number: 4532273
    Abstract: A two-part adhesive which comprises(i) as the main ingredient an emulsion consisting essentially of (a) an aqueous emulsion of a polymer or copolymer obtained from an essential monomer of an adduct of a tertiary amino group-containing acrylic or methacrylic acid ester and an epihalohydrin, (b) a tackifier resin selected from the group consisting of a petroleum hydrocarbon resin, a phenolic resin, a terpene resin, a rosin resin, a coumarone resin, and a coumarone-indene resin, and (c) an epoxy compound containing two or more epoxy groups in the molecule; and(ii) a curing agent selected from a primary or secondary amino group-containing compound. The adhesive is particularly useful for preparing automobile interior decorations, such as inside trims (e.g. doors, pillars), instrument panels, formed ceiling, and console box.
    Type: Grant
    Filed: May 21, 1984
    Date of Patent: July 30, 1985
    Assignee: Sunstar Giken Kabushiki Kaisha
    Inventors: Toshio Kadowaki, Koichiro Sanji
  • Patent number: 4501853
    Abstract: An improved curable epoxy resin composition comprising an epoxy resin and vulcanized rubber particles having a particle size of 0.5 to 30.mu. which are obtained by vulcanizing a dispersion of fine particles of a liquid rubber incompatible with the epoxy resin in the epoxy resin with a vulcanizing agent, and a method for the preparation of the same. The curable epoxy resin composition has excellent flexibility, mechanical strength and peel strength when cured with a curing agent, and is useful as an adhesive, coating material or molding material.
    Type: Grant
    Filed: September 29, 1982
    Date of Patent: February 26, 1985
    Assignee: Sunstar Giken Kabushiki Kaisha
    Inventors: Masaru Sugimori, Koichiro Sanji, Hirohide Tomoyasu, Toshimori Sakakibara
  • Patent number: 4478990
    Abstract: A room temperature curing elastic composition useful as a sealing material which comprises as a main component a polymer produced from(a) at least one acrylic ester monomer of the formula:CH.sub.2 .dbd.CHCOOR.sub.1wherein R.sub.1 is an alkyl having 2 to 8 carbon atoms;(b) at least one member selected from the group consisting of vinylalkoxysilane of the formula: ##STR1## wherein R.sub.2 is an alkyl having 1 to 4 carbon atoms, X is methoxy or ethoxy, and a is 0, 1 or 2; and a (meth)acryloxyalkoxysilane of the formula: ##STR2## wherein R.sub.3 is hydrogen or methyl, R.sub.4 is a divalent hydrocarbon group, R.sub.5 is an alkyl having 1 to 4 carbon atoms, Y is methoxy or ethoxy, and b is 0, 1 or 2; and(c) a chain transfer agent having a mercapto group.
    Type: Grant
    Filed: April 26, 1982
    Date of Patent: October 23, 1984
    Assignee: Sunstar Giken Kabushiki Kaisha
    Inventors: Kiyoshi Kohno, Satoshi Nishikawa, Yoshiya Hattori, Kohji Kitao