Patents Assigned to Sunstar Giken Kabushiki
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Patent number: 4906516Abstract: 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: GrantFiled: March 23, 1989Date of Patent: March 6, 1990Assignee: Sunstar Giken Kabushiki KaishaInventors: Chikaaki Okamura, Tamotu Nagao
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Patent number: 4898919Abstract: 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: GrantFiled: July 22, 1988Date of Patent: February 6, 1990Assignee: Sunstar Giken Kabushiki KaishaInventors: Ryuichi Ueda, Masahito Mori, Kohske Torii
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Patent number: 4865904Abstract: 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: GrantFiled: September 9, 1987Date of Patent: September 12, 1989Assignee: Sunstar Giken Kabushiki KaishaInventors: Chikaaki Okamura, Akihito Fujita, Tamotu Nagao, Fumihiko Yoshida
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Patent number: 4851481Abstract: 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: GrantFiled: December 6, 1988Date of Patent: July 25, 1989Assignee: Sunstar Giken Kabushiki KaishaInventors: Akira Kuriyama, Tatsuya Okuno
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Patent number: 4849183Abstract: 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: GrantFiled: August 28, 1987Date of Patent: July 18, 1989Assignee: Sunstar Giken Kabushiki KaishaInventor: Akira Kuriyama
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Patent number: 4818804Abstract: 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: GrantFiled: August 28, 1987Date of Patent: April 4, 1989Assignee: Sunstar Giken Kabushiki KaishaInventors: Akira Kuriyama, Mikiko Yamaguchi
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Patent number: 4804710Abstract: 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: GrantFiled: December 30, 1987Date of Patent: February 14, 1989Assignee: Sunstar Giken Kabushiki KaishaInventors: Yoshihiro Nakata, Tadao Kunishige
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Patent number: 4791214Abstract: 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: GrantFiled: July 16, 1986Date of Patent: December 13, 1988Assignee: Sunstar Giken Kabushiki KaishaInventors: Masahito Mori, Masaaki So, Hirohide Tomoyasu
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Patent number: 4788233Abstract: 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: GrantFiled: November 18, 1987Date of Patent: November 29, 1988Assignee: Sunstar Giken Kabushiki KaishaInventors: Toshimori Sakakibara, Takahiro Nakano, Tatsuya Okuno
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Patent number: 4781976Abstract: 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: GrantFiled: November 27, 1987Date of Patent: November 1, 1988Assignee: Sunstar Giken Kabushiki KaishaInventors: Akihito Fujita, Tamotu Nagao, Chikaaki Okamura, Fumihiko Yoshida
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Patent number: 4767802Abstract: 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: GrantFiled: October 20, 1987Date of Patent: August 30, 1988Assignee: Sunstar Giken Kabushiki KaishaInventors: Toshimori Sakakibara, Hirohide Tomoyasu
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Patent number: 4750963Abstract: 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: GrantFiled: June 19, 1986Date of Patent: June 14, 1988Assignee: Sunstar Giken Kabushiki KaishaInventors: Tadao Kunishige, Masaru Sugimori, Yoshiharu Kuramoto
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Patent number: 4734447Abstract: 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: GrantFiled: September 2, 1986Date of Patent: March 29, 1988Assignee: Sunstar Giken Kabushiki KaishaInventors: Yoshiya Hattori, Toshimori Sakakibara
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Patent number: 4728684Abstract: 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: GrantFiled: January 27, 1986Date of Patent: March 1, 1988Assignee: Sunstar Giken Kabushiki KaishaInventors: Toshio Kadowaki, Masahito Mori, Masaaki Soh, Koichiro Sanji
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Patent number: 4694093Abstract: 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: GrantFiled: October 2, 1985Date of Patent: September 15, 1987Assignee: Sunstar Giken Kabushiki KaishaInventors: Masaru Sugimori, Koichiro Sanji
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Patent number: 4660501Abstract: 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: GrantFiled: May 21, 1985Date of Patent: April 28, 1987Assignee: Sunstar Giken Kabushiki KaishaInventors: Tsuyoshi Nagata, Katsuto Fujita
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Patent number: 4532273Abstract: 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: GrantFiled: May 21, 1984Date of Patent: July 30, 1985Assignee: Sunstar Giken Kabushiki KaishaInventors: Toshio Kadowaki, Koichiro Sanji
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Patent number: 4501853Abstract: 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: GrantFiled: September 29, 1982Date of Patent: February 26, 1985Assignee: Sunstar Giken Kabushiki KaishaInventors: Masaru Sugimori, Koichiro Sanji, Hirohide Tomoyasu, Toshimori Sakakibara
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Patent number: 4479840Abstract: A two-part adhesive comprising an aqueous synthetic resin emulsion adhesive and a gelling agent comprising a combination of (a) a member selected from the group consisting of calcium pantothenate, glycine calcium salt, alanine calcium salt, serine calcium salt, threonine calcium salt, methionine calcium salt, phenylalanine calcium salt and calcium aspartate and (b) a member selected from the group consisting of an organic acid salt and an inorganic acid salt, which can bond without any temporary tacking or fixing means, and a method for bonding two substances together with said two-part adhesive.Type: GrantFiled: March 1, 1983Date of Patent: October 30, 1984Assignee: Sunstar Giken KabushikiInventors: Shuji Takegawa, Tadao Kunishige
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Patent number: 4478990Abstract: 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: GrantFiled: April 26, 1982Date of Patent: October 23, 1984Assignee: Sunstar Giken Kabushiki KaishaInventors: Kiyoshi Kohno, Satoshi Nishikawa, Yoshiya Hattori, Kohji Kitao