Patents Assigned to Ukima Colour & Chemicals Mfg. Co., Ltd.
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Patent number: 5321083Abstract: Disclosed herein are coating compositions comprising a fluoropolymer modified with a modifier. The modifier is a reaction product of at least one compound selected from polysiloxane compounds, fluorine-containing compounds and silane coupling agents, each containing at least one reactive organic functional group, with an organic polyisocyanate; and contains at least one free isocyanate group.Type: GrantFiled: May 12, 1992Date of Patent: June 14, 1994Assignees: Dainichiseika Color & Chemicals Mfg. Co., Ltd., Ukima Colour & Chemicals Mfg. Co., Ltd.Inventors: Kazuyuki Hanada, Iwao Misaizu, Katsumi Kuriyama
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Patent number: 5262492Abstract: Siloxane-modified polyester resins are disclosed. These resins comprise a copolymer of a siloxane compound, which contains at least one active hydrogen atom, and a lactone compound. The copolymer is substantially free of unreacted siloxane compound. The siloxane-modified polyester resins are useful for the production of heat-sensitive recording material, magnetic recording media and release agents. Processes for the production of the siloxane-modified polyester resins are also disclosed.Type: GrantFiled: April 9, 1992Date of Patent: November 16, 1993Assignees: Dainichiseika Color & Chemicals Mfg. Co., Ltd., Ukima Colour & Chemicals Mfg. Co., Ltd.Inventors: Kazuyuki Hanada, Iwao Misaizu, Akihiko Shibuya, Katsumi Kuriyama
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Patent number: 5192736Abstract: A heat-sensitive recording material comprises a base sheet material, a heat-sensitive recording layer provided on one side of the base sheet material and a heat-resistant layer provided on the other side of the base sheet material. The heat-resistant layer is formed of a resin which is modified with a silane coupling agent, which contains at least one free isocyanate group, and containing one or more hydrolyzable silyl groups in side chains of its molecule.Type: GrantFiled: December 24, 1991Date of Patent: March 9, 1993Assignees: Dainichiseika Color & Chemicals Mfg. Co., Ltd., Ukima Colour & Chemicals Mfg. Co., Ltd.Inventors: Kazuyuki Hanada, Iwao Misaizu, Masashi Saito, Katsutoshi Torii, Katsumi Kuriyama
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Patent number: 5068295Abstract: A water and oil repellant contains a copolymer of a first vinyl monomer having a perfluoroalkyl group, a second vinyl monomer having a polyorganosiloxane chain and a third vinyl monomer having an isocyanate group or blocked isocyanate group as essential components. As an alternative, a water and oil repellant contains a copolymer of a first vinyl monomer having a polyorganosiloxane chain and a second vinyl monomer having an isocyanate group or blocked isocyanate group, in combination with a water and oil repellant compound having a perfluoroalkyl group.Type: GrantFiled: February 9, 1990Date of Patent: November 26, 1991Assignees: Dainichiseika Color & Chemicals Mfg. Co., Ltd., Ukima Colour & Chemicals Mfg. Co., Ltd.Inventors: Iwao Misaizu, Kazuyuki Hanada, Akihiko Shibuya, Katsumi Kuriyama
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Patent number: 5024893Abstract: A polyurethane resin is composed of a polyol component, a polyisocyanate component and optionally, a chain extender component. At least a portion of the polyol component or chain extender component is a siloxane polyol component represented by the following formula (1) and/or formula (2): ##STR1## wherein R means an alkyl group, R' denotes a hydrogen atom or C.sub.1-5 alkyl group, k, l and m stand for 1-250, 0-5 and 0-50 respectively, and n is an integer of 1-3 in the formula (1) and an integer of 2-3 in the formula (2). A thermal recording material containing the polyurethane resin as a heat-resistant layer is also disclosed.Type: GrantFiled: May 2, 1990Date of Patent: June 18, 1991Assignees: Dainichiseika Color & Chemicals Mfg. Co., Ltd., Ukima Colour & Chemicals Mfg. Co. Ltd.Inventors: Kazuyuki Hanada, Kohichi Kuroda, Iwao Misaizu, Masashi Kashimura, Tomoko Goto, Katsumi Kuriyama
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Patent number: 4942212Abstract: A polyurethane resin is composed of a polyol component, a polyisocyanate component and optionally, a chain extender component. At least a portion of the polyol component or chain extender component is a siloxane polyol component represented by the following formula (1) and/or formula (2): ##STR1## wherein R means an alkyl group, R' denotes a hydrogen atom or C.sub.1-5 alkyl group, k, l and m stand for 1-250, 0-5 and 0-50 respectively, and n is an integer of 1-3 in the formula (1) and an integer of 2-3 in the formula (2). A thermal recording material containing the polyurethane resin as a heat-resistant layer is also disclosed.Type: GrantFiled: December 6, 1988Date of Patent: July 17, 1990Assignees: Dainichiseika Color & Chemicals Mfg. Co., Ltd., Ukima Colour & Chemicals Mfg. Co., Ltd.Inventors: Kazuyuki Hanada, Kohichi Kuroda, Iwao Misaizu, Masashi Kashimura, Tomoko Goto, Katsumi Kuriyama
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Patent number: 4921761Abstract: A polyester imide resin is made of a reaction product of (A) a dicarboxylic acid containing a 5-membered cyclic imido group or a derivative thereof, or a mixture thereof, (B) a tricarboxylic acid or a derivative thereof, or a mixture thereof, (C) a dihydric alcohol and (D) a trihydric aliphatic alcohol.Type: GrantFiled: May 4, 1988Date of Patent: May 1, 1990Assignees: Dainichiseika Color & Chemicals Mfg. Co., Ltd., Ukima Colour & Chemicals Mfg. Co., Ltd.Inventors: Shigeru Yamada, Setsuo Terada
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Patent number: 4910087Abstract: A heat-sensitive recording medium is composed of a base sheet, a heat-sensitive recording layer provided on one side of the base sheet and a heat-resistant layer provided on the other side of the base sheet. The heat-resistant layer is made of a resin containing siloxane bonds in its molecule.Type: GrantFiled: August 27, 1987Date of Patent: March 20, 1990Assignees: Dainichiseika Color & Chemicals Mfg. Co., Ltd., Ukima Colour & Chemicals Mfg. Co., Ltd.Inventors: Hideyasu Torii, Kazuyuki Hanada
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Patent number: 4895829Abstract: A heat-sensitive recording medium is composed of a base sheet, a heat-sensitive recording layer provided on one side of the base sheet and a heat-resistant layer provided on the other side of the base sheet. The heat-resistant layer is made of a film-forming resin modified with a modifier, which is a reaction product of a silicone compound containing at least one reactive organic functional group and an organic polyisocyanate.Type: GrantFiled: August 19, 1987Date of Patent: January 23, 1990Assignees: Dainichiseika Color & Chemicals Mfg. Co., Ltd., Ukima Colour & Chemicals Mfg. Co., Ltd.Inventors: Kazuyuki Hanada, Susumu Nakamura
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Patent number: 4853418Abstract: A polyurethane emulsion is composed of an organic solvent solution of a polyurethane resin containing silicone segments and/or fluorocarbon segments as backbones and/or side chains and water emulsified in the organic solvent solution. A sheet-like porous material having a porous layer of a polyurethane resin provided on a base material is produced by using the above polyurethane emulsion to form the porous layer.Type: GrantFiled: August 8, 1988Date of Patent: August 1, 1989Assignees: Dainichiseika Color & Chemicals Mfg. Co., Ltd., Ukima Colour & Chemicals Mfg. Co., Ltd.Inventors: Kazuyuki Hanada, Iwao Misaizu, Masashi Kashimura, Tomoko Goto, Katsumi Kuriyama
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Patent number: 4746684Abstract: A polyurethane dispersion contains (A) an organic solvent, (B) a polyurethane resin having a molecular weight of 20,000-500,000, and (C) fine particles obtained from an active-hydrogen containing polyfunctional compound, which contains functional groups having a molecular weight of 50 or smaller per functional group, and an organic polyisocyanate. The dispersion can be converted into an emulsion by emulsifying water therein. A sheet-like porous material is also obtained by impregnating and/or coating a base material with the emulsion, causing the thus-coated emulsion to gel and then drying the resultant base material. The dispersion has excellent stability. The emulsion can be gelatinized at a relatively high temperature in a rather short period time, thereby permitting efficient production of the sheet-like porous material. The sheet-like material has a very fine porous structure, is excellent in various properties and has superb water vapor transmission characteristics.Type: GrantFiled: May 13, 1987Date of Patent: May 24, 1988Assignees: Dainichiseika Color & Chemicals Mfg. Co., Ltd., Ukima Colour & Chemicals Mfg. Co., Ltd.Inventors: Katsumi Kuriyama, Misao Ichihara, Iwao Misaizu, Masashi Kashimura
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Patent number: 4510186Abstract: A process for preparing a porous sheet material, which comprises impregnating and/or coating on a substrate a water-in-oil type polyurethane emulsion (d) comprising a hydrophobic polyurethane (a), a hydrophilic polyurethane (b), and organic solvent (c) and water, and drying it, characterized in that said hydrophobic polyurethane (a) is a hydrophobic polyurethane dispersion (e) obtained by reacting a hydrophobic polyol, an organic diisocyanate and a chain extender is an organic solvent (c) which has a limited compatibility with water and in which the polyurethane thereby formed is substantially insoluble; said hydrophilic polyurethane (b) is a polyurethane containing about 20 to about 40% by weight, based on the total polymer, of polyoxyethylene groups; and the weight ratio of (a):(b) is about 90-99: about 10-1.Type: GrantFiled: July 26, 1983Date of Patent: April 9, 1985Assignees: Dainichi Seika Color & Chemicals Mfg. Co., Ltd., Ukima Colour & Chemicals Mfg. Co., Ltd.Inventors: Katsumi Kuriyama, Isao Kondo, Iwao Misaizu
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Patent number: 4347338Abstract: A thermosettable polyurethane product is prepared by blending a compound having two or more terminal isocyanate groups to a thermoplastic resin which is inert to said isocyanate group to prepare an isocyanate compound batch, and further blending the isocyanate compound batch to a thermoplastic polyurethane resin and fabricating the resulting mixture.Type: GrantFiled: May 19, 1981Date of Patent: August 31, 1982Assignees: Dainichiseika Color & Chemicals Mfg. Co., Ltd., Ukima Colour & Chemicals Mfg. Co., Ltd.Inventors: Hideyasu Torii, Susumu Nakamura
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Patent number: 4319006Abstract: A polyamideimide-esterimide heat resistant resin is made by connecting aromatic polyamideimide components having amide groups and imide groups in the main chain to polyesterimide components having ester groups and imide groups in the main chain by esterification.Type: GrantFiled: November 25, 1980Date of Patent: March 9, 1982Assignees: Dainichiseika Color & Chemicals Mfg. Co. Ltd., Ukima Colour & Chemicals Mfg. Co. Ltd.Inventors: Shigeru Yamada, Tadao Ikeda