Patents by Inventor Hidemasa Ohmura

Hidemasa Ohmura has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4373053
    Abstract: A color deepening agent comprises an aqueous resin composition obtained by polymerizing a monomer having a polymerizable unsaturated bond, in the presence of a polyurethane emulsion having a thermosetting reactivity, the refractive index of a dry film of said aqueous resin composition being lower than 1.50.
    Type: Grant
    Filed: July 21, 1981
    Date of Patent: February 8, 1983
    Assignee: Kao Soap Co., Ltd.
    Inventors: Toshio Sato, Sho Suzuki, Hidemasa Ohmura
  • Patent number: 4353958
    Abstract: Green ceramic tapes are prepared which comprise a finely divided ceramic powder and a water-compatible polyurethane resin binder. The green tapes are prepared by casting a water-based slip containing the ceramic powder and the water-compatible polyurethane resin binder in the form of the tape and then drying the formed tape. The drying is preferably conducted in two stages, in the first of which a relatively humid atmosphere is maintained.
    Type: Grant
    Filed: March 20, 1980
    Date of Patent: October 12, 1982
    Assignees: Narumi China Corporation, Kao Soap Co., Ltd.
    Inventors: Katsuhiko Kita, Junzo Fukuda, Hidemasa Ohmura, Takeya Sakai
  • Patent number: 4190567
    Abstract: A curable film-forming cationic polyurethane emulsion containing a compound having an epoxide group, as a curing agent.
    Type: Grant
    Filed: December 2, 1977
    Date of Patent: February 26, 1980
    Assignee: Kao Soap Co., Ltd.
    Inventors: Hidemasa Ohmura, Masahiro Saito
  • Patent number: 4036801
    Abstract: An aqueous amphoteric polyurethane emulsion is prepared by reacting an isocyanate-terminated urethane prepolymer with an excess of a polyalkylene polyamine to form a polyurethane-urea-polyamine; reacting a portion of the free amino groups contained in the resulting product with a blocked polyisocyanate having one free isocyanate group; rendering the remaining amino groups contained in the resulting product amphoteric either (I) by reacting said amino groups with a compound selected from the group consisting of 1,3-propane sultone, 1,4-butane sultone, .beta.-propiolactone, .gamma.-butyrolactone, .epsilon.-caprolactone, .delta.-valerolactone and a monohalogenated sodium carboxylate having the formulaX(CH.sub.2).sub.
    Type: Grant
    Filed: July 14, 1976
    Date of Patent: July 19, 1977
    Assignee: Kao Soap Co., Ltd.
    Inventors: Kazuo Matsuda, Hidemasa Ohmura, Takeyo Sakai
  • Patent number: 4016120
    Abstract: Aqueous cationic polyurethane emulsions are prepared by reacting an isocyanate-terminated urethane prepolymer with an excess of a polyalkylene polyamine to form a polyurethane-urea-polyamine, and then partially reacting the free amino groups in said product with a blocked polyisocyanate having a single free isocyanate group, followed by mixing with an aqueous solution of an acid.
    Type: Grant
    Filed: July 12, 1976
    Date of Patent: April 5, 1977
    Assignee: Kao Soap Co., Ltd.
    Inventors: Kazuo Matsuda, Hidemasa Ohmura, Takeyo Sakai
  • Patent number: 4016123
    Abstract: A process for the preparation of cationic resin aqueous emulsions useful for treating fiber-containing articles, comprising reacting an isocyanate-terminated urethane prepolymer with an excess of a polyalkylene-polyamine to form a polyurethane-urea-polyamine, reacting a part of the amino groups in the thus-formed polyurethane-urea-polyamine with a compound selected from the group consisting of alkyl isocyanates having an alkyl group of 12 to 22 carbon atoms, acyl chlorides having an alkyl group of 12 to 22 carbon atoms and .alpha.-olefin epoxides having 12 to 22 carbon atoms, thereby to introduce a long-chain alkyl group into the molecule of the polyurethane-urea-polyamine, and mixing the alkyl-containing polyurethane-urea-polyamine with an aqueous solution of an acid thereby to convert the remaining amino groups to cations.
    Type: Grant
    Filed: July 11, 1975
    Date of Patent: April 5, 1977
    Assignee: Kao Soap Co., Ltd.
    Inventors: Kazuo Matsuda, Hidemasa Ohmura, Yukihisa Niimi
  • Patent number: 4016121
    Abstract: An aqueous polyurethane emulsion is prepared by reacting a polyhydroxyl component containing 15 to 80% by weight of a polyoxyethylene glycol having a molecular weight of 200 to 10,000 with an excess of an organic polyisocyanate to obtain an isocyanate-terminated urethane prepolymer, reacting that prepolymer with an excess of a polyalkylene polyamine thereby to form a polyurethane-urea-polyamine, reacting the free amino groups in the polyurethane-urea-polyamine with a blocked polyisocyanate having a single free isocyanate group, and mixing the resulting product with water, or reacting said resulting product with a cyclic dicarboxylic acid anhydride followed by mixing with water.
    Type: Grant
    Filed: July 12, 1976
    Date of Patent: April 5, 1977
    Assignee: Kao Soap Co., Ltd.
    Inventors: Kazuo Matsuda, Hidemasa Ohmura, Takeyo Sakai
  • Patent number: 4016122
    Abstract: An aqueous anionic polyurethane emulsion is prepared by reacting an isocyanate-terminated urethane prepolymer with an excess of a polyalkylene polyamine thereby to form a polyurethane-urea-polyamine, reacting a portion of the free amino groups of said polyurethane-urea-polyamine with a blocked polyisocyanate having a single free isocyanate group, reacting the resulting product with a cyclic dicarboxylic acid anhydride, and mixing the resulting product with an aqueous solution of a basic substance.
    Type: Grant
    Filed: July 14, 1976
    Date of Patent: April 5, 1977
    Assignee: Kao Soap Co., Ltd.
    Inventors: Kazuo Matsuda, Hidemasa Ohmura, Takeyo Sakai
  • Patent number: 4012349
    Abstract: A process for preparing non-ionic polyurethane emulsions comprising chain-extending (A) an isocyanate-terminated urethane prepolymer (formed by reaction of a polyhydroxyl reactant having a molecular weight of 200 to 10,000 and a stoichiometric excess of a polyisocyanate), with (B) a polyalkylene polyamine as chain extending compound, thereby to form a polyurethane-urea polyamine product, mixing the said polyamine product with water or reacting the product with a cyclic dicarboxylic acid anhydride and then mixing the reaction product with water; said process being characterized in that a water-soluble polyoxyethylene glycol comprises 15 to 80% by weight of the polyhydroxyl reactant, and the said polyalkylene polyamine used as the chain-extending compound has at least two primary or secondary amino groups and a functional group having the formula --CH(OH)--CH.sub.2 X in which X is Cl or Br.
    Type: Grant
    Filed: January 12, 1976
    Date of Patent: March 15, 1977
    Assignee: Kao Soap Co., Ltd.
    Inventors: Kazuo Matsuda, Hidemasa Ohmura, Hirakazu Aritaki
  • Patent number: 4008196
    Abstract: A process for the preparation of amphoteric resinous aqueous emulsions useful for the treatment of fiber-containing products, comprising reacting an isocyanate-terminated urethane prepolymer with an excess of a polyalkylene polyamine to form a polyurethane-urea-polyamine, then partially reacting the amino groups in the polyurethane-urea-polyamine with a compound selected from the group consisting of alkyl isocyanates in which the alkyl group has 12 to 22 carbon atoms and alpha-olefin epoxides having 12 to 22 carbon atoms, thereby to introduce a long-chain alkyl group into the molecule, reacting the thus-formed product having some unreacted amino groups with a member selected from the group consisting of 1,3-propanesultone, 1,4-butanesultone, .beta.-propiolactone, .epsilon.-caprolactone and .delta.-valerolactone, thereby to render the polymer amphoteric, and mixing the resulting polymer with water.
    Type: Grant
    Filed: August 15, 1975
    Date of Patent: February 15, 1977
    Assignee: Kao Soap Co., Ltd.
    Inventors: Kazuo Matsuda, Hidemasa Ohmura, Yukihisa Niimi
  • Patent number: 3997490
    Abstract: A process for the preparation of thermosetting resin emulsions, which comprises (1) reacting an isocyanate-terminated urethane prepolymer with an excess of a polyalkylene-polyamine to form a polyurethane-urea-polyamine, (2) reacting the thus-formed polyurethane-urea-polyamine with an epihalohydrin, (3) rendering the resulting reaction product amphoteric by reacting said reaction product with (a) a compound selected from the group consisting of 1,3-propane sultone, 1,4-butane sultone, .beta.-propiolactone, .epsilon.-caprolactone, .delta.-valerolactone and sodium monohalogenocarboxylates having the formula X(CH.sub.2).sub.
    Type: Grant
    Filed: February 3, 1975
    Date of Patent: December 14, 1976
    Assignee: Kao Soap Co., Ltd.
    Inventors: Kazuo Matsuda, Hidemasa Ohmura, Hirakazu Aritaki
  • Patent number: 3997491
    Abstract: A process for the preparation of anionic resinous aqueous emulsions useful for the treatment of fiber-containing products, comprising reacting an isocyanate-terminated urethane prepolymer with an excess of a polyalkylene polyamine to form a polyurethane-urea-polyamine, then reacting a part of the amino groups in the polyurethane-urea-polyamine with a compound selected from the group consisting of alkyl isocyanates in which the alkyl group has 12 to 22 carbon atoms and alpha-olefin epoxides having 12 to 22 carbon atoms, thereby to introduce a long-chain alkyl group into the molecule, reacting the thus-formed product having some unreacted amino groups with a cyclic dicarboxylic acid anhydride, and mixing the resulting reaction product with an aqueous solution of a basic substance.
    Type: Grant
    Filed: August 15, 1975
    Date of Patent: December 14, 1976
    Assignee: Kao Soap Co., Ltd.
    Inventors: Kazuo Matsuda, Hidemasa Ohmura, Yukihisa Niimi
  • Patent number: 3991026
    Abstract: A process for the preparation of anionic thermosetting resin emulsions, comprising the steps of (1) reacting an isocyanate-terminated urethane prepolymer with an excess of a polyalkylene-polyamine to form a polyurethane-urea-polyamine, (2) then reacting the thus-formed polyurethane-urea-polyamine with an epihalohydrin, (3) reacting the resulting reaction product of step (3) with a cyclic dicarboxylic acid anhydride, and then (4) mixing the resulting reaction product of step (3) with an aqueous solution of a basic substance to form an emulsion.
    Type: Grant
    Filed: February 3, 1975
    Date of Patent: November 9, 1976
    Assignee: Kao Soap Co., Ltd.
    Inventors: Kazuo Matsuda, Hidemasa Ohmura, Hirakazu Aritaki
  • Patent number: 3951897
    Abstract: A process for preparing non-ionic polyurethane emulsions comprising chain-extending (A) an isocyanate-terminated urethane prepolymer (formed by reaction of a polyhydroxyl reactant having a molecular weight of 200 to 10,000 and a stoichiometric excess of a polyisocyanate), with (B) a polyalkylene polyamine as chain extending compound, thereby to form a polyurethane-urea polyamine product, mixing the said polyamine product with water or reacting the product with a cyclic dicarboxylic acid anhydride and then mixing the reaction product with water; said process being characterized in that a water-soluble polyoxyethylene glycol comprises 15 to 80% by weight of the polyhydroxyl reactant, and the said polyalkylene polyamine used as the chain-extending compound has at least two primary or secondary amino groups and a function group having the formula --CH(OH)--CH.sub.2 X in which X is Cl or Br.
    Type: Grant
    Filed: November 26, 1974
    Date of Patent: April 20, 1976
    Assignee: Kao Soap Co., Ltd.
    Inventors: Kazuo Matsuda, Hidemasa Ohmura, Hirakazu Aritaki