Patents by Inventor Tateshi Kurino

Tateshi Kurino 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).

  • Vinyl acetate-ethylene copolymer emulsion and process for producing the same
    Patent number: 5110856
    Abstract: A vinyl acetate-ethylene copolymer emulsion is disclosed, comprising a vinyl acetate-ethylene copolymer composed of from 10 to 40% by weight of an ethylene unit and from 90 to 60% by weight of a vinyl acetate unit and an emulsifying dispersant in an amount of from 2.5 parts by weight or more but less than 5.0 parts by weight per 100 parts by weight of the vinyl acetate unit, and having a mean particle size of not larger than 0.9 .mu.m and a solids content of from 65 to 75% by weight, wherein the emulsifying dispersant contains from 1.0 to 1.9 parts by weight of partially saponified polyvinyl alcohol prepared so as to have an average polymerization degree of from 300 to 1,000 and from 1.0 to 3.0 parts by weight of a polyoxyethylene nonionic surface active agent having an HLB of from 16.5 to 17.5 per 100 parts by weight of the vinyl acetate unit. A process for producing the vinyl acetate-ethylene copolymer is also disclosed.
    Type: Grant
    Filed: September 17, 1991
    Date of Patent: May 5, 1992
    Assignee: Sumitomo Chemical Co., Ltd.
    Inventors: Takeo Oyamada, Yoshito Taira, Masayoshi Nitta, Yasuo Kaneshima, Tateshi Kurino, Shizuo Narisawa
  • Vinyl acetate-ethylene copolymer emulsion and process for producing the same
    Patent number: 5070134
    Abstract: A vinyl acetate-ethylene copolymer emulsion is disclosed, comprising a vinyl acetate-ethylene copolymer composed of from 10 to 40% by weight of an ethylene unit and from 90 to 60% by weight of a vinyl acetate unit and an emulsifying dispersant in an amount of from 2.5 parts by weight or more but less than 5.0 parts by weight per 100 parts by weight of the vinyl acetate unit, and having a mean particle size of not larger than 0.9 .mu.m and a solids content of from 65 to 75% by weight, wherein the emulsifying dispersant contains from 1.0 to 1.9 parts by weight of partially saponified polyvinyl alcohol prepared so as to have an average polymerization degree of from 300 to 1,000 and from 1.0 to 3.0 parts by weight of a polyoxyethylene nonionic surface active agent having an HLB of from 16.5 to 17.5 per 100 parts by weight of the vinyl acetate unit. A process for producing the vinyl acetate-ethylene copolymer is also disclosed.
    Type: Grant
    Filed: February 28, 1990
    Date of Patent: December 3, 1991
    Assignee: Sumitomo Chemical Co., Ltd.
    Inventors: Takeo Oyamada, Yoshito Taira, Masayoshi Nitta, Yasuo Kaneshima, Tateshi Kurino, Shizuo Narisawa