Patents by Inventor Hide Umemura

Hide Umemura 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).

  • Propylene polymer composition
    Patent number: 4863995
    Abstract: A propylene polymer composition is disclosed which comprises:(a) a crystalline propylene polymer having a melt-flow index of from 0.01 to 100 g/10 min.;(b) a first ethylene copolymer comprising ethylene and from about 3.0 to 50% by weight of at least one copolymerizable monomer selected from a vinyl ester and an unsaturated carboxylic acid ester; and at least one of(c) a first modified propylene polymer produced by reacting 100 parts by weight of a propylene polymer with from about 0.01 to 10 parts by weight of an organic unsaturated compound having at least one hydroxyl group and from about 0.01 to 10 parts by weight of an organic peroxide, and(d) a second ethylene copolymer comprising ethylene and at least one copolymerizable ethylenically unsaturated monomer having at least one epoxy group.The composition has excellent adhesion to two-component system polychloroprene type adhesives and two-component system chlorinated polypropylene adhesives.
    Type: Grant
    Filed: July 15, 1988
    Date of Patent: September 5, 1989
    Assignee: Showa Denko Kabushiki Kaisha
    Inventors: Hirobumi Murakami, Tsutomu Suda, Mitunobu Machida, Hide Umemura