Patents Assigned to Japan Synthetic Rubber Co., Ltd., a Japanese Corporation
  • Liquid crystal-aligning agent
    Patent number: 5698135
    Abstract: A liquid crystal-aligning agent comprising at least one of a polyamic acid obtained by reacting (A) a tetracarboxylic acid dianhydride consisting of 70 to 98 mole % of a dianhydride of a tetracarboxylic acid such as ##STR1## or the like, and 2 to 30 mole % of a dianhydride of a cyclobutanetetracarboxylic acid, and (B) a diamine compound, and a polymer obtained by imidizing the polyamic acid.
    Type: Grant
    Filed: December 7, 1995
    Date of Patent: December 16, 1997
    Assignee: Japan Synthetic Rubber Co., Ltd., a Japanese Corporation
    Inventors: Michinori Nishikawa, Shigeo Kawamura, Yasuo Matsuki, Kyouyu Yasuda, Tsuyoshi Miyamoto