Patents Examined by Frederick Kain
  • Polyamideimides containing 3,4'-diamino-diphenylether as diamine component and process for preparing the same
    Patent number: 5068307
    Abstract: A polyamideimide having an inherent viscosity of above 0.48 which comprises a unit of the following formula (II) ##STR1## and a unit of the following formula (IV) ##STR2## as main units forming the molecular chains of the polyamideimide, and an intimate mixture of the polyamideimide and a plasticising material for the polyamideimide.
    Type: Grant
    Filed: November 8, 1989
    Date of Patent: November 26, 1991
    Assignee: Teijin Limited
    Inventors: Shigeyoshi Hara, Hiroo Inata, Shunichi Matsumura