Patents Assigned to General Electric Plastics Japan
  • Method for the preparation, of copolymeric polycarbonates
    Patent number: 5401826
    Abstract: A copolymeric polycarbonate containing repeating constituent units having formula [I] below and repeating constituent units having formula [II] below in a molar ratio of from 98:2 to 40:60. ##STR1## The above-described copolymeric polycarbonates have excellent resistance to chemicals, heat resistance and flame retardancy without compromising the impact resistance and good hues intrinsic to polycarbonates.
    Type: Grant
    Filed: December 21, 1993
    Date of Patent: March 28, 1995
    Assignee: General Electric Plastics Japan
    Inventors: Takeshi Sakashita, Tomoaki Shimoda, Kotaro Kishimura