Patents Represented by Attorney Lawrence Pope

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  • Flame resistant sulfur-bearing copolycarbonate
    Patent number: 4515937
    Abstract: The invention relates to an aromatic, high molecular weight thermoplastic copolycarbonate comprising the reaction product of a sulfur-free aromatic diphenol, a sulfur-containing diphenol, a branching agent and a carbonic acid derivative, characterized in having improved flame resistance. The invention further relates to a process for the preparation of said copolycarbonate.
    Type: Grant
    Filed: September 9, 1980
    Date of Patent: May 7, 1985
    Assignee: Mobay Chemical Corporation
    Inventors: Arthur L. Baron, Sivaram Krishnan