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    Polycarbonates suitable for use in optical article
    4.
    发明授权
    Polycarbonates suitable for use in optical article 失效
    聚碳酸酯适用于光学制品

    公开(公告)号：US06248859B1

    公开(公告)日：2001-06-19

    申请号：US09347559

    申请日：1999-07-06

    申请人： Andrew James Caruso ,  Gary Charles Davis ,  Marc Brian Wisnudel ,  Ramesh Hariharan

    发明人： Andrew James Caruso ,  Gary Charles Davis ,  Marc Brian Wisnudel ,  Ramesh Hariharan

    IPC分类号： C08G6400

    CPC分类号： C08G64/06 ,  G11B7/2534

    摘要： The invention relates to polycarbonates comprising: (a) carbonate structural units corresponding to structure (I) where R1, R2, R3, and R4 are independently selected from the group consisting of C1-C6 alkyl, R5 is C1-C3 alkyl and n is 0, 1 or 2, and (b) carbonate structural units corresponding to structure (II):  where R6, R7, R10 and R11 are independently C1-C6 alkyl, R8 and R9 are independently H or C1-C5 alkyl, R12 is H or C1-C3 alkyl and n is 0, 1 or 2; where the polycarbonate has a glass transition temperature of from about 120° C. to about 185° C. and a water absorption of less than about 0.33%. This invention further relates to method of making these polycarbonates, optical articles made from these polycarbonates, and methods of making optical articles from these polycarbonates.

    摘要翻译： 本发明涉及聚碳酸酯，其包含：（a）对应于结构（I）的碳酸酯结构单元，其中R 1，R 2，R 3和R 4独立地选自C 1 -C 6烷基，R 5是C 1 -C 3烷基，n是 0,1或2，和（b）对应于结构（II）的碳酸酯结构单元：其中R 6，R 7，R 10和R 11独立地是C 1 -C 6烷基，R 8和R 9独立地是H或C 1 -C 5烷基，R 12是H或 C1-C3烷基，n为0,1或2;其中聚碳酸酯的玻璃化转变温度为约120℃至约185℃，吸水率小于约0.33％。本发明还涉及 制造这些聚碳酸酯的方法，由这些聚碳酸酯制成的光学制品，以及由这些聚碳酸酯制造光学制品的方法。