Polycarbonates suitable for use in optical article
    2.
    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

    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。