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    • 7. 发明申请
    • High glass transition temperature copolycarbonates, methods of manufacture, and uses thereof
    • 高玻璃化转变温度共聚碳酸酯,其制造方法及其应用
    • US20070123686A1
    • 2007-05-31
    • US11289063
    • 2005-11-29
    • James MahoodEmine Gurel
    • James MahoodEmine Gurel
    • C08G64/00
    • C08G64/12C08J5/18C08J2369/00
    • A copolycarbonate is discloses, comprising units of the formula (1) wherein 70 to 99.5 mole percent of the total number of R1 groups are derived from a dihydroxy compound of formula (2) wherein R2 and R3 are each independently a halogen or a C1-6 alkyl group, R4 is a methyl or a phenyl group, and c is independently 0 to 4; and 0.5 to 30 mole percent of the total number of R1 groups are derived from a dihydroxy compound of formula (3) HO—R5—OH  (3) wherein at least 60% of the R5 groups are aromatic, and the dihydroxy compound of formula (3) is not the same as the dihydroxy compound of formula (2), and wherein the copolycarbonate has a glass transition temperature of 250° C. or higher.
    • 公开了一种共聚碳酸酯,其包含式(1)的单元,其中R 1〜12的总数的70-99.5摩尔%衍生自式(2)的二羟基化合物,其中R 1, 2和R 3各自独立地为卤素或C 1-6烷基,R 4为甲基或 苯基,c独立地为0〜4; 并且R 1〜12个基团的总数的0.5〜30摩尔%来源于式(3)的二羟基化合物<?in-line-formula description =“In-line Formulas”end =“ 铅“→HO-R 5 -OH(3)<?in-line-formula description =”In-line Formulas“end =”tail“?>其中至少60%的R 式(3)的二羟基化合物与式(2)的二羟基化合物不同,其中共聚碳酸酯的玻璃化转变温度为250℃,或 更高。