Method for preparation of block copolysiloxanecarbonates
    1.
    发明授权
    Method for preparation of block copolysiloxanecarbonates 失效
    嵌段共聚硅氧烷碳酸酯的制备方法

    公开(公告)号:US5504177A

    公开(公告)日:1996-04-02

    申请号:US397456

    申请日:1995-03-02

    CPC分类号: C08G64/186 C08G77/448

    摘要: Copolysiloxanecarbonates are prepared in the melt by the reaction of a diaryl carbonate such as diphenyl carbonate with a mixture of a dihydroxyaromatic compound and a carbonate-terminated polydiorganosiloxane, the latter typically prepared by reaction of a diaryl carbonate or aryl chloroformate with a hydroxyorgano-terminated polydiorganosiloxane. By this method, incorporation of silicone units in the copolysiloxanecarbonate is maximized.

    摘要翻译: 通过碳酸二芳基酯与二羟基芳族化合物和碳酸酯封端的聚二有机硅氧烷的混合物的反应在熔融物中制备共聚硅氧烷碳酸酯,后者通常通过碳酸二芳基酯或氯甲酸芳基酯与羟基有机基封端的聚二有机硅氧烷 。 通过这种方法,将聚硅氧烷碳酸酯中的硅氧烷单元的引入最大化。

    POLYCARBONATE-POLY(ALKYLENE OXIDE) COPOLYMER COMPOSITIONS AND ARTICLES FORMED THEREFROM
    10.
    发明申请
    POLYCARBONATE-POLY(ALKYLENE OXIDE) COPOLYMER COMPOSITIONS AND ARTICLES FORMED THEREFROM 有权
    聚碳酸酯 - 聚(亚烷基氧化物)共聚物组合物及其形成的制品

    公开(公告)号:US20080312373A1

    公开(公告)日:2008-12-18

    申请号:US11763927

    申请日:2007-06-15

    IPC分类号: C08G64/04 C08G63/02 C08G75/20

    摘要: Disclosed herein is a polycarbonate copolymer comprising A) a structure derived from a dihydroxy alkylene oxide compound selected from the group consisting of formula (1a) and formula (1b): H-(E-X)l—OH   (1a) H-(E-X-E)l-OH   (1b) wherein E and X are different and each and independently are selected from the group consisting of formula (2a) and formula (2b): —(OCH2CH2)m—   (2a) —(OCHRCH2)n—   (2b) wherein R is a C1-8 alkyl group; l, m, and n are integers greater than or equal to 1; and wherein the weight average molecular weight of the total amount of the structures corresponding to formula (2b) in the copolymer is between 100 and 2,000 g/mol; and B) a structure derived from a dihydroxy aromatic compound, wherein the weight percentages are based on the total weight of the structures of A) and B).

    摘要翻译: 本文公开了一种聚碳酸酯共聚物,其包含A)衍生自选自式(1a)和式(1b)的二羟基氧化烯化合物的结构:<?在线式描述=“在线配方”末端 =“lead”→H(EX)1-OH(1a)<?in-line-formula description =“In-line Formulas”end =“tail”?> <?in-line-formula description =“In 线型公式“end =”lead“?> H-(EXE)1-OH(1b)<?in-line-formula description =”In-line Formulas“end =”tail“?>其中E和X不同 并且各自独立地选自式(2a)和式(2b):<?in-line-formula description =“In-line formula”end =“lead”→>(OCH 2 CH 2)m-( 2a)<?in-line-formula description =“In-line Formulas”end =“tail”?> <?in-line-formula description =“In-line formula”end =“lead”?> - (OCHRCH2) n-(2b)<?in-line-formula description =“In-line Formulas”end =“tail”?>其中R是C1-8烷基; l,m和n是大于或等于1的整数; 并且其中共聚物中对应于式(2b)的结构的总量的重均分子量为100至2,000g / mol; 和B)衍生自二羟基芳族化合物的结构,其中所述重量百分比基于A)和B)的结构的总重量。