POLY(CARBONATE-CO-UREA) COPOLYMERS AND MELT TRANSESTERIFICATION METHOD OF PREPARING THESE COPOLYMERS
    2.
    发明申请
    POLY(CARBONATE-CO-UREA) COPOLYMERS AND MELT TRANSESTERIFICATION METHOD OF PREPARING THESE COPOLYMERS 失效
    聚(碳酸酯 - 共聚物)共聚物和制备这些共聚物的熔融纺丝方法

    公开(公告)号:US20080275209A1

    公开(公告)日:2008-11-06

    申请号:US11743761

    申请日:2007-05-03

    CPC分类号: C08G64/12 C08G63/64 C08G71/02

    摘要: Disclosed herein is a process to prepare a poly(carbonate-co-urea) copolymer comprising reacting in the melt: (a) a dihydroxy reaction component comprising a dihydroxy compound, (b) a diaryl carbonate reaction component comprising a diaryl carbonate, (c) a urea reaction component comprising a urea compound in the presence of (d) a transesterification catalyst during at least part of the reaction and removing a phenolic byproduct to produce a poly(carbonate-co-urea) copolymer, wherein the urea and dihydroxy compounds are reacted in a molar ratio: (total moles of urea compound)/((total moles of urea compound)+(total moles of dihydroxy compound)) of less than or equal to 0.5.

    摘要翻译: 本文公开了一种制备聚(碳酸酯 - 共 - 尿素)共聚物的方法,其包括在熔体中反应:(a)包含二羟基化合物的二羟基反应组分,(b)包含碳酸二芳基酯的碳酸二芳酯反应组分,(c )在至少部分反应期间(d)酯交换催化剂存在下包含脲化合物的脲反应组分,并除去酚类副产物以产生聚(碳酸酯 - 共 - 尿素)共聚物,其中脲和二羟基化合物 以摩尔比(尿素化合物的总摩尔数)/((脲化合物的总摩尔数)+(二羟基化合物的总摩尔数))小于或等于0.5。

    Poly(carbonate-co-urea) copolymers and melt transesterification method of preparing these copolymers
    4.
    发明授权
    Poly(carbonate-co-urea) copolymers and melt transesterification method of preparing these copolymers 失效
    聚(碳酸酯 - 共 - 尿素)共聚物和制备这些共聚物的熔融酯交换法

    公开(公告)号:US07666977B2

    公开(公告)日:2010-02-23

    申请号:US11743761

    申请日:2007-05-03

    IPC分类号: C08G73/00 C08G64/00

    CPC分类号: C08G64/12 C08G63/64 C08G71/02

    摘要: Disclosed herein is a process to prepare a poly(carbonate-co-urea) copolymer comprising reacting in the melt: (a) a dihydroxy reaction component comprising a dihydroxy compound, (b) a diaryl carbonate reaction component comprising a diaryl carbonate, (c) a urea reaction component comprising a urea compound in the presence of (d) a transesterification catalyst during at least part of the reaction and removing a phenolic byproduct to produce a poly(carbonate-co-urea) copolymer, wherein the urea and dihydroxy compounds are reacted in a molar ratio: (total moles of urea compound)/((total moles of urea compound)+(total moles of dihydroxy compound)) of less than or equal to 0.5.

    摘要翻译: 本文公开了一种制备聚(碳酸酯 - 共 - 尿素)共聚物的方法,其包括在熔体中反应:(a)包含二羟基化合物的二羟基反应组分,(b)包含碳酸二芳基酯的碳酸二芳酯反应组分,(c )在至少部分反应期间(d)酯交换催化剂存在下包含脲化合物的脲反应组分,并除去酚类副产物以产生聚(碳酸酯 - 共 - 尿素)共聚物,其中脲和二羟基化合物 以摩尔比(尿素化合物的总摩尔数)/((脲化合物的总摩尔数)+(二羟基化合物的总摩尔数))小于或等于0.5。