Method for incorporating alkyl ester endgroups to improve the release properties of melt polycarbonate
    71.
    发明授权
    Method for incorporating alkyl ester endgroups to improve the release properties of melt polycarbonate 有权
    用于加入烷基酯端基以改善熔融聚碳酸酯的脱模性能的方法

    公开(公告)号:US07105626B2

    公开(公告)日:2006-09-12

    申请号:US10938337

    申请日:2004-09-10

    IPC分类号: C08G64/00

    CPC分类号: C08G64/42 C08G2650/04

    摘要: Alkyl ester end-capped polycarbonates have improved release properties and may be produced by a method comprising the step of combining a polycarbonate having free terminal OH groups with an end-capping reagent comprising a symmetrical activated carbonate and an alkyl ester, whereby the end-capping reagent reacts with at least some of the free hydroxyl end groups of the polycarbonate to produce an end-capped polycarbonate comprising optionally substituted aliphatic ester end groups.

    摘要翻译: 烷基酯封端的聚碳酸酯具有改进的脱模性能,并且可以通过包括以下步骤的方法制备:将具有游离的末端OH基团的聚碳酸酯与包含对称活性碳酸酯和烷基酯的封端剂组合的步骤,由此封端 试剂与聚碳酸酯的至少一些游离羟基端基反应以制备包含任选取代的脂族酯端基的封端聚碳酸酯。

    Dimensionally stable polycarbonate articles
    73.
    发明授权
    Dimensionally stable polycarbonate articles 失效
    尺寸稳定的聚碳酸酯制品

    公开(公告)号:US06552158B1

    公开(公告)日:2003-04-22

    申请号:US10064348

    申请日:2002-07-03

    IPC分类号: C08G6400

    CPC分类号: G11B7/2534 C08G64/06

    摘要: The disclosure relates to articles using polycarbonates produced by a melt transesterification polymerization method using bis(hydroxyaryl)cyclohexanes. Such polycarbonates have suitable glass transition temperatures and outstanding dimensional stabilities, thus making them particularly useful for making articles possessing high temperature stability, particularly for use in optical articles such as high density optical data storage and recordable media.

    摘要翻译: 本公开涉及使用通过使用双(羟基芳基)环己烷的熔融酯交换聚合方法制备的聚碳酸酯的制品。 这种聚碳酸酯具有合适的玻璃化转变温度和优异的尺寸稳定性,因此使其特别适用于具有高温稳定性的制品,特别适用于光学制品如高密度光学数据存储和可记录介质。

    Production of poly(carbonate-co-ester) copolymers
    74.
    发明授权
    Production of poly(carbonate-co-ester) copolymers 有权
    聚(碳酸酯 - 共 - 酯)共聚物的生产

    公开(公告)号:US06486294B1

    公开(公告)日:2002-11-26

    申请号:US09683807

    申请日:2002-02-19

    IPC分类号: C08G6400

    CPC分类号: C08G63/64

    摘要: A poly(carbonate-co-ester) block copolymer is synthesized using synthetic strategies that can be incorporated into conventional melt facilities that are commonly used in the production of polycarbonate polymers. The polycarbonate block of the poly(carbonate-co-ester) copolymer is derived from a polycarbonate reaction mixture comprising an aromatic dihydroxy compound and a carbonic acid diester, such as bisphenol A and diphenyl carbonate, respectively. The second block of the copolymer is derived from a polyester prepolymer, the polyester prepolymer comprising a diol, diacid or diester, and at least one monomer that is selected to advantageously incorporate desired properties into the poly(carbonate-co-ester) copolymer. The polyester prepolymer is introduced to the polycarbonate reaction mixture to form the poly(carbonate-co-ester) copolymer. Properties of the copolymer can be altered by varying numerous conditions of the reaction.

    摘要翻译: 使用可以结合到通常用于生产聚碳酸酯聚合物的常规熔融设备中的合成策略来合成聚(碳酸酯 - 共 - 酯)嵌段共聚物。 聚(碳酸酯 - 共 - 酯)共聚物的聚碳酸酯嵌段衍生自包含芳族二羟基化合物和碳酸二酯的聚碳酸酯反应混合物,例如双酚A和碳酸二苯酯。 共聚物的第二嵌段衍生自聚酯预聚物,聚酯预聚物包含二醇,二酸或二酯,以及至少一种选择以有利地将所需性质并入聚(碳酸酯 - 共酯)共聚物中的单体。 将聚酯预聚物引入聚碳酸酯反应混合物中以形成聚(碳酸酯 - 共 - 酯)共聚物。 通过改变多种反应条件可以改变共聚物的性质。

    BLENDS OF ISOSORBIDE-BASED COPOLYCARBONATE, METHOD OF MAKING, AND ARTICLES FORMED THEREFROM
    80.
    发明申请
    BLENDS OF ISOSORBIDE-BASED COPOLYCARBONATE, METHOD OF MAKING, AND ARTICLES FORMED THEREFROM 有权
    基于异构体的共聚碳酸酯的混合物,制备方法和形成的制品

    公开(公告)号:US20110160406A1

    公开(公告)日:2011-06-30

    申请号:US12893479

    申请日:2010-09-29

    IPC分类号: C08L69/00

    摘要: Disclosed herein is are thermoplastic compositions comprising a blend of a homopolycarbonate comprising units derived from an aromatic dihydroxy compound and a copolymer comprising isosorbide units and siloxane units. The copolymer comprising isosorbide units and siloxane units can further comprise non-isosorbide aliphatic units derived from a C14-44 aliphatic diacid, a C14-44 aliphatic diol or combination of these, aromatic units, aliphatic units derived from an oligomer having a weight average molecular weight of 900 to 4000 or a combination of some or all of the foregoing additional units.

    摘要翻译: 本文公开的是包含均匀聚碳酸酯的共混物的热塑性组合物,其包含衍生自芳族二羟基化合物的单元和包含异山梨醇单元和硅氧烷单元的共聚物。 包含异山梨醇单元和硅氧烷单元的共聚物还可以包含衍生自C14-44脂族二酸,C14-44脂族二醇或它们的组合的芳基单元,衍生自重均分子 重量为900至4000,或者部分或全部上述附加单元的组合。