Cellulose ester moulding materials with improved toughness
    10.
    发明授权
    Cellulose ester moulding materials with improved toughness 失效
    纤维素酯成型材料具有改善的韧性

    公开(公告)号:US4801632A

    公开(公告)日:1989-01-31

    申请号:US17878

    申请日:1987-02-24

    CPC分类号: C08L1/10

    摘要: Thermoplastic moulding materials consisting of(1) 70 to 99.9% by weight of a cellulose ester or cellulose mixed ester(2) 0.1 to 30% by weight of a rubber polymer built up in the form of blocks from recurring structural units (I) with molecular weights of 10,000 to 1,000,000--A--B-- IwhereinA denotes bifunctional polysiloxane segements of the formula--(R.sup.1)(R.sup.2)SiO--.sub.x IIin whichR.sup.1 and R.sup.2 =aryl (in particular phenyl) or alkyl (in particular methyl) andx is a number such that the molecular weight is .gtoreq.500, andB denotes bifunctional aliphatic polyester and/or aliphatic polyester segments with molecular weights of .gtoreq.800,and the glass transition temperatures of the polymeric blocks A and B are less than 20.degree. C., which contains additionally(3) 0 to 30% by weight based on the mixture of (1) and (2) of a plasticizer.

    摘要翻译: 由(1)70-99.9重量%的纤维素酯或纤维素混合酯(2)组成的热塑性成型材料0.1至30重量%的由循环结构单元(I)的嵌段形式构成的橡胶聚合物, 分子量为10,000至1,000,000 -ABI,其中A表示式 - (R1)(R2)SiO-xⅡ的双官能聚硅氧烷分层,其中R 1和R 2 =芳基(特别是苯基)或烷基(特别是甲基),x为 分子量大于等于500的数字,B表示分子量大于等于800的双官能脂族聚酯和/或脂族聚酯链段,聚合物嵌段A和B的玻璃化转变温度小于20 其含有(3)0至30重量%,基于增塑剂的(1)和(2)的混合物。