Rubber dispersions II
    114.
    发明授权
    Rubber dispersions II 失效
    橡胶分散体II

    公开(公告)号:US4454305A

    公开(公告)日:1984-06-12

    申请号:US399712

    申请日:1982-07-19

    摘要: Stable, free-flowing dispersions in organic liquids of rubbers in the form of discrete particles having an average diameter of from 100 to 3000 nm which contains:A--as rubber, from 1 to 20% by weight, based on the total dispersion, of a crosslinked diene rubber; B--from 0 to 20% by weight, based on the total dispersion, of water in the form of a water-in-oil emulsion; C--as the continuous organic phase, from 99 to 66% by weight, based on the total dispersion, of (a) C.sub.1 -C.sub.10 alkyl acrylates or alkyl methacrylates, methyl methacrylate, ethyl acrylate or n-hexyl acrylate; or (b) a mixture of from 85 to 50% by weight of styrene or .alpha.-methyl styrene and from 15 to 50% by weight of acrylonitrile, methacrylonitrile or C.sub.1 -C.sub.6 alkyl acrylates or alkyl methacrylates, methyl methacrylate, ethyl acrylate, n-hexyl acrylate; or (c) a mixture of from 85 to 50% by weight of a C.sub.1 -C.sub.10 alkyl acrylate or alkyl methacrylate and from 15 to 50% by weight of acrylonitrile, methacrylonitrile or styrene; up to 60% by weight of a liquid hydrocarbon can be added to and mixed with (a), (b) and (c),and a process for producing said dispersions.

    摘要翻译: 平均直径为100至3000nm的离散颗粒形式的橡胶有机液体中的稳定的自由流动的分散体,其包含:A-橡胶,基于总分散体积的1至20重量% 交联二烯橡胶; B为0至20重量%,基于总分散体积为油包水乳液形式的水; (a)丙烯酸C1-C10烷基酯或甲基丙烯酸烷基酯,甲基丙烯酸甲酯,丙烯酸乙酯或丙烯酸正己酯的总分散体的99至66重量% 或(b)85至50重量%的苯乙烯或α-甲基苯乙烯和15至50重量%的丙烯腈,甲基丙烯腈或丙烯酸C 1 -C 6烷基酯或甲基丙烯酸烷基酯的混合物,甲基丙烯酸甲酯,丙烯酸乙酯, 丙烯酸己酯 或(c)85至50重量%的丙烯酸C1-C10烷基酯或甲基丙烯酸烷基酯和15至50重量%的丙烯腈,甲基丙烯腈或苯乙烯的混合物; 可以向(a),(b)和(c)中加入高达60重量%的液体烃,并与(a),(b)和(c)混合,以及制备所述分散体的方法。

    Process for the preparation of carbonic acid esters of polyester-polyols
    115.
    发明授权
    Process for the preparation of carbonic acid esters of polyester-polyols 失效
    聚酯多元醇碳酸酯的制备方法

    公开(公告)号:US4191705A

    公开(公告)日:1980-03-04

    申请号:US845174

    申请日:1977-10-25

    CPC分类号: C08G63/64 C08G63/916

    摘要: The present invention relates to a process for the preparation of carbonic acid esters of polyester-polyols by transesterifying the polyols with carbonic acid aryl esters at elevated temperatures under vacuum in the presence of a catalyst. The reaction conditions are controlled to avoid the formation of by-products and the chain extension of the polyester-polyols. The present invention is also concerned with the polyester carbonic acid esters so formed, their use in producing polycarbonate block copolymers and the copolymers so produced. The copolymers may be produced by transesterifying the polyester carbonic acid esters with bisphenols and subjecting the bis-hydroxyaryl carbonates so formed to normal polycarbonate synthesis such as interfacial or melt polycondensation.

    摘要翻译: 本发明涉及一种通过在催化剂存在下在真空下在升高的温度下将多元醇与碳酸芳酯酯交换而制备聚酯多元醇的碳酸酯的方法。 控制反应条件以避免副产物的形成和聚酯多元醇的链延长。 本发明还涉及如此形成的聚酯碳酸酯,它们在生产聚碳酸酯嵌段共聚物中的用途以及如此制备的共聚物。 共聚物可以通过将聚酯碳酸酯与双酚酯交换并使如此形成的双羟基芳基碳酸酯进行正常的聚碳酸酯合成如界面或熔融缩聚来制备。

    Polymer alloys
    117.
    发明授权
    Polymer alloys 失效
    聚合物合金

    公开(公告)号:US5274032A

    公开(公告)日:1993-12-28

    申请号:US435058

    申请日:1989-11-13

    IPC分类号: C08L51/06 C08L51/04 C08L51/08

    CPC分类号: C08L51/04 C08L51/085

    摘要: Moulding compositions comprisingA) from 5 to 95% by weight of a graft product of a mixture of from 50 to 100 parts by weight of styrene, .alpha.-methylstyrene, vinyl toluene, methyl methacrylate or mixtures thereof and from 0 to 50 parts by weight of acrylonitrile on a particulate silicone rubber having an average particle diameter (d.sub.50) of from 0.10 to 0.50 .mu.m with a total rubber content of from 30 to 90% by weight andB) from 95 to 5% by weight of a graft product of a mixture of from 50 to 100 parts by weight of styrene, .alpha.-methylstyrene, vinyl toluene, methyl methacrylate or mixtures thereof and from 0 to 50 parts by weight of acrylonitrile on a particulate EPDM rubber having an average particle diameter (d.sub.50) of from 0.20 to 1.00 .mu.m with a total rubber content of from 10 to 50% by weight.

    摘要翻译: 包含A)5至95重量%的50至100重量份苯乙烯,α-甲基苯乙烯,乙烯基甲苯,甲基丙烯酸甲酯或其混合物的混合物的接枝产物和0至50重量份的成型组合物 丙烯腈在平均粒径(d50)为0.10〜0.50μm,总橡胶含量为30〜90重量%的粒状硅橡胶上的丙烯腈,B)95〜5重量%的 50至100重量份苯乙烯,α-甲基苯乙烯,乙烯基甲苯,甲基丙烯酸甲酯或其混合物和0至50重量份丙烯腈的混合物,其平均粒径(d50)为 0.20〜1.00μm,总橡胶含量为10〜50重量%。