Rubber powders
    71.
    发明授权
    Rubber powders 失效
    橡胶粉

    公开(公告)号:US4456734A

    公开(公告)日:1984-06-26

    申请号:US337064

    申请日:1982-01-04

    CPC分类号: C08F285/00

    摘要: Free-flowing rubber powders of particles having an average diameter of from 0.01 to 10 mm which contain a grafted-on shell of the polymer or copolymer of one or more vinyl monomers in a quantity of from 2 to 20% by weight, based on the rubber, which rubber is a latex polymer of which the latex particles consist essentially of from 99 to 80% by weight of acrylate rubber having glass transition temperatures below 0.degree. C. and from 1 to 20% by weight of polymer having glass transition temperatures above 0.degree. C. grafted thereon, and a process for their production, wherein the latex of the rubber is completely broken to form an aqueous suspension of the rubber, after which from 2 to 20% by weight, based on the rubber, of one or more vinyl monomers which form polymers having glass transition temperatures above 25.degree. C. are introduced into the suspension and the monomer(s) is/are polymerized, optionally after the addition of a radical-forming catalyst.

    摘要翻译: 平均直径为0.01至10mm的颗粒的自由流动的橡胶粉末,其含有2-20重量%的2-20重量%的聚合物或共聚物的接枝壳,基于 橡胶,其是胶乳聚合物,其中胶乳颗粒基本上由99至80重量%的玻璃化转变温度低于0℃的丙烯酸酯橡胶和1至20重量%的具有玻璃化转变温度的聚合物组成 接枝在其上的0℃及其制备方法,其中橡胶的胶乳被完全破碎以形成橡胶的水性悬浮液,之后,基于橡胶的2至20重量%的橡胶为1或 将形成玻璃化转变温度高于25℃的聚合物的更多的乙烯基单体引入悬浮液中,任选地在加入自由基形成催化剂之后将单体聚合。

    High-notched-impact core-shell polymers having improved weather
resistance
    73.
    发明授权
    High-notched-impact core-shell polymers having improved weather resistance 失效
    具有改进的耐候性的高切口冲击的核 - 壳聚合物

    公开(公告)号:US4393172A

    公开(公告)日:1983-07-12

    申请号:US309569

    申请日:1981-10-08

    CPC分类号: C08F279/02 Y10S525/902

    摘要: A particulate graft polymer comprising (a) a core formed by a crosslinked homopolymer of a conjugated diene or a copolymer thereof with up to 10% by weight of styrene or acrylonitrile; (b) a first shell formed by a crosslinked homopolymer of an acrylic acid alkyl ester or a copolymer thereof with up to 30% by weight of vinyl monomers; (c) a second shell formed by a polymer of resin-forming monomers, a process for manufacturing these graft polymers by means of a multi-stage emulsion polymerization, and their application as molding compositions, optionally together with rigid thermoplastic resins.

    摘要翻译: 一种颗粒状接枝聚合物,其包含(a)由共轭二烯的交联均聚物或其共聚物与至多10重量%的苯乙烯或丙烯腈的交联均聚物形成的芯; (b)由丙烯酸烷基酯的交联均聚物或其共聚物与至多30重量%的乙烯基单体形成的第一壳; (c)由树脂形成单体的聚合物形成的第二壳,通过多阶段乳液聚合制造这些接枝聚合物的方法,以及它们作为模塑组合物,任选地与刚性热塑性树脂一起使用。

    Polymer alloys
    79.
    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%。