Rubber powders
    51.
    发明授权
    Rubber powders 失效
    橡胶粉

    公开(公告)号:US4460749A

    公开(公告)日:1984-07-17

    申请号:US336915

    申请日:1982-01-04

    CPC分类号: C08F291/02

    摘要: Free-flowing rubber powders containing particles of a diene, acrylate or EPDM rubber having an average diameter of from 0.01 to 10 mm which contain, polymerized thereon, a 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, and a process for their production, wherein a latex of a diene, acrylate or an EPDM rubber having a glass transition temperature of below 0.degree. C. is completely broken with the formation of an aqueous suspension of the rubber, from 2 to 20% by weight, based on the rubber, of one or more vinyl monomers which form polymers having glass transition temperatures of above 25.degree. C. are then introduced into the suspension and the monomer(s) is/are polymerized, optionally after adding radical-forming catalysts.

    摘要翻译: 自由流动的橡胶粉末,其含有平均直径为0.01至10mm的二烯,丙烯酸酯或EPDM橡胶的颗粒,其含有聚合物或聚合物的一种或多种乙烯基单体的共聚物的壳体,其量为2 至20重量%,以及其制备方法,其中玻璃化转变温度低于0℃的二烯,丙烯酸酯或EPDM橡胶的胶乳完全破碎,形成水溶液 然后将悬浮液中的橡胶以2至20重量%的摩尔数计,基于橡胶,形成玻璃化转变温度高于25℃的聚合物的一种或多种乙烯基单体引入悬浮液中,单体为 任选地在加入自由基形成催化剂之后进行聚合。

    Notched impact resistant vinyl chloride polymers
    52.
    发明授权
    Notched impact resistant vinyl chloride polymers 失效
    缺口耐冲击氯乙烯聚合物

    公开(公告)号:US4376843A

    公开(公告)日:1983-03-15

    申请号:US270802

    申请日:1981-06-05

    摘要: The invention relates to notched impact resistant thermoplastic moulding compositions obtained from1. 1 to 99% by weight, preferably 10 to 95% by weight, especially 70 to 98% by weight, of a thermoplastic vinyl chloride polymer, and2. 99 to 1% by weight, preferably 90 to 5% by weight, especially 2 to 30% by weight, or a particulate graft copolymer consisting of a nucleus (a) of a highly crosslinked diene rubber, a first covering (b) of a crosslinked acrylate rubber, and a second covering (c) of a polymer or copolymer of resin-forming monomers, viz. Styrene, .alpha.-methylstyrene, acrylonitrile, methacrylonitrile, acrylic acid esters and methacrylic acid esters.

    摘要翻译: 本发明涉及由1.1至99重量%,优选10至95重量%,特别是70至98重量%的热塑性氯乙烯聚合物和2.99至1重量份的缺口耐冲击热塑性模塑组合物 重量比,优选为90〜5重量%,特别优选为2〜30重量%,或由高交联二烯橡胶的核(a),交联丙烯酸酯橡胶的第一覆盖物(b) ,以及树脂形成单体的聚合物或共聚物的第二覆盖物(c),即 苯乙烯,α-甲基苯乙烯,丙烯腈,甲基丙烯腈,丙烯酸酯和甲基丙烯酸酯。

    Rubber dispersions
    53.
    发明授权
    Rubber dispersions 失效
    橡胶分散体

    公开(公告)号:US4360620A

    公开(公告)日:1982-11-23

    申请号:US283930

    申请日:1981-07-17

    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 3,000 nm which contain: A--as rubber, from 1 to 20% by weight, based on the total dispersion, of a crosslinked diene rubber or a crosslinked, rubber-like acrylate polymer; B--from 0 to 15% 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 45% by weight, based on the total dispersion, of a mixture of from 95 to 60% by weight of a liquid aliphatic hydrocarbon having up to 20 carbon atoms; or C.sub.6 -C.sub.12 aromatic hydrocarbon or a halogen derivative thereof and from 5 to 40% by weight of a C.sub.1 -C.sub.12 alkanol, a ketone containing up to 8 carbon atoms, a formamide or a nitrile containing up to 6 carbon atoms, and a process for their manufacture.

    摘要翻译: 稳定的,自由流动的分散体在平均直径为100至3000nm的离散颗粒形式的橡胶的有机液体中,其含有:基于总分散体的1至20重量%的A-橡胶, 交联二烯橡胶或交联橡胶状丙烯酸酯聚合物; B为0至15重量%,基于总分散体积为油包水乳液形式的水; 作为连续有机相的99至45重量%的基于总分散体的95至60重量%的具有至多20个碳原子的液体脂族烃的混合物; 或C 6 -C 12芳族烃或其卤素衍生物和5至40重量%的C 1 -C 12链烷醇,含有至多8个碳原子的酮,甲酰胺或含有至多6个碳原子的腈,以及方法 为他们的制造。

    Trialkylsilyloxy-1,1-diphenyl ethylenes and polymers produced therewith
    58.
    发明授权
    Trialkylsilyloxy-1,1-diphenyl ethylenes and polymers produced therewith 失效
    三烷基甲硅烷氧基-1,1-二苯基乙烯和由其制备的聚合物

    公开(公告)号:US5153291A

    公开(公告)日:1992-10-06

    申请号:US492843

    申请日:1990-03-13

    摘要: Trialkylsilyloxy-1,1-diphenyl ethylenes corresponding to general formula I, new polymers produced therewith terminated by aryl trialkylsilyl ether groups or by phenolic hydroxyl groups and a process for the production of these polymers by anionic polymerization ##STR1## in which R.sup.1, R.sup.2 .dbd.H, C.sub.1 -C.sub.4 alkyl, OCH.sub.3,R.sup.3 .dbd.H, C.sub.1 -C.sub.4 alkyl, O--C.sub.1 -C.sub.4 alkyl,R.sup.4 .dbd.H, C.sub.1 -C.sub.4 alkyl,R.sup.5 .dbd.C.sub.1 -C.sub.4 alkyl,R.sup.6 .dbd.H, C.sub.1 -C.sub.4 alkyl.

    摘要翻译: 对应于通式I的三烷基甲硅烷氧基-1,1-二苯基乙烯,通过芳基三烷基甲硅烷基醚基团或酚羟基封端的新聚合物和通过阴离子聚合制备这些聚合物的方法(I),其中R 1 ,R2 = H,C1-C4烷基,OCH3,R3 = H,C1-C4烷基,O-C1-C4烷基,R4 = H,C1-C4烷基,R5 = C1-C4烷基,R6 = H,C1- C4烷基。