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    • 9. 发明授权
    • Polymer mixture and its use as a modifier for polyvinyl chloride
    • 聚合物混合物及其用作聚氯乙烯的改性剂
    • US4902744A
    • 1990-02-20
    • US275925
    • 1988-11-25
    • Christian LindnerHans-Eberhard BraeseKarl-Erwin Piejko
    • Christian LindnerHans-Eberhard BraeseKarl-Erwin Piejko
    • C08L27/00C08L9/02C08L21/00C08L27/06C08L33/04C08L33/08C08L51/00C08L51/04C08L55/00C08L55/02
    • C08L33/08C08L27/06C08L51/04C08L55/02C08L2205/02
    • A polymer mixture of(a) 45 to 50 parts by weight of a graft product of a mixture of 25 to 40 parts by weight acrylonitrile and 75 to 60 parts by weight styrene, .alpha.-methylstyrene, alkylmethacrylate or mixtures thereof on a particulate, highly crosslinked diene rubber having a rubber content of 20 to 40% by weight,(b) 45 to 10 parts by weight of a graft product of a mixture of 20 to 35 parts by weight acrylonitrile and 80 to 65 parts by weight styrene or .alpha.-methylstyrene on a particulate, highly crosslinked diene rubber having a rubber content of 50 to 75% by weight, the graft yield being greater than 60% by weight,(c) 10 to 50 parts by weight of a particulate, partially crosslinked, rubber-like copolymer of a C.sub.2 -C.sub.8 alkylacrylate and/or butadiene containing up to 40% by weight (based on copolymer) acrylonitrile which has an average particle diameter (d.sub.50) of from 0.1 to 0.3 .mu.m and a gel content of 40 to 99% by weight and(d) optionally up to 5 parts by weight of a high molecular weight, uncrosslinked copolymer of styrene or methylmethacrylate and up to 40% by weight acrylonitrile having an intrinsic viscosity [.eta.] (in dimethylformamide at 20.degree. C. of >4 dl/g,a process for its production and its use as an additive in polyvinyl chloride molding compositions.
    • (a)45至50重量份的25至40重量份丙烯腈和75至60重量份苯乙烯,α-甲基苯乙烯,甲基丙烯酸烷基酯或其混合物的混合物的接枝产物在颗粒状高度 橡胶含量为20〜40重量%的交联二烯橡胶,(b)45〜10重量份的20〜35重量份丙烯腈和80〜65重量份苯乙烯或α-烯烃的混合物的接枝产物, 甲基苯乙烯在橡胶含量为50〜75重量%,接枝收率大于60重量%的颗粒状,高度交联的二烯橡胶上,(c)10〜50重量份的颗粒状,部分交联的橡胶 - 平均粒径(d50)为0.1-0.3μm,凝胶含量为40-99%的含有至多40重量%(基于共聚物)丙烯腈的C2-C8烷基丙烯酸酯和/或丁二烯的共聚物, (d)任选地至多5重量份的高分子量 苯乙烯或甲基丙烯酸甲酯的未交联共聚物和高达40重量%特性粘度η的丙烯腈(在20℃的二甲基甲酰胺中为> 4dl / g,其制备方法及其用作添加剂的方法) 在聚氯乙烯模塑组合物中。