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    • 48. 发明授权
    • Foamable polyvinyl halogenated resin mass, use of polymerizates thereof
as processing aids and objects formed therefrom
    • 可发泡聚乙烯基卤化树脂物质,其聚合物用作加工助剂和由其形成的物体
    • US6043293A
    • 2000-03-28
    • US174874
    • 1998-10-19
    • Pavel BelikGeorg SchneiderKlaus DornStefan ForsterBernd Frischkemuth
    • Pavel BelikGeorg SchneiderKlaus DornStefan ForsterBernd Frischkemuth
    • C08J9/04C08F2/22C08J9/00C08L27/00C08L27/06C08L33/12
    • C08J9/0061C08L27/06C08J2327/02C08J2433/00C08L33/12
    • There are provided foamable, foamable polyvinyl halide resin masses containing: A) 1 to 25 parts relative to 100 parts of polyvinyl halide, of a polymerizate obtainable through the emulsion polymerization of i) up to 20 to not more than 75 parts of methylmethacrylate, ii) 25 to 80 parts of one or more C.sub.2 -C.sub.18 alkylmethacrylates, iii) 0 to 5 parts of one or more vinyl unsaturated monomers copolymerizable with (i) and/or (ii, wherein the components (i)-(iii) together yield 100 parts and are polymerized with up to a further 100 parts of usual additives for emulsion polymerization, wherein the emulsion polymerizate is single stepped and has a viscosity number of >700 cm.sup.3 /g and wherein copolymers are excluded which contain iv) MMA per se, or less than 20 or more than 75 parts of MMA together with either v) one or more acrylic acid esters, and/or vi) ethyl methacrylate, n-butyl-methacrylate, or ethylhexyl methacrylate. The resin mass further includes: B) 0.1-10 parts based on 100 parts of the polyvinyl halide of one or more foaming materials, C) 0-100 parts based on 100 parts polyvinyl halide of the usual additives. This polyvinyl halide resin mass, after foaming, yields a resin mass which, as well as of good surface properties, has a foam density of
    • 提供了可发泡的,可发泡的聚卤乙烯树脂块,其包含:A)相对于100份聚卤乙烯为1至25份,通过i)至多20至不超过75份甲基丙烯酸甲酯可获得的聚合物,ii )25至80份一种或多种C 2 -C 18烷基甲基丙烯酸酯,iii)0至5份可与(i)和/或(ii)共聚的一种或多种乙烯基不饱和单体,其中组分(i) - (iii)共同产生 100份,再与100份常用的乳液聚合添加剂进行聚合,其中乳液聚合物为单步级,粘度为> 700cm3 / g,其中排除含有iv)MMA本身的共聚物, 或小于20或大于75份的MMA以及v)一种或多种丙烯酸酯,和/或vi)甲基丙烯酸乙酯,正丁基 - 甲基丙烯酸酯或甲基丙烯酸乙基己基酯。 树脂质量还包括:B)基于100份一种或多种发泡材料的聚卤乙烯的0.1-10份,C)基于100份常规添加剂的聚卤乙烯的0-100份。 该聚卤乙烯树脂组合物在发泡后产生具有良好表面性质的泡沫密度<0.7g / cm 3的树脂组合物。