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    • 9. 发明授权
    • Thermoplastic vinyl resin compositions, and method of manufacture
    • 热塑性乙烯基树脂组合物及其制造方法
    • US3670052A
    • 1972-06-13
    • US83730969
    • 1969-06-27
    • KANEGAFUCHI CHEMICAL IND
    • SAITO KAZUOTANAKA TAKESHISAITO ICHIRO
    • C08F279/02C08F285/00C08L27/06C08L51/04C08F19/08C08F41/12
    • C08L27/06C08F279/02C08F285/00C08L51/04Y10S525/942C08F2/16C08F2/18C08F212/04C08L2666/24C08L2666/04
    • Production of synthetic vinyl resins having pronounced resistance to color deterioration, while also manifesting high impact strength and transparency, utilizing a butadiene graft polymer formed by the sequential addition to a polymer or copolymer of butadiene of from 80 to 30 parts of monomers for each 100 parts of total resin content, said monomers consisting of from 5 to 80 percent vinyl aromatic compound, from 5 to 50 percent of methyl methacrylate, and from 5 to 60 percent of acrylonitrile, the process being characterized in that at least 80 percent of the butadiene particles at the start are less than 0.1 Mu in diameter and are dispersed in an aqueous emulsion which contains from 0.5 to 10.0 parts of a formaldehyde sulfoxylic salt, and catalytically effective amounts up to three parts of peroxide, for each 100 parts of resinous constituents used, said particle size being maintained at least until polymerization of the monomeric material has been effectively begun, said butadiene graft polymer being independently useful but also being capable of blending with a resin of the vinyl chloride type to produce a final resin of greatly enhanced properties.
    • 制造具有显着耐色劣性的合成乙烯基树脂,同时也表现出高冲击强度和透明度,使用通过顺序添加至丁二烯的聚合物或共聚物而形成的丁二烯接枝聚合物,其中每100份均为80至30份单体 的总树脂含量,所述单体由5至80%乙烯基芳族化合物,5至50%甲基丙烯酸甲酯和5至60%的丙烯腈组成,该方法的特征在于至少80%的丁二烯颗粒 开始时直径小于0.1μm,分散在含有0.5〜10.0份甲醛亚硫酸盐的水性乳液中,对于每100份所使用的树脂组分,催化有效量至多3份过氧化物, 所述的粒径保持至少直到单体材料的聚合已被有效地开始,所述丁二烯 接枝聚合物独立地有用,但也能够与氯乙烯类树脂共混以产生极大增强的性能的最终树脂。