公开(公告)号：US5180780A

公开(公告)日：1993-01-19

申请号：US877375

申请日：1992-04-29

申请人： Shinichi Nakamura ,  Yutaka Tubokura ,  Eiichi Terada

发明人： Shinichi Nakamura ,  Yutaka Tubokura ,  Eiichi Terada

IPC分类号： C08F287/00 ,  C08L25/08 ,  C08L25/12 ,  C08L53/02

CPC分类号： C08L25/08 ,  C08F287/00 ,  C08L25/12 ,  C08L53/02

摘要： The rubber-modified styrene-based copolymeric resin of the invention comprises a matrix phase of a copolymer of styrene and acrylonitrile and a dispersed phase of particles of an S-B type block-copolymeric rubber of styrene and butadiene as prepared by the bulk-suspension polymerization method or continuous bulk polymerization of the monomers in the presence of the rubber. The rubber-modified styrene-based copolymeric resin is imparted with excellent rigidity, impact strength and appearance, in particular, in welded portions when it is prepared by adequately selecting several parameters including the weight proportion of the moieties derived from styrene and acrylonitrile in the matrix phase and content of styrene, solution viscosity, content of 1,2-unsaturated linkages, particle size and distribution thereof in the rubber constituting the dispersed phase.

摘要翻译： 本发明的橡胶改性苯乙烯基共聚树脂包括苯乙烯和丙烯腈的共聚物的基体相和通过本体悬浮聚合法制备的苯乙烯和丁二烯的SB型嵌段共聚橡胶的分散相 或在橡胶存在下连续本体聚合单体。 橡胶改性苯乙烯基共聚树脂具有优异的刚性，冲击强度和外观，特别是在焊接部分中，通过适当地选择几个参数制备，包括在基质中衍生自苯乙烯和丙烯腈的部分的重量比例 苯乙烯的相和含量，溶液粘度，1,2-不饱和键的含量，粒径和分布在构成分散相的橡胶中。