公开(公告)号：US3994991A

公开(公告)日：1976-11-30

申请号：US607823

申请日：1976-08-25

申请人： Shoji Okami ,  Shigeki Yasunaga ,  Yoshihiko Hashimoto ,  Teizo Saito

发明人： Shoji Okami ,  Shigeki Yasunaga ,  Yoshihiko Hashimoto ,  Teizo Saito

IPC分类号： C08L27/06 ,  C08L51/00 ,  C08L51/04

CPC分类号： C08L27/06 ,  C08L51/003

摘要： A thermoplastic resin composition of vinyl chloride polymer improved in impact strength and weather resistance, which comprises (1) 30 to 97 parts by weight of at least one of vinyl chloride polymers having not less than 70% by weight of vinyl chloride units and (2) 70 to 3 parts by weight of at least one of graft copolymers comprising (2-1) a backbone polymer and (2-2) monomers grafted in two stages thereon in a proportion of 20 : 80 to 80 : 20 by weight, the backbone polymer comprising (2-1-1) units of at least one of alkyl acrylates, of which not more than 20% by weight may be substituted with units of at least one of monovinylic monomers copolymerizable therewith, and (2-1-2) units of at least one of cross-linkable monomers in an amount of 0.01 to 10% by weight of the alkyl acrylates and, when used, the monovinylic monomers and the graft monomers comprising (2-2-1) 30 to 100% by weight of at least one of alkyl methacrylates, 0 to 70% by weight of at least one of aromatic vinyl compounds, 0 to 50% by weight of at least one of vinylic cyanides and 0 to 30% by weight of at least one of other monomers copolymerizable therewith based on the total weight of these monomers as those grafted at the first stage and (2-2-2) 85 to 100% by weight of at least one of aromatic vinyl compounds, alkyl acrylates and vinyl esters and 0 to 15% by weight of at least one of other monomers copolymerizable therewith based on the total weight of these monomers as those grafted at the second stage in a proportion of 95 : 5 to 50 : 50 by weight.

摘要翻译： 一种改进了耐冲击性和耐候性的氯乙烯聚合物的热塑性树脂组合物，其包含（1）30至97重量份的至少一种不少于70重量％的氯乙烯单元的氯乙烯聚合物和（2 ）70至3重量份的至少一种接枝共聚物，其包含（2-1）主链聚合物和（2-2）以其重量比为20:80至80:20的比例以两步接枝的单体， 包含（2-1-1）单元的主链聚合物，其中至少一种丙烯酸烷基酯，其不超过20重量％可以被可与其共聚的单乙烯基单体中的至少一种的单元取代;和（2-1-2） 的至少一种可交联单体的量为0.01-10重量％的丙烯酸烷基酯，并且当使用时，单乙烯基单体和接枝单体包含（2-2-1）30至100％ 至少一种甲基丙烯酸烷基酯的重量，0至70重量％的至少一种芳族乙烯基化合物 0至50重量％的至少一种乙烯基氰化物和0至30重量％的至少一种可与其共聚的其它单体，基于这些单体的总重量，如在第一阶段接枝的那些，和（2- 2-2）85至100重量％的芳族乙烯基化合物，丙烯酸烷基酯和乙烯基酯中的至少一种和0至15重量％的可与其共聚的至少一种其它单体，基于这些单体的总重量，作为那些 在第二阶段以95:5至50:50的比例接枝。