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1. 发明授权

US4603155A Alkenyl aromatic compound-conjugated diene block copolymer and process for the production thereof 失效
标题翻译：烯基芳香族化合物 - 共轭二烯嵌段共聚物及其制造方法
公开(公告)号：US4603155A
公开(公告)日：1986-07-29
申请号：US586442
申请日：1984-03-05
申请人： Kunihiko Muramori , Kazuo Yamamoto , Noboru Oshima , Yoshito Yoshimura
发明人： Kunihiko Muramori , Kazuo Yamamoto , Noboru Oshima , Yoshito Yoshimura
IPC分类号： C08F297/04 , C08F293/00
CPC分类号： C08F297/04
摘要： An alkenyl aromatic compound-conjugated diene block copolymer having a combined alkenyl aromatic compound content of 25-95% by weight, characterized in that said copolymer is represented by the formula,A--B--Awherein A represents an alkenyl aromatic compound polymer block, the total amount of A's in both ends being 50-97% by weight of the total combined alkenyl aromatic compound content; B represents a conjugated diene-alkenyl aromatic compound copolymer block, said B portion having (a) 2-10 taper blocks where the amount of the alkenyl aromatic compound increases gradually and (b) a weight ratio of alkenyl aromatic compound/conjugated diene of 3-85/97-15; and the total amount of the chains that 1-4 alkenyl aromatic compound monomers are linked is 5-30% by weight of the total combined alkenyl aromatic compound content. Said copolymer is excellent in the balance of impact strength, tensile strength and elongation.
摘要翻译：烯基芳族化合物 - 共轭二烯嵌段共聚物，其具有25-95重量％的组合烯基芳族化合物含量，其特征在于所述共聚物由下式表示：ABA，其中A表示烯基芳族化合物聚合物嵌段， A两端的总链烯基芳族化合物含量为50-97重量％ B表示共轭二烯 - 烯基芳族化合物共聚物嵌段，所述B部分具有（a）2-10个渐缩嵌段，其中链烯基芳族化合物的量逐渐增加，（b）链烯基芳族化合物/共轭二烯的重量比为3 -85 / 97-15; 1-4链烯基芳族化合物单体连接的链的总量为总链烯基芳族化合物含量的5-30重量％。所述共聚物的冲击强度，拉伸强度和伸长率的平衡优异。

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