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发明授权
US06964996B1 Pentablock copolymer and manufacturing method of the same 失效
五嵌段共聚物及其制备方法相同

Pentablock copolymer and manufacturing method of the same
摘要：
The present invention relates to a ternary copolymer represented by the following formula (1) of the penta-block structure, wherein the molecular weight is 50, 000 to 400,000, pB is more than 70% of 1,4 structure, the content of pS is in range of 5% to 50%, and pB and pI are in a weight ratio of pB/pI≧1. pS-pI-pB-pI-pS  (1) Wherein, pS is vinyl aromatic polymer, pB is polybutadiene and pI is polyisoprene.The block copolymer in the present invention with the structure, in which polyisoprene block is inserted between vinyl aromatic polymer block and polybutadiene block, has high mechanical properties such as tensile strength. The manufacturing method of the ternary block copolymer with penta-block structure is also provided.
摘要（中）：

本发明涉及五嵌段结构的下式（1）表示的三元共聚物，其中分子量为50,000〜400,000，pB为1,4-结构的70％以上，pS的含量 在5％至50％的范围内，pB和pI的重量比为pB / pI> = 1。 <？in-line-formula description =“In-line Formulas”end =“lead”？> pS-pI-pB-pI-pS（1）<？in-line-formula description =“In-line Formulas”end =“尾”→其中pS为乙烯基芳族聚合物，pB为聚丁二烯，pI为聚异戊二烯。 具有其中聚异戊二烯嵌段插入乙烯基芳族聚合物嵌段和聚丁二烯嵌段之间的结构的嵌段共聚物具有高机械性能如拉伸强度。 还提供了具有五嵌段结构的三元嵌段共聚物的制备方法。

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