The present invention relates to such a copolymer comprising an olefin and an aromatic vinyl compound that has a syndiotactic structure, high block property and a wide molecular weight distribution. Specifically, it relates to a copolymer comprising an olefin and an aromatic vinyl compound, in which a content of the aromatic vinyl compound is from 1 to 99% by mol; a molecular distribution is 1.7 or more; a signal based on an (olefin-aromatic vinyl compound-olefin) linkage as a node of the copolymer, a signal based on an (aromatic vinyl compound-aromatic vinyl compound-olefin) linkage, a signal based on an (aromatic vinyl compound-aromatic vinyl compound-aromatic vinyl compound) linkage as a block linkage of the aromatic vinyl compound, and a signal based on an (olefin-olefin-olefin) linkage as a block linkage of the olefin are present; an index showing block property of the aromatic vinyl compound component is from 30 to 100%; and a stereoregularity of a repeating unit chain constituted by the aromatic vinyl compound is 80% by mol or more, a method for producing the same, a resin composition, and a stretched product.
本发明涉及一种共聚物,包括具有顺反异构结构、高块状性和宽分子量分布的烯烃和芳香族
乙烯化合物。具体而言,本发明涉及一种共聚物,包括烯烃和芳香族
乙烯化合物,其中芳香族
乙烯化合物的含量为1-99摩尔%;分子分布为1.7或更高;基于(烯烃-芳香族
乙烯化合物-烯烃)连接的信号作为共聚物的节点,基于(芳香族
乙烯化合物-芳香族
乙烯化合物-烯烃)连接的信号,基于(芳香族
乙烯化合物-芳香族
乙烯化合物-芳香族
乙烯化合物)连接作为芳香族
乙烯化合物的块状连接,以及基于(烯烃-烯烃-烯烃)连接作为烯烃的块状连接的信号均存在;显示芳香族
乙烯化合物组分块状性的指标为30-100%;由芳香族
乙烯化合物构成的重复单元链的立体规整性为80摩尔%或更高;以及一种生产该共聚物的方法、
树脂组合物和拉伸产品。