The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 11, 2013
Filed:
May. 29, 2008
Nobuhide Ishihara, Chiba, JP;
Zhaomin Hou, Tokyo, JP;
Nobuhide Ishihara, Chiba, JP;
Zhaomin Hou, Tokyo, JP;
Idemitsu Kosan Co., Ltd., Tokyo, JP;
Riken, Wako-shi, JP;
Abstract
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.