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:
Mar. 13, 1984
Filed:
Mar. 21, 1983
Hiroshi Furukawa, Kobe, JP;
Yuichi Saito, Nishinomiya, JP;
Akio Imai, Ichihara, JP;
Keisaku Yamamoto, Ichihara, JP;
Hiroyoshi Takao, Chiba, JP;
Nobuyuki Yoshida, Ichihara, JP;
Sumitomo Chemical Co., Ltd., Osaka, JP;
Abstract
A conjugated diene block polymer composed of blocks having a different microstructure from each other such that one block contains 20 to 60% by mole of 1,2- and/or 3,4-bonding, the other block contains 50 to 90% by mole of 1,2- and/or 3,4-bonding, the difference in the 1,2- and/or 3,4-bonding content between the both blocks is from 20 to 50% mole and the average content of 1,2- and/or 3,4-bonding in the polymer is from 50 to 85% by mole. The block polymer has a high wet skid resistance and a low dynamic heat generating property, and is very useful as a material for automobile tires.