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:
Nov. 13, 2018
Filed:
Feb. 24, 2015
Bridgestone Corporation, Tokyo, JP;
Olivier Tardif, Tokyo, JP;
Shigeki Oishi, Hachioji, JP;
BRIDGESTONE CORPORATION, Chuo-ku, Tokyo, JP;
Abstract
A multiblock copolymer, obtainable by copolymerization of a conjugated diene compound and a non-conjugated olefin, wherein: a structure of the multiblock copolymer includes A-(B-A)and/or B-(A-B), wherein 'A' represents a block portion constituted of monomer units of a non-conjugated olefin, 'B' represents a block portion constituted of monomer units of a conjugated diene compound, and “x” represents an integer ≥1; content of the non-conjugated olefin portion is ≤30 mass %; and storage modulus G' at 130° C., measured by rubber process analysis using a rubber process analyzer, i.e. RPA, according to ASTM D6204, is ≥20 kPa. It is possible to obtain vulcanized rubber and thus a tire having high fracture resistance and high weather resistance from the multiblock copolymer and a rubber composition derived therefrom.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile