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:
Apr. 16, 2019
Filed:
Jan. 22, 2013
Sumitomo Rubber Industries, Ltd., Kobe-shi, JP;
Kensuke Washizu, Kobe, JP;
SUMITOMO RUBBER INDUSTRIES, LTD., Kobe-shi, JP;
Abstract
There is provided a process for preparing a branched conjugated diene polymer by copolymerizing 1 to 100% by weight of a branched conjugated diene compound (1) monomer: wherein Ris an aliphatic hydrocarbon having 6 to 11 carbon atoms, with 99 to 0% by weight of a conjugated diene compound (2) monomer: wherein Rand Rare the same or different and each is a hydrogen atom, or the like, and/or 99 to 0% by weight of a vinyl compound (3) monomer: wherein Ris an aliphatic hydrocarbon group having 6 to 10 carbon atoms, or the like,wherein the process comprises a step of polymerizing by adding a monomer solution successively into a catalyst solution. The branched conjugated diene polymer is useful as a rubber component for a tire for improving processability.