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:
May. 29, 2018
Filed:
Jun. 26, 2015
Zeon Corporation, Tokyo, JP;
Takuro Sakurai, Tokyo, JP;
Takashi Iizuka, Tokyo, JP;
ZEON CORPORATION, Tokyo, JP;
Abstract
Production of a conjugated diene rubber includes polymerizing isoprene or a monomer mixture containing isoprene and an aromatic vinyl monomer in an inert solvent by using a polymerization initiator so as to form a polymer block (A) having an active end, mixing the polymer block (A) having an active end and 1,3-butadiene or a monomer mixture containing 1,3-butadiene and an aromatic vinyl monomer to continue a polymerization reaction so as to obtain a conjugated diene polymer chain having an active end and containing a polymer block (A) and a polymer block (B), and reacting a compound represented by the following general formula (1) with the active end of the conjugated diene polymer chain having an active end: