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:
Feb. 23, 2016
Filed:
Jul. 22, 2011
Shojiro Kaita, Oizumi-machi, JP;
Olivier Tardif, Wako, JP;
Hideki Kitano, Yoshikawa, JP;
BRIDGESTONE CORPORATION, Tokyo, JP;
Abstract
Disclosed is a method of manufacturing a copolymer of a conjugated diene compound and an olefin other than the conjugated diene compound, where a conjugated diene compound and an olefin other than the conjugated diene compound is copolymerized in the presence of a polymerization catalyst composition containing components: (A) a rare earth element compound or a reactant of the rare earth element compound and a Lewis base; and (B) at least one selected from a group consisting of an ionic compound (B-1) composed of a non-coordinating anion and a cation, an aluminoxane (B-2), and at least one kind of halogen compound (B-3) selected from among a Lewis acid, a complex compound of a metal halide and a Lewis base, and an organic compound containing active halogen (when containing at least one of (B-1) and (B-3), the polymerization catalyst composition further contains component (C): an organometallic compound).