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:
Oct. 26, 2010
Filed:
Nov. 13, 2008
Applicants:
Zengquan Qin, Copley, OH (US);
Jason T. Poulton, Akron, OH (US);
Michael W. Hayes, Canton, OH (US);
Inventors:
Assignee:
Bridgestone Corporation, , JP;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B01J 31/28 (2006.01); B01J 31/18 (2006.01); B01J 27/12 (2006.01); B01J 27/128 (2006.01);
U.S. Cl.
CPC ...
Abstract
A nickel-carbene polymerization catalyst system for preparing high cis polydienes is provided. The catalyst system comprises (a) a nickel N-heterocyclic carbene complex, (b) an organoaluminum compound, (c) a fluorine-containing compound, and (d) optionally, an alcohol. Also provided is a process for producing a polydiene comprising reacting a conjugated diene in the presence of a polymerization catalyst comprising (a) a nickel N-heterocyclic carbene complex, (b) an organoaluminum compound, (c) a fluorine-containing compound, and (d) optionally, an alcohol.