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. 24, 2012
Filed:
Apr. 06, 2009
Steven Luo, Copley, OH (US);
Mark W. Smale, Hudson, OH (US);
Kevin Mccauley, Coventry Township, OH (US);
Randhir Shetty, Chapel Hill, NC (US);
Steven Luo, Copley, OH (US);
Mark W. Smale, Hudson, OH (US);
Kevin McCauley, Coventry Township, OH (US);
Randhir Shetty, Chapel Hill, NC (US);
Bridgestone Corporation, Tokyo, JP;
Abstract
A method for polymerizing conjugated diene monomer into polydienes, the method comprising: polymerizing conjugated diene monomer within a liquid-phase polymerization mixture that includes conjugated diene monomer, a lanthanide-based catalyst system, dicyclopentadiene or substituted dicyclopentadiene, and optionally organic solvent, with the proviso that the organic solvent, if present, is less than about 20% by weight based on the total weight of the polymerization mixture.