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:
Nov. 06, 2007
Filed:
Aug. 31, 2006
Adel Farhan Halasa, Bath, OH (US);
Laurie Elizabeth Austin, Hartville, OH (US);
Wen-liang Hsu, Cuyahoga Falls, OH (US);
Adel Farhan Halasa, Bath, OH (US);
Laurie Elizabeth Austin, Hartville, OH (US);
Wen-Liang Hsu, Cuyahoga Falls, OH (US);
The Goodyear Tire and Rubber Company, Akron, OH (US);
Abstract
The present invention is directed to a catalyst system for synthesizing rubbery polymers, such as polybutadiene rubber and styrene-butadiene rubber, having a high trans microstructure. The catalyst system, in one embodiment, includes (a) a barium salt of an alcohol that is soluble in a hydrocarbon solvent, and (b) an organomagnesium compound. In one example, the alcohol is a primary or secondary alcohol. The catalyst system can further optionally include an alkali metal alkoxide, an organolithium compound, an amine compound, or mixtures thereof.