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.:

US 7291687 B1

PDF
Full Text
Expired
Date of Patent:
Nov. 06, 2007

Filed:

Aug. 31, 2006
Applicants:

Adel Farhan Halasa, Bath, OH (US);

Laurie Elizabeth Austin, Hartville, OH (US);

Wen-liang Hsu, Cuyahoga Falls, OH (US);

Inventors:

Adel Farhan Halasa, Bath, OH (US);

Laurie Elizabeth Austin, Hartville, OH (US);

Wen-Liang Hsu, Cuyahoga Falls, OH (US);

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 36/04 (2006.01); C08F 4/50 (2006.01);
U.S. Cl.
CPC ...
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.


Find Patent Forward Citations

Halasa, Adel. (2007). Catalyst system for synthesizing rubbery polymers having a high trans microstructure content (U.S. Patent No. 7291687). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7291687

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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