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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 9982115 B1

PDFFull Text
Date of Patent:
May. 29, 2018

Filed:

Dec. 03, 2014

Process for preparing blends of cis-1,4-polybutadiene and syndiotactic 1,2-polybutadiene

Applicant:

Bridgestone Corporation, Chuo-ku, JP;

Inventors:

Kevin M. McCauley, Akron, OH (US);

Steven Luo, Copley, OH (US);

Assignee:

Bridgestone Corporation, Chuo-ku, JP;

Attorneys:

Meredith E. Hooker

Arthur M. Reginelli

Primary Examiner:

Hui Chin

Int. Cl.
CPC ...
B60C 1/00 (2006.01); C08L 9/00 (2006.01); C08F 136/06 (2006.01); F16F 9/04 (2006.01);
U.S. Cl.
CPC ...
C08L 9/00 (2013.01); B60C 1/00 (2013.01); C08F 136/06 (2013.01); C08F 2410/04 (2013.01); C08L 2205/025 (2013.01); F16F 9/0409 (2013.01); F16F 2224/025 (2013.01);
Abstract

A process for preparing a blend of cis-1,4-polybutadiene and syndiotactic 1,2 polybutadiene, the process comprising the steps of (i) polymerizing 1,3-butadiene in the presence of a lanthanide-based catalyst to form a polymerization mixture including cis-1,4-polybutadiene, and (ii) polymerizing 1,3-butadiene in the presence of a cobalt-based catalyst within the polymerization mixture including cis-1,4-polybutadiene to form syndiotactic 1,2-polybutadiene and thereby produce a blend of cis-1,4-polybutadiene and syndiotactic 1,2-polybutadiene.

Find Patent Forward Citations

McCauley, Kevin. (2018). Process for preparing blends of cis-1,4-polybutadiene and syndiotactic 1,2-polybutadiene (U.S. Patent No. 9982115). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9982115

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

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