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:
Dec. 31, 1991
Filed:
Oct. 03, 1989
Applicant:
Inventors:
Anthony J Dias, Linden, NJ (US);
Joseph A Olkusz, Fanwood, NJ (US);
Assignee:
Exxon Chemical Patents Inc., Linden, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
528383 ; 525242 ; 5253328 ; 5253329 ; 5253331 ; 5253332 ; 5253333 ;
Abstract
A method for preparing functionalized polymers formed by anionic polymerization, e.g., polystyrene, polyisoprene, etc., generally comprising the steps of conducting anionic polymerization, reacting the formed polymer with a sterically hindering compound such as 1,1-diphenylethylene, in the presence of a polar diluent, such as tetrahydrofuran, and then contacting the polymer so formed with CO.sub.2.
Quick Actions:
Dias, Anthony. (1991). Functionalization of polymeric organolithium compounds by carbonation (U.S. Patent No. 5077346). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5077346
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