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:
Oct. 31, 1989
Filed:
Sep. 20, 1988
Applicant:
Inventors:
Emmanuel Lanza, Waterloo, BE;
Jean M Naveau, Nivelles, BE;
Assignee:
Labofina, S.A., Brussels, BE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F / ; C08F / ;
U.S. Cl.
CPC ...
528486 ; 524575 ; 526173 ; 526340 ;
Abstract
Vinyl aromatic-conjugated diene copolymers having polymer chains which end with an alkali metal and which are obtained by the polymerization in solution of at least one vinyl aromatic hydrocarbon and of a conjugated diene in the presence of a catalyst based on an alkali metal are decolorized by treating the copolymer with a monocarboxylic acid of general formula
Quick Actions:
Lanza, Emmanuel. (1989). Process for decolorizing of polymers of the vinylaromatic-conjugated (U.S. Patent No. 4877863). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4877863
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile