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:
Sep. 18, 1990
Filed:
Oct. 12, 1988
Applicant:
Inventor:
Ronald R Lamonte, Flanders, NJ (US);
Assignee:
Hoechst Celanese Corporation, Somerville, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528181 ; 528176 ; 528179 ; 528180 ;
Abstract
Improved polyarylate color is achieved by dissolving in the polyarylate-forming reaction mixture a cobalt salt of an ester of a C.sub.3 to C.sub.20 aliphatic or iso-aliphatic hydrocarbon. The cobalt salt is preferably predissolved prior to addition to the reaction mixture.