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:
Jun. 13, 1989
Filed:
Jun. 27, 1988
Applicant:
Inventors:
W Ronald Darnell, Weber City, VA (US);
Winston J Jackson, Jr, Kingsport, TN (US);
Assignee:
Eastman Kodak Company, Rochester, NY (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528220 ; 528223 ; 528271 ; 528272 ; 528286 ; 528296 ; 528302 ; 528308 ; 5283086 ; 528360 ; 528361 ; 528364 ;
Abstract
Disclosed is an improved process for the preparation of poly(ether-ketone) polymers by the reaction of at least one dicarboxylic acid with certain bis(phenoxybenzoyl) compounds in the presence of a perfluoroalkylsulfonic acid and (1) an oxide of phosphorus and/or (2) a perhaloalkanoic anhydride.