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. 19, 2017
Filed:
Aug. 10, 2015
Applicant:
Solvay Advanced Polymers, Llc, Alpharetta, GA (US);
Inventors:
Chantal Louis, Alpharetta, GA (US);
William Gandy, Alpharetta, GA (US);
Edward Ryan, Roswell, GA (US);
Geoffrey Scott Underwood, Atlanta, GA (US);
Kong Yi, Marietta, GA (US);
Assignee:
Solvay Advanced Polymers, L.L.C., Alpharetta, GA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 8/02 (2006.01); C08G 65/40 (2006.01); C07C 315/06 (2006.01); C01D 7/00 (2006.01); C07C 45/78 (2006.01); C08G 75/23 (2006.01);
U.S. Cl.
CPC ...
C08G 65/4012 (2013.01); C01D 7/00 (2013.01); C07C 45/78 (2013.01); C07C 315/06 (2013.01); C08G 8/02 (2013.01); C08G 65/4087 (2013.01); C08G 65/4093 (2013.01); C08G 75/23 (2013.01); C08G 2261/3444 (2013.01);
Abstract
The presence of certain impurities in diphenyl sulfone have a deleterious effect on the properties of the poly(aryletherketone)s produced therein, including one or more of color, melt stability, molecular weight, crystallinity, etc. and here identify those impurities and provide processes for the recovery of the diphenyl sulfone.