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. 10, 2019
Filed:
Feb. 18, 2016
Applicant:
Sabic Global Technologies B.v., Bergen op Zoom, NL;
Inventor:
Viswanathan Kalyanaraman, Newburgh, IN (US);
Assignee:
SABIC GLOBAL TECHNOLOGIES B.V., Bergenop Zoom, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09D 179/08 (2006.01); C08G 73/10 (2006.01);
U.S. Cl.
CPC ...
C08G 73/1032 (2013.01); C08G 73/1017 (2013.01); C09D 179/08 (2013.01);
Abstract
A process is disclosed for synthesis of a poly(amic acid), including reacting a dianhydride and a diamine in the presence of a tertiary amine, tertiary ammonium salt, tertiary ammonium hydroxide, secondary amine, secondary ammonium salt, secondary ammonium hydroxide, quaternary ammonium salt, quaternary ammonium hydroxide, ammonium hydroxide, or a combination comprising at least one of the foregoing, in water, at a temperature of 60 C to 180 C, or 60 C to 100 C, or 100 C to 180 C, under an inert atmosphere, with agitation, to produce an aqueous poly(amic acid).