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:
Nov. 10, 2020
Filed:
Mar. 27, 2017
Applicant:
Sabic Global Technologies B.v., Bergen op Zoom, NL;
Inventors:
James Patrick Schulte, II, Evansville, IN (US);
Tarun Kumar Pal, Bangalore, IN;
Meerakani Mohamed Ali Sait, Tamil Nadu, IN;
Assignee:
SABIC GLOBAL TECHNOLOGIES B.V., Bergen op Zoom, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 209/48 (2006.01); C07D 307/89 (2006.01); C09K 21/14 (2006.01); C07C 231/14 (2006.01); C08G 73/10 (2006.01);
U.S. Cl.
CPC ...
C07D 209/48 (2013.01); C07C 231/14 (2013.01); C07D 307/89 (2013.01); C08G 73/1007 (2013.01); C08G 73/1053 (2013.01); C09K 21/14 (2013.01);
Abstract
A method for the manufacture of a bis(ether anhydride) comprises contacting an N-substituted bis(ether phthalimide) with a base under conditions effective to ring open the imides to provide a ring-opened product; and contacting the ring-opened product with an acid under conditions effective to provide a composition comprising the bis(ether anhydride).