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:
Aug. 21, 1984
Filed:
Sep. 29, 1982
Applicant:
Inventors:
John W Verbicky, Jr, Scotia, NY (US);
James A Cella, Clifton Park, NY (US);
Elbridge A O'Neil, Jr, Ballston Spa, NY (US);
Assignee:
General Electric Company, Schenectady, NY (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
548461 ;
Abstract
A method is provided for making aromatic bis(etherimide)s by effecting reaction between an aromatic bisphenoxide salt and a nitro-substituted N-alkyl phthalimide in the presence of a non-polar organic solvent and an effective amount of a phase transfer catalyst. There is utilized as the phase transfer catalyst, a mixture of a dipolar aprotic solvent and a polyvalent metal salt such as zinc chloride.