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. 11, 1984
Filed:
Jul. 20, 1983
Applicant:
Inventors:
Hans Zweifel, Basel, CH;
Walter Schilling, Himmelried, CH;
Angelo Storni, Rheinfelden, CH;
Daniel Bellus, Riehen, CH;
Assignee:
Ciba-Geigy Corporation, Ardsley, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
549236 ;
Abstract
Anhydrides of formula V ##STR1## where A' is --CH.sub.2 CH.sub.2 --, and R and R.sub.1 independently of one another are hydrogen, halogen, alkyl having 1 to 4 carbon atoms or methoxy are valuable intermediates for the preparation of tricyclic imidyl derivatives. These imidyl derivatives form photocrosslinkable polymers useful for making printing plates and photoresists.