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:
Apr. 03, 1990
Filed:
Jul. 06, 1987
Applicant:
Inventors:
Josef Pfeifer, Therwil, CH;
Rudolf Duthaler, Zurich, CH;
Assignee:
Ciba-Geigy Corporation, Ardsley, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G / ; C08G / ;
U.S. Cl.
CPC ...
528353 ; 528125 ; 528126 ; 528128 ; 528172 ; 528185 ; 528188 ; 528229 ; 528352 ; 430283 ; 430325 ; 522164 ;
Abstract
Polyimides which essentially consist of 0.1 to 100 mol % of at least one structural element of the formula I ##STR1## and 99.9 to 0 mol % of at least one structural element of the formula II and/or III ##STR2## in which Z and Z' are a tetravalent aromatic radical, Q' is a trivalent aromatic radical, X and X' are a divalent radical of an organic amine, are autophotocrosslinkable. They are suitable for the production of protective films and photographic relief images.