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:
Jan. 27, 1981
Filed:
Apr. 24, 1978
Applicant:
Inventors:
Assignee:
Hoechst Aktiengesellschaft, , DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03C / ; G03C / ; G03C / ; G03F / ;
U.S. Cl.
CPC ...
430286 ; 430176 ; 430192 ; 430270 ; 430292 ; 430300 ; 430302 ; 430323 ; 430914 ; 430919 ; 430925 ; 430326 ; 20415915 ; 20415921 ; 20415923 ; 20415924 ;
Abstract
This invention relates to a radiation-sensitive copying composition which comprises (a) a compound which forms an acid under the influence of actinic radiation, and (b) an organic polymeric compound which contains recurrent acetal or ketal groupings in its main chain and whose solubility in a liquid developer is increased by the action of an acid, each .alpha.-carbon atom of the alcoholic constituent of the acetal or ketal grouping of the organic polymeric compound being aliphatic. The invention also relates to a process for the production of relief images using a radiation-sensitive copying composition.