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. 24, 1993
Filed:
Aug. 07, 1990
Applicant:
Inventors:
Rodney M Potts, Leeds, GB;
Terence Etherington, Leeds, GB;
Jianrong Ren, Morley, GB;
Victor Kolodziejczyk, Bradford, GB;
Assignee:
DuPont (U.K.) Limited, Stevenage Hertfortshire, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03F / ; G03F / ; C08F / ;
U.S. Cl.
CPC ...
430195 ; 430167 ; 430197 ; 430325 ; 5253273 ; 5253304 ; 5253305 ; 5253335 ; 525344 ; 525504 ; 525505 ;
Abstract
A radiation-sensitive compound, which comprises a polymer including a plurality of azide-substituted aromatic ester groups and a plurality of carboxylic or sulphonic acid groups capable of imparting to the compound solubility in aqueous or alkaline medium. After image-wise exposure, the compound can be developed using an aqueous or alkaline developer. The compound is useful in the production of radiation sensitive plates for the manufacture of lithographic printing plates which can be baked to improve printing life.