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:
Nov. 18, 1997
Filed:
Jul. 02, 1996
Albert S Deutsch, Hartsdale, NY (US);
Precision Lithograining Corp., South Hadley, MA (US);
Abstract
A water soluble diazonium salt composition made by the condensation of diazoaryl amines and aldehydes and precipitated to form a polymeric anionic species having both ZnCl.sub.4.sup.= and HSO.sub.4.sup.- moieties. These composition are blended with suitable binders, colorants and other optional components to produce light sensitive coating compositions. When applied to aluminum substrates, these light sensitive coating compositions form lithographic printing plates that are especially stable under high humidity conditions. Such plates may be developed by either water alone or by water which contains surfactants and/or a small amount of an organic solvent.