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:
Sep. 09, 1980
Filed:
May. 04, 1976
Gene O Fanger, Muncie, IN (US);
George W Brutchen, Winchester, IN (US);
Ball Corporation, Muncie, IN (US);
Abstract
The subject invention relates to photopolymerizable compositions useful for making plastic printing elements for use in photolithography and other photomechanical processes. The photopolymerizable compositions comprise an aqueous mixture of a water-insoluble resin, a water-soluble binder, a crosslinking agent, and a photopolymerization initiator having an alpha-keto ester linkage. In particular, photopolymerization initiators include oxalic acid, sodium oxalate, potassium oxalate, lithium oxalate and urea oxalate. The printing plates prepared from the compositions herein disclosed have improved ink receptivity, good retention of such ink, receptivity even after long continued use, greater durability and excellent binding qualities.