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. 30, 1982
Filed:
Oct. 02, 1981
Herbert J Pine, Edison, NJ (US);
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Abstract
Compatible, aqueous developable photopolymerizable composition consisting essentially of (a) 22 to 32% by wt. of a monomeric compound having at least two terminal ethylenic groups, (b) 0.1 to 5.0% by wt of a photoinitiator or initiator system, (c) 40 to 80% by wt of a binder system which is the reaction product of (1) 65 to 87 parts by wt of a terpolymer of methylmethacrylate, butylmethacrylate and methacrylic acid as defined, (2) 5 to 20 parts by wt of a polyamide resin and (3) 5 to 20 parts by wt of a copolymer of vinyl pyrrolidone and vinyl acetate, (d) 0.03 to 0.10% by wt of a thermal polymerization inhibitor, and optionally up to 18% by wt of a plasticizer and up to 2.0% by wt of a tertiary amine capable of salt formation with a carboxylic acid. Aqueous developable photopolymerizable elements comprise a support bearing a layer of the composition. Relief printing plates can be prepared by imagewise exposing and developing the elements.