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:
Jun. 05, 1984
Filed:
Sep. 13, 1983
Applicant:
Inventors:
Michael G Fickes, Colts Neck, NJ (US);
Peter F Warfield, Westfield, NJ (US);
Assignee:
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03C / ;
U.S. Cl.
CPC ...
430306 ; 430300 ; 430309 ; 430325 ; 430331 ; 430286 ;
Abstract
Process for improving ozone resistance of photosensitive flexographic relief printing plates prepared from at least 30% by weight of a block copolymer as defined, at least 1% by weight of at least one addition polymerizable ethylenically unsaturated compound, and a polymerization initiator wherein there is applied to the dry relief surface of said plates a solvent solution containing at least 1% by weight of a nickel or zinc dialkyldithiocarbamate compound where alkyl is from 1 to 4 carbon atoms. The treated plates which possess improved ozone resistance are useful for flexographic printing.