Patent · US Expired

Overcoat for light-sensitive materials comprising (1-vinylimidazole) polymer or copolymer

US6649323B2 · kind B2 · utility

9Cited by

5References

39Claims

0Family size

Assignee

Kodak Polychrome Graphics Company Ltd. · US

Inventors

Socrates Pappas · Juno Beach, US
Harald Baumann · Tuttlingen, DE
Udo Dwars · Herzberg, DE
Celin Savariar-Hauck · Badenhausen, DE
Hans-Joachim Timpe · Biberach an der Riß, DE

Key dates

Filing date	Jan 21, 2000
Grant date	Nov 18, 2003
Priority date	—
Expiry date	May 29, 2020

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31935
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A lithographic printing plate precursor comprises a substrate, a free radical polymerizable photosensitive layer comprising a light-sensitive composition on the substrate, and a water-soluble overcoat layer on the photosensitive layer, wherein the overcoat layer comprises polyvinyl alcohol, and a further component that is not amphoteric and is poly(1-vinylimidazole) or a copolymer of 1-vinylimidazole and at least one further monomer. The photosensitive layer comprises a free radical polymerizable component and a photoinitiator.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.