High speed photopolymerizable element with initiator in a topcoa

Details High speed photopolymerizable element with initiator in a topcoa High speed photopolymerizable element with initiator in a topcoa

1989-05-30

1991-01-29

Brammer, Jack

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Radiation sensitive composition or product or process of making

430272, 430273, 430961, G03C 1492

Patent

active

049886070

ABSTRACT:
A high speed photopolymerization negative-acting printing plate containing a layer comprising a photo-sensitized polymerization initiator and polymerizable ethylenically unsaturated compound, exhibits higher speed and good shelf life when at least 20% by weight of the total initiator is situated in an oxygen barrier top coat. Addition of p-substituted-N-disubstituted-anilines to the polymerizable layer gives further improvement in stability.

REFERENCES:
patent: 4250053 (1981-02-01), Smith
patent: 4332873 (1982-06-01), Hughes et al.
patent: 4366218 (1986-12-01), Specht et al.
patent: 4599299 (1986-07-01), Neiss et al.

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