Photopolymerizable elastomeric mixture and recording material co

Details Photopolymerizable elastomeric mixture and recording material co Photopolymerizable elastomeric mixture and recording material co

1994-10-13

1996-04-30

Rodee, Christopher D.

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Radiation sensitive composition or product or process of making

4302861, 4302871, 430306, G03C 173

Patent

active

055124194

ABSTRACT:
A photopolymerizable elastomeric mixture for producing ozone-resistant flexographic printing forms is disclosed which contains an elastomeric binder, an olefinically unsaturated compound polymerizable by free radicals, a photoinitiator, and a polyglycol ether of the general formula I ##STR1## in which R.sub.1 and R.sub.2 are alkyl, especially (C.sub.1 -C.sub.3)-alkyl,
R.sub.3 is hydrogen or alkyl, especially (C.sub.1 -C.sub.3)-alkyl,
A, B, C can be identical or different and are
and D oxa-n- or -iso-alkylene, especially oxan- or -iso-(C.sub.1 -C.sub.5)-alkylene and
l+m+n+o is 3 to 40.
A recording material containing the photopolymerizable mixture as well as a process for producing a flexographic printing form are likewise described. The flexographic printing form obtained shows improved ozone resistance as compared with forms of the state of the art.

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