Polyvinyl acetal with hydroxy aliphatic acetal groups useful in

Details Polyvinyl acetal with hydroxy aliphatic acetal groups useful in Polyvinyl acetal with hydroxy aliphatic acetal groups useful in

1987-12-21

1990-07-10

Bowers, Jr., Charles L.

Radiation imagery chemistry: process, composition, or product th

Diazo reproduction, process, composition, or product

Composition or product which contains radiation sensitive...

430176, 430192, 430197, 430278, 430300, 430302, 430325, 430281, 430909, G03C 160, G03C 168

Patent

active

049406469

ABSTRACT:
A polyvinyl acetal is described which contains 4 to 40 mol-% vinyl alcohol units, 1 to 20 mol-% vinyl acetate units, 0 to 85 mol-% vinyl acetal units derived from an aldehyde free of OH groups and 1 to 85 mol-% vinyl acetal units derived from an aldehyde containing OH groups. The polymer is suitable as binder for photosensitive mixtures, in particular for the preparation of printing plates and photoresists. The layers obtained therewith can be developed with neutral or weakly alkaline, purely aqueous solutions and produce printing plates with a high print run performance and good ink receptivity.

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patent: 4780392 (1988-10-01), Walls et al.

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