Photopolymer derivatives of polyvinyl alcohol

Details Photopolymer derivatives of polyvinyl alcohol Photopolymer derivatives of polyvinyl alcohol

1983-03-15

1984-10-23

Brammer, Jack P.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

20415914, 20415922, 430270, 430281, 430287, 430 28, 525375, G03C 168

Patent

active

044789777

ABSTRACT:
Photopolymers which are derivatives of polyvinyl alcohol and are useful as resists, stencils and relief images are made by reacting a compound having one or two formyl or acetal groups, such as terephthaldehyde, a naphthalene dialdehyde or the reaction product of an acetal and hydroxy-benzaldehyde, with an aromatic or heterocyclic compound carrying an acetyl group, so as to produce an intermediate of the formula: ##STR1## and reacting this with a polyvinyl alcohol to yield a photosensitive product of the formula: ##STR2## wherein m is 0 or 1, n is an integer from 1 to 6, X is an aromatic or heterocyclic group carrying at least one polar group and Z is an aromatic group of the formula: ##STR3## wherein R' and R", when both are present, are the same or different and each represents a hydrogen or a halogen atom or an alkyl, alkoxy, hydroxyalkyl, hydroxy, nitro or cyano group.

REFERENCES:
patent: 4101323 (1978-07-01), Buhr et al.
patent: 4339524 (1982-07-01), Ichimura et al.
patent: 4413052 (1983-11-01), Green et al.

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