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 hydroxybenzaldehyde, with an aromatic or heterocyclic compound carrying an acetyl group, so as to produce an intermediate of the formula:
and reacting this with a polyvinyl alcohol to yield a photosensitive product of the formula:
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:
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.
作为聚
乙烯醇衍
生物并可用作抗蚀剂、模板和浮雕图像的感光聚合物,是通过使具有一个或两个甲酰基或
乙缩醛基团(如
对苯二甲醛、
萘二醛或
乙缩醛与羟基
苯甲醛的反应产物)的化合物与带有乙酰基的芳香族或
杂环化合物反应,生成式如下的中间体:
并将其与聚
乙烯醇反应,生成式中的光敏产品:
其中 m 为 0 或 1,n 为 1 至 6 的整数,X 为至少带有一个极性基团的芳香族或杂环基团,Z 为式中的芳香族基团:
其中 R'和 R"(当两者都存在时)相同或不同,且各自代表氢或卤原子或烷基、烷氧基、羟基烷基、羟基、硝基或
氰基。