A screen printing stencil made from a composition comprising polyhydroxy compounds having a plurality of 1,2- or 1,3-diol groups along a polymer backbone, the diol groups grafted thereto a compound of formula (I) (where A is an arylene or an alkylene group; X is an oxygen atom, a sulfur atom, a carbon-carbon bond, or a group of formula (a), (b) or (c); R is a hydrogen atom or a methyl group; R.sup.1 is a (C.sub.1 -C.sub.4) alkyl group; m is an integer of from 1 to 8; n is an integer of from 1 to 3; and p is 1 or 2); or an acetal of the polyhydroxy, compound with ethylene glycol.
一种用于制作丝网印刷模板的组合物,包括聚羟基化合物,该聚羟基化合物沿聚合物骨架具有多个1,2-或1,3
-二醇基团,该二醇基团嫁接到式(I)化合物(其中A是芳基或烷基;X是氧原子、
硫原子、碳-碳键或式(a)、(b)或(c)的基团;R是氢原子或甲基基团;R.sup.1是(C.sub.1-C.sub.4)烷基;m是1至8的整数;n是1至3的整数;p是1或2);或聚羟基化合物与
乙二醇的
缩醛。