| 摘要 |
PHOTOPOLYMERS Photosensitive polymer compositions are based upon derivatives of polyvinylalcohol and constituents of the formula: <IMG> wherein: <IMG> or <IMG> m = 0 or 1; n = 0 or an integer from 1-6, subject to the proviso that when n=0 then m=0; B = H or a tertiary amine, methoxy or ethoxy group; and X = O, S, or Se or a divalent NR1 or C(R1)2 group, where R1 = H or an alkyl, hydroxyalkyl, aryl or aralkyl group; Z = an anion and R2 and R3 are the same or different and each represents an alkyl, hydroxyalkyl, aryl, halogen, nitro or cyano group or R2 and R3 taken together may form part of the same aliphatic ring system. The preparation and typical uses of the polymer compositions are also described.
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