Polymerizable composition

摘要

A photo- or thermo-polymerizable composition comprises an alkali-soluble polymer containing a structure having both specific polymerizable group and alkali-soluble group on a side chain. A photo- or thermo-polymerizable composition comprises an alkali-soluble polymerizable polymer containing a structure of formula -P 1>-Q(P 4>-Z 2>-P 5>-A)-P 2>-Z 1>-P 3>-X (I) on a side chain. X : polymerizable group; A : alkali-soluble group; Q : hydrocarbon linking group or hetero ring; Z 1>, Z 2>single bond or hydrocarbon linking group; P 1>-P 5>single bond, or a linking group constituted by H, N, O, S, and carbonyl group An independent claim is also included for a planographic printing plate precursor comprising a support and a recording layer containing the above composition.