| abstract |
A polymerizable composition having high sensitivity and stability, and a lithographic printing plate precursor having high sensitivity, high printing durability, and high storage stability are provided. A polymerizable composition comprising (A) a borate compound represented by general formula (1), (B) a sensitizing dye, and (C) a polymerizable compound. A lithographic printing plate precursor having an image recording layer containing the polymerizable composition on a support. (In General Formula (1), one or two of R1, R2, and R3 represents OR7, SR8, or NR9R10, and the others represent a hydrogen atom, an alkyl group, an aryl group, or a heterocyclic group. R4, R5, and R6 each independently represents an aryl group or a heterocyclic group, [X] + represents a cation that neutralizes charge, and R7, R8, R9, and R10 each independently represent an alkyl group, an aryl group, or an aryl group. Represents a group or a heterocyclic group, and two R8 or R9 and R10 may form a ring.) [Selection figure] None |