摘要 |
The present invention provides a polymerizable composition comprising (A) a compound including a polymerizable unsaturated group and (B) a macromolecular compound including, at a side chain thereof, a structure represented by the following general formula (I): <?in-line-formulae description="In-line Formulae" end="lead"?>Z<SUP>-</SUP>M<SUP>+</SUP> General formula (I)<?in-line-formulae description="In-line Formulae" end="tail"?> wherein Z<SUP>-</SUP> represents COCOO<SUP>-</SUP>, COO<SUP>-</SUP>, SO<SUB>3</SUB><SUP>-</SUP>, or SO<SUB>2</SUB>-N<SUP>-</SUP>-R where R represents a monovalent organic group and M<SUP>+</SUP> represents an onium cation. The present invention also provides a negative type planographic printing plate precursor responsive to an infrared laser, the precursor being superior in recording sensitivity and printing durability and using the polymerizable compound as a recording layer.
|