abstract |
The present invention provides a polymer which is excellent in heat resistance, can reduce a gas generated during heating, has a high dissolution rate to an organic solvent or an alkali, and is excellent in alkali developability. The present invention finds a novel polymer which is an N-substituted maleimide and/or a compound of a specific structure, that is, an ether dimer of 2-(hydroxyalkyl)acrylate, vinyltoluene, and an acid group. The monomer is an essential component. |