Patent ID: 8378016
Filing Date: 2013-02-19
Classification: C08F,C08J

Abstract:
1. A chemically amplified positive resist composition comprising a resin which generates an acid by irradiation and is a salt of an organic cation and an anionic polymer wherein the anionic polymer has no carbon-carbon unsaturated bond, and comprises a structural unit derived from an acrylic compound having an anionic group or a structural unit derived from an alicyclic compound having an anionic group wherein the structural unit derived from an acrylic compound having an anionic group is a structural unit represented by the formula (Ia): wherein R represents a hydrogen atom, a C1-C4 alkyl group or a C1-C4 perfluoroalkyl group, Q the structural unit derived from an alicyclic compound having an anionic group is a structural unit represented by the formula (Ib): wherein Q a resin which contains a structural unit which has an acid-labile group and which itself is insoluble in an alkali aqueous solution but becomes soluble in an alkali aqueous solution by the action of an acid.