Patent ID: 8268529
Filing Date: 2012-09-18
Classification: C08F,G03F

Abstract:
1. A positive resist composition comprising: a base component (A) which exhibits increased solubility in an alkali developing solution under the action of acid; an acid-generator component (B) which generates acid upon exposure; and an organic solvent (S), the base component (A) and the acid-generator component (B) being dissolved in the organic solvent (S), the base component (A) comprising a polymeric compound (A1) comprised of: a structural unit (a0) represented by general formula (a0-1) shown below, a structural unit (a1) derived from an acrylate ester containing an acid dissociable, dissolution inhibiting group, and a structural unit (a5) represented by general formula (a5-1) shown below: wherein R wherein R represents a hydrogen atom, a lower alkyl group of 1 to 5 carbon atoms or a halogenated lower alkyl group of 1 to 5 carbon atoms; Y