Patent ID: 7232642
Filing Date: 2007-06-19
Classification: C08F,G03F,Y10S

Abstract:
1. A chemically amplified positive resist composition comprising (A) a resin which comprises (i) at least one structural unit selected from the group consisting of structural units of the formulas (IV) and (V)  wherein X (ii) a structural unit of the formula (I)  wherein X represents a hydrogen atom, an alkyl group having 1 to 4 carbon atoms or a perfluoroalkyl group having 1 to 4 carbon atoms, Z represents a divalent hydrocarbon group having 1 to 12 carbon atoms, R represents an alkyl group having 1 to 6 carbon atoms, and m represents an integer of 0 to 2, and (iii) a structural unit of the formula (II)  wherein X (B) an acid generator.