Patent ID: 8173352

Claim:
A resist composition comprising: (A) a resin comprising a structural unit having an acid-labile group in its side chain and a structural unit represented by the formula (I): wherein R 1 represents a hydrogen atom or a methyl group, Z 1 represents a single bond or —(CH 2 ) k —CO—O—, k represents an integer of 1 to 4, and ring X represents an unsubstituted or substituted C3-C30 cyclic hydrocarbon group having —COO—, (B) a resin comprising a structural unit having an acid-labile group in its side chain and a structural unit represented by the formula (III): wherein R 6 represents a hydrogen atom or a methyl group, R 7 is independently in each occurrence a linear or branched chain C1-C6 alkyl group and n represents an integer of 0 to 4, and (C) an acid generator.