Patent ID: 8685618

Claim:
A resist composition comprising a resin having a structural unit represented by the formula (I), a resin having a structural unit represented by the formula (II) and being insoluble or poorly soluble in alkali aqueous solution, but becoming soluble in an alkali aqueous solution by the action of an acid and not including the structural unit represented by the formula (I) and an acid generator; wherein R 1 represents a hydrogen atom or a methyl group; A 1 represents a C 1 to C 6 alkanediyl group; A 13 represents a C 1 to C 6 perfluoro alkanediyl group; X 12 represents *â€”COâ€”Oâ€” or *â€”Oâ€”COâ€”; * represents a bond to A 13 ; A 14 represents a C 1 to C 17 aliphatic hydrocarbon group that optionally has one or more halogen atoms; wherein R 3 represents a hydrogen atom, a halogen atom or a C 1 to C 6 alkyl group that optionally has one or more halogen atoms; ring X 1 represents a C 2 to C 36 heterocyclic group, one or more hydrogen atoms contained in the heterocyclic group may be replaced by a halogen atom, a hydroxy group, a C 1 to C 24 hydrocarbon group, a C 1 to C 12 alkoxyl group, a C 2 to C 4 acyl group or a C 2 to C 4 acyloxy group.