Patent ID: 8563219

Claim:
A resist composition comprising; (A1) a resin having a structural unit represented by the formula (I), (A2) a resin being insoluble or poorly soluble in alkali aqueous solution, but becoming soluble in an alkali aqueous solution by the action of an acid, (B) an acid generator, and (D) a salt having an anion represented by the formula (IA), wherein R 1 represents a hydrogen atom or a methyl group; A 1 represents a C 1 to C 6 alkanediyl group; R 2 represents a C 1 to C 10 hydrocarbon group having a fluorine atom, wherein R 1A and R 2A independently represent a hydrogen atom, a C 1 to C 12 aliphatic hydrocarbon group, a C 3 to C 20 alicyclic hydrocarbon group, a C 6 to C 20 aromatic hydrocarbon group or a C 7 to C 21 aralkyl group, one or more hydrogen atom contained in the aliphatic hydrocarbon, the alicyclic hydrocarbon group, the aromatic hydrocarbon group and the aralkyl group may be replaced by a hydroxy group, a cyano group, a fluorine atom, a trifluoromethyl group or a nitro group, and one or more —CH 2 — contained in the aliphatic hydrocarbon group may be replaced by —O— or —CO—, or R 1A and R 2A may be bonded together with a nitrogen atom bonded thereto to form a C 4 to C 20 ring.