Patent ID: 7897319

Claim:
A positive resist composition, comprising: a base material for a pattern-forming material (A), which contains a protector (X1) of a polyhydric phenol compound (x) having two or more phenolic hydroxyl groups and a molecular weight of 450 to 1,500, in which a portion of said phenolic hydroxyl groups are protected with an acid-dissociable, dissolution-inhibiting group; and an acid generator compound (B) that generates an acid upon exposure, wherein the proportion of the protector (X1) within the component (A) is greater than 80% by weight; said component (B) comprises an onium salt-based acid generator (B1) with an alkylsulfonate ion as an anion; and said polyhydric phenol compound (x) is a compound represented by a general formula (I) shown below: (wherein, R 1 through R 6 each represent, independently, an alkyl group of 1 to 10 carbon atoms or aromatic hydrocarbon group which may include a hetero atom within a structure thereof; g and j each represent, independently, an integer of 1 or greater, k represents either 0 or an integer of 1 or greater, and g+j+k is no greater than 5; h is an integer of 1 or greater, 1 and m each represent, independently, either 0 or an integer of 1 or greater, and h+l+m is no greater than 4; 1 is an integer of 1 or greater, n and o each represent, independently, either 0 or an integer of 1 or greater, and i+n+o is no greater than 4; and p is 1).