Patent ID: 6911292

Claim:
A positive resist composition comprising an alkali-soluble novolak resin comprising recurring units of the structural formula (1): wherein m is an integer of 0 to 3, and having a weight average molecular weight of 1,000 to 30,000 based on polystyrene standards, in which 3 to 27 mol % of the hydrogen atoms of hydroxyl groups axe substituted with 1,2-naphthoquinonediazidosulfonyl ester groups, and a methyl vinyl ether-monoalkyl maleate copolymer represented by the structural formula (2): wherein R is a straight, branched or alicyclic alkyl group having 1 to 10 carbon atoms, and having a weight average molecular weight of 100,000 to 500,000 based on polystyrene standards.