Patent ID: 7781142
Filing Date: 2010-08-24
Classification: C08F,G03F

Abstract:
1. A top coating composition coated on a photoresist film for forming a pattern by applying radiation, the composition comprising at least one solvent selected from the group consisting of n-butanol and 4-methyl-2-pentanol; a non-photosensitive copolymer comprising a recurring unit (I) shown by the following formula (1a) and a recurring unit (II) having a sulfo group, the copolymer having a weight average molecular weight determined by gel permeation chromatography of 2,000 to 100,000, the copolymer being scarcely dissolved in water, wherein R represents a hydrogen atom, a methyl group, a hydroxymethyl group, or a trifluoromethyl group, and R