Patent ID: 6403280
Filing Date: 2002-06-11
Classification: G03F,Y10S

Abstract:
A radiation sensitive resin composition comprising(A) a resin containing an alkaline insoluble or less soluble group which is dissociable with acid, said resin being soluble in an alkaline solution when said group is dissociated, and being a copolymer containing a recurring unit (I), a recurring unit (II) and a recurring unit (III-1) represented by the formula (1): wherein A and B represent independently a hydrogen atom, or an organic group having 20 or less carbon atoms which can be dissociated in the presence of acid to produce an acidic functional group, at least one of A and B being said acid-dissociable organic group; X and Y represent independently a hydrogen atom or an alkyl group having 1 to 4 carbon atoms; n is an integer of 0 to 3; R1 represents a hydrogen atom, a methyl or methylol group; R2 represents a divalent hydrocarbon group having an alicyclic group and having 3 to 15 carbon atoms; and(B) a radiation sensitive acid-generator, wherein a monomer capable of giving the recurring unit (III-1) is at least one (meth)acrylic acid derivative selected from the group consisting of those represented by the formulae (4-1) to (4-24):