Patent ID: 9321875
Filing Date: 2016-04-26
CPC Classification: C08F,G03F

Claim Text:
1. An additive for resist represented by the following formula (1): wherein R′, R″ and R′″ are each independently selected from the group consisting of a hydrogen atom, a C1-C4 alkyl group, a halogen group, and a C1-C4 haloalkyl group in which one hydrogen atom is substituted with a halogen group; R R wherein in the formula (3), R R R wherein Ra, Rb, Rc and Rd independently represent a group selected from the group consisting of a C1-C10 alkyl group, a C3-C14 monocyclic cycloalkyl group, a C8-C20 bicyclic cycloalkyl group, a C10-C30 tricyclic cycloalkyl group, a C10-C30 tetracyclic cycloalkyl group, a (C1-C5 alkyl)cycloalkyl group, a hydroxyalkyl group, a C1-C10 alkoxy group, a (C1-C5 alkoxy)alkyl group, an acetyl group, an acetylalkyl group, a carboxyl group, a (C1-C5 alkyl)carboxyl group, and a (C3-C10 cycloalkyl)carboxyl group, or adjacent groups may be bonded to each other to form a saturated or unsaturated C6-C18 hydrocarbon ring or a C5-C18 heterocyclic group; x represents an integer from 0 to 3; and y represents an integer from 0 to 5, with the proviso that R wherein R′ and R″ each independently represent a hydrogen atom or a C1-C10 alkyl group, and b is an integer from 0 to 15, R R wherein Re and Rf each independently represent a C1-C10 alkyl group or may be bonded to each other to form a saturated C3-C30 hydrocarbon ring; z1 and w1 each independently represent an integer from 0 to 3; z2 and w2 each independently represent an integer from 0 to 7; 0≦z1+w1≦5; and 0≦z2+w2≦5; l, m, n and o respectively represent the proportions of corresponding repeating units in the main chain, such that l+m+n+o=1, while 0<1/(l+m+n+o)<0.9, 0.2<m/(l+m+n+o)<0.9, 0<n/(l+m+n+o)<0.9, and 0≦o/(l+m+n+o)<0.9; and p represents an integer of 1.