Patent ID: 9448480
Filing Date: 2016-09-20
CPC Classification: C08G,C09D,G03F,H01L

Claim Text:
1. A resist underlayer film formation composition for lithography comprising: a polymer having a structure of Formula (1) at a terminal of a polymer chain; a cross-linking agent; a compound promoting a cross-linking reaction; and an organic solvent: (where R 1 , R 2 , and R 3 are each independently a hydrogen atom, a linear or branched C 1-13 alkyl group, a halogeno group, or a hydroxy group; at least one of R 1 , R 2 , and R 3 is the alkyl group; Ar is a benzene ring, a naphthalene ring, or an anthracene ring; two carbonyl groups are bonded to respective two adjacent carbon atoms of Ar; and X is a linear or branched C 1-6 alkyl group optionally having a C 1-3 alkoxy group as a substituent).