Patent ID: 9086628
Filing Date: 2015-07-21
Classification: C08K,G03F

Abstract:
1. A resist protective film-forming composition comprising a polymer comprising recurring units of the general formula (1) and having a weight average molecular weight of 1,000 to 500,000, wherein R 1 is hydrogen or a straight, branched or cyclic C 1 -C 20 monovalent hydrocarbon group in which a constituent moiety —CH 2 — may be replaced by —O— or —C(═O)—, R 2 is hydrogen, fluorine, methyl or trifluoromethyl, Aa is a straight, branched or cyclic C 1 -C 20 hydrocarbon or fluorinated hydrocarbon group having a valence of k 1 +1, Ab is a straight, branched or cyclic C 1 -C 6 divalent hydrocarbon group, k 1 is an integer of 1 to 3, and k 2 is 1.