Patent ID: 8853031

Claim:
A resist underlayer film composition, comprising a polymer obtained by condensation of, at least, one or more compounds represented by the following general formula (1-1), and one or more compounds represented by the following general formula (2-2), and/or equivalent bodies thereof: wherein R 1 to R 4 independently represent any of a hydrogen atom, a hydroxyl group, or an optionally-substituted saturated or unsaturated organic group having 1 to 30 carbon atoms, wherein at least two of the R 1 to R 4 are each a hydroxyl group and two substituent groups arbitrarily selected from each of R 1 to R 4 may be bonded to further form a cyclic substituent group within a molecule; Q represents an optionally-substituted organic group having 1 to 30 carbon atoms, wherein two Qs arbitrarily selected therefrom may be bonded to form a cyclic substituent group within a molecule; and each of n3 to n6, showing numbers of respective substituent groups, represents an integer of 0 to 2, while satisfying the relationships 0≦n3+n5≦3, 0≦n4+n6≦4, and 2≦n3+n4≦4 in formula (2-2).