Patent ID: 8859185

Claim:
A resist underlayer film-forming composition comprising: a polymer including a repeating unit shown by a formula (1), having a dispersity of from 1.4 to 5.0, polystyrene-reduced weight average molecular weight of from 3000 to 10,000; and a solvent, wherein each of R 3 to R 8 individually represent a group shown by a formula (2), a hydrogen atom, a hydroxyl group, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 6 carbon atoms, a substituted or unsubstituted alkoxycarbonyl group having 2 to 10 carbon atoms, a substituted or unsubstituted aryl group having 6 to 14 carbon atoms, or a substituted or unsubstituted glycidyl ether group having 2 to 6 carbon atoms, wherein at least one of R 3 to R 8 represents the group shown by the formula (2), and X represents a substituted or unsubstituted alkanediyl group having 1 to 10 carbon atoms, a substituted or unsubstituted cycloalkanediyl group having 3 to 20 carbon atoms, a substituted or unsubstituted alkanediyloxy group having 1 to 10 carbon atoms, a substituted or unsubstituted cycloalkanediyloxy group having 3 to 20 carbon atoms, a substituted or unsubstituted arylene group having 6 to 14 carbon atoms, or a divalent group formed by an arbitrary combination thereof, wherein R 1 represents a single bond, a substituted or unsubstituted alkanediyl group having 1 to 20 carbon atoms, or a substituted or unsubstituted arylene group having 6 to 20 carbon atoms, and R 2 represents a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 20 carbon atoms.