Patent ID: 8445181

Claim:
An antireflective coating comprising a mixture of a first polymer and a second polymer, and a thermal acid generator, where the first polymer comprises at least one fluoroalcohol moiety, at least one aliphatic hydroxyl moiety, and at least one acid moiety other than fluoroalcohol with a pKa in the range of about 8 to about 11; where the second polymer is a reaction product of an aminoplast compound with a compound comprising at least one hydroxyl and/or at least one acid group; wherein the first polymer further comprises a monomeric unit comprising an imide moiety derived from structure (8) or (9) where R 1 , R 2 and R 3 are independently selected from hydrogen and (C 1 -C 4 )alkyl, R″ 4 is a linear (C 1 -C 10 )alkyl group or an (C 6 -C 14 )aryl moiety and R 8 is a direct valence bond or is a (C 1 -C 10 )alkylene spacer group.