Patent ID: 7541134

Claim:
An antireflective film-forming composition, comprising: an organic solvent; an acid generator; and a polymer expressed by Formula (1) which is a copolymer polymerized using a basic catalyst of tetramethylammonium hydroxide, comprising monomer units Ua, Ub and Uc: wherein R 1a is a monovalent organic group capable of crosslinking selected from 3,4-epoxycyclohexyl-ethyl and hydroxyl-propyl; R 2 is phenyl; R 5 is a monovalent organic group incapable of crosslinking selected from 3-(2′-methoxypropoxy)propyl and 2,3-dimethoxypropoxypropyl; p is a number in the range 0<p <1, q is a number in the range 0<q<1, wherein p+q<1.