Patent ID: 7879530
Filing Date: 2011-02-01
Classification: C08L,C09D,G03F,Y10S

Abstract:
1. An antireflective coating composition comprising (A) at least one polymer comprising recurring units of at least one type represented by the general formula (1) and/or (2) and having an extinction coefficient at a preselected imaging radiation wavelength in the range of 0.01 to 0.4, and (B) at least one polymer containing an aromatic ring and having an extinction coefficient at a preselected imaging radiation wavelength in the range of 0.3 to 1.2, wherein R 1 is hydrogen, fluorine, methyl, or trifluoromethyl, R 2 and R 3 are each independently hydrogen or a straight, branched or cyclic, monovalent hydrocarbon group of 1 to 8 carbon atoms, or R 2 and R 3 may bond together to form a ring with the carbon atom to which they are attached, R 4 is hydrogen or a straight, branched or cyclic, monovalent hydrocarbon group of 1 to 30 carbon atoms, in which a constituent unit —CH 2 — may be replaced by —O— or —C(═O)—, R 5 to R 7 are each independently hydrogen, halogen, hydroxyl or a straight, branched or cyclic, monovalent organic group of 1 to 15 carbon atoms, or any two of R 5 to R 7 may bond together to form a ring with the carbon atom(s) to which they are attached.