Patent ID: 7632622

Claim:
An antireflective hardmask composition, comprising: (a) a polymer mixture comprising a first polymer comprising one or more of the following monomeric units wherein A is a bivalent radical selected from the group consisting of carbonyl, oxy, alkylene, fluoroalkylene, phenyldioxy, and any combination thereof; R 1 and R 2 are each independently a bivalent radical selected from the group consisting of an alkylene, an arylene, and any combination thereof, and wherein R 1 and/or R 2 is wherein R 3 and R 4 are each independently hydrogen or methyl; and x, y, and z are 0 or integers, wherein y+z>0 and x≧0; and a second polymer comprising the monomeric unit wherein R 5 and R 6 are each independently hydrogen or methyl; R 7 and R 8 are each independently selected from the group consisting of hydrogen, a crosslinking functionality, a chromophore, and any combination thereof; R 9 is selected from the group consisting of an alkylene, a phenyldialkylene, hydroxyphenylalkylene, and any combination thereof; and n is an integer; (b) a crosslinking component; and (c) an acid catalyst.