Patent ID: 9274428
Filing Date: 2016-03-01
CPC Classification: C08F,C09D,G03F

Claim Text:
1. A resist top coat composition, comprising: a copolymer having a repeating unit p of styrene having a 1,1,1,3,3,3-hexafluoro-2-propanol group and a repeating unit q of acenaphthylene having chemical formula 1, wherein the copolymer is dissolved in an ether solvent, and wherein the ether solvent comprises one or more of diisopropyl ether, diisobutyl ether, diisopentyl ether, di-n-pentyl ether, methylcyclopentyl ether, methyl cyclohexyl ether, di-n-butyl ether, di-sec-butyl ether, di-sec-pentyl ether, di-tert-amyl ether, and di-n-hexyl ether: wherein: R is hydrogen, hydroxyl; R m is an integer, wherein the integer is 1 or 2; wherein p and q are proportions of the respective repeating units in the copolymer having the expressions 0.3≦p≦0.9, 0.1≦q≦0.7, and 0.7≦p+q≦1.