Patent ID: 6187506
Filing Date: 2001-02-13
Classification: G03F

Abstract:
A coating composition for use in photolithography, comprisinga) a polymer having a structure, ##STR8##where,R.sub.1 -R.sub.3 are independently H, (C.sub.1 -C.sub.10) alkyl or (C.sub.1 -C.sub.10) alkoxy,R.sub.5 -R.sub.8 do not have a crosslinking group and are independently H, (C.sub.1 -C.sub.10) alkyl, (C.sub.1 -C.sub.10) alkoxy, hydroxyalkyl, nitro, halide, cyano, aryl, alkylaryl, alkenyl, dicyanovinyl, SO.sub.2 CF.sub.3, COOZ, SO.sub.3 Z, COZ, OZ, NZ.sub.2, SZ, SO.sub.2 Z, NHCOZ, SO.sub.2 NZ.sub.2, where Z is H or (C.sub.1 -C.sub.10) alkyl, hydroxy (C.sub.1 -C.sub.10) alkyl, (C.sub.1 -C.sub.10)alkylOCOCH.sub.2 COCH.sub.3, or R.sub.7 and R.sub.8 combine to form a cyclic group,X.sub.1 is C.dbd.O, OCO, CONH, O, aryl, (C.sub.1 -C.sub.10) alkyl, cyclohexyl, pyridine or pyrollidone,X.sub.2 is S, S(C.sub.1 -C.sub.10) alkyl, O, O(C.sub.1 -C.sub.10) alkyl, NH, N(C.sub.1 -C.sub.10) alkyl, alkyl, or hydroxyalkyl(C.sub.1 -C.sub.10),n is independently 0-2,A is an electronwithdrawing group,Y is a conjugated moiety e.g. N.dbd.N, CW.dbd.CW, CW.dbd.N, or N.dbd.CW, where W is H, (C.sub.1 -C.sub.10) alkyl or (C.sub.1 -C.sub.10) alkoxy,x>0, and y.gtoreq.0, andB is selected from a 5-10 membered aromatic group, polyaromatic group or a heterocyclic aromatic group; and,b) a suitable solvent.