Patent ID: 6103443
Filing Date: 2000-08-15
Classification: G03F

Abstract:
A photoresist composition comprising:a) a novel polymer which is an acid catalysed reaction product of a substituted diphenyl ether of structure (1) ##STR5## with a phenol selected from catechol, resorcinol and pyrogallol,where, R.sub.1 to R.sub.8 are independently H, OH, halogen, (C.sub.1 to C.sub.4) alkyl, (C.sub.1 to C.sub.4)alkoxy, aryl or aralkyl, m=1-5 and n=1-4, and further where the novel polymer has molecular weight ranging from about 1000 to about 5500;b) a photoactive compound;c) a novolak resin; and,d) a photoresist solvent composition.