Patent ID: 6106995
Filing Date: 2000-08-22
Classification: G03F

Abstract:
A process for producing an antireflective coating composition comprising:a) providing a polymer defined by the following structure: ##STR5## where, R.sub.1 & R.sub.2 are independently hydrogen, or C.sub.1 to C.sub.5 alkylR.sub.3 is a methyl, ethyl, propyl or butyl groupR.sub.4 -R.sub.7 are independently hydrogen, or C.sub.1 to C.sub.5 alkyln=10 to 50,000(b) formulating a top antireflective coating composition by providing an admixture of:(1) the polymer from step a), having a weight average molecular weight of from about 1000 to 500,000;(2) a fluorine-containing, sparingly water-soluble (0.1%-10% by weight in water) organic C.sub.3 -C.sub.13 aliphatic carboxylic acid;(3) a non-metallic hydroxide; and(4) a solvent.