Patent ID: 6103845
Filing Date: 2000-08-15
Classification: C08F,G03F,Y10S

Abstract:
A terpolymer for use in a chemically amplified resist, said terpolymer having the formula: ##STR12## wherein R.sub.3 is selected from the group consisting of hydrogen and a C.sub.1 to C.sub.10 aliphatic hydrocarbon, wherein said aliphatic hydrocarbon contains substituents selected from the group consisting of hydrogen, hydroxy, carboxylic acid, carboxylic anhydride, and combinations thereof;R.sub.4 is selected from the group consisting of hydrogen and a C.sub.1 to C.sub.10 aliphatic hydrocarbon, wherein said aliphatic hydrocarbon contains substituents selected from the group consisting of hydrogen, hydroxy, carboxylic acid, carboxylic anhydride, and combinations thereof;R.sub.5 is selected from the group consisting of hydrogen and methyl;R.sub.6 is selected from the group consisting of t-butyl and tetrahydropyranyl;m and n are each integers; andwherein n/(m+n) ranges from about 0.1 to about 0.5.