Patent ID: 6586156
Filing Date: 2003-07-01
Classification: G03F,Y10S

Abstract:
A terpolymer for use in chemically amplified resists comprising the general structure: wherein:a is from about 5 to about 70; b is from about 3 to about 35; c is from about 0 to about 92; R1 is H, C1-C4 alkyl, aryl, CN, or a halogen; R2 is H or C1-C4 alkyl; R3 is a protective room temperature reactive group selected from the group consisting of silylethers, cyclic acetals and cyclic ketals; R4 is an alkyl, hydrogen, halogen, aromatic or another cyclic alkyl group; R5 is a silicon-oxygen group maintained thereon; n is 1, 2, 3, 4, 5, or 6; and a+b+c=100%.