Patent ID: 6475692
Filing Date: 2002-11-05
Classification: G03F

Abstract:
A radiation-sensitive composition comprising(a) at least one naphthoquinone diazide derivative; (b) at least one novolak; and (c) a copolymer consisting of the units A, B and C wherein unit A is present in an amount of 5 to a maximum of 50 mol % and has the following formula: wherein R1 and R4 are selected such that the homopolymer of A is alkali-soluble, unit B is present in an amount of 20-70 mol % and has the following formula: wherein R2, R6 and R7 are selected such that the homopolymer of B has a glass transition temperature above 100Â° C., and unit C is present in an amount of 10-50 mol % and has the following formula: wherein R3 and R5 are selected such that the homopolymer of C is water-soluble, with the proviso that unit C is different from unit A.