Patent ID: 6413695
Filing Date: 2002-07-02
Classification: C07C,G03F

Abstract:
A resist composition comprising an ester compound of formula 1: whereinR1 is an n-valent straight, branched or cyclic, saturated or unsaturated hydrocarbon group of 4 to 40 carbon atoms which optionally contain a hetero atom; R2 is a straight, branched or cyclic alkyl group of 1 to 8 carbon atoms or a substituted or unsubstituted aryl group of 6 to 20 carbon atoms; R3 to R12 each are independently hydrogen or a monovalent hydrocarbon group of 1 to 15 carbon atoms wherein any two or more of R3 to R6, taken together, optionally and independently of each other form a ring, excluding a spiro ring, which are divalent hydrocarbon groups of 1 to 15 carbon atoms, or wherein two of R3 to R12 which are attached to adjacent carbon atoms optionally directly bond together to form a double bond; and n is an integer of 1 to 8, with the proviso that the formula also represents an enantiomer.