CYANIC ACID ESTER AND CYANIC ACID ESTER PREPOLYMER

摘要

PROBLEM TO BE SOLVED: To provide dicyanic acid ester monomer and prepolymer providing a resin cured product having excellent low dielectric constant and low dielectric loss tangent in a high frequency region, particularly in a gigahertz zone. SOLUTION: The aromatic dicyanic acid ester is represented by formula (wherein R1and R2may be the same or different and they are each an alkyl group; R3and R4may be the same or different and they are each hydrogen or an alkyl group; A is a methylene group). COPYRIGHT: (C)2004,JPO