FLAME-RETARDANT RESIN COMPOSITION, AND PREPREG, RESIN SHEET AND MOLDED ARTICLE USING THE SAME

摘要

There is provided a flame-retardant resin composition which can maintain heat resistance at a high level and simultaneously provide low dielectric constant and low dielectric loss tangent while ensuring flame-retardancy without containing any halogen compound causing the generation of harmful substances. This flame-retardant resin composition comprises 0.1 to 200 parts by mass of a cyclophosphazene compound represented by the following formula (1): wherein n=3 to 25; and one of R1 and R2 is CN and the other is H, or both of R1 and R2 are CN, based on 100 parts by mass of a resin component containing a polyfunctional epoxy resin having a biphenyl aralkyl structure, wherein the ratio of cyanophenoxy groups in the compound is 2 to 98% of the total number of phenoxy groups and cyanophenoxy groups in the compound.