| abstract |
Provided is a resin composition capable of preparing a cured product that imparts flame retardancy to a cured product of the resin composition and can achieve a low linear thermal expansion coefficient, a low dielectric loss tangent, and a high glass transition temperature. . (A) a flame retardant having at least one vinyl group or styryl group in the molecule and a phosphaphenanthrene skeleton; (B) at least one vinyl group, styryl group, allyl group in the molecule; A radically polymerizable resin having a functional group selected from an acrylic group, and (C) a resin composition containing an inorganic filler, the resin component contained in the resin composition excluding the inorganic filler being 100% by mass In this case, a resin composition having a phosphorus content of 0.2 to 5% by mass is provided. [Selection figure] None |