Curable resin composition containing organophosphorus compound, organophosphorus compound, cured product thereof, and method for producing organophosphorus compound.

摘要

To provide an organic phosphorus compound useful as e.g. a flame retardant of an epoxy resin cured product, and a flame-retardant resin composition prepared therewith.SOLUTION: An organic phosphorus compound is obtained by the reaction of 1 mol of a quinone compound having a benzene ring, a naphthalene ring, an anthracene ring, or a phenanthrene ring with 2 mol of a phosphorus compound represented by formula (2). (Rand Rare each a hydrocarbon group optionally having a hetero element, where Rand Rmay be bound to each other to form a cyclic structure; n1 and n2 are each 0 or 1).SELECTED DRAWING: None