FLAME-RETARDANT PROCESSED RESIN OBTAINED WITH A REACTIVE FLAME RETARDANT

摘要

A reactive flame retardant which imparts excellent flame retardancy to resins even when added in a small amount and can be prevented from bleeding out; and a flame-retardant processed resin obtained with the flame retardant. The reactive flame retardant is, for example, an organophosphorus cyclic compound which is represented by the following general formula (I) and has at least one unsaturated group at ends of R 1 to R 4 . The flame-retardant processed resin is obtained by solidifying a resin composition containing this organophosphorus cyclic compound and then reacting the compound by heating or irradiation with a radiation.