FLAME RETARDANT CONTAINING ORGANOPHOSPHOROUS COMPOUND, ITS PREPARATION PROCESS, AND FLAME RETARDANT RESIN COMPOSITION COMPRISING SAME

摘要

Disclosed are a flame retardant comprising a main component of an organo phosphorus compound, wherein a divalent phenol of dihydroxydiphenylmethane comprised in the organo phosphorus compound comprises 60% or less of 4,4'-dihydroxydiphenylmethane and 40% or more of a total amount of 2,2'-dihydroxyldiphenylmethane and 2,4'-dihydroxyldiphenylmethane; a method of preparing the same, and a flame retardant resin composition comprising the same. The obtained flame retardant has a low viscosity and volatility and it is easy to handle it, and thereby it facilitates easy preparation of the same.