FLAMMHEMMER UND SCHLAGZÄHMODIFIKATOR, HERSTELLUNGSVERFAHREN DAFÜR UND THERMOPLASTISCHE HARZZUSAMMENSETZUNG DAMIT

Disclosed herein is a flame retardant, an impact modifier and a method of preparing the foregoing flame retardant and impact modifier and a thermoplastic resin composition including the flame retardant and impact modifier. The flame retardant and impact modifier are represented by the following Chemical Formula 1. The preparation method comprises: reacting a phosphorus oxychloride with 2,4-di-tert-butylphenol to prepare 2,4-di-tert-butylphenyl dichlorophosphate; and reacting 2,4-di-tert-butylphenyl dichlorophosphate with phenol to prepare a flame retardant and impact modifier of the followingChemical Formula 1. The thermoplastic resin composition comprises: 100 parts by weight of a thermoplastic resin; and 0.1 to about 30 parts by weight of a flame retardant and impact modifier represented by the following Chemical Formula 1. The flame retardant and impact modifier may improve heat resistance and flowability as well as flame retardancy and impact strength of the thermoplastic resin composition.