Patent ID: 9353259
Filing Date: 2016-05-31
CPC Classification: C08J,C08L

Claim Text:
1. A method for producing a thermoplastic resin composition comprising: the step (1) of obtaining a polyester resin mixture by melt-kneading 50 to 80 parts by weight of crystalline polyester resin and 20 to 50 parts by weight of amorphous polyester resin with an extruder; and the step (2) of mixing the polyester resin mixture, polycarbonate resin, a flame retardant, a dripping inhibitor and a toughening agent, wherein the cylinder temperature of the extruder is 250 to 280° C., wherein the amount of heat release (ΔH A ) in the DSC melting curve of the polyester resin mixture is 70% or less with respect to the amount of heat release (ΔH B ) in the DSC melting curve of the crystalline polyester resin (ΔH A /ΔH B ≦0.7).