Konica Minolta, Inc.

Yiqiang Yu

Ryuji Kitani

Masashi Mamino

Yo Nakajima

Provided is a thermoplastic resin composition having high flame resistance, high fluidity during injection molding, and improved impact resistance in a molded article. To provide a method for producing a thermoplastic resin composition, the method including a step (1) of obtaining a polyester resin mixture by melt-kneading a crystalline terephthalate-based polyester resin, and a polyester resin A including at least one kind selected from the group consisting of isophthalic acid, orthophthalic acid, naphthalenedicarboxylic acid, anthracene dicarboxylic acid and pyridine dicarboxylic acid as an aromatic dicarboxylic acid component with an extruder, and a step (2) of mixing the polyester resin mixture, a polycarbonate resin, a flame retardant and a toughening agent.

Method for producing thermoplastic resin composition

Provided is a thermoplastic resin composition having high flame resistance and high fluidity during injection molding, and improved impact resistance in a molded article. A method for producing a thermoplastic resin composition, the method including 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, a polycarbonate resin, a flame retardant, a dripping inhibitor and a toughening agent, wherein the cylinder temperature of the extruder is 250 to 280&#xb0; C.

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Hachioji, Japan

Yiqiang Yu