| abstract |
(57) [Problem] To provide a method for producing a colored flame-retardant resin composition having excellent flame retardancy and colorant dispersibility in a thin-walled molded article. SOLUTION: Based on 100 parts by weight of an uncolored flame-retardant resin composition comprising 100 parts by weight of a thermoplastic resin (A) and 0.01 to 40 parts by weight of a flame retardant (B), 760 mmH is used. 0.001 to 5 parts by weight of an organic compound (C) having a boiling point of 80 to 200 ° C in 0.1 g, and a colorant (D) of 0.1 to 0.1 parts by weight. 0001 to 10 parts by weight, and using an extruder having a vent port, a method of coloring the flame-retardant resin composition by melt-kneading while devolatilizing from the vent port. The method for coloring a flame-retardant resin composition, wherein the content of the component (C) contained in the resin composition is 500 ppm by weight or less and the total amount of the lubricant (E) is 3,000 ppm by weight or less. . |