| abstract |
(57) [Summary] [Object] To obtain a flame-retardant polyester resin composition having excellent flame retardancy and giving a molded article having good electrical properties, mechanical properties, thermal properties and the like. [Configuration] (A) With respect to the thermoplastic polyester, (B) 2 to 50% by weight of a heterocyclic compound containing a nitrogen atom, 0.1 to 50% by weight of (C) a compound having two or more functional groups, and (D) a phosphorus-based compound. When producing a flame-retardant polyester resin composition containing 0 to 50% by weight of a flame retardant and the composition, after stirring and mixing the components (A) and (C), the remaining components are mixed. A method for producing the above composition, comprising: |