| abstract |
PROBLEM TO BE SOLVED: To provide a flame retardant having excellent mechanical properties and heat resistance, which is non-halogen and excellent in high flame retardancy, and does not bleed out a flame retardant even when a molded product is exposed to a high temperature state and does not decrease the amount of phosphorus. A polyester resin composition is provided. The following general formula (1) [Chemical 6] (Here, n is an integer of 2 to 20) The organic phosphorus flame retardant represented by the formula is not added during the polymerization process of the thermoplastic polyester resin (A), but is added to the polyester resin (A) during melt-kneading. To add a flame retardant polyester resin composition having the above properties. |