abstract |
The present invention is a polyester composition comprising a polyester, a magnesium compound, an alkali metal compound, and a phosphorus compound, wherein the magnesium composition contains 400 to 2700 ppm of magnesium atoms, 40 to 270 ppm of alkali metal atoms in terms of mass, And a polyester composition for a masterbatch containing 200-1700 ppm of phosphorus atoms, a melt specific resistance of 0.005 × 10 8 to 0.05 × 10 8 Ω · cm, and few foreign particles observed under specific conditions. It is a polyester composition for a masterbatch having a sufficiently low melt specific resistance, few foreign matters, and excellent color tone and thermal stability. |