POLYESTER COMPOSITION AND FILM MADE THEREFROM

摘要

PROBLEM TO BE SOLVED: To obtain a composition being excellent in heat stability as a polymer and electrostatic application characteristic, giving a molding excellent in abrasion resistance and running performance and being excellent in productivity in film formation by adding a specified amount of aluminum silicate particles having a mean article diameter and an aluminum fraction in specified ranges to a polyester to form a composition which shows a specified resistance in a specified range when molten. SOLUTION: This composition contains 0.005-10 wt.% aluminum silicate particles having a means particle diameter of 0.001-3μm and an aluminum fraction of 5-30 wt.% and shows a specific resistance of 1×10<7> to 5×10<8>Ω.cm when molten. It is desirable to use calcium carbonate or aluminum silicate particles in combination with the aluminum silicate particles. It is desirable that the calcium carbonate particles have a mean particle diameter larger than that of the aluminum silicate particles and are contained in an amount of 0.005-10 wt.% based on the composition. It is desirable that the aluminum oxide particles have a mean particle diameter of 0.001-0.5μm and are contained in an amount of 0.01-3 wt.% based on the composition.