POLYESTER COMPOSITION, FILM USING THE SAME AND METHOD FOR PREPARING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a polyester composition having extremely small internal haze, and a polyester film having extremely small internal haze using the same. SOLUTION: The polyester composition is obtained by using a particular phosphonate compound as a deactivator for a polymerization reaction in an amount corresponding to 15-120 mmol% in terms of phosphorus element based on the total mole of acid components in the polyester. The polyester composition comprises <0.1 wt.% externally added particles having an average particle size of≥0.05μm. The film is formed using the same. COPYRIGHT: (C)2011,JPO&INPIT