METHOD FOR MANUFACTURING POLYESTER RESIN COMPOSITION, AND POLYESTER FILM

摘要

PROBLEM TO BE SOLVED: To provide a polyester resin composition and a polyester film, containing less foreign matter and having good color tone. SOLUTION: A polyester containing a coloring component is brought into contact with an oxidizing substance or a reducing substance to give a color tone (b value) of 12 or lower. COPYRIGHT: (C)2004,JPO&NCIPI