POLYESTER RESIN COMPOSITION AND FILM FOR METAL PLATE LAMINATION

摘要

PROBLEM TO BE SOLVED: To provide a polyester resin composition excellent in heat stability during retention and scarcely causing quality lowering of film even after the composition is repeatedly recycled and to provide a film for metal plate lamination obtained by molding the composition.

SOLUTION: The polyester resin composition comprises a polybutylene terephthalate resin and a polyethylene terephthalate resin. In the polyester resin composition, (1) the content of a titanium compound (a) is 5-50 ppm expressed in terms of its titanium atom and (2) the content of a metal compound (b) selected from the group I and the group II of the periodic table is 1-25 ppm expressed in terms of its metal atom and (3) the content of an oligomer (c) of polybutylene terephthalate is≤1,200 ppm. The film for metal plate lamination is obtained by molding the resin composition.

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