| 摘要 |
PURPOSE: A polyester composition and a polyester film are provided to prevent the clogging of a filter, and to secure the superior activity, runnability, and abrasion resistance. CONSTITUTION: A polyester composition polymerized by using an aluminum compound and a polycondensation catalyst containing a lithium compound contains 0.02~1wt% of inactive inorganic particle selected from the group consisting of titanium dioxide, alumina, aluminosilicate, silicon dioxide, calcium oxide, calcium carbonate, barium sulphate, talc, mica, kaolinite, and zeolite.
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