| 摘要 |
<p>The present invention relates to a polyester composition, comprising 0.5 to 300 ppm, as titanium atoms, of a compound oxide (A) containing titanium as an essential element and also containing a metal element selected from a group consisting of aluminum, zirconium, germanium, tin and silicon, and 0.001 to 40 wt% of particles with an average particle size of 0.01 to 10 mu m, and also to a method of production thereof, and a film composed of said polyester composition. The polyester composition of the present invention is excellent in moldability and heat resistance and solves such problems as die contamination, filtration pressure rise and yarn breaking in the production of such moldings as fibers, films and bottles. Furthermore, the polyester film of the present invention is suitable for packaging, being excellent in taste property and long-term storage quality, and can be suitably used for packaging materials, above all for being formed, especially for being laminated and formed with a substrate such as paper, nonwoven fabric or metal, to make containers, etc.</p> |
