COPOLYESTER COMPOSITIONS, PROCESS FOR PREPARING THE SAME AND BIAXIALLY ORIENTED COPOLYESTER FILMS

摘要

Disclosed herein is a copolyester composition comprising PENBB and 0.001 to 5 % by weight of fine particles having an average diameter of 0.01 to 3.0 νm. Further disclosed are films made from this copolyester composition. PENBB as disclosed herein is a copolyester containing units of formula (I).