| abstract |
(57) [Summary]nThe present invention relates to (A) about 85 to 100 mol% of 2,6-naphthalenedicarboxylic acid and at least one of 2 to 16 carbon atoms, based on 100 mol%, based on the total mol% based on the glycol portion and the acid portion of the polyester. The present invention relates to a polyester composition comprising 95 to 99.90% by weight of a polyester comprising 85 to 100% by mole of an aliphatic glycol, and (B) 0.1 to 5.0% by weight of one or more polycarbodiimides. These polyester compositions have improved hydrolytic stability of end products such as fibers, monofilaments, films, thermoformed articles, containers (containers) and naphthalene-based sheets. |