abstract |
A copolyester comprising repeating units derived from an aliphatic glycol, an aromatic dicarboxylic acid, and the monomer of formula (I): (Formula (I)) wherein n=2, 3 or 4, Z is S(═O) 2 , and wherein comonomer (I) constitutes a proportion of the glycol fraction of the copolyester; and films, fibers, molding compositions or molded articles comprising said copolyester. |