Terephthalic acid/p,p-sulfonyldibenzoic acid/ethylene glycol/neopentyl glycol polyester compositions and containers made therefrom

摘要

Copolyesters having an oxygen permeability of less than 15 cc. mil/100 in.2xdayxatm. (at 50% relative humidity and about 73 DEG F.) and a glass transition temperature in excess of 72 DEG C. and having the following four (4) repeating units are contemplated: C(O)C6H4SO2C6H4C(O) (a) <IMAGE> (b) OCH2CH2O (c) OCH2C(CH3)2CH2O .