Stabilization of polymers containing poly(alkylene oxide) units

摘要: A stabilized copolyester composition consisting essentially of (a) a multiplicity recurring long chain units and short ester joined head-to-tail through linkages, said being represented by the formula ##STR1## ##STR2## where G is divalent radical remaining after removal terminal hydroxyl groups from poly(alkylene oxide) glycol having molecular weight about 400-6000 carbon to oxygen ratio 2.0-4.3; R carboxyl dicarboxylic acid less than 300 D diol 250; provided amount 15-95 percent (b) an effective concentration amide linkages which on hydrolysis yield primary amino group group. Optionally up five antioxidant may also be present. In specific embodiment instant invention are introduced during preparation copolyetherester assures ultimate in uniformity distribution avoids separate blending step.