A mixture of a polyester, such as poly(ethylene terephthalate) PET, or a
polyamide, and a suitable stabilizer selected from the group consisting
of hydroxylamine stabilizers, substituted hydroxylamine stabilizers,
nitrone stabilizers and amine oxide stabilizers, when extrusion
compounded exhibits a lower residual acetaldehyde content than does
polyester or polyamide alone when similarly treated. The invention
pertains to any polyester or polyamide used in the manufacture of molded
articles, fibers or films, for instance bottles or containers which are
used to store consumer materials, for example food, beverages and water.