POLYESTER AND POLYAMIDE COMPOSITIONS OF LOW RESIDUAL ALDEHYDE CONTENT

摘要

A mixture of a polyester or a polyamide, such as poly(ethylene terephthalate ) PET, and a suitable stabilizer selected from the group consisting of certain Mannich base compounds, when extrusion compounded exhibits a lower residual acetaldehyde content than does PET 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 whic h are used to store consumer materials, for example food, beverages and water.