POLYTRIMETHYLENTEREPHTHALATHARZE MIT VERBESSERTEN EIGENSCHAFTEN

摘要

A Polytrimethylene terephthalate (PTT) resin having an acrolein formation rate at 280 DEG C of less than 15 ppm/minute can be achieved by a content of a compound capable of chemically converting and thereby removing acrolein. Preferably the residual acrolein content of the PTT resin is less than 5 ppm. Preferred additive compounds include dianhydrides, amines and other N-compounds. The additive compounds are added to the polymer in molten state and/or to the resin, which is then processed to fibers, filaments, non-wovens, films and/or mouldings.