PROPERTY ENHANCEMENT OF POLYAMIDES BY CO-CONDENSATION WITH LIGHTSTABILIZERS

摘要

The instant invention relates to polyamides containing chemically bound UV- absorbers of the type oxanilide or benzylidene-malonate produced by co- condensation of the UV-absorbers with the prepolymeric compounds and to a process for the production of polyamides with improved mechanical properties wherein the prepolymeric compounds and the UV-absorbers are mixed prior to t he condensation reaction and wherein the UV-absorbers are used in a concentrati on range of from 0.0001 to 5 % by weight, related to the prepolymeric compounds.The instant polyamides are especially suitable for the manufacture of fibres having improved mechanical properties.