Patent ID: 6809173
Filing Date: 2004-10-26
Classification: B29B,B29C,B29K,C08G,Y02W

Abstract:
A polyamide with low viscosity degradation after remelting, which can be produced by anionic polymerization of lactam in the presence of alkaline catalysts and if necessary activators, wherein the polyamide contains a protic compound as deactivator and has a relative viscosity &eegr;rel of >1.55, measured on a 0.5% by weight solution in m-cresol according to EN ISO 307, and during remelting at 275Â° C. and with a water content of less than 0.15% by weight has a viscosity-corrected degradationVKA=&Dgr;&eegr;rel/(&eegr;sp.1)2 of &lE;0.13