PROCESS FOR THE PRODUCTION OF POLYAMIDE MOULDED PARTS WITH IMPROVED CRYSTALLISATION BEHAVIOUR

摘要

The invention relates to a process for the production of a polyamide molded body of a polyamide composition comprising 0.01-5 wt. % Polyamide 4.6 and 99.99 to 95 wt. % Of a polyamide with a lower melting point than polyamide-4,6 comprises. The polyamide composition is obtained by melt-mixing of a granular mixture of the low-melting polyamide (A) and a composition (B) of the polyamide-4.6 in the low-melting polyamide, wherein the content polyamdie-4.6 in (B) 2-50 wt. % And B is obtained at a temperature above the melting point of polyamide-4.6. The low melting polyamide is preferably polyamide-6. With the method, a sustained increase of 15 degrees Celsius is obtained from the temperature at which crystallization of nylon 6 begins. A gain in cyclustrijd compared with micro talc-nucleated polyamide 6 for the injection molding of larger articles of 30% could be realized.