Patent ID: 9512285
Filing Date: 2016-12-06
CPC Classification: B29C,B29K,B29L,B32B,B33Y,C08J,Y10T

Claim Text:
1. A process for the heat treatment of a (co)polyamide composition, comprising: heating to bring the composition to a temperature below the lowest melting point of the composition, Tfmin, and above the temperature Tfmin−30° C., for at least 10 minutes, cooling to room temperature, recovering the composition, wherein, before treatment and after treatment, the composition exhibits respective initial values of crystal rearrangement temperature, Tir, respective final values of crystal rearrangement temperature, Tfr, and respective values of the difference, Tfr−Tir, between Tfr and Tir, and wherein the value of the difference Tfr−Tir exhibited by the composition after treatment is decreased relative to the value of the difference Tfr−Tir exhibited by the composition before treatment, and wherein the composition comprises a total content of PA11 and of PA12 of less than or equal to 10% by weight relative to the total weight of (co)polyamide present in the composition.