Method of manufacture of particles of thermoplastic polymer based on polyamide in the presence of the supercritical co2

摘要

The invention relates to a method for transforming a polyamide thermoplastic polymer, which includes: a step of extruding the polymer in the presence of supercritical CO2, in which the weight ratio of CO2SC relative to the polymer during the extrusion step is 25 wt % to 500 wt %; and a step of comminuting the extruded polymer and recovering the polymer in particle form.