This invention relates to a process for the continuous extraction of polyamides, in which the residue of low molecular weight components left in the polyamide is very small. It also relates to a two-part extraction tube suitable for this purpose, in which the upper part is connected to the lower part...http://www.google.es/patents/US4978743?utm_source=gb-gplus-sharePatente US4978743 - Process for the continuous, counter flow/direct flow extraction of polyamides
Process for the continuous, counter flow/direct flow extraction of polyamides