Patent ID: 9688823
Date: 2017-06-27
CPC Classifications: C08G,C08J,C08L

Claim:
1. A process for the melt preparation of a copolyamide comprising at least one aliphatic block originating from an aliphatic polyamide and at least one semi-aromatic block originating from a semi-aromatic polyamide, said process comprising: mixing at least one aliphatic polyamide and at least one semi-aromatic polyamide, wherein the semi-aromatic polyamide comprises repeating units originating from at least one aromatic diacid comprising a hydroxy and/or sulfonate function or repeating units originating from at least one aromatic diamine comprising a hydroxy and/or sulfonate function, said polyamides being terminated with functions that are capable of reacting together, heating the mixture so that the polyamides are molten and a polycondensation reaction can take place between the polyamides, recovering the copolyamide comprising the at least one aliphatic block and the at least one semi-aromatic block.