Method of producing branched polyamides

Details Method of producing branched polyamides Method of producing branched polyamides

C - Chemistry, Metallurgy

08

G

C08G 69/16 (2006.01) C08G 69/02 (2006.01) C08G 69/28 (2006.01) C08G 69/36 (2006.01)

Patent

CA 2355847

The invention relates to a method of producing branched polyamides. The inventive method is characterized in that in a first reaction step suitable monomers such as caprolactam or an aliphatic aminocarboxylic acid are reacted with polyfunctional amines which contain at least one secondary amine group and/or with salts which contain such amines and dicarboxylic acids. The resulting reaction product is treated by a secondary solid phase condensation in a further reaction step.

L'invention concerne un procédé permettant de préparer des polyamides, qui se caractérise en ce que dans une première étape de réaction, des monomères appropriées, tels que du caprolactame ou un acide aminocarboxylique aliphatique sont mis à réagir avec des amines multifonctionnelles contenant au moins un groupe amino secondaire et/ou avec des sels contenant ce type d'amine et des acides dicarboxyliques. Le traitement du produit de réaction obtenu se poursuit au cours d'au moins une autre étape de réaction par post-condensation en phase solide.

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