Production of polyamides by reactive distillation

Details Production of polyamides by reactive distillation Production of polyamides by reactive distillation

C - Chemistry, Metallurgy

08

G

C08G 69/04 (2006.01) C08G 69/14 (2006.01) C08G 69/36 (2006.01)

Patent

CA 2321848

The invention relates to a method for producing polyamides, their oligomers or their mixtures, possibly with other reaction products, by reacting aminonitriles (A) and possibly other polyamide-forming monomers and/or oligomers with water (D) by reactive distillation. The reaction product (P) is extracted from the column bottom in the reactive distillation device and resulting ammonia (N), as well as possibly other resulting compounds having a low molecular weight, and water are withdrawn at the head of the column.

L'invention concerne un procédé de production de polyamides, de leurs oligomères ou de leurs mélanges, éventuellement avec d'autres produits de réaction. Ce procédé consiste à faire réagir des aminonitriles (A) et éventuellement d'autres monomères et/ou oligomères formant des polyamides, avec de l'eau (D) au moyen d'une distillation réactive, selon laquelle le produit de réaction (P) est évacué du fond de la colonne dans le dispositif de distillation réactive, puis l'ammoniac obtenu (N) et éventuellement d'autres composés obtenus, de faible poids moléculaire, ainsi que l'eau, sont extraits par la tête de la colonne de distillation.

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