Method for producing spinnable polyamides, etc.

Details Method for producing spinnable polyamides, etc. Method for producing spinnable polyamides, etc.

C - Chemistry, Metallurgy

08

G

402/223

C08G 69/00 (2006.01) C08G 69/04 (2006.01) C08G 69/28 (2006.01)

Patent

CA 1186444

ABSTRACT Production of spinnable polyhexamethylene adipamide of high molecular weight from adiponitrile, hexamethylene diamine, water and additives, preferably continuously in a reaction cascade and in a finisher as the final stage, catalytically accelerated by catalysts as disclosed. It has now been discovered that polyamides can be produced from dinitriles, diamines and excess water in the presence of catalysts selected from the group consisting of: (1) oxygen- containing phosphorous compounds; (2) oxygen-containing boron compounds; (3) acidic oxygen-containing sulfur compounds; and (4) hydrogen halide and ammonium or ammonium alkyl salt thereof.

402811

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