Method for producing spinnable polyamide from dinitrile with pho

Details Method for producing spinnable polyamide from dinitrile with pho Method for producing spinnable polyamide from dinitrile with pho

1984-01-17

1985-07-09

Anderson, Harold D.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From carboxylic acid or derivative thereof

528337, C08G 6928

Patent

active

045283621

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.
The polyamides can be produced from dinitriles, diamines and excess water in the presence of catalysts selected from the group consisting of: alkyl, aryl and alkyl/aryl esters of phosphoric, phosphorous, phosphonic and phosphinic acids. The catalyst is present in the amount of 0.001 to 1.0% based upon the total weight of the reactants.

REFERENCES:
patent: 4436898 (1984-03-01), Hofmann et al.

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