Catalytic process for the manufacture of polyamides from diamine

Details Catalytic process for the manufacture of polyamides from diamine Catalytic process for the manufacture of polyamides from diamine

1984-12-03

1985-09-24

Anderson, Harold D.

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

Synthetic resins

From carboxylic acid or derivative thereof

528315, 528335, C08G 6900

Patent

active

045434077

ABSTRACT:
Nylon-type polyamides are produced from a diamine and a diamide in contact with an oxygenated phosphorus compound catalyst. For example, high quality nylon-6,6 is manufactured by contacting hexamethylenediamine and adipamide in water with an oxygenated phosphorus compound at an elevated temperature and pressure.

REFERENCES:
patent: 2223304 (1940-11-01), Lazier
patent: 2395642 (1946-02-01), Prichard
patent: 3770704 (1973-11-01), Dobinson
patent: 4436898 (1984-03-01), Hofmann et al.
patent: 4490521 (1984-12-01), Coffey et al.

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