Process for the manufacture of polyamides utilizing a mixture of

Details Process for the manufacture of polyamides utilizing a mixture of Process for the manufacture of polyamides utilizing a mixture of

1984-09-17

1985-09-17

Anderson, Harold D.

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

Synthetic resins

From carboxylic acid or derivative thereof

528337, 528344, 528345, 528346, C08G 6900

Patent

active

045422052

ABSTRACT:
The process for manufacturing a nylon-type polyamide from a dinitrile, a diamine, water and a catalyst is improved by using as a catalyst an oxygenated phosphorus compound and a molybdate compound. For example, high quality nylon-6,6 is manufactured by contacting adiponitrile, hexamethylene diamine, water with disodium phosphite and sodium molybdate at an elevated temperature and pressure.

REFERENCES:
patent: 2245129 (1941-06-01), Greenewalt
patent: 4490521 (1984-12-01), Coffey et al.

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