Process for the manufacture of polyamide from dinitrile and diam

Details Process for the manufacture of polyamide from dinitrile and diam Process for the manufacture of polyamide from dinitrile and diam

1986-11-03

1988-06-07

Anderson, Harold D.

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

Synthetic resins

From carboxylic acid or derivative thereof

528312, 528313, 528319, C08G 6900

Patent

active

047497769

ABSTRACT:
The process for manufacturing a nylon-type polyamide from a dinitrile, a diamine and water in the presence of a catalyst is improved by using as a catalyst an ester of oxygenated phosphorus compound in conjunction with a strong base. For example, high quality nylon-6,6 is manufactured by contacting adiponitrile, hexamethylene diamine and water with an ester of an oxygenated phosphorous compound and sodium hydroxide at an elevated temperature and pressure.

REFERENCES:
patent: 4436898 (1984-03-01), Hofmann et al.
patent: 4528362 (1985-07-01), Hofmann et al.
patent: 4542205 (1985-09-01), Curatolo et al.

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