Process for the hydrolysis of adiponitrile and the production of

Details Process for the hydrolysis of adiponitrile and the production of Process for the hydrolysis of adiponitrile and the production of

1998-12-22

2000-07-04

Hampton-Hightower, P.

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

Synthetic resins

From carboxylic acid or derivative thereof

528312, 528313, 528315, 528322, 528323, 528324, 528332, 528335, 528336, 528337, C08G 6928

Patent

active

060840560

ABSTRACT:
A process for the hydrolysis of a dinitrile (e.g., adiponitrile) utilizing from 0.1 to 500 mmoles of catalyst (e.g., a mixture of phosphorous acid and calcium hypophosphite) per mole of the dinitrile and in the presence of from 0.01 to 0.5 moles of a dicarboxylic acid cocatalyst (e.g., adipic acid) followed by addition of a diamine (e.g., hexamethylenediamine) and heating to produce polymerization. Such a process is particularly useful in the production of nylon 6,6 having a low BHMT content and improved melt stability.

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