Process for the preparation of iminodiacetonitrile and iminodiac

Details Process for the preparation of iminodiacetonitrile and iminodiac Process for the preparation of iminodiacetonitrile and iminodiac

1989-08-14

1990-08-14

Brust, Joseph Paul

Organic compounds -- part of the class 532-570 series

Organic compounds

Nitriles

562571, C07C25330

Patent

active

049489097

ABSTRACT:
An improved process is provided for producing iminodiacetonitrile by contacting ammonia, formaldehyde and hydrogen cyanide, or hexamethylenetetramine, formaldehyde and hydrogen cyanide in a reaction medium, the improvement which comprises the further steps of thereafter adjusting the pH of the reaction medium to a pH between about 5.5 and about pH 10 and heating the reaction medium to an elevated temperature for a sufficient time to convert by-products in the reaction medium to iminodiacetonitrile.

REFERENCES:
patent: H4 (1985-12-01), Cullen
patent: 3886198 (1975-05-01), Philbrook et al.
patent: 3988360 (1976-10-01), Gaudette et al.
patent: 4307037 (1981-12-01), Suchsland et al.
patent: 4661614 (1987-04-01), Most et al.

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