Preparation of 2,2'-azobis(2-methylpropionitrile)

Details Preparation of 2,2'-azobis(2-methylpropionitrile) Preparation of 2,2'-azobis(2-methylpropionitrile)

1979-05-01

1981-02-24

Shaver, Paul F.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C10700

Patent

active

042527171

ABSTRACT:
2,2'-Azobis(2-methylpropionitrile), which is used as a foaming agent and a radical polymerization initiator, is produced in a high yield and a high purity, by (1) subjecting a crude 2-amino-2-methylpropionitrile product obtained by the reaction between acetone cyanohydrin and ammonia, to reduced pressure distillation, (2) contacting the resulting purified 2-amino-2-methylpropionitrile product having an ammonia content of 1.5% by weight or less with an aqueous metal hypochlorite solution, and then (3) treating the resulting aqueous suspension of 2,2'-azobis(2-methylpropionitrile) with a reducing agent.

REFERENCES:
patent: 2711405 (1955-06-01), Anderson
patent: 2713576 (1955-07-01), DeBenneville
patent: 3390146 (1968-06-01), Nield et al.
patent: 3937696 (1976-02-01), Knowles et al.
patent: 3987025 (1976-10-01), Moore
patent: 4051124 (1977-09-01), Moore
patent: 4061590 (1977-12-01), Moore

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