Production in continuous of oxamide for the catalytic oxidation

Details Production in continuous of oxamide for the catalytic oxidation Production in continuous of oxamide for the catalytic oxidation

1995-02-10

1996-01-30

Kumar, Shailendra

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

Organic compounds

Amino nitrogen containing

564160, C07C23100

Patent

active

054881587

ABSTRACT:
A continuous process for the production of oxamide is based on the catalytic oxidation of hydrogen cyanide with oxygen or air in a strong excess in a solution of copper nitrate in water-acetic acid.
The process is carried out in a vertical tubular reactor, with continuous recycling of part of the suspension of oxamides from the bottom to the top of the reactor.

REFERENCES:
patent: 3937732 (1976-02-01), Uchida et al.
patent: 3989753 (1976-11-01), Riemenschneider et al.
patent: 4978786 (1990-12-01), Messina et al.
Soviet Patent Abstracts, Jan. 22, 1992, Derwent Publications Ltd., AN 91-351568/48, SU-A-1 616 897, Dec. 30, 1990.
Soviet Patent Abstracts, Oct. 7, 1992, Derwent Publications Ltd., AN 92 282991/34, SU-A-1 691 362, Nov. 15, 1991.
Patent Abstracts of Japan, vol. 8, No. 130 (C-229), Jun. 16, 1984, JP-A-59 039 858, Mar. 5, 1984.

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