Process for purifying an aqueous solution of acrylamide

Details Process for purifying an aqueous solution of acrylamide Process for purifying an aqueous solution of acrylamide

1981-06-02

1982-08-17

Demers, Arthur P.

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

Organic compounds

Amino nitrogen containing

C07C103133

Patent

active

043451012

ABSTRACT:
An aqueous solution of acrylamide obtained by catalytic hydration of acrylonitrile in the presence of a copper-based catalyst is purified by the steps, in sequence, of (a) removal of the unreacted acrylonitrile, (b) removal of copper, (c) treatment under basic conditions, (d) cation exchanging treatment and (e) weakly basic anion exchanging treatment. The acrylamide obtained by this process has good storage stability. An acrylamide polymer produced from this monomer is useful as a flocculant having a reduced content of the unreacted monomer, a high molecular weight and excellent solubility in water.

REFERENCES:
patent: 2865960 (1958-12-01), Shearer et al.
patent: 3941837 (1976-02-01), Asano et al.
patent: 4032572 (1977-06-01), Asano et al.
patent: 4108893 (1978-08-01), Asano et al.
patent: 4302600 (1981-11-01), Saitoh etal.

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