Flocculating agent comprising water-in-oil emulsion of H-active

Details Flocculating agent comprising water-in-oil emulsion of H-active Flocculating agent comprising water-in-oil emulsion of H-active

1975-01-02

1978-06-06

Lieberman, Allan

Liquid purification or separation

With alarm, indicator, register, recorder, signal or...

Responsive to fluid flow

260 294UA, 260 296R, 260 72R, 08G 1206, B01D 2101, C08L 6132

Patent

active

040935426

ABSTRACT:
A flocculation, sedimentation, dehydration or retention composition comprising a dispersion of about 10 to 50% concentration by weight of a polymeric Mannich base in a mixture of water and a water-insoluble liquid, the Mannich base comprising an H-active polymer carrying radicals of a reaction with formaldehyde and a primary or secondary alkyl- or hydroxyalkylamine wherein the alkyl groups have up to about 18 carbon atoms. The amine is preferably dimethylamine or diethylamine and is used in approximately the same molar amount as the formaldehyde. The polymer preferably comprises acrylamide units and the polymerization may be effected either before or after reaction with the formaldehyde and amine.

REFERENCES:
patent: 2328901 (1943-09-01), Grimm et al.
patent: 3539535 (1970-11-01), Wisner
patent: 3790529 (1974-02-01), Fujimura et al.
patent: 3875097 (1975-04-01), Sedlak
patent: 4010131 (1977-03-01), Phillips et al.

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