Auxiliary for improving retention, dewatering and working up, pa

Details Auxiliary for improving retention, dewatering and working up, pa Auxiliary for improving retention, dewatering and working up, pa

1979-10-15

1981-05-12

Smith, William F.

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

162164EP, 210705, 210928, 525430, D21H 352

Patent

active

042670594

ABSTRACT:
An auxiliary for improving the retention of flushable solids, for accelerating the dewatering of suspensions and for more rapidly working up industrial waters, effluents and sludges by the addition of a basic water-soluble polymer being produced by reacting (a) an aliphatic polyethylene glycol ether amine and (b) a basic polyamino amide to form an intermediate product and (c) reacting said intermediate with an epihalohydrin, dihaloalkane, glyoxal-bis-acrylamide, bis-acrylamidoacetic acid, acrylamidoglycolic acid or tetraalkyloxyethane.

REFERENCES:
patent: 3753931 (1973-08-01), Ruspanti
patent: 4036821 (1977-07-01), Hoppe et al.

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