Water treatment method

Details Water treatment method Water treatment method

1982-06-21

1983-08-09

Hruskoci, Peter A.

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

C02F 156

Patent

active

043977430

ABSTRACT:
A method of water treatment to cause flocculation of immiscible material in aqueous suspension, which comprises applying to the water a quaternary ammonium polymer having the formula ##STR1## wherein R' and R" may be the same or different alkyl groups of from 1 to 18 carbon atoms, optionally substituted by from 1 to 2 hydroxyl groups or, when taken together, with N form a saturated or unsaturated ring of from 5 to 7 atoms, or when taken together with N and an oxygen atom form the N-morpholino group; wherein Z is --CH.sub.2 CH.dbd.CHCH.sub.2 -- when Z' is --CH.sub.2 CHOHCH.sub.2 -- or Z is --CH.sub.2 CHOHCH.sub.2 -- when Z' is --CH.sub.2 CH.dbd.CHCH.sub.2 --; wherein X is a halogen of atomic weight greater than 30; wherein Y and Y' may be either the same or different and may be either X or --NR'R" and wherein n is an integer of from 2 to 20.

REFERENCES:
patent: 3931319 (1976-01-01), Green et al.
patent: 3966904 (1976-06-01), Green et al.
patent: 4027020 (1977-05-01), Green et al.
patent: 4188293 (1980-02-01), Green et al.
patent: 4197865 (1980-04-01), Jacquet et al.
patent: 4304910 (1981-01-01), Green et al.
patent: 4305829 (1981-12-01), Kelsey et al.
patent: 4325940 (1982-04-01), Green et al.

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