Quaternary ammonium graft copolymers for use as flocculants and

Chemistry of carbon compounds – Miscellaneous organic carbon compounds

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260 18PF, 424 78, 525523, 525529, 528407, 544358, 564290, 564295, C08L 6300, C02B 156

Patent

active

042710537

ABSTRACT:
This invention relates to quaternary ammonium graft copolymers comprised of polymeric units characterized by the general formula: ##STR1## wherein n, y and z represent the relative molar equivalent fractions of each of the respective polymeric units in the graft copolymer, the sum of n, y and z being 1.0, the value of n varying from 0.00 to 0.99, the value of y varying from 0.00 to 0.99 and the value of z varying from 0.01 to 0.99; q is an integer greater than 1; A is the unit derived from at least one difunctional amine selected from the group consisting of primary amines and di(secondary)amines; t is an integer varying from 1 to 2; E is the unit obtained from a compound selected from the group consisting of epihalohydrins and diepoxides after its reaction with said difunctional amine; R is an organic radical derived from a quaternizing agent having the general formula RX, where X is the residual counter ion formed after quaternization; B is the unit derived from an organic dihalide having the general formula BY.sub.2, where Y is Cl.sup.-,Br.sup.- or I.sup.- with the proviso that such halogens are not attached to the same carbon atom; and C is the unit derived from an organic di(tertiary)amine after its reaction with said organic dihalide.
There is also described herein processes for the manufacture and use of such graft copolymers.

REFERENCES:
patent: Re28807 (1976-05-01), Panzer et al.
patent: 3567659 (1971-03-01), Nagy
patent: 3632507 (1972-01-01), Witt
patent: 3663461 (1972-05-01), Witt
patent: 3725312 (1973-04-01), Panzer et al.
patent: 3778476 (1973-12-01), Rembaum et al.
patent: 3898188 (1975-08-01), Rembaum et al.
patent: 3917817 (1975-11-01), Vanderberghe et al.
patent: 3927242 (1975-12-01), Rembaum et al.
patent: 3928448 (1975-12-01), Ballweber et al.
patent: 4054542 (1977-10-01), Buckmann
Chem. Abstract, vol. 80, No. 22, 6/1974, p. 100 (135058X).

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