Preparation of a manniched polyacrylamide quarternaries thereof

Details Preparation of a manniched polyacrylamide quarternaries thereof Preparation of a manniched polyacrylamide quarternaries thereof

1976-07-16

1977-09-20

Pertilla, Theodore E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 72R, C08L 6120

Patent

active

040496066

ABSTRACT:
Cationically modified polymers of acrylamide are prepared by adding to a polyacrylamide an aqueous solution of a lower aliphatic aldehyde followed by a lower alkyl secondary amine. The pH of the dilute solution of the acrylamide polymer which is reacted is adjusted prior to addition of the aldehyde to between 4.5 and 5.5 thereby conducting this reaction at an acidic pH. Additionally, quaternized polymers may be prepared by adding to the cationically modified polyacrylamide a lower alkyl halide quaternizing agent. The pH of the solution of the cationically modified acrylamide polymer prior to quaternization should be 7.5-8.5.

REFERENCES:
patent: 2328901 (1943-09-01), Grimm
patent: 3323979 (1967-06-01), Foster et al.
patent: 3539535 (1970-11-01), Wisner
patent: 3830655 (1974-08-01), Rothwell

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