Modification of acrylamide polymers

Details Modification of acrylamide polymers Modification of acrylamide polymers

1980-11-28

1982-02-02

Levin, Stanford M.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 334R, 525 1, 525336, C08L 3326

Patent

active

043138632

ABSTRACT:
When an alkaline substance is added to and mixed with aggregates of the mutually adhering blobs of a hydrogel of an acrylamide polymer, (1) a mixing tank in which the portion to be contacted with the hydrogel of an acrylamide polymer is made of a chromium-plated material is used, and (2) to said hydrogel aggregates is added at least one compound represented by the general formulae: ##STR1## wherein R.sub.1 is a residue obtained by removing two OH groups from a saturated dihydric alcohol having 2 to 4 carbon atoms, and R.sub.2 is a residue obtained by removing three OH groups from a saturated trihydric alcohol having 3 to 6 carbon atoms, and having an average molecular weight of 500 to 5,000, whereby the hydrolysis of the acrylamide polymer can be achieved at a high efficiency while preventing the mutual adhesion of the hydrogel aggregates and also reducing the adhesion of the aggregates to the interior surface of the mixing tank to such an extent that there is substantially no problem of adhesion.

REFERENCES:
patent: 3784597 (1974-01-01), Fujimoto et al.
patent: 3817891 (1974-06-01), Keas
patent: 4146690 (1979-03-01), Tago et al.

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