Quaternary aminomethyl acrylamide polymer microemulsions, methods of their preparation and their use

摘要

Quaternized aminomethyl acrylamide polymer emulsions are treated by 1) adjusting the pH to about 3.6 to about 4.8, 2) adding a formaldehyde scavenger, 3) adjusting the water content of the aqueous phase to result in about 10-45 weight percent of quaternized aminomethylated acrylamide polymer and 4) heating the resultant emulsion at from about 4O DEG C to about 80 DEG C for about 3 to about 20 hours so as to render them more stable, capable of inversion in water independent of water temperature or pH of the medium flocculant and superior dewatering ability. The quaternized aminomethyl acrylamide polymer emulsions are especially useful as flocculating agent for suspended solids.