Quaternized tertiary aminomethyl acrylamide polymer microemulsio

Details Quaternized tertiary aminomethyl acrylamide polymer microemulsio Quaternized tertiary aminomethyl acrylamide polymer microemulsio

1995-05-23

1997-09-23

Merriam, Andrew E. C.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Treating polymer containing material or treating a solid...

528492, 210734, 210735, 524521, 524555, 524922, C08F12060, C02F 156

Patent

active

056706154

ABSTRACT:
Quaternized tertiary 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 40.degree. C. to about 80.degree. 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.

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