Protonated mannich polymers

Details Protonated mannich polymers Protonated mannich polymers

B - Operations, Transporting

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B01D 17/00 (2006.01) C02F 1/52 (2006.01) C02F 1/54 (2006.01) C08F 8/32 (2006.01)

Patent

CA 2035467

PROTONATED MANNICH POLYMERS ABSTRACT Aqueous concentrates useful for the treatment of wastewaters and the like are formed by acidifying aminomethylated flocculants (Mannich polymers) prepared from acrylamide-containing polymers, secondary amines and formaldehyde to a pH of less than about 4.5 to render the aminomethylated flocculants more stable and lessen their tendency to undergo reversion. The protonated concentrates have a solids content in excess of one percent (1%) and are formed by the rapid addition of the acid component to the Mannich polymer. A preferred acid component comprises a mixture of an organic acid and mineral acid.

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