Hydrophobic polyelectrolytes used in color removal
AssigneeNalco Chemical Company
InventorsManian Ramesh, Chandrashekar S. Shetty, Martha R. Finck
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Abstract
A hydrophobic polyelectrolyte copolymer which is useful in the removal of color in paper mill waste water. The copolymer preferably comprises an acrylamide and a hydrophobic monomer selected from the group consisting of quaternized dimethylaminoethylacrylates and quaternized dimethylaminoethylmethacrylates.
Claims6
A method for removing color bodies from a paper mill waste effluent which comprises the step of adding an effective amount of a hydrophobic polyelectrolyte copolymer to said effluent to flocculate said color bodies, said hydrophobic polyelectrolyte copolymer being formed from a mixture consisting of an acrylamide, a hydrophobic monomer selected from the group consisting of:
- dialkylaminoalkylacrylates having C8 to C20 quaternaries and dialkylaminoalkylmethacrylates having C8 to C20 quaternaries, water and a polymer initiator, and removing the flocculated color bodies from the effluent.
Dependencies are inferred from the claim text.