Ampholytic polymers and polymeric microemulsions
AssigneeCytec Technology Corp.
InventorsMichael S. Ryan, David L. Dauplaise, Robert J. Proverb
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Abstract
Quatemary dialkylaminomethyl polymers derived from (alk)acrylamide and about 1 to about 15 mole percent ethylenically unsaturated anionic comonomer wherein the resulting ampholytic polymer has a standard viscosity of at least about 2.1 cps am disclosed. Processes for the preparation of these polymers and their use in flocculating suspended material in a variety of aqueous dispersions are also disclosed.
Claims11
A method of flocculating suspended solids in an aqueous dispersion which comprises treating said dispersion with an effective amount of a microemulsion or a dilute aqueous solution, said microemulsion or dilute aqueous solution comprising a copolymer of (alk)acrylamide and at least one ethylenically unsaturated anionic comonomer, wherein said (alk)acrylamide is substituted with quaternary dialkyl aminomethyl groups;
- said anionic comonomer is present in an amount ranging from about 1 to 15 mole percent;
- and
- said copolymer has a standard viscosity of at least about 2.1 cps when measured at 0.1 percent concentration in a 1 molar sodium chloride solution and said copolymer having been derived from microemulsion polymerization.
Dependencies are inferred from the claim text.