Multivalent polymers for clay aggregation
AssigneeBASF SE
InventorEdwin T. Sortwell
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Abstract
The disclosure relates generally to the use of polymers to assist in aggregating mineral components in aqueous mineral slurries to release and separate individual components of the slurry, which may then be recovered from the slurry.
Claims21
A polymer comprising a water-soluble multivalent cation-containing acrylate copolymer wherein the polymer has an intrinsic viscosity of at least 3 dl/gm and a molecular weight of at least four million, wherein the multivalent cations are selected from the group consisting of calcium, magnesium, iron, and aluminum.
A polymer comprising a water-soluble multivalent cation-containing acrylate/acrylamide copolymer wherein the polymer has an intrinsic viscosity of at least 3 dl/gm and a molecular weight of at least four million.
A polymer comprising a water-soluble multivalent cation-containing diacrylate/acrylamide copolymer wherein the polymer has an intrinsic viscosity of at least 3 dl/gm and a molecular weight of at least four million.
Dependencies are inferred from the claim text.