Water soluble chain transfer agents
AssigneeThe Lubrizol Corporation
InventorsCory G. Miller, Hyungsoo Kim
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Abstract
The disclosed technology relates to water soluble, or partially water soluble, chain transfer agents for preparing water soluble polymers by Reversible Addition-Fragmentation Chain Transfer (“RAFT”) polymerization in an aqueous medium.
Claims14
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A method of chelating ions of hardness from an aqueous medium comprising adding to an aqueous medium a water soluble polymer comprising (A) at least one water soluble Chain Transfer Agent (“CTA”)-acid or CTA-acid salt and combinations thereof, (B) monomer units derived from at least one water soluble monomer, and optionally (C) monomer units derived from at least one water insoluble vinyl monomer.
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Dependencies are inferred from the claim text.