Composite ion exchange resins having low residual amounts of quaternary ammonium cation
AssigneeThe Dow Chemical Company
InventorRobert M. Wheaton
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Abstract
Improved composite ion exchange resin bodies comprising a reaction product of an ingredient containing carboxylate anions polymerized within a strong base anion exchange resin, said resin bodies having low residual amounts of quaternary ammonium cation not intimately associated with said carboxylate anions to minimize inorganic chloride and chlorate anion leakage in ion exchange column operation.
Claims8
A solid, composite ion exchange resin which comprises at least two intimately associated resin ingredients, including an insoluble, cross-linked resin ingredient which contains quaternary ammonium cations as anion-exchanging groups, and a polymerized ingredient which contains ionizable carboxylate anions as cation-exchanging groups, residual amounts of quaternary ammonium cation not intimately associated with said carboxylate anions in said composite resin bodies being maintained at about or below 0.02 meq/ml of bulk resin body volume.
Dependencies are inferred from the claim text.