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Sulphated ion exchanger and method for preparation thereof

  • US 4,178,439 A
  • Filed: 03/01/1977
  • Issued: 12/11/1979
  • Est. Priority Date: 03/04/1976
  • Status: Expired due to Term
First Claim
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1. A cationic ion exchanger comprising a water insoluble hydrophilic, water swellable matrix;

  • a plurality of sulphate groups chemically bonded to said matrix, the ion exchange capacity of said exchanger being provided by said sulphate groups;

    said matrix being a member selected from the group consisting of;

    (a) a cross-linked carbohydrate, and,(b) a cross-linked carbohydrate having a plurality of hydroxy Ca -C4 alkyl groups chemically bonded thereto.

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