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Polychelants

  • US 6,274,713 B1
  • Filed: 06/07/1995
  • Issued: 08/14/2001
  • Est. Priority Date: 04/07/1989
  • Status: Expired due to Fees
First Claim
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1. A polychelant compound comprising a backbone moiety to which is covalently bonded at least 20 macrocyclic chelant moieties, wherein the backbone moiety contains one or more amino groups;

  • each macrocyclic chelant moiety is capable of complexing metal ions;

    each macrocyclic chelant moiety contains a donor atom; and

    each macrocyclic chelant moiety is linked to said backbone moiety via a thiourea, an urea, or a glycinamide linkage bonded to the donor atom;

    or a metal chelate or a salt thereof.

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