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Removal of heavy metal ions from wine and wine-like beverages

  • US 5,094,867 A
  • Filed: 01/09/1991
  • Issued: 03/10/1992
  • Est. Priority Date: 01/16/1990
  • Status: Expired due to Term
First Claim
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1. A process for removing heavy metal ions from wine or wine made from drupes, pomes or berries, which comprises contacting, for not less than one minute, each 100 l of said wine or said wine made from drupes, pomes or berries with 5 to 250 g of a polymer which contains, as copolymerized units, from 50 to 99.5% by weight of at least one basic vinylheterocycle with a pKa of not less than 3.8, and from 0 to 49.5% by weight of another copolymerizable monomer and which has been prepared with the exclusion of oxygen and of polymerization initiators and in the presence of from 0.5 to 10% by weight, based on the monomers, of a crosslinker;

  • and then separating said polymer from said wine or said wine made from drupes, pomes or berries.

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