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Method and element for controlling release of a disinfectant from a substrate

  • US 5,421,898 A
  • Filed: 02/21/1992
  • Issued: 06/06/1995
  • Est. Priority Date: 02/21/1992
  • Status: Expired due to Term
First Claim
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1. An element for controlling the release of a quaternary disinfectant in aqueous solutions comprising a substrate coated with the residue of an aqueous composition of both a) a water soluble polymer and b) a quaternary ammonium disinfectant characterized in that the water soluble polymer has weight average molecular weight of 85,000 to 186,000 and a degree of hydrolysis of 87 to 89 percent.

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