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Gel-free paint containing zinc pyrithione, cuprous oxide, and amine treated rosin

  • US 5,298,061 A
  • Filed: 05/14/1993
  • Issued: 03/29/1994
  • Est. Priority Date: 05/14/1993
  • Status: Expired due to Term
First Claim
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1. A paint or paint base composition characterized by enhanced biocidal efficacy and gelation resistance wherein the paint or paint base contains a biocide consisting essentially of cuprous oxide and zinc pyrithione, said zinc pyrithione being present in an amount of between about 1% and about 25%, and said cuprous oxide being present in an amount of between about 20% and about 70%, wherein the total amount of said zinc pyrithione plus said cuprous oxide is between about 20% and about 80%, based upon the total weight of the paint or paint base composition, wherein the paint or paint base additionally contains rosin amine or rosin amide in an amount sufficient to stabilize said paint or paint base against gelation, and wherein the amount of said rosin amine or rosin amide is between about 1% and 20% based upon the total weight of the paint or paint base composition.

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