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Coatings containing polymer modified enzyme for stable self-cleaning of organic stains

  • US 10,563,094 B2
  • Filed: 07/29/2015
  • Issued: 02/18/2020
  • Est. Priority Date: 09/09/2011
  • Status: Active Grant
First Claim
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1. A water-stabilized active coating composition comprising:

  • a polyurethane base in the form of a continuous film, the base formed from a two component solvent borne composition;

    a chemically modified enzyme dispersed within said base, said enzyme being covalently modified with one or more molecules of a first polyoxyethylene,wherein said enzyme is dispersed in said base as aggregates of said chemically modified enzyme, said aggregates having an average particle diameter of up to 5 micrometers,wherein said aggregates are formed by adding a solution of said chemically modified enzyme to the two component solvent borne composition prior to formation of the continuous film, and allowing the chemically modified enzyme molecules to aggregate together to form the aggregates.

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