Bioactive protein-polymer compositions for stain removal
AssigneesToyota Motor Corporation, Regents of the University of Minnesota
InventorsAndreas Buthe, Ping Wang, Songtao Wu, Hongfei Jia, Masahiko Ishii, Minjuan Zhang
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Abstract
Bioactive coatings that include a base and a protein associated with the base for actively promoting the removal of organic stains are provided. In aspects, bioactive coatings that are stabilized against inactivation by weathering are provided including a base associated with a chemically modified enzyme, and, optionally a first polyoxyethylene present in the base and independent of the enzyme. The coatings are optionally overlayered onto a substrate to form an active coating facilitating the removal of organic stains or organic material from food, insects, or the environment.
Claims16
A protein-polymer composition for removal of an organic stain from a substrate or coating, the composition comprising:
- a substrate or coating formed of a two-component solvent-borne crosslinked polymer resin;
- and
- a lipase, said lipase dispersed in said substrate or coating in aggregates having an average diameter of 1 nanometer to 10 micrometers;
- wherein said lipase is entrapped within and crosslinked to said substrate or coating.
A composition for removal of an organic stain from a substrate or coating, the composition comprising:
- a substrate or coating formed of an organic crosslinkable polymer resin;
- and
- a lipase capable of enzymatically degrading a component of an organic stain, said lipase associated with said substrate or coating;
- wherein said lipase is uniformly dispersed in said substrate or coating in protein aggregates having an average diameter of 10 micrometers or less;
- wherein said lipase has an activity of at least 200 Units/gram.
Dependencies are inferred from the claim text.