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US 8,911,986 B2Granted
Coatings containing polymer modified enzyme for stable self-cleaning of organic stains
AssigneesToyota Motor Engineering & Manufacturing North America, Inc., Toyota Motor Corporation
InventorsHongfei Jia, Songtao Wu, Masahiko Ishii, Minjuan Zhang
Life of this patent
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Abstract
Temporary active 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.
Claims11
An enzymatic cleaning composition comprising:
- a base material selected from the group consisting of paraffin wax, microcrystalline wax, petroleum wax, carnuba wax, candeilla vegetable wax, montan coal derived wax, dimethylsilicones, and aminofunctional silicones;
- a first polyoxyethylene covalently bound to an enzyme;
- and a second polyoxyethylene which is unmodified.
Dependencies are inferred from the claim text.