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

US12060497B2 · kind B2 · utility

Assignees

• Toyota Motor Corporation · JP
• Regents of the University of Minnesota · US

Inventors

• Hongfei Jia · Ann Arbor, US
• Ping Wang · North Oaks, US
• Liting Zhang · Yongchun County, CN
• Andreas Buthe · Steinfurt, DE
• Xueyan Zhao · Beijing, CN
• Songtao Wu · Ann Arbor, US
• Masahiko Ishii · Okazaki, JP
• Minjuan Zhang · Ann Arbor, US

Key dates

• Filing date: Jun 16, 2020
• Grant date: Aug 13, 2024
• Expiry date: Aug 30, 2042

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L2205/02
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

Bioactive coatings that are stabilized against inactivation by weathering are provided including a base associated with a chemically modified enzyme capable of enzymatically degrading a component of an organic stain, optionally a lipase or a lysozyme, 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 bacterial organic material.