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

US11566149B2 · 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: Jan 26, 2019
• Grant date: Jan 31, 2023
• Expiry date: Oct 26, 2040

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, 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.