Antibacterial and antiviral coating film containing supramolecular sol comprising polyphenol-based compound and trivalent iron salt

Patent metadata

Field	Value
Publication number	US-2026041090-A1
Application number	US-202519360261-A
Country	US
Kind code	A1
Filing date	Oct 16, 2025
Priority date	May 19, 2023
Publication date	Feb 12, 2026
Grant date	—

Abstract

Proposed is a one-component antibacterial and antiviral coating composition capable of killing various pathogenic microorganisms or preventing infection caused thereby. The coating composition can be sprayed onto a substrate, regardless of the physical properties of the substrate, to achieve a microbicidal effect that inactivates various pathogenic microorganisms. In addition, a coating method disclosed herein is excellent in terms of convenience and economic feasibility, and thus can be widely applied to disinfection and disease-preventive methods for various facilities such as greenhouses, livestock barns, and poultry farms, as well as household goods.

First claim

What is claimed is:

1 . An antibacterial and antiviral coating composition effective against microorganisms and viruses, the coating composition comprising:
a supramolecular sol comprising a polyphenol-based compound and a trivalent iron salt; and water, wherein the trivalent iron salt is included in an amount of 2 moles or more with respect to 1 mole of the polyphenol-based compound, and the polyphenol-based compound is included at a concentration in a range of 2 to 50 mM.

2 . The coating composition of claim 1 , wherein the trivalent iron salt is included at a concentration in a range of 20 to 200 mM.

3 . The coating composition of claim 1 , wherein the polyphenol-based compound is tannic acid.

4 . The coating composition of claim 1 , wherein the trivalent iron salt comprises a combination of one or more selected from the group consisting of ferric sulfate, ferric chloride, ferric nitrate, and hydrates thereof.

5 . The coating composition of claim 1 , wherein the microorganisms comprise a combination of one or more selected from the group consisting of Escherichia coli, Salmonella typhimurium, Staphylococcus aureus, Acinetobacter baumannii, Pleurotus ostreatus , and Trichophyton rubrum.

6 . The coating composition of claim 1 , wherein the viruses comprise a combination of one or more selected from the group consisting of influenza A virus, severe acute respiratory syndrome coronavirus 2 (SARS-COV-2), and human rhinovirus.

7 . The coating composition of claim 1 , wherein the composition is a one-component composition and is sprayed through a single nozzle to form a coating film on a substrate.

8 . An antibacterial and antiviral coating film formed from the coating composition of claim 1 .

9 . The coating film of claim 8 , wherein the coating film is formed by curing the coating composition sprayed in air on a substrate.

Assignees

• Hansol Rootone Agricultural Corp Co Ltd
• Korea Advanced Inst Sci & Tech

Inventors

• Hwang Hansol
• Choi Insung
• Han Sangyeong
• Yun Gyeongwon

Classifications

• A01P1/00

  Disinfectants; Antimicrobial compounds or mixtures thereof · CPC title

• A01N59/16

  Heavy metals; Compounds thereof · CPC title

• A01N25/10

  Macromolecular compounds · CPC title

• A01N25/04 Primary

  Dispersions, {emulsions, suspoemulsions, suspension concentrates} or gels (foams A01N25/16) · CPC title

• A01N25/02

  containing liquids as carriers, diluents or solvents · CPC title