Preparation method of a convenient sprayable antibacterial transparent coating

Through the spraying method of Ag element, Co element, tannin acid and polyvinylpyrrolidone mixture, the existing antibacterial coating preparation problems are solved, and an efficient, transparent and durable antibacterial coating at low temperatures is achieved, simplifying the preparation process and avoiding the use of toxic solvents.

CN119081496BActive Publication Date: 2025-07-22SECOND MEDICAL CENT OF CHINESE PLA GENERAL HOSPITAL
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Patent Information

Application Number
CN202411271578.0
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-09-11
Publication Date
2025-07-22
Estimated Expiration
2044-09-11

AI Technical Summary

Technical Problem

The existing antibacterial coating preparation process is complex, involving toxic solvents, limiting its large-scale application, and the coating transparency and antibacterial effect are poor.

Method used

Ag element, Co element, tannin and polyvinylpyrrolidone mixture is used, with a pH of 5-9. An antibacterial transparent coating is formed on the surface of the object by spraying to avoid drying and curing process, and a uniform and dense three-dimensional grid structure is formed to ensure the sustained release of antibacterial metals.

Benefits of technology

It realizes the formation of a transparent and efficient antibacterial coating under low temperature conditions, simplifies the preparation process, avoids the use of toxic solvents, maintains good antibacterial properties and transparency, and improves the adhesion and durability of the coating.

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Abstract

A mixed solution of an antibacterial spraying composition, which is formed by including Ag element, Co element, tannic acid and polyvinylpyrrolidone, and the pH of the mixed solution is 5-9. The mass ratio of tannic acid to polyvinylpyrrolidone is 1:(2.5-4). This method uses safe and non-toxic tannic acid and polyvinylpyrrolidone as molding reagents, combines silver ions with high-efficiency bactericidal properties, and forms an antibacterial transparent coating on the surface of an object through a one-step spraying process. The present invention avoids the problems of complex existing coating preparation processes and the involvement of toxic solvents, and provides effective antibacterial protection for the surfaces of easily infected objects.
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Citation Information

Patent Citations

  • Low-temperature synthesis method of long-acting self-disinfection coating

    CN117844274A

  • Antiviral composition and member having same on surface

    WO2023234239A1