Anti-fog coating composition, anti-fog thin film and product

Abstract

The invention provides an anti-fog coating composition which comprises at least one hydrophilic polymer; at least one anionic surfactant which accounts for 0.5% by weight-25% by weight calculated by taking the weight of the polymer as 100% by weight; inorganic oxide particles which account for 0% by weight-60% by weight calculated by taking the weight of the polymer as 100% by weight; and a solvent, wherein the polymer is at least one selected from cellulose, polyvinylpyrrolidone, polyacrylic acid, polypropylene amide and polyvinyl alcohol. The invention further provides an anti-fog thin film, which comprises a substrate and a coating which is positioned on one part of the surface of at least one surface of the substrate and produced by the composition. The invention also provides a product comprising the anti-fog thin film, such as masks and glasses for medical operations, mine masks, food packaging boxes, food packaging bags and the like.

Description

Technical field:

[0001] The invention relates to an anti-fog coating composition, an anti-fog film and products, in particular to an anti-fog coating composition which is especially suitable for high-temperature and high-humidity environments, and an anti-fog coating comprising the coating made of the composition. Fog films and articles comprising the anti-fog films, such as medical surgical masks. Background technique

[0002] Plastic or inorganic transparent materials are often used in our daily life. A common problem of these materials is that their transparency will be greatly affected after fogging. For example, during the operation, if the fogging phenomenon on the surgical mask used by the doctor is serious, it will cause immeasurable consequences to the operation. In order to solve this problem, various anti-fog coatings have emerged.

[0003] The anti-fog property of the coating will decrease with the rise of temperature and humidity, especially the humidity has a...