Alcohol-soluble environment-friendly printing ink and preparation method thereof

Abstract

The application relates to the technical field of printing ink, and discloses an alcohol-soluble environment-friendly printing ink and a preparation method thereof. The alcohol-soluble environment-friendly printing ink contains organic fluorine with a unique chemical structure. During a film forming process, fluorine elements preferentially migrate to the outer surface, causing the enrichment of fluorine elements on the surface of the coating film. The C-F bond with hydrophobic and oleophobic properties can form a very thin molecular layer on the surface of the material, thereby enhancing the waterproofness of the prepared composite ink. Meanwhile, the waterproof and steam-resistant polyurethane resin contains imide groups which are very stable and resistant to high temperature, and the polar force between the molecular chains is very strong, so the polyurethane can be applied to occasions with high temperature sterilization, environmental protection and health, and high temperature requirements. The polyurethane is soluble in ethanol, the isocyanate groups can also react with the hydroxyl groups of ethanol, the possibility of toxicity in the use process is reduced, and the application range of the alcohol-soluble printing ink is further widened.

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