Waterborne polyurethane for nail polish and preparation method thereof

By optimizing the film-forming process of waterborne polyurethane through a specific ratio of mixed polyols and functional monomers, the problems of low gloss and poor surface feel of waterborne polyurethane nail polish are solved, achieving high gloss and durability.

CN122344307APending Publication Date: 2026-07-07GUANGDONG VOCATIONAL & TECHNICAL COLLEGE +1
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Patent Information

Application Number
CN202610687572.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-05-19
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

Water-based polyurethane nail polish has low gloss and poor surface feel after film formation, and is easy to stick, which affects its appearance and durability, making it difficult to achieve the gloss and texture of traditional solvent-based nail polish.

Method used

By using a specific ratio of mixed polyols and functional monomers, including polycaprolactone diol, phthalic anhydride polyester polyol, polyether polyol, amino-type furanyl monomer and amino-type maleimide monomer, the film-forming process is optimized by controlling the crosslinking density and improving the coating performance, and by combining appropriate post-chain extenders such as castor oil.

Benefits of technology

It improves the gloss and surface hardness of water-based polyurethane nail polish, reduces surface stickiness, and enhances appearance quality and user experience.

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Abstract

The invention discloses waterborne polyurethane for nail polish and a preparation method of the waterborne polyurethane, and relates to the technical field of waterborne polyurethane. The water-based polyurethane for nail polish comprises mixed polyol, polyisocyanate, functional monomers, a hydrophilic agent, a post-chain extender and deionized water, the mixed polyol is a composition of polycaprolactone glycol, phthalic anhydride polyester polyol and polyether polyol, and the functional monomers comprise an amino furyl monomer and an amino maleimide monomer. According to the technical scheme, the glossiness and the surface hand feeling of the waterborne polyurethane after film forming can be effectively improved, and the appearance quality and the product value of the nail polish prepared from the waterborne polyurethane are improved.
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