A kind of water-based nail polish based on polydopamine-coated water-based polyurethane dispersion

Abstract

The invention discloses an aqueous nail polish based on a polydopamine-wrapped aqueous polyurethane dispersion. It is prepared by the following components in parts by weight: (a) 80-100 parts by weight of polydopamine-coated aqueous polyurethane dispersion; (b) 0.03-1 part by weight of leveling agent; (c) 0.03-1 part by weight (d) 0.03-1 weight part of brightener; (e) 0.03-1 weight part of drier; (f) 0.01-3 weight part of thickener; (g) 0.01-10 Pearlescent and / or color paste in parts by weight; (h) 0-3 parts by weight of auxiliary agents. The water-based nail polish has good quick-drying, gloss, hardness, adhesion, water resistance and other properties, and has no obvious dry and wet color difference.

Description

technical field [0001] The invention relates to an aqueous nail polish, in particular to an aqueous nail polish based on a polydopamine-coated aqueous polyurethane dispersion. Background technique [0002] Nail polish is a large category of products in the makeup series, which has the function of beautifying and modifying the nails. At present, the nail polishes used by people are divided into traditional solvent-based nail polishes and emerging water-based nail polishes. [0003] Traditional solvent-based nail polish contains a lot of irritating chemical ingredients, such as acetone, toluene, etc. These are harmful substances, which can easily dry, yellow, and brittle nails, affecting human health and causing environmental pollution. The principle that solvent-based nail polish adheres to the surface of the nail is to destroy the surface of the nail first, resulting in many rough holes on the surface, and the nail polish penetrates into the cavity. If it is used for a long...

AI Technical Summary

Problems solved by technology

However, the current water-based nail polish is not mature enough, and there are still some defects, such as poor gloss, poor water resistance, poor adhesion, and the surface of the nail polish will stick back after drying, etc., which cannot meet the needs of consumers.

[0004] Chinese patent CN104758196B discloses a method based on water-based polyurethane dispersion as water-based nail polish, which can provide fast-drying, high-gloss, high-volume water-based nail polish products, but the adhesion of this product relies on epoxy silane coupling coupling agent and aminosilane coupling agent, but practice shows that due to the extremely low content of the coupling agent in the nail polish formula, when the nail polish dries on the nail surface to form a film, the coupling agent cannot be used in the formula between nail polish and The nail surface is effectively enriched, and because the hydrophilic group of the coupling agent is distributed outward in the water-based formula, the part that needs to be connected to the nail surface faces inward, and the coupling agent cannot be on the nail surface during the drying process of the water-based nail polish. Therefore, the nail polish prepared by this method cannot achieve efficient combination with the nail surface, so that the adhesion of the nail polish cannot be effectively improved.

Moreover, the separate water-based polyurethane dispersion is easily swelled by water after film formation, which further reduces the adhesion of nail polish after soaking in water

[0005] Patent CN106074219B discloses a nail polish that relies on the compounding of polyurethane and polyacrylic resin. Due to the excellent cold resistance, elasticity and weather resistance of polyurethane, the water resistance and hardness of polyacrylic resin are used to provide sufficient water resistance for the nail polish. And the hardness of the nail polish is further improved by the crosslinking of polyacrylic acid film formation, but the nail polish cannot form an effective connection with the nail surface when the nail polish film is formed, so the final nail polish adhesion is not good, and the final consumer acceptance not tall

[0006] Although water-based nail polish is the development trend of nail polish products in the future, there are still few related researches on it. We urgently need to develop a water-based nail polish product with fast drying, high gloss, good adhesion, strong water resistance and high hardness. to meet market development needs

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