Polyurethane emulsion used for self-dry water-based nail polish, preparation method of polyurethane emulsion and nail polish prepared from polyurethane emulsion as base material

Abstract

The invention belongs to the field of functional polymer resin, and specifically relates to a polyurethane emulsion used for self-dry water-based nail polish. The polyurethane emulsion is prepared from the following raw materials in parts by weight: 500 to 800 parts of soybean oil, 85 to 125 parts of tartaric acid, 50 to 80 parts of Al<3+> supported cation exchange resin, 300 to 500 parts of butanol, 450 to 750 parts of 30wt% hydrogen peroxide, 180 to 300 parts of an isocyanate tripolymer, 90 to 140 parts of 1,4-butanediol, 50 to 80 parts of 2,2-dimethylolpropionic acid, 25 to 50 parts of an end-capping reagent, 2.5 to 5 parts of a catalyst, 12 to 30 parts of a neutralizer and 50 to 100 parts of deionized water. According to the water-based polyurethane emulsion disclosed by the invention,soybean oil is taken as a raw material for synthesis, when the soybean oil is taken as a base material of the nail polish, compared with the base material of the nail polish in the market at present,the soybean oil is more environmentally-friendly, healthy and low-toxic; and moreover, experiments prove that the biological polyurethane emulsion is further relatively high in adhesive force and durability, high in glossiness, low in film formation temperature, and excellent in mechanical resistance and chemical resistance, the film is tough and peelable, and the polyurethane emulsion is an ideal safe base material for the water-based nail polish.

Description

technical field [0001] The invention belongs to the technical field of cosmetics, and in particular relates to a polyurethane emulsion for self-drying water-based nail polish, a preparation method thereof and a nail polish prepared using the polyurethane emulsion as a base material. Background technique [0002] Paint is divided into varnish and color paint. Nail polish is actually a varnish or color paint (transparent paint or colored paint) that beautifies human nails. Among them, the varnish is composed of two parts: base material + additives; color paint is composed of three parts: base Materials + additives + pigments and fillers. Since the birth of paint, base material is the core element of any type of paint quality, grade, grade, environmental protection, etc., while additives, pigments and fillers are auxiliary elements. [0003] The multifunctionality of human fingers and the cruelty of the environment, objectively require high nail polish properties such as firmn...

AI Technical Summary

Problems solved by technology

If things go on like this, the nails will be polished very thin, the nails will become yellow, chapped, and brittle, resulting in the loss of the function of the nails to protect the "fingers" of the hand

Moreover, before the existing nail polish is used, in order to make the nail polish better adhere to the nail surface, the nail surface will also be polished before applying the nail polish. If things go on like this, very serious damage will be caused to the nail.

[0007] So far, the performance of water-based, environmentally friendly, quick-drying, one-component nail polishes has been difficult to greatly improve

Most of the existing technologies are to match or combine the existing general-purpose acrylic dispersions and water-based polyurethane dispersions that can be used as base materials in different ways, in order to find a solution to obtain special properties, but lack the performance of the base material itself. Improved research, resulting in the core basic material of nail polish - "base" is difficult to meet high standards of application quality requirements

[0008] Although there are soybean oil-based polyurethanes on the market, they are all used in foams, coatings, adhesives and other fields. During use, polyurethane is cured by UV to form a film. When using it as the only base material to prepare nail polish, due to the Contains a variety of fatty acids and its molecular weight distribution is relatively dispersed, and its hydroxyl content after alcoholysis has a large difference, making the polyurethane emulsion prepared only from it as a raw material unstable, which in turn makes the final nail polish product relatively weak in physical and chemical properties. Large fluctuations, such as poor water resistance, low hardness, easy precipitation, etc.

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