阅读说明：本技术 不可剥水性指甲油 (Non-strippable water-based nail polish ) 是由 周岚平 罗德福 吴泽纯 于 2021-09-14 设计创作，主要内容包括：本发明提供一种不可剥水性指甲油,所述水性指甲油按照重量份数比由以下成分组成：水性乳液40-60份、成膜助剂5-10份、增稠剂2-5份、防沉剂0.2-1份、流平剂0.1-0.5份、润湿分散剂0.5-1份、消泡剂0.5-1份、颜料0-10份、水10-20份。本发明提供的不可剥水性指甲油具有耐水性好、附着力高、硬度高、光泽度佳、表干适中、储存稳定性好等良好性能。(The invention provides an unpeelable aqueous nail polish which comprises the following components in parts by weight: 40-60 parts of water-based emulsion, 5-10 parts of film-forming additive, 2-5 parts of thickening agent, 0.2-1 part of anti-settling agent, 0.1-0.5 part of flatting agent, 0.5-1 part of wetting dispersant, 0.5-1 part of defoaming agent, 0-10 parts of pigment and 10-20 parts of water. The non-strippable water-based nail polish provided by the invention has good performances of good water resistance, high adhesive force, high hardness, good glossiness, moderate surface dryness, good storage stability and the like.)

1. The non-strippable water-based nail polish is characterized by comprising the following components in parts by weight:

40-60 parts of aqueous emulsion

Film-forming assistant 5-10

Thickener 2-5

0.2-1 part of anti-settling agent

0.1-0.5 of leveling agent

Wetting dispersant 0.5-1

0.5-1% of defoaming agent

0 to 10 parts by weight of pigment

10-20 parts of water

The aqueous emulsion is monoglyceride modified aqueous polyurethane emulsion.

2. The non-strippable aqueous nail polish of claim 1, wherein: the main structure of the aqueous emulsion is as follows:

wherein，

，

，

。

3. The non-strippable aqueous nail polish of claim 1, wherein: the film-forming assistant is an alcohol ether solvent.

4. The non-strippable aqueous nail polish of claim 1, wherein: the thickening agent is nonionic polyurethane associative thickening agent.

5. The non-strippable aqueous nail polish of claim 1, wherein: the anti-settling agent is polyamide wax.

6. The non-strippable aqueous nail polish of claim 1, wherein: the leveling agent is polyether modified polydimethylsiloxane.

7. The non-strippable aqueous nail polish of claim 1, wherein: the wetting dispersant is a copolymer aqueous solution containing high pigment affinity groups.

8. The non-strippable aqueous nail polish of claim 1, wherein: the defoaming agent is a mixture of foam-breaking polysiloxane and hydrophobic particles.

9. The non-strippable aqueous nail polish of claim 1, wherein: the pigment is one of inorganic pigment, organic pigment, pearl mica and colorful PET bright flake.

10. The method for preparing the non-strippable water-based nail polish as claimed in any one of claims 1 to 9, wherein the above components are added into a container and stirred in a high-speed stirrer at the speed of 1000 and 1500rpm for 30-60min, and the non-strippable water-based nail polish can be obtained after uniform mixing.

Technical Field

The invention relates to an unpeelable aqueous nail polish, which is particularly applied to the technical field of nail beautifying.

Background

Currently, nail products on the market are mainly classified into three categories. The first is oily nail polish, which is the earliest nail product, and all the products perform well, but the first is gradually not selected due to heavy smell and harmful solvents such as phthalate, benzene, formaldehyde, acetone, ethyl acetate and the like; the second type is nail polish gel, which has outstanding performance in all aspects, is more durable than common nail polish, is more convenient and diversified in nail pattern design, but can be quickly dried only by being irradiated by a UV/LED lamp after being coated, so that the idea that part of consumers want to manually do DIY is limited, and secondly, when nail is removed, the nail surface is polished by a file, and then nail is removed by nail removing water, so that the nail can be damaged to a certain extent; the third type is water-based nail polish, which is mainly characterized in that acrylic acid or polyurethane is strongly dispersed in water, acrylic acid or polyurethane particles are aggregated and stacked into a compact film after water is volatilized, and the acrylic acid or polyurethane particles are not well spread on the nail due to the reasons of large surface tension, large particle size and the like, so that the performances such as adhesive force, water resistance, hardness and the like are not as excellent as those of oil-based nail polish and nail polish glue, but the nail polish has the advantages of no odor, no toxicity, safety, environmental protection, simplicity and convenience in nail polish removal and the like. Generally, the water-based nail polish can last for about 3 to 7 days. When the nail polish is removed, the nail polish with good adhesive force can be directly scraped off after being soaked in warm water for several minutes, and can also be wiped off by using ethanol; the adhesive force is relatively poor, the nail can be directly torn off, and the nail is safe and not damaged. Therefore, the development of the aqueous nail polish is important, and the formulation needs to be continuously optimized and high-quality raw materials need to be adopted, so as to prepare the aqueous nail polish with excellent comprehensive performance.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides the non-strippable water-based nail polish which has good performances of good water resistance, high adhesive force, high hardness, good glossiness, moderate surface dryness, good storage stability and the like.

The invention is realized by the following steps:

the invention provides an unpeelable water-based nail polish which comprises the following components in parts by weight:

40-60 parts of aqueous emulsion

Film-forming assistant 5-10

Thickener 2-5

0.2-1 part of anti-settling agent

0.1-0.5 of leveling agent

Wetting dispersant 0.5-1

0.5-1% of defoaming agent

0 to 10 parts by weight of pigment

10-20 parts of water.

Further, the aqueous emulsion is monoglyceride modified aqueous polyurethane emulsion.

Further, the main structure of the aqueous emulsion is:

wherein，

，

，

。

Further, the film-forming assistant is an alcohol ether solvent.

Further, the thickener is a nonionic polyurethane associative thickener.

Further, the anti-settling agent is polyamide wax.

Further, the leveling agent is polyether modified polydimethylsiloxane.

Further, the wetting and dispersing agent is a copolymer aqueous solution containing high pigment affinity groups.

Further, the defoaming agent is a mixture of foam-breaking polysiloxane and hydrophobic particles.

Further, the pigment is one of inorganic pigment, organic pigment, pearlescent mica and colored PET bright flake.

Further, the preparation method of the non-strippable water-based nail polish comprises the steps of adding all the components into a container, then placing the container on a high-speed stirrer for stirring, stirring the mixture at the speed of 1000-1500rpm for 30-60min, and uniformly mixing the components to obtain the non-strippable water-based nail polish.

The invention has the following beneficial effects:

(1) the water resistance is good. The aqueous polyurethane emulsion prepared by monoglyceride modification and proper raw material selection has excellent water resistance, and the main reason is that hydrophobic group long fatty carbon chains are successfully introduced into molecular chains, the hydrophobic group long fatty carbon chains migrate to the surface of the film in the film forming process, and hydrophilic groups face into the film to form a film, so that the contact of external moisture and components in the film is effectively blocked, and the water resistance of the film is improved. Besides selecting the water-based polyurethane emulsion with excellent water resistance, the water-based polyurethane emulsion is matched with a plurality of assistants with good water resistance, such as a thickener nonionic polyurethane associated thickener, an anti-settling agent polyamide wax, a copolymer aqueous solution with a wetting dispersant containing high pigment affinity groups, and the like, so that the water resistance of the film layer can be further improved;

(2) the adhesive force is high. Due to the amphiphilic molecular structure of the monoglyceride, a film is formed on an interface between an oil phase and water, so that the surface tension of liquid is reduced, the synthesized waterborne polyurethane emulsion has good substrate wettability, and in addition, the leveling agent of the polyether modified polydimethylsiloxane can also assist in improving the substrate wettability of the base material, so that the prepared waterborne nail polish has high adhesive force;

(3) the hardness is high. The modified waterborne polyurethane emulsion prepared by matching polyester polyol and aliphatic polyisocyanate with other proper raw materials has better mechanical strength and hardness, and the waterborne nail polish with high hardness can be obtained by using the modified waterborne polyurethane emulsion as a waterborne emulsion. In addition, in the drying process of the film layer, the residual alcohol ether film-forming assistant after the water is volatilized enables polymer microdrops to be dissolved and fused into a continuous film, so that the hardness of the film layer is improved.

Detailed Description

The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides an unpeelable water-based nail polish which comprises the following components in parts by weight:

40-60 parts of aqueous emulsion

Film-forming assistant 5-10

Thickener 2-5

0.2-1 part of anti-settling agent

0.1-0.5 of leveling agent

Wetting dispersant 0.5-1

0.5-1% of defoaming agent

0 to 10 parts by weight of pigment

10-20 parts of water.

The water-based emulsion is monoglyceride modified water-based polyurethane emulsion, the film-forming aid is an alcohol ether solvent, the thickener is a nonionic polyurethane associated thickener, the anti-settling agent is polyamide wax, the leveling agent is polyether modified polydimethylsiloxane, the wetting dispersant is a copolymer aqueous solution containing high pigment affinity groups, the defoaming agent is a mixture of foam breaking polysiloxane and hydrophobic particles, and the pigment is one of inorganic pigment, organic pigment, pearlescent mica and colored PET bright sheets.

In the preferred embodiment, the coalescing agent is selected from dipropylene glycol n-butyl ether (DPnB), tripropylene glycol n-butyl ether (TPnB); the thickener can be one or two of ACRYSOL RM 8W, ACRYSOL RM 12W, ACRYSOL RM 5000, ACRYSOL RM 2020NPR of Rohm and Haas of USA; the anti-settling agent can be selected from one of HR300 and MONOFLAT-620WP of Moruolong Korea; the leveling agent can be selected from BYK-333 or BYK-307 of Germany Bike; the wetting dispersant can select one of TEGO 750W, TEGO Dispers 752W, TEGO Dispers 757W of Germany Digao; the defoaming agent can be selected from BYK-021, BYK-022 and BYK-024 of Bike Germany.

The following description will be made by specific examples.

Selecting raw materials.

(1) And (4) selecting an aqueous emulsion.

According to the invention, monoglyceride modified waterborne polyurethane emulsion is selected as the waterborne emulsion, and the emulsion has the advantages of good water resistance, high hardness, good adhesive force, high stability, good substrate wettability and the like. The principle of selecting the raw materials for synthesizing the monoglyceride modified aqueous polyurethane emulsion is as follows.

Oligomer polyol: when the polyester polyol is used as the soft segment, the capability of forming hydrogen bonds with the hard segment is stronger than that of the polyether polyol, so that the hard phase can be more uniformly distributed in the soft phase to play a role of an elastic crosslinking point, the intermolecular acting force is increased, and the glass temperature is increased, therefore, the mechanical strength and the hardness of the aqueous polyurethane emulsion synthesized by the polyester polyol are better than those of the aqueous polyurethane emulsion synthesized by the polyether polyol. The polyester polyol is selected from aliphatic polyester polyol PCL (polycaprolactone diol), the PCL has relatively high thermal stability and excellent biocompatibility, and the water-based polyurethane emulsion synthesized by the polyester polyol has good water resistance.

Polyisocyanate: IPDI (isophorone diisocyanate) belongs to aliphatic polyisocyanate, can improve the water resistance and strength of a film layer, and is not yellow.

Small-molecule chain extender: the performances of the waterborne polyurethane emulsion synthesized by BDO (1, 4-butanediol) are balanced in all aspects.

Hydrophilic chain extender: the method adopts a stepwise synthesis method, dissolves the hydrophilic chain extender DMPA (2, 2-dimethylolpropionic acid) by using a solvent NMP (N-methylpyrrolidone), and then adds the solution to ensure that the reaction is uniform and stable, the polymer chain segment structure of the product is regular, the mechanical property is good, the particle size is small, and the appearance of the formed film is good.

End-capping agent: monoglyceride (stearic acid monoglyceride) participates in the reaction as an end-capping agent. The monoglyceride molecule contains 2 glycerol hydroxyls and 1 fatty acid long carbon chain, the fatty acid long carbon chain belongs to lipophilic groups and has lipophilicity, and the hydroxyls are polar groups and have hydrophilicity. The amphiphilic molecular structure enables monoglyceride molecules to form a film at an interface between an oil phase and a water phase, reduces the surface tension of liquid, enables the synthesized aqueous polyurethane emulsion to have good substrate wettability, and improves the adhesive force of the emulsion to a substrate.

The monoglyceride introduces 18-carbon long fatty side chains which belong to hydrophobic groups on a polyurethane chain segment, the hydrophobic groups migrate to the surface of a membrane in the process of membrane formation and face air, and the hydrophilic groups face the membrane, so that the water resistance of the membrane layer is improved. Therefore, attention should be paid to controlling the amount of monoglyceride to ensure excellent water resistance of the film layer.

The addition of monoglyceride not only enables the film layer after film formation to have excellent water resistance, but also improves the state of the aqueous polyurethane emulsion, and the stability of the emulsion system is also improved. Monoglyceride is a nonionic surfactant and a good W/O type emulsifier, and the surface activity of the aqueous polyurethane emulsion is improved after the monoglyceride is connected to a polyurethane chain, so that the monoglyceride is more easily dispersed in water, and the stability is improved.

The synthesis of the monoglyceride modified aqueous polyurethane emulsion comprises the following steps:

firstly, adding PCL and IPDI into a four-neck flask provided with a nitrogen introducing device, a thermometer, a stirrer and a reflux condensing device according to the measurement, uniformly dispersing, and then heating to 50-60 ℃ for reaction for 2 hours;

cooling to about 40 ℃, adding metered hydrophilic chain extender DMPA (DMPA is dissolved by NMP solvent and then added), micromolecule chain extender BDO and a proper amount of catalyst dibutyltin dilaurate into the reactant obtained in the step I, heating to 70-80 ℃ for reaction for 4 hours, and adding a proper amount of NMP for adjustment if the system viscosity is too high in the reaction process;

thirdly, adding metered glyceryl monostearate, a small amount of solvent NMP and a catalyst dibutyltin dilaurate into the reactant obtained in the second step, keeping the temperature unchanged, measuring the NCO content by adopting a di-n-butylamine-hydrochloric acid titration method after reacting for 3 hours, adding a proper amount of NMP after the NCO content reaches a set value, cooling to below 45 ℃, and discharging;

and fourthly, triethylamine TEA is dripped into the reactant obtained in the third step for neutralization, and deionized water is added for emulsification for 10min under high-speed stirring to obtain emulsion.

The synthesis route of the monoglyceride modified aqueous polyurethane emulsion comprises the following steps:

the first step is as follows:

the second step is that:

the third step:

the fourth step:

wherein，

，

，

。

(2) And (4) selecting a film-forming auxiliary agent.

The film-forming assistant can improve the film-forming mechanism of the emulsion and help the emulsion to form a film quickly, and has certain volatility, so that the film can be retained in a film layer to play a role in the film-forming process, and the film can be completely volatilized after the film is formed, and the performance of the film layer is not influenced. In the drying process of the film layer, the residual film-forming assistant after the water is volatilized enables polymer microdrops to be dissolved and fused into a continuous film, and the film-forming assistant has the function of a plasticizer besides the dissolving function, can promote the plastic flow and elastic deformation of the molecular polymer and improve the coalescence performance. The alcohol ether solvent selected by the invention has the advantages of quick drying, high hardness, strong adhesion resistance, scratch resistance and the like, shows good binding force to various aqueous emulsions, and endows the system with excellent film forming property. Dipropylene glycol n-butyl ether (DPnB) and tripropylene glycol n-butyl ether (TPnB) of Dow, USA can be selected.

(3) And (4) selecting a thickening agent.

The nonionic polyurethane associative thickener consists of three parts of hydrophobic group, hydrophilic chain and polyurethane agent. The hydrophobic group has an association function, is associated with a hydrophobic structure such as latex particles, a surfactant, a pigment and the like to form a three-dimensional network structure, is a determining factor of thickening, and is usually an oil base, an octadecyl group, a dodecylphenyl group, a nonylphenol group and the like. Hydrophilic chains, which provide chemical and viscosity stability, function with hydrogen bonding to water molecules, and polyethers are often chosen as hydrophilic chains. The molecular chain is extended by a polyurethane group such as IPDI, TDI, HMDI, etc. The nonionic polyurethane associative thickener has the characteristics of excellent thickening effect and high thickening efficiency, and can effectively endow a system with good thixotropy and proper viscosity, thereby meeting the requirements of various aspects such as stability, application performance and the like in the production, storage and use processes. The water-based paint also has the advantages of excellent water resistance, transparency, uniform film-forming property and the like, provides excellent fluidity and leveling property, does not influence luster, is convenient to add, and has good compatibility with other auxiliaries. One or two of ACRYSOL RM 8W, ACRYSOL RM 12W, ACRYSOL RM 5000, ACRYSOL RM 2020NPR of roman hass, usa may be selected.

(4) And (4) selecting an anti-settling agent.

The polyamide wax anti-settling agent endows a three-dimensional network structure to an aqueous system through self interaction or interaction with other components of the system, exerts good pigment settling prevention performance, can suspend pigment particles without agglomeration, improves the orientation and arrangement of the pigment, improves the system performance, maintains excellent leveling property and the like. Meanwhile, the polyamide wax anti-settling agent also has good water resistance and cannot influence the gloss of a film layer. One of HR300 and MONOFLAT-620WP of Morolong, Korea can be selected.

(5) And (4) selecting a leveling agent.

The polyether modified polydimethylsiloxane can strongly reduce the surface tension, improve the leveling property of a system and the wettability on a substrate, promote a material body to form a flat, smooth and uniform film layer in the drying film-forming process, prevent shrinkage cavities, and simultaneously improve the surface smoothness and the gloss of the film layer. Blocking resistance can also be improved in aqueous systems. One of BYK-333 and BYK-307 of Bike Germany can be selected.

(6) Selection of wetting dispersant.

The wetting dispersant of the copolymer aqueous solution containing the high pigment affinity group is a high-performance polymer type wetting dispersant, has the advantages of excellent pigment stability, color development property, water resistance, storage stability and the like, and effectively prevents the occurrence of undesirable phenomena of flooding, blooming, hard sediment of organic and inorganic pigments and the like. One of the German Digao TEGO 750W, TEGO Disperss 752W, TEGO Disperss 755W, TEGO Disperss 757W can be selected.

(7) And (4) selecting an antifoaming agent.

The defoaming agent of the mixture of the foam-breaking polysiloxane and the hydrophobic particles can effectively reduce the surface tension of the liquid, achieve the effects of quick defoaming and foam inhibition, and improve the utilization rate of the container. Meanwhile, the color acceptance and the glossiness of the system are not influenced, the dispersibility of the pigment can be improved, and the system has good compatibility and strong stability. One of BYK-021, BYK-022 and BYK-024 of Bike Germany can be selected.

(II) formulation compositions of examples 1-6.

Each formula comprises the following components in parts by weight.

Example 1

Monoglyceride modified aqueous polyurethane emulsion 42

DPnB 5

ACRYSOL RM 8W 0.5

ACRYSOL RM 2020NPR 1

HR300 0.2

BYK-333 0.1

TEGO ® Dispers 750W 0.5

BYK-024 0.5

Pigment 1

And (4) water 12.

Example 2

Monoglyceride-modified aqueous polyurethane emulsion 45

TPnB 5

ACRYSOL RM 12W 0.6

ACRYSOL RM 2020NPR 1.2

HR300 0.4

BYK-333 0.2

TEGO ® Dispers 755W 0.6

BYK-022 0.6

Pigment 2

And (4) water 12.

Example 3

Monoglyceride modified aqueous polyurethane emulsion 50

DPnB 6

ACRYSOL RM 8W 0.8

ACRYSOL RM 5000 1.4

HR300 0.5

BYK-307 0.3

TEGO ® Dispers 755W 0.6

BYK-024 0.7

Pigment 2

And (3) water 14.

Example 4

Monoglyceride-modified aqueous polyurethane emulsion 52

DPnB 6

ACRYSOL RM 2020NPR 2

MONOFLAT-620WP 0.7

BYK-307 0.4

TEGO ® Dispers 752W 0.8

BYK-024 0.7

Pigment 3

And (4) water 15.

Example 5

Monoglyceride modified aqueous polyurethane emulsion 55

TPnB 8

ACRYSOL RM 8W 0.8

ACRYSOL RM 2020NPR 1.6

HR300 0.6

BYK-307 0.5

TEGO ® Dispers 750W 0.6

BYK-021 0.8

Pigment 2

And (4) water 15.

Example 6

Monoglyceride modified aqueous polyurethane emulsion 58

DPnB 10

ACRYSOL RM 12W 1

ACRYSOL RM 2020NPR 1.5

MONOFLAT-620WP 0.8

BYK-333 0.5

TEGO ® Dispers 757W 0.8

BYK-024 1

Pigment 3

And (4) water 17.

Examples 1-6 were prepared according to the following preparation:

adding all the components in the formula in a container, then placing the mixture on a high-speed stirrer for stirring, stirring the mixture for 40min at the speed of 1200rpm, and uniformly mixing to obtain the non-strippable water-based nail polish.

The aqueous nail varnishes prepared in examples 1 to 6 and comparative examples 1 and 2 (two commercially available non-strippable aqueous nail varnishes) were tested for their properties according to the following test methods.

(1) Water resistance: the aqueous nail polishes of the examples and comparative examples were coated on clean plastic panels to a thickness of about 100 μm. The mixture was dried in an oven at 37 ℃ and a relative humidity of 50% for 2 hours. And then putting the film-formed plastic plate into water at room temperature for 30min, observing the edge starting condition, and scoring for 1-10 minutes according to the edge starting condition, wherein 1 minute is the worst, and 10 minutes is the best.

(2) Adhesion force: the aqueous nail polishes of the examples and comparative examples were coated on clean plastic panels to a thickness of about 100 μm. The mixture was dried in an oven at 37 ℃ and a relative humidity of 50% for 2 hours. Then, a hundred grid knife is used for scribing 10 multiplied by 10 grids with the specification of 1mm multiplied by 1mm on the surface of the dried film layer, each scribing line needs to go deep into the bottom layer position, then, 3M600 size gummed paper or other gummed paper with the same effect is used for covering and sticking the small grids, and the gummed paper is forcibly extruded through an eraser, so that the contact force and the area between the gummed paper and a test area are improved. The test was performed 2 times in the same position by grasping one end of the tape with the hand and quickly pulling the tape off in the vertical direction. The result is divided into 6 grades, 0B-5B, the larger the grade value is, the better the adhesive force is, 0B represents that the adhesive force is poor, and 5B represents that the adhesive force is good.

(3) Pencil hardness: the aqueous nail polishes of the examples and comparative examples were coated on clean plastic panels to a thickness of about 100 μm. The mixture was dried in an oven at 37 ℃ and a relative humidity of 50% for 2 hours. The test was then carried out with a 750g load pencil hardness tester. The total number of the hardness grades is 18, and the hardness is respectively 6B, 5B, 4B, 3B, 2B, HB, F, H, 2H, 3H, 4H, 5H, 6H, 7H, 8H, 9H and 10H from small to large.

(4) Gloss: the aqueous nail polishes of the examples and comparative examples were applied to clean nail pieces to a thickness of about 100 μm. The mixture was dried in an oven at 37 ℃ and a relative humidity of 50% for 2 hours. The gloss test was then performed with a portable specular gloss meter at a 60 degree entrance angle. The higher the measured value, the better the gloss.

(5) Surface drying time: the aqueous nail polishes of the examples and comparative examples were applied to clean nail pieces to a thickness of about 100 μm. And measuring the surface drying time by using a finger touch method, and indicating that the nail polish is completely dried when the finger is completely not sticky after contacting the film layer.

(6) Wear resistance: the aqueous nail polishes of the examples and comparative examples were applied to clean nail pieces to a thickness of about 120 μm. The mixture was dried in an oven at 37 ℃ and a relative humidity of 50% for 2 hours. The dried aqueous nail enamel was then scratched 5 times with a paper sheet and scored after visual inspection. The scoring standard is that the surface of the membrane is not changed into 9-10 points; the surface of the film has a slight scratch of 7-8 minutes; the obvious scratch on the surface of the film is 5 to 6 minutes; the surface part of the film is wiped off for 3 to 4 minutes; the film was rubbed off heavily for 1-2 minutes.

(7) Coating performance: the aqueous nail varnishes of examples and comparative examples were applied to the nails of a group of healthy persons, and the ease of application, smoothness after film formation, and presence or absence of stringiness were visually observed and compared. And (4) scoring according to comprehensive evaluation, wherein the higher the score is, the better the coating performance is, and the full score is 10.

(8) Storage stability: the aqueous nail polish of the examples and the comparative examples is put into a constant temperature oven with the temperature of 60 ℃ for accelerated aging test, is taken out after 15 days of test, is cooled to normal temperature, and is observed whether the material body has abnormal phenomena such as viscosity reduction, delamination, pigment sinking, material precipitation, caking and the like. And if the material body does not have large change, the material body is qualified, otherwise, the material body is not qualified.

The following are the results of the performance tests of examples 1-6 and comparative examples 1, 2:

。

it can be seen that the examples and the comparative examples are not much different in the surface drying speed, coating property, but the examples are far more prominent in water resistance, adhesion, abrasion resistance than the comparative examples, and the examples are excellent in hardness, gloss, storage stability. Generally, the aqueous nail polish prepared in the examples has good performance in all performance tests and excellent comprehensive performance.

In conclusion, the water resistance, the adhesive force, the hardness and other properties of the water-based emulsion are improved by adopting the monoglyceride modified water-based polyurethane emulsion. The alcohol ether film-forming solvent accelerates the drying speed of the aqueous nail polish and improves the hardness of the aqueous nail polish after film forming by matching with a plurality of auxiliary agents with good water resistance; the viscosity of the nonionic polyurethane associative thickener is adjusted to ensure that the viscosity of the water-based nail polish meets the use requirement; the polyamide anti-settling agent prevents the pigment from settling; the leveling agent of the polyether modified polydimethylsiloxane effectively improves the substrate wettability of the system and promotes the leveling; the wetting dispersant of the copolymer aqueous solution containing high pigment affinity groups has outstanding pigment wetting and dispersing effects, thereby improving the storage stability of the system; the defoaming agent of the mixture of the foam-breaking polysiloxane and the hydrophobic particles effectively eliminates air bubbles in the system, so that the water-based nail polish has good appearance effect after being dried into a film. Finally, the dosage of each component in the formula is continuously optimized and improved, so that the prepared water-based nail polish has good performances of good water resistance, high adhesive force, high hardness, good glossiness, moderate surface dryness, good storage stability and the like.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.