Composite modified color paste, preparation method thereof and application of composite modified color paste in water-based nail polish composition

Abstract

The invention discloses composite modified color paste, a preparation method thereof and application of the composite modified color paste in a water-based nail polish composition. The nail polish is prepared from the following components in parts by weight: 65.0 to 80.0 parts of a film forming agent, 0 to 5.0 parts of a film forming auxiliary agent, 1.0 to 3.0 parts of a thickening agent, 0.5 to 25.0 parts of composite modified color paste, 0 to 3.0 parts of an auxiliary agent and 0 to 34.0 parts of water. Wherein a coloring agent used by the water-based nail polish composition is color paste obtained by firstly performing hydrophilic surface treatment on toner and then dispersing the toner with water-based polyurethane, so that the water-based nail polish composition has good color storage stability.

Description

Technical Field

[0001] The invention relates to the technical field of cosmetics, in particular to a composite modified color paste, a preparation method thereof and application thereof in a water-based nail polish composition. Background Art

[0002] In recent years, as people pay more and more attention to their personal image, nail polish, as a cosmetic that can show personality and taste, has gradually been favored by consumers, and the market size of nail polish has also been expanding. More and more consumers are beginning to pay attention to the beauty of their nails and are willing to pay for high-quality, personalized nail polish products. The development of social media and the Internet has also provided convenient conditions for the promotion and popularization of the nail polish market, accelerating the growth of the nail polish market.

[0003] Traditional oil-based nail polish is generally made of volatile solvents, nitrocellulose, oil and pigments. The principle of adhering to the surface of the nail is to first destroy the surface layer of the nail, create many rough holes on the surface, and then apply nail polish to firmly adhere to the surface of the nail to achieve a long-lasting makeup effect. Although traditional nail polish has strong makeup durability, it contains more volatile organic solvents, and nail polish remover containing more organic solvents is required for nail polish removal. Frequent use will make the nails thinner and brittle, and easily split and break, causing certain harm to the user's body.

[0004] In order to solve the disadvantage of traditional oil-based nail polish containing more volatile organic compounds, water-based nail polish with water-based polyurethane emulsion or water-based acrylic emulsion as film-forming agent has appeared on the market. This type of water-based nail polish uses water as the main solvent, contains no or very little organic matter, will not cause adverse effects on the human body, and can effectively solve the problem that traditional nail polish can cause damage to the human body. However, the water-based nail polish on the market is of varying quality, with problems such as poor makeup durability and easy shedding. Among them, the biggest problem is the poor color storage stability, which is prone to floating color and blooming, which greatly reduces the shelf life of water-based nail polish.

[0005] Chinese patent CN102228411B discloses a two-in-one water-soluble nail polish film solution, and its patented formula solves the problems of slow drying speed, heat resistance and cold resistance of water-based nail polish, but does not solve the problem of unstable color storage in water-based nail polish; Publication No. CN105380823A discloses a water-based nail polish composition, which solves the problems of drying speed and hardening speed of water-based nail polish, and also has excellent wear resistance and good gloss and coating performance, but does not solve the problem of unstable color storage in water-based nail polish. Summary of the invention

[0006] In order to solve the above technical problems, the present invention provides a composite modified color paste, a preparation method thereof and an application thereof in a water-based nail polish composition. The composite modified color paste of the present invention is firstly prepared by dispersing a common color powder through a hydrophilic surface treatment and then using an aqueous polyurethane to obtain a color paste, which can make the water-based nail polish composition have good color storage stability.

[0007] The first object of the present invention is to provide a method for preparing a color paste, comprising the following steps:

[0008] S1, providing color powder slurry;

[0009] S2, adjusting the color powder slurry to alkaline, heating and reacting to obtain a mixed slurry;

[0010] S3, adding silicon dioxide powder to the mixed slurry, so that the silicon dioxide completely covers the surface of the toner to form a composite material of silicon dioxide-coated toner;

[0011] S4, adding a hydrophilic surface modifier to the reaction slurry containing the composite material, so that the surface of the toner coated with silicon dioxide is coated with the hydrophilic surface modifier to obtain a composite modified toner;

[0012] S5, adding the composite modified color powder into an aqueous polyurethane dispersion and adding water to obtain a composite modified color powder slurry, grinding, stirring and dispersing the composite modified color powder slurry to obtain the composite modified color paste.

[0013] In some embodiments of the present invention, in step S1, the concentration of the toner slurry is 100-200 g / L.

[0014] In some embodiments of the present invention, in step S2, the alkaline pH value of the toner slurry is 9 to 10;

[0015] The conditions of the heating reaction are as follows: the heating temperature is 40-90° C., the time is 20-30 min, and the reaction stirring rate is 400-1000 r / min.

[0016] In some embodiments of the present invention, in step S3, the amount of silicon dioxide powder added is 0.5-5.0% of the mass of the toner; and the mixed slurry is stirred for 10-60 minutes.

[0017] In some embodiments of the present invention, in step S4, the amount of the hydrophilic surface modifier added is 1% to 10% of the mass of the toner; and the step further includes stirring the reaction slurry for 10 to 60 minutes;

[0018] The hydrophilic surface modifier is selected from one or more of a silane coupling agent, a titanate coupling agent, a surfactant, a water-soluble polymer, an organic silicone oil, an unsaturated organic acid, and an inorganic surface modifier;

[0019] Furthermore, the silane coupling agent is selected from one or more of PEG-12 polydimethylsiloxane and 3-aminopropyltriethoxysilane.

[0020] In some embodiments of the present invention, in step S5, the raw material further includes a thickening suspending agent, and the mass ratio of the composite modified color powder, the water-based polyurethane and the thickening suspending agent is (10-15): (65-75): (0-2.0);

[0021] The thickening suspending agent is selected from non-ionic HEUR thickeners and / or aluminum silicate thickeners, and can be, for example, one or more of PEG-150 / decyl alcohol / SMDI copolymer, sodium magnesium lithium silicate, and aluminum magnesium silicate.

[0022] The aqueous polyurethane dispersion is selected from one or more of polyurethane-1, polyurethane-2, polyurethane-10 and polyurethane-35.

[0023] The content of the toner in the composite modified toner slurry is 10wt% to 15wt%.

[0024] The second object of the present invention is to provide a composite modified color paste obtained by the preparation method.

[0025] The third object of the present invention is to provide an aqueous nail polish composition, comprising a film former, a film-forming aid, a thickener, an auxiliary agent, and water, characterized in that it also comprises the color paste described in claim 7.

[0026] In some embodiments of the present invention, the film-forming agent comprises 65.0 to 80.0 parts, the film-forming auxiliary agent comprises 0 to 5.0 parts, the thickener comprises 1.0 to 3.0 parts, the color paste comprises 0.5 to 25.0 parts, the auxiliary agent comprises 0 to 3.0 parts, and the water comprises 0 to 34.0 parts.

[0027] In some embodiments of the present invention, the film former is selected from one or more of an aqueous polyurethane dispersion and an aqueous acrylic dispersion;

[0028] The film-forming aid is selected from one or more of polyvinyl alcohol, dipropylene glycol methyl ether, and dipropylene glycol butyl ether; further, the film-forming aid is preferably dipropylene glycol methyl ether and dipropylene glycol butyl ether. The combination of dipropylene glycol butyl ether and dipropylene glycol methyl ether can make the formed film have a certain water resistance, preventing water from dissolving the nail polish.

[0029] The thickener is one or more of HEUR thickener, acrylic thickener, cellulose thickener, bentonite, aluminum silicate, hectorite, and dispersible wax emulsion;

[0030] Furthermore, the thickener is preferably a nonionic HEUR thickener, an acrylic thickener, or an aluminum silicate thickener. HEUR thickeners, acrylic thickeners, and cellulose thickeners can make nail polish have excellent leveling performance and fullness, especially the water-based nail polish prepared by using nonionic HEUR thickeners, acrylic thickeners, and aluminum silicate thickeners in combination has excellent anti-settling effect and excellent brushability and smooth feeling.

[0031] In some embodiments of the present invention, the color paste used is dispersed by an aqueous polyurethane dispersion, which is the same as the film-forming agent used in the aqueous nail polish system, and is an aqueous polyurethane dispersion. According to the characteristics of similar compatibility, the color paste is used in the aqueous nail polish system, which is easier to disperse and less prone to precipitation and stratification. Together with the above-mentioned thickener, the colorant can be better dispersed and suspended in the aqueous nail polish system, and is less prone to stratification and precipitation, greatly improving the color storage stability of the aqueous nail polish and extending the shelf life of the aqueous nail polish.

[0032] The auxiliary agent is a water-soluble flavor and / or a broad-spectrum preservative.

[0033] In some embodiments of the present invention, the preparation method of the aqueous nail polish composition adopts a mixing and stirring method. Specifically, 65.0-80.0 parts of film former, 0-5.0 parts of film-forming auxiliary agent, 1.0-3.0 parts of thickener, 0.5-25.0 parts of color paste, 0-3.0 parts of auxiliary agent, and 0-34.0 parts of water are mixed, and stirred at a high speed of 800r / min-1000r / min for 1-2 hours using a stirrer to mix them evenly, and finally obtain the aqueous nail polish composition.

[0034] The above technical solution of the present invention has the following advantages compared with the prior art:

[0035] The invention provides a water-based nail polish composition. The color paste used is a color paste obtained by first subjecting a common color powder to a hydrophilic surface treatment and then dispersing the color paste with a water-based polyurethane dispersion. The color paste has extremely strong hydrophilicity and can match a variety of water-based systems to form self-dispersion in the water-based system. After the hydrophilic surface treatment, the water-based polyurethane dispersion is used for high-speed dispersion to form a uniform color paste. The color powder is dispersed by the water-based polyurethane dispersion. The dispersant is the same as the film-forming agent in the water-based nail polish, and both are water-based polyurethane dispersions. According to the characteristics of similar compatibility, the color paste is easier to disperse in the water-based nail polish system, has better compatibility with the film-forming agent in the water-based nail polish system, can effectively prevent the colorant from agglomerating and settling, greatly improves the color storage stability of the water-based nail polish, and prolongs the shelf life of the water-based nail polish. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below according to specific embodiments of the present invention in conjunction with the accompanying drawings, wherein:

[0037] Figure 1 This is a diagram of nail polish 1# to nail polish 6# prepared in the examples and comparative examples of the present invention after being placed in a 50° C. oven for 90 days. DETAILED DESCRIPTION

[0038] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0039] Embodiment 1:

[0040] This embodiment provides a formula and preparation method of a water-based nail polish composition:

[0041] 1. Formulation: (a1) 58.0 g of Kingcova PU-101 (waterborne polyurethane dispersion, Guangzhou Liankai Powder Technology Co., Ltd.)

[0042] (a2) 9.0 g of Kingcova PU-20 (aqueous polyurethane dispersion, Guangzhou Liankai Powder Technology Co., Ltd.)

[0043] (b1) 3.0 g of DOWANOL DPM (film-forming aid, Dow Chemical)

[0044] (b2) 1.0 g 3.0 g DOWANOL DPNB (film-forming aid, Dow Chemical)

[0045] (c1) 0.5g LAPONITE XLS (thickener, Aoxue New Materials)

[0046] (c2) 1.7g 9241NP (thickener, Wanhua Chemical)

[0047] (d) 20.0g of color paste 1#

[0048] (e1) 0.5 g Microcare PHG (preservative)

[0049] (e2) 0.5 g of MKB04509 (flavor)

[0050] (f) 5.8 g of water.

[0051] 2. Preparation method: After weighing the above components, use an IKA stirrer at 1000r / min for 2 hours to mix them evenly to make nail polish 1#;

[0052] The steps for making the color paste are as follows:

[0053] (1) Weigh 15.0 g of Kingpigment 116R color powder and add 100 mL of a mixed liquid of propylene glycol and water in a volume ratio of 2:3 to prepare a color powder slurry 1 with a concentration of 150 g / L;

[0054] (2) adding sodium hydroxide to the toner slurry 1 of step (1) to adjust the pH value of the slurry to within 9.5, reacting at a reaction temperature of 60° C. and a stirring speed of 500 r / min for 30 min to obtain a mixed slurry;

[0055] (3) adding silicon dioxide powder to the mixed slurry in step (2) and stirring for 30 minutes to completely coat the surface of the toner with silicon dioxide, wherein the amount of silicon dioxide added is 1 wt% of the mass of the toner;

[0056] (4) adding PEG-12 polydimethylsiloxane to the reaction slurry in step (3) and stirring for 40 minutes so that the toner is completely coated with PEG-12 polydimethylsiloxane, wherein the amount of PEG-12 polydimethylsiloxane added is 3% of the mass of the toner;

[0057] (5) filtering, washing, drying and grinding the reaction slurry in step (4) to obtain a composite modified toner;

[0058] (6) Weigh 15 g of the composite modified toner obtained in step (5), add 75 g of aqueous polyurethane dispersion, 0.8 g of thickening suspending agent, and add water to make up to 100 g to obtain a toner slurry 2 with a toner content of 15%;

[0059] (7) The color powder slurry 2 of step (6) is placed in a sand mill and ground and stirred at a stirring speed of 2000 r / min for 3 hours. After stirring for 2 hours, the dispersion of the color powder in the slurry is tested and observed. If the particle size is uniform and meets the requirements, water is added to constant weight, and stirring is continued for about 10 minutes before discharging the material. Finally, the color slurry 1# required for the experiment is obtained.

[0060] Embodiment 2:

[0061] This embodiment provides a formula and preparation method of a water-based nail polish composition:

[0062] 1. Formulation: (a1) 58.0 g of Kingcova PU-101 (waterborne polyurethane dispersion, Guangzhou Liankai Powder Technology Co., Ltd.)

[0063] (a2) 9.0 g of Kingcova PU-20 (aqueous polyurethane dispersion, Guangzhou Liankai Powder Technology Co., Ltd.)

[0064] (b1) 3.0 g of DOWANOLDPM (film-forming aid, Dow Chemical)

[0065] (b2) 1.0 g 3.0 g DOWANOLDPNB (film-forming aid, Dow Chemical)

[0066] (c1) 0.45 g of LAPONITE XLS (thickener, Aoxue New Materials)

[0067] (c2) 1.9g 9241NP (thickener, Wanhua Chemical)

[0068] (d) 20.0g of color paste 2#

[0069] (e1) 0.5 g Microcare PHG (preservative)

[0070] (e2) 0.5 g of MKB04509 (flavor)

[0071] (f) 5.65 g of water.

[0072] 2. Preparation method: After weighing the above components, use an IKA stirrer at a high speed of 1000r / min for 2 hours to mix them evenly to make nail polish 2#.

[0073] Wherein, the preparation method of color paste is:

[0074] The preparation method of the color paste is similar to that in Example 1, except that the added color powder is different.

[0075] (1) Weigh 15.0 g of Kingpigment 710V color powder, add 100 mL of a mixed liquid of propylene glycol: water in a volume ratio of 2:3, and prepare a color powder slurry 1 with a concentration of 150 g / L;

[0076] (2) adding sodium hydroxide to the toner slurry 1 of step (1) to adjust the pH value of the slurry to within 9.5, reacting at a reaction temperature of 60° C. and a stirring speed of 500 r / min for 30 min to obtain a mixed slurry;

[0077] (3) adding silicon dioxide powder to the mixed slurry in step (2) and stirring for 30 minutes to completely coat the surface of the toner with silicon dioxide, wherein the amount of silicon dioxide added is 1 wt% of the mass of the toner;

[0078] (4) adding PEG-12 polydimethylsiloxane to the reaction slurry in step (3) and stirring for 40 minutes so that the toner is completely coated with PEG-12 polydimethylsiloxane, wherein the amount of PEG-12 polydimethylsiloxane added is 3% of the mass of the toner;

[0079] (5) filtering, washing, drying and grinding the reaction slurry in step (4) to obtain a composite modified toner;

[0080] (6) Weigh 10 g of the composite modified toner obtained in step (5), add 82 g of aqueous polyurethane dispersion, 0.6 g of thickening suspending agent, and add water to make up to 100 g to obtain toner slurry 2 with a toner content of 15%;

[0081] (7) The color powder slurry 2 of step (6) is placed in a sand mill and ground and stirred at a stirring speed of 2000 r / min for 16 hours. After stirring for 2 hours, the dispersion of the color powder in the slurry is tested and observed. If the particle size is uniform and meets the requirements, water is added to constant weight, and stirring is continued for about 10 minutes before discharging the material. Finally, the color slurry 2# required for the experiment is obtained.

[0082] Embodiment 3:

[0083] This embodiment provides a formula and preparation method of a water-based nail polish composition:

[0084] 1. Formulation: (a1) 61.0 g of Kingcova PU-101 (waterborne polyurethane dispersion, Guangzhou Liankai Powder Technology Co., Ltd.)

[0085] (a2) 9.5 g of Kingcova PU-20 (aqueous polyurethane dispersion, Guangzhou Liankai Powder Technology Co., Ltd.)

[0086] (b1) 3.0 g of DOWANOLDPM (film-forming aid, Dow Chemical)

[0087] (b2) 1.0 g 3.0 g DOWANOLDPNB (film-forming aid, Dow Chemical)

[0088] (c1) 0.3g LAPONITE XLS (thickener, Aoxue New Materials)

[0089] (c2) 2.0g 9241NP (thickener, Wanhua Chemical)

[0090] (d) 10.0g of color paste 3#

[0091] (e1) 0.5 g Microcare PHG (preservative)

[0092] (e2) 0.5 g of MKB04509 (flavor)

[0093] (f) 12.2 g of water.

[0094] 2. Preparation method: After weighing the above components, use an IKA stirrer at a high speed of 1000r / min for 2 hours to mix them evenly to make nail polish 3#.

[0095] The preparation method of the color paste is similar to that in Example 1, except that the added color powder is different.

[0096] (1) Weigh 15.0 g of Kingpigment 340Y toner and add 100 mL of a mixed liquid of propylene glycol: water in a volume ratio of 2:3 to prepare a toner slurry 1 with a concentration of 100 g / L;

[0097] (2) adding sodium hydroxide to the toner slurry 1 of step (1) to adjust the pH value of the slurry to within 9.5, reacting at a reaction temperature of 60° C. and a stirring speed of 500 r / min for 30 min to obtain a mixed slurry;

[0098] (3) adding silicon dioxide powder to the mixed slurry in step (2) and stirring for 30 minutes to allow the silicon dioxide to completely coat the surface of the toner, wherein the amount of silicon dioxide added is 1 wt% of the mass of the toner;

[0099] (4) adding PEG-12 polydimethylsiloxane to the reaction slurry in step (3) and stirring for 40 minutes so that the toner is completely coated with PEG-12 polydimethylsiloxane, wherein the amount of PEG-12 polydimethylsiloxane added is 3% of the mass of the toner;

[0100] (5) filtering, washing, drying and grinding the reaction slurry in step (4) to obtain a composite modified toner;

[0101] (6) Weigh 10 g of the composite modified toner obtained in step (5), add 85 g of the aqueous polyurethane dispersion, and add water to make up to 100 g to obtain a toner slurry 2 with a toner content of 10%;

[0102] (7) The color powder slurry 2 of step (6) is placed in a sand mill and ground and stirred at a stirring speed of 2000 r / min for 3 hours. After stirring for 2 hours, the dispersion of the color powder in the slurry is tested and observed. If the particle size is uniform and meets the requirements, water is added to constant weight, and stirring is continued for about 10 minutes before discharging the material. Finally, the color slurry 3# required for the experiment is obtained.

[0103] Comparative Example 1

[0104] The method is basically the same as Example 1, except that step (4) is missing in the preparation process of the color paste, and the final product is nail polish 4#.

[0105] The steps for making the color paste are as follows:

[0106] Weigh 15.0 g of Kingpigment 116R color powder, add 100 mL of a mixed liquid of propylene glycol: water in a volume ratio of 2:3, and prepare a color powder slurry 1 with a concentration of 150 g / L;

[0107] (2) adding sodium hydroxide to the toner slurry 1 of step (1) to adjust the pH value of the slurry to within 9.5, reacting at a reaction temperature of 60° C. and a stirring speed of 500 r / min for 30 min to obtain a mixed slurry;

[0108] (3) adding silicon dioxide powder to the mixed slurry in step (2) and stirring for 30 minutes to completely coat the surface of the toner with silicon dioxide, wherein the amount of silicon dioxide added is 1 wt% of the mass of the toner;

[0109] (4) filtering, washing, drying and grinding the reaction slurry in step (3) to obtain a composite modified toner;

[0110] (5) Weigh 15 g of the composite modified toner obtained in step (4), add 75 g of aqueous polyurethane dispersion, 0.8 g of thickening suspending agent, and add water to make up to 100 g to obtain toner slurry 2 with a toner content of 15%;

[0111] (6) The color powder slurry 2 of step (5) is placed in a sand mill and ground and stirred at a stirring speed of 2000 r / min for 3 hours. After stirring for 2 hours, the dispersion of the color powder in the slurry is tested and observed. If the particle size is uniform and meets the requirements, water is added to constant weight, and stirring is continued for about 10 minutes before discharging the material. Finally, the color slurry 4# required for the experiment is obtained.

[0112] 1. Nail polish formula:

[0113] (a1) 58.0 g of Kingcova PU-101 (aqueous polyurethane dispersion, Guangzhou Liankai Powder Technology Co., Ltd.)

[0114] (a2) 9.0 g of Kingcova PU-20 (aqueous polyurethane dispersion, Guangzhou Liankai Powder Technology Co., Ltd.)

[0115] (b1) 3.0 g of DOWANOL DPM (film-forming aid, Dow Chemical)

[0116] (b2) 1.0 g 3.0 g DOWANOL DPNB (film-forming aid, Dow Chemical)

[0117] (c1) 0.5g LAPONITE XLS (thickener, Aoxue New Materials)

[0118] (c2) 1.7g 9241NP (thickener, Wanhua Chemical)

[0119] (d) 20.0g of color paste 4#

[0120] (e1) 0.5 g Microcare PHG (preservative)

[0121] (e2) 0.5 g of MKB04509 (flavor)

[0122] (f) 5.8 g of water.

[0123] Preparation method of nail polish: After weighing the above components, use an IKA stirrer at a high speed of 1000r / min for 2 hours to mix them evenly to make nail polish 4#.

[0124] Comparative Example 2 (compared with Example 1, the variable is that the toner is not dispersed by the aqueous polyurethane dispersion):

[0125] This comparative example provides a water-based nail polish composition and a preparation method thereof:

[0126] 1. Formulation: (a1) 73.5 g Kingcova PU-101 (waterborne polyurethane dispersion, Guangzhou Liankai Powder Technology Co., Ltd.)

[0127] (a2) 11.5 g of Kingcova PU-20 (aqueous polyurethane dispersion, Guangzhou Liankai Powder Technology Co., Ltd.)

[0128] (b1) 3.0 g of DOWANOL DPM (film-forming aid, Dow Chemical)

[0129] (b2) 1.0 g 3.0 g DOWANOL DPNB (film-forming aid, Dow Chemical)

[0130] (c1) 0.5g LAPONITE XLS (thickener, Aoxue New Materials)

[0131] (c2) 1.7g 9241NP (thickener, Wanhua Chemical)

[0132] (d) 2.0 g of Kingpigment aq 116R; (a toner with a hydrophilic surface treatment but not dispersed with an aqueous polyurethane dispersion, Guangzhou Liankai Powder Technology Co., Ltd.)

[0133] (e1) 0.5 g Microcare PHG (preservative)

[0134] (e2) 0.5 g of MKB04509 (flavor)

[0135] (f) 5.8 g of water.

[0136] 2. Preparation method: After weighing the above components, use an IKA stirrer at 1000r / min for 2 hours to mix them evenly to make nail polish 5#.

[0137] Comparative Example 3 (compared with Example 2, the variable is that the toner is not subjected to hydrophilic surface treatment):

[0138] This comparative example provides a formula and preparation method of a water-based nail polish composition:

[0139] 1. Formulation: (a1) 73.5 g of Kingcova PU-101 (waterborne polyurethane dispersion, Guangzhou Liankai Powder Technology Co., Ltd.)

[0140] (a2) 11.5 g of Kingcova PU-20; (waterborne polyurethane dispersion, Guangzhou Liankai Powder Technology Co., Ltd.)

[0141] (b1) 3.0 g of DOWANOL DPM; (film-forming aid, Dow Chemical)

[0142] (b2) 1.0 g of 3.0 g of DOWANOL DPNB; (film-forming aid, Dow Chemical)

[0143] (c1) 0.5g LAPONITE XLS; (thickener, Aoxue New Materials)

[0144] (c2) 1.7g 9241NP; (thickener, Wanhua Chemical)

[0145] (d) 2.0 g of Kingpigment 710V; (ordinary color powder, Guangzhou Liankai Powder Technology Co., Ltd.)

[0146] (e1) 0.5 g Microcare PHG; (preservative)

[0147] (e2) 0.5 g of MKB04509; (flavor)

[0148] (f) 5.8 g of water.

[0149] 2. Preparation method: In the above groups, the color powder and the aqueous polyurethane dispersion in component (d) are ground and stirred and dispersed with a sand mill at a stirring speed of 2000 r / min to prepare a color paste, and then together with other components, they are stirred at a high speed of 1000 r / min with an IKA stirrer for 2 hours to make them evenly mixed to prepare nail polish 6#.

[0150] Performance Testing

[0151] The nail polishes 1# to 6# prepared in the above examples and comparative examples were tested for stability, and the results are shown in Table 1 below:

[0152] Mechanical stability: simulated by centrifugal accelerated sedimentation test. Pour appropriate amount of water-based nail polish into clean dry centrifuge tubes, put them into centrifuge, centrifuge at 3000r / min for 15min, if there is no precipitation after taking out the nail polish, it can be proved that the nail polish can be stably stored for 90 days.

[0153] Storage stability: Determined by heating accelerated delamination test simulation. Put the water-based nail polish in a 50℃ oven to observe whether delamination or color floating occurs. Taking the standing delamination or color floating time as the stability test standard, the water-based nail polish with poor stability will delaminate or float for several days or even as short as a few hours; the water-based nail polish with average stability will delaminate or float at high temperature for about half a month to one month; the nail polish with good stability will delaminate or float at high temperature for 2 to 3 months; the water-based nail polish with excellent stability will delaminate or float at high temperature for more than 3 months.

[0154] Table 1. Water-based nail polish stability test results:

[0155]

[0156] It can be seen from the data in Table 1 above that the water-based nail polish prepared by the preparation method of the present invention has good stability and strong color storage stability.

[0157] Obviously, the above embodiments are merely examples for clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the protection scope of the invention.

Claims

1. A method for preparing a composite modified color paste, characterized in that: The following steps are involved: S1, providing color powder slurry; S2, adjusting the color powder slurry to alkaline, heating and reacting to obtain a mixed slurry; S3, adding silicon dioxide powder to the mixed slurry, so that the silicon dioxide completely covers the surface of the toner to form a composite material of silicon dioxide-coated toner; S4, adding a hydrophilic surface modifier to the reaction slurry containing the composite material, so that the surface of the toner coated with silicon dioxide is coated with the hydrophilic surface modifier to obtain a composite modified toner; S5, adding the composite modified color powder into an aqueous polyurethane dispersion and adding water to obtain a composite modified color powder slurry, grinding, stirring and dispersing the composite modified color powder slurry to obtain the composite modified color paste.

2. The preparation method according to claim 1, characterized in that: In step S1, the concentration of the toner slurry is 100-200 g / L.

3. The preparation method according to claim 1, characterized in that: In step S2, the alkaline pH value of the toner slurry is 9 to 10; The conditions of the heating reaction are as follows: the heating temperature is 40-90° C., the time is 20-30 min, and the reaction stirring rate is 400-1000 r / min.

4. The preparation method according to claim 1, characterized in that: In step S3, the amount of silicon dioxide powder added is 0.5% to 5.0% of the mass of the toner; and the mixed slurry is stirred for 10 to 60 minutes.

5. The preparation method according to claim 1, characterized in that: In step S4, the amount of the hydrophilic surface modifier added is 1% to 10% of the mass of the toner; and the reaction slurry is stirred for 10 to 60 minutes; The hydrophilic surface modifier is selected from one or more of a silane coupling agent, a titanate coupling agent, a surfactant, a water-soluble polymer, an organic silicone oil, an unsaturated organic acid, and an inorganic surface modifier.

6. The preparation method according to claim 1, characterized in that: In step S5, the raw materials further include a thickening suspending agent, and the mass ratio of the composite modified color powder, the waterborne polyurethane and the thickening suspending agent is (10-15): (65-75): (0-2.0); The content of the toner in the composite modified toner slurry is 10wt% to 15wt%.

7. A composite modified color paste, characterized in that: Obtained by the preparation method according to any one of claims 1 to 6.

8. A water-based nail polish composition, comprising a film former, a film-forming aid, a thickener, an aid, and water, characterized in that: It also includes the composite modified color paste as described in claim 7.

9. The aqueous nail polish composition according to claim 8, characterized in that: Counting by mass, the film-forming agent comprises 65.0 to 80.0 parts, the film-forming auxiliary agent comprises 0 to 5.0 parts, the thickener comprises 1.0 to 3.0 parts, the composite modified color paste comprises 0.5 to 25.0 parts, the auxiliary agent comprises 0 to 3.0 parts, and the water comprises 0 to 34.0 parts.

10. The aqueous nail polish composition according to claim 8 or 9, characterized in that: The film former is selected from one or more of waterborne polyurethane dispersion and waterborne acrylic dispersion; The film-forming aid is selected from one or more of polyvinyl alcohol, dipropylene glycol methyl ether, and dipropylene glycol butyl ether; The thickener is one or more of HEUR thickener, acrylic thickener, cellulose thickener, bentonite, aluminum silicate, hectorite, and dispersible wax emulsion; The auxiliary agent is a water-soluble flavor and / or a broad-spectrum preservative.

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