CN112294695B - Aqueous nail polish based on polydopamine-coated aqueous polyurethane dispersion - Google Patents
Aqueous nail polish based on polydopamine-coated aqueous polyurethane dispersion Download PDFInfo
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
- A61K8/84—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions otherwise than those involving only carbon-carbon unsaturated bonds
- A61K8/87—Polyurethanes
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- A—HUMAN NECESSITIES
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- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
- A61K8/84—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions otherwise than those involving only carbon-carbon unsaturated bonds
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- A—HUMAN NECESSITIES
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- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q3/00—Manicure or pedicure preparations
- A61Q3/02—Nail coatings
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
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Abstract
The invention discloses an aqueous nail polish based on a polydopamine-coated aqueous polyurethane dispersion. The adhesive is prepared from the following components in parts by weight: (a) 80-100 parts by weight of a polydopamine-coated aqueous polyurethane dispersion; (b) 0.03-1 part by weight of a leveling agent; (c)0.03 to 1 part by weight of a wetting agent; (d)0.03 to 1 part by weight of a brightener; (e) 0.03-1 part by weight of a drier; (f)0.01 to 3 parts by weight of a thickener; (g) 0.01-10 parts by weight of pearling and/or color paste; (h) 0-3 parts by weight of an auxiliary agent. The water-based nail polish has the advantages of good quick drying property, luster, hardness, adhesive force, water resistance and the like, and no obvious dry-wet color difference.
Description
Technical Field
The invention relates to a water-based nail polish, in particular to a water-based nail polish based on a polydopamine-coated water-based polyurethane dispersion.
Background
Nail polish belongs to a large class of products in a color cosmetic series, has the function of beautifying and decorating nails, and currently, the nail polish used by people is divided into traditional solvent-type nail polish and emerging water-based nail polish.
The traditional solvent-type nail polish contains a large amount of irritant chemical components such as acetone, toluene and the like which are harmful substances, so that nails are easy to dry, yellow and crisp, the health of human bodies is influenced, and environmental pollution is caused. The principle of the solvent type nail polish attached to the surface of the nail is that the surface layer of the nail is firstly damaged, a plurality of rough small holes are formed on the surface, and the nail polish permeates into the concave holes. If the nail polish is used for a long time, pigments are easy to precipitate, nails are easy to turn yellow and crack, and a plurality of women loving beauty sacrifice health. Thus, aqueous nail polishes are produced at the same time. Generally, the aqueous nail polish is prepared by stirring and mixing additives such as water, an aqueous film forming agent, a pigment, an essence and the like. The environment-friendly and safe nail polish which is low in smell and irritation and does not cause dissolubility and corrosion to chemical fiber clothes and plastics can be obtained by properly blending the formula. However, the existing water-based nail polish is still not mature enough, and still has some defects, such as poor gloss, poor water resistance, poor adhesion, sticky nail polish surface after drying and the like, and cannot meet the requirements of consumers.
Chinese patent CN104758196B discloses a method for using an aqueous polyurethane dispersion as an aqueous nail polish, which can provide an aqueous nail polish product with rapid drying, high gloss and high fullness, but the adhesion of the product depends on an epoxy silane coupling agent and an amino silane coupling agent, but practice shows that because the content of the coupling agent in the nail polish formula is extremely low, the coupling agent cannot be effectively enriched between the nail polish and the nail surface in the formula when the nail polish is dried to form a film on the nail surface, and because hydrophilic groups of the coupling agent are distributed outwards in the water-based formula, the part needing to be connected with the nail surface faces inwards, and the coupling agent cannot be effectively opened on the nail surface in the drying process of the aqueous nail polish, the nail polish prepared by the method cannot achieve efficient combination with the nail surface, so that the adhesion of the nail polish cannot be effectively improved. And the single aqueous polyurethane dispersion is easy to swell by water after being filmed, thereby further reducing the adhesive force of the nail polish after being soaked in water.
Patent CN106074219B discloses a nail polish prepared by compounding polyurethane and polyacrylic resin, which utilizes the water resistance and hardness of polyacrylic resin to provide sufficient water resistance for nail polish due to the excellent cold resistance, elasticity and weather resistance of polyurethane, and further improves the hardness of nail polish by crosslinking when polyacrylic acid is formed into a film, but the nail polish is not well adhered to the nail surface because the nail polish cannot be effectively connected with the nail surface when the nail polish is formed into a film, and the final acceptance of consumers is not high.
Although the aqueous nail polish is a development trend of future nail polish products, at present, relatively few researches are carried out, and the development of an aqueous nail polish product which is quick to dry, high in gloss, good in adhesive force, strong in water resistance and high in hardness is urgently needed, so that the development demand of the market is met.
Disclosure of Invention
The invention aims to provide a water-based nail polish, wherein a transparent water-based polyurethane dispersion wrapped by polydopamine is used as a main component, and the water-based nail polish has good performances such as quick drying, luster, hardness, adhesive force, water resistance and the like, and has no obvious dry-wet color difference.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
the water-based nail polish is prepared from the following components in parts by weight:
(a) 80-100 parts by weight, preferably 85-95 parts by weight of polydopamine-coated aqueous polyurethane dispersion;
(b)0.03 to 1 part by weight, preferably 0.1 to 0.5 part by weight of a leveling agent;
(c)0.03 to 1 part by weight, preferably 0.1 to 0.5 part by weight of a wetting agent;
(d)0.03 to 1 part by weight, preferably 0.3 to 1 part by weight of a brightener;
(e) 0.03-1 part by weight, preferably 0.05-0.5 part by weight of a drier;
(f)0.01 to 3 parts by weight, preferably 0.5 to 2.5 parts by weight of a thickener;
(g) 0.01-10 parts by weight, preferably 1-5 parts by weight of pearly luster and/or color paste;
(h)0 to 3 parts by weight, preferably 0.1 to 2 parts by weight of an auxiliary.
In the aqueous nail polish, the aqueous polyurethane dispersion in the (a) is selected from aliphatic aqueous polyurethane dispersions with the number average molecular weight of 5000-15000 and the solid content of 20-50 wt%, and preferably polyol and H 12 MDI is used as raw material to synthesize the anionic aqueous polyurethane dispersoid. The mass ratio of the polyester polyol to the polyether polyol in the raw materials for synthesizing the aqueous polyurethane dispersion is 1: 9-9: 1.
The polyester polyol is obtained by reacting organic dicarboxylic acid or organic dicarboxylic anhydride with a stoichiometric excess of polyol, and has a number average molecular weight of 500-3000, preferably 1000-2500, and a functionality of 2-3. Wherein the organic dicarboxylic acid or organic dicarboxylic acid anhydride can be one or more of succinic acid or anhydride thereof, glutaric acid or anhydride thereof, adipic acid or anhydride thereof, pimelic acid or anhydride thereof, suberic acid or anhydride thereof, azelaic acid or anhydride thereof, sebacic acid or anhydride thereof, phthalic acid or anhydride thereof, isophthalic acid or anhydride thereof, and terephthalic acid or anhydride thereof, and the polyhydric alcohol can be one or more of ethylene glycol, 1, 2-propanediol, 1, 4-butanediol, 1, 3-butanediol, 1, 6-hexanediol, trimethylolpropane, and neopentyl glycol; the polyester polyols are preferably prepared using adipic acid and 1, 6-hexanediol with neopentyl glycol.
The polyether polyol has the number average molecular weight of 500-3000, preferably 1000-2500 and the functionality of 2-3. Suitable examples include, but are not limited to, one or more of polytetrahydrofuran polyol, polyethylene glycol polyol, polypropylene glycol polyol, polyethylene glycol-propylene glycol polyol, preferably polytetrahydrofuran polyol.
The particle size of the aqueous polyurethane dispersion is 10-100 nm, and preferably 20-80 nm.
The preparation method of the polydopamine-coated aqueous polyurethane dispersion comprises the following steps: taking 1-3 parts by weight of dopamine hydrochloride aqueous solution with the concentration of 50-500g/L, preferably 100-200g/L, adding the dopamine hydrochloride aqueous solution into 77-99 parts by weight of aqueous polyurethane dispersion, adding 5-25 wt% of NaOH solution to adjust the pH value to 8.0-8.5, stirring at 1000-1500rpm/min for 0.1-5h, preferably 0.5-2.5h, more preferably 40min-60min, then neutralizing the pH value to 3.0-7.0, preferably 5.0-5.5 by using acid, and increasing the particle size by 1-3nm through a dynamic light scattering test; the concentration of free dopamine in the aqueous polyurethane dispersion coated with polydopamine is made to be 0.3-3g/L, more preferably 0.3-2 g/L.
In the preparation method of the polydopamine-coated aqueous polyurethane dispersion, the acid is selected from one or more of citric acid, hydrochloric acid, phosphoric acid and acetic acid.
In an alkaline environment, dopamine is crosslinked into polydopamine and is deposited on the surfaces of the particles of the aqueous polyurethane dispersion, and after a specific coating time, the pH value is neutralized by acid. At the moment, free dopamine is not easy to polymerize under an acidic condition, so that the number of the free dopamine in the system is stable, and the amino group of the free dopamine exists in an ionized form, so that the free dopamine can easily generate an electrostatic effect with keratin on the nail in the using process of the nail polish, and the adhesiveness is further improved.
The method ensures that the coating layer of the polydopamine is extremely thin by controlling the concentration, the deposition time and the pH value of the dopamine, and the thickness of the coating layer is only 1-3nm in a dynamic light scattering test, so that the method still keeps extremely high transparency, and has the characteristics of high transparency, good film forming property, good adhesive force and the like after film forming. According to the method, after the polydopamine coating layer is formed, free dopamine is removed without adopting a centrifugal filtration method and the like, the pH value is adjusted to be acidic, and the concentration (preferably 0.3-3g/L, more preferably 0.3-2g/L) of the free dopamine in the system can be controlled, so that the polydopamine can be formed under the action of oxygen in the air after the water-based nail polish prepared by the method is coated, the bonding acting force between the water-based nail polish and the nail surface is stronger, and the adhesion performance of the water-based nail polish on the nail is improved.
In the aqueous nail polish of the present invention, the leveling agent (b) is a water-soluble leveling agent with low surface energy and low molecular weight, and when the aqueous nail polish is used in the aqueous nail polish, the rapid leveling effect can be provided, and YCK1110 of the shanghai YCK company is preferred.
In the aqueous nail polish, the wetting agent (c) is a low-VOC (volatile organic compound) and APEO (alkylphenol ethoxylates) -free medium-low-foam wetting agent, which is beneficial to improving the compatibility and tinting strength of color paste and nail polish, and preferably Craine LCN 407.
In the aqueous nail polish of the invention, the brightening agent (d) is one or more of water-soluble silicone oil, the preferable water-soluble silicone oil is water-soluble silicone oil modified by polyether, alkyl, amino, carboxyl, epoxy, methyl propenyl or phenol group and the like, and one or two of Dow Corning 2-1352 emulsion and Copo 204 emulsion are more preferable. The water-soluble silicone oil has good water dispersibility, can obviously improve the luster, smoothness and hand feeling of the water-based nail polish product, and has the function of nourishing nails.
In the aqueous nail polish of the present invention, the (e) drier is selected from one or more of zinc octoate, cobalt octoate, magnesium octoate, iron octoate, cobalt naphthenate, nickel naphthenate, manganese naphthenate, calcium naphthenate and potassium naphthenate, preferably one or more of zinc octoate, cobalt octoate, magnesium octoate and iron octoate. The nail polish is dried into a film by volatilization of a solvent, and the drying speed of the nail polish can be increased only by accelerating the volatilization of water-based components of the nail polish; in addition, in order to allow the nail polish to be smoothly applied to the nails, a hard film must be formed on the surface thereof, but the hard film cannot be formed too quickly, and if the hard film is formed too quickly, the coloring matter thereunder cannot be dried out. The amount of siccative used must therefore be strictly controlled.
In the water-based nail polish, the thickener (f) is one or more of HEUR thickeners, acrylic thickeners, cellulose ether thickeners, bentonite, hectorite and dispersible wax emulsion, preferably nonionic HEUR thickeners, bentonite and polyethylene wax emulsion with the solid content of 20-65 wt% are compounded and used according to the mass percentage of 30-70 wt%, 15-35 wt% and 15-35 wt%. The thickening agent of the invention selects HEUR thickening agent, acrylic acid thickening agent, cellulose ether thickening agent, bentonite, hectorite and dispersible wax emulsion, wherein the bentonite, the hectorite and the dispersible wax emulsion can stabilize and prevent the pearly luster and the pearly luster in the nail polish from settling, and the HEUR thickening agent, the acrylic acid thickening agent and the cellulose ether thickening agent can ensure that the nail polish has excellent leveling property and fullness, particularly the nonionic HEUR thickening agent, the bentonite and the polyethylene wax emulsion are compounded according to the proportion to ensure that the prepared water nail polish has excellent anti-settling property and excellent aesthetic feeling.
In the water-based nail polish, the color paste (g) is water-soluble color paste, and the pearly luster can be pearl powder or can be directly added into the water-based nail polish.
In the aqueous nail polish, the auxiliary agent (h) is water-soluble essence and/or a broad-spectrum preservative.
The aqueous nail polish of the invention does not contain film-forming additives.
Compared with the prior art, the aqueous nail polish provided by the invention does not need to be added with a film-forming aid with pungent smell, really achieves aqueous environmental protection, low smell and high stability, can obtain fragrance similar to perfume after being added with essence, greatly improves the compatibility of a polydopamine-coated polyurethane formula, particularly obviously improves the compatibility with some color pastes, fillers and ionic thickening agents, further greatly improves the stability of the formula, and reduces the difficulty in adjusting the formula. And due to the excellent biocompatibility of the polydopamine, the biological sensitivity of polyurethane particles is greatly reduced, and the use safety of the methyl oil is obviously improved.
In the invention, dopamine forms polydopamine through oxidation in an alkaline environment, a relatively compact protective layer is deposited on the surface of polyurethane, the thickness is moderate and is about 1-3nm (the shell layer is too thin and cannot form effective package, so that resin emulsion particles are easy to swell by water molecules after being formed into a film, the water resistance is greatly reduced, and the glossiness and the dry-wet color difference of the nail polish after the film is formed are greatly influenced due to the change of the refractive indexes of the inner layer and the outer layer when the shell layer is too thick). After the water-based nail polish is brushed on a nail to form a film, because the polydopamine on the surface of the polyurethane dispersion body can form enough connecting points with the nail surface after the nail polish is formed into the film, the strong hydrogen bonding action of the coating layer of the polydopamine and keratin on the nail surface enables the water-based nail polish to have excellent adhesion on the nail; and because polydopamine on the surface of the polyurethane dispersion body forming the nail polish exists, the polyurethane dispersion body is ensured not to be dissolved and swelled by water, so the nail polish has good water resistance.
The dopamine used in the invention has extremely short deposition time (generally 0.1-5h, preferably 0.5-2.5h, and more preferably 40min-60min), so that the formula operation efficiency of the aqueous nail polish is effectively improved. According to the method, the polydopamine is deposited and rapidly stirred in the dopamine solution, so that the polydopamine is prevented from causing over-thick coating due to too long deposition time and further influencing the film forming property (further influencing the adhesive force and water resistance) of latex particles, a compact film can be formed on the surface of polyurethane particles, and the water resistance and adhesion of the water-based nail polish are effectively improved. In the method, free dopamine is not required to be removed centrifugally after the dopamine is deposited (the method can ensure that the concentration of the free dopamine is 0.3-3g/L, more preferably 0.3-2g/L, the lower concentration of the free dopamine cannot provide a more effective adhesion improving effect, so that the effect after the nail polish is soaked in water is reduced, when the concentration of the free dopamine is too high, the content of polyamine on the surface of the aqueous polyurethane dispersion is too low, and sufficient binding force cannot be formed when the aqueous nail polish is dried into a film), and the nail polish can be directly further prepared, so that the utilization rate of the dopamine is greatly improved. After the nail polish is coated, because small molecules have strong movement capacity, the dopamine formed after oxidation can be enriched at the incomplete joint of the nail polish and the nail surface to provide binding power, so that the adhesion of the nail polish on the nail is further improved, and meanwhile, the hardness of the polyurethane after film formation is obviously improved due to the existence of the binding power between free polydopamine.
Detailed Description
The method according to the invention will be further illustrated by the following examples, but the invention is not limited to the examples listed, but also encompasses any other known modification within the scope of the claims of the invention.
The raw materials used were as follows:
CMA-654: (poly adipic acid neopentyl glycol hexanediol ester dihydric alcohol, hydroxyl value is 74.8mgKOH/g, number average molecular weight is approximately equal to 1500g/mol, functionality is 2, large chemistry of Betula warfara);
PTMG1000 (polytetrahydrofuran diol, number average molecular weight ≈ 1000g/mol, functionality 2, Mitsubishi Japan)
NPG (neopentyl glycol, Vanhua chemical group, Inc.);
EDA (ethylenediamine, BASF, germany);
YCK1110 (leveling agent, shanghai YCK corporation);
LCN407 (humectant, clariant);
2-1352 emulsion (brightener, dow corning company);
bentonite (thickener, Sinkiang Jinlong building materials, Limited liability company);
KH-560 (epoxysilane coupling agent, Yi Xin plastification);
z-6020 (aminosilane coupling agent, Dow Corning Co.);
aldehyde ketone resins (hardeners, Zibo homo Ring Fine chemical Co., Ltd.);
SM-9815 (Red color paste, world name);
AG300 (gold pearl, angry pigment);
TCW2890404 (essence, lihua essence ltd);
dmdmdmh (preservative, dow chemical).
Method for testing the content of free dopamine in emulsion: centrifuging at 15000rpm/min for 30min, and measuring dopamine content in the supernatant by ultraviolet spectrophotometer (using the maximum absorption of reaction product of dopamine and sodium nitrite at pH 5.9 at 300nm, preparing standard dopamine solution, measuring linear regression equation of 300nm absorption value, and measuring dopamine content in the centrifuged supernatant).
Products used in examples and comparative examples:
the aqueous polyurethane dispersion was synthesized by the following method: 65g of CMA-654 (Nitzschia chemical), 2.5g of neopentyl glycol and 10g of PTMG1000 (Mitsubishi, Japan) were put into a four-necked flask, mixed and stirred at 70 ℃ for 10min, cooled to 50 ℃ and added with 19g of the mixture
HDI reaction, tested about NCO% ═ 2.95 wt% prepolymer, cooled to 40 ℃, dissolved in 150g acetone solvent, mixed for 15min, 0.7g eda and 5g were added
A95 in 15g deionized water, continuing to react for 30min at 45 ℃, adding 210g water under the condition of shear dispersion, then distilling under reduced pressure to remove acetone to obtain the aqueous polyurethane dispersion PUD-1 with the solid content of about 35 wt%, and the particle size is 30nm as measured by dynamic light scattering.
1# polydopamine-coated aqueous polyurethane dispersion: 2g of 100g/L dopamine hydrochloride is added into 92g of prepared PUD-1, 20wt% of NaON is added to adjust the pH value to 8.5, after 1500r/min of rapid stirring is carried out for 40min, 50wt% of citric acid is added to adjust the pH value to 5.5, the particle size is 31nm measured by a dynamic light scattering method, after 30min of centrifugation at the speed of 15000rpm/min, the concentration of free dopamine in a supernatant is measured by measuring the dopamine content in the supernatant by an ultraviolet spectrophotometer method, and the concentration of the free dopamine in the supernatant is about 1.4 g/L.
2# polydopamine-coated aqueous polyurethane dispersion: adding 1g of 150g/L dopamine hydrochloride into 89g of prepared PUD-1, adding 20wt% NaON to adjust the pH value to 8.5, rapidly stirring at 1500r/min for 50min, and adding 50wt% citric acid to adjust the pH value to 5.0; the particle size was 32nm as determined by dynamic light scattering, and the concentration of free dopamine in the supernatant was about 0.5g/L as determined by UV spectrophotometry after centrifugation at 15000rpm/min for 30 min.
3# polydopamine coated aqueous polyurethane dispersion: adding 2g of 100g/L dopamine hydrochloride into 90g of prepared PUD-1, adding 20wt% NaON to adjust the pH value to 8.0, quickly stirring for 1h at 1500r/min, adding 50wt% citric acid to adjust the pH value to 5.0, measuring the particle size to be 33nm by dynamic light scattering, centrifuging for 30min at the speed of 15000rpm/min, and measuring the concentration of free dopamine in a supernatant to be about 0.35g/L by adopting an ultraviolet spectrophotometer method.
4# polydopamine-coated aqueous polyurethane dispersion: 1.7g of 200g/L dopamine hydrochloride is added into 93.3g of prepared PUD-1, 20wt% of NaON is added to adjust the pH value to 8.0, after 1500r/min of rapid stirring for 5min, 50wt% of citric acid is added to adjust the pH value to 5.5, the particle size is 30.1nm measured by dynamic light scattering, after 30min of centrifugation at the speed of 15000rpm/min, the concentration of free dopamine in a supernatant is measured to be about 3.1g/L by adopting an ultraviolet spectrophotometer method.
5# polydopamine-coated aqueous polyurethane dispersion: 1.7g of 200g/L dopamine hydrochloride is added into 93.3g of prepared PUD-1, 20wt% of NaON is added to adjust the pH value to 8.0, after 1500r/min of rapid stirring is carried out for 5.5h, 50wt% of citric acid is added to adjust the pH value to 5.5, the particle size is 35nm measured by dynamic light scattering, after 30min of centrifugation at the speed of 15000rpm/min, the concentration of free dopamine in a supernatant is measured to be about 0.2g/L by adopting an ultraviolet spectrophotometer method.
6# polydopamine-coated aqueous polyurethane dispersion: adding 100g/L dopamine hydrochloride 2g into PUD-1 90g, adding NaON 20wt% to adjust pH to 8.0, rapidly stirring at 1500r/min for 1h, standing for two days, measuring particle diameter to 35nm by dynamic light scattering, centrifuging at 15000rpm/min for 30min, and measuring the concentration of free dopamine in the supernatant to be about 0.15g/L by ultraviolet spectrophotometer.
The formulations of the raw materials of examples 1 to 3 and comparative examples 1 to 5 are shown in Table 1, and after mixing the components according to the formulation of Table 1, the components were uniformly mixed by using an IKA stirrer at a high speed of 1000r/min for 2 hours to prepare nail polish.
TABLE 1 raw material formulation of examples and comparative examples
The aqueous nail varnishes prepared in the above examples and comparative examples were subjected to relevant performance tests; the glass plate was dried at room temperature for 24 hours and then tested, with a film thickness of 100. mu.m.
Surface dry time test: finger touch method, constant temperature and humidity chamber with 80% humidity and 20 deg.C;
gloss testing: carrying out a gloss test on a black glass plate at an incident angle of 60 degrees;
and (3) testing pencil hardness: testing by a 750g loading pencil hardness tester;
and (3) testing adhesive force: the embroidery needle No. 9 is divided into 5 rows at intervals of 1mm, the 5 rows are vertically divided, and the division is 1-10 according to the starting edge condition, wherein 1 is the worst, and 10 is the best;
water resistance test: and (3) putting the film-formed glass plate into water at room temperature for 30min, and scoring for 1-10 minutes by observing the edge rising phenomenon, wherein 1 minute is worst, and 10 minutes is best.
Dry-wet color difference: the color change before and after the nail polish is painted and dried is graded for 1-10 points, the color difference of 1 point is most obvious, and the color difference of 10 points is completely zero.
The results of the aqueous nail polish test are shown in table 2.
Table 2 test results for aqueous nail polish
From the above results, it can be seen that: the water-based nail polish formula can have excellent performances such as luster, pencil hardness, adhesive force and water resistance, and has no obvious influence of dry-wet color difference.
Claims (14)
1. The water-based nail polish comprises the following components in parts by weight:
(a) 80-100 parts by weight of a polydopamine-coated aqueous polyurethane dispersion;
(b) 0.03-1 part by weight of a leveling agent;
(c)0.03 to 1 part by weight of a wetting agent;
(d)0.03 to 1 part by weight of a brightener;
(e) 0.03-1 part by weight of a drier;
(f)0.01 to 3 parts by weight of a thickener;
(g) 0.01-10 parts by weight of pearling and/or color paste;
(h) 0-3 parts by weight of an auxiliary agent;
the preparation method of the polydopamine-coated aqueous polyurethane dispersion of the component (a) comprises the following steps: taking 1-3 parts by weight of dopamine hydrochloride aqueous solution with the concentration of 50-500g/L, adding the dopamine hydrochloride aqueous solution into 77-99 parts by weight of aqueous polyurethane dispersion, adding 20-25wt% of NaOH solution to adjust the pH value to 8.0-8.5, stirring at 1500rpm/min for 0.1-5h, then neutralizing the pH value to 3.0-7.0 by adopting acid, and increasing the particle size by 1-3nm through a dynamic light scattering test; the concentration of free dopamine in the polydopamine-coated aqueous polyurethane dispersion is 0.3-3 g/L.
2. The aqueous nail polish of claim 1, comprising the following components in parts by weight:
(a) 85-95 parts by weight of a polydopamine-coated aqueous polyurethane dispersion;
(b) 0.1-0.5 parts by weight of a leveling agent;
(c) 0.1 to 0.5 parts by weight of a wetting agent;
(d) 0.3 to 1 part by weight of a brightener;
(e) 0.05-0.5 part by weight of a drier;
(f) 0.5-2.5 parts by weight of a thickener;
(g) 1-5 parts by weight of pearly luster and/or color paste;
(h) 0.1-2 parts by weight of an auxiliary agent.
3. The aqueous nail polish of claim 1, wherein the aqueous polyurethane dispersion of (a) is selected from aliphatic aqueous polyurethane dispersions having a number average molecular weight of 5000 to 15000 and a solid content of 20 to 50 wt%.
4. The aqueous nail polish of claim 1, wherein the aqueous polyurethane dispersion of (a) is a mixture of polyol and H 12 MDI is used as raw material to synthesize the anionic aqueous polyurethane dispersoid.
5. The aqueous nail polish of claim 4, wherein the polyol of the aqueous polyurethane dispersion in (a) is a polyester polyol and a polyether polyol in a mass ratio of 1: 9-9: 1.
6. The aqueous nail polish of claim 5, wherein the polyester polyol has a number average molecular weight of 500 to 3000 and a functionality of 2 to 3; the polyether polyol has a number average molecular weight of 500-3000 and a functionality of 2-3.
7. The aqueous nail polish of claim 5, wherein the polyester polyol has a number average molecular weight of 1000 to 2500 and a functionality of 2 to 3; the polyether polyol has a number average molecular weight of 1000-2500 and a functionality of 2-3.
8. The aqueous nail polish of claim 5, wherein the polyester polyol is obtained by reacting an organic dicarboxylic acid or an organic dicarboxylic acid anhydride selected from one or more of succinic acid or anhydride thereof, glutaric acid or anhydride thereof, adipic acid or anhydride thereof, pimelic acid or anhydride thereof, suberic acid or anhydride thereof, azelaic acid or anhydride thereof, sebacic acid or anhydride thereof, phthalic acid or anhydride thereof, isophthalic acid or anhydride thereof, and terephthalic acid or anhydride thereof with a stoichiometric excess of a polyol selected from one or more of ethylene glycol, 1, 2-propanediol, 1, 4-butanediol, 1, 3-butanediol, 1, 6-hexanediol, trimethylolpropane, and neopentyl glycol.
9. The aqueous nail polish of claim 5, wherein the polyether polyol is selected from one or more of polytetrahydrofuran polyol, polyethylene glycol polyol, polypropylene glycol polyol, polyethylene glycol-propylene glycol polyol.
10. The aqueous nail polish of claim 1, wherein the particle size of the aqueous polyurethane dispersion is 10 to 100 nm.
11. The aqueous nail polish of claim 1, wherein the particle size of the aqueous polyurethane dispersion is 20 to 80 nm.
12. The aqueous nail varnish according to claim 1, wherein the component (a), the polydopamine coated aqueous polyurethane dispersion, is prepared by a process comprising the following steps: taking 1-3 parts by weight of dopamine hydrochloride aqueous solution with the concentration of 100-200g/L, adding the dopamine hydrochloride aqueous solution into 77-99 parts by weight of aqueous polyurethane dispersion, adding 20-25wt% of NaOH solution to adjust the pH value to 8.0-8.5, stirring at 1000-1500rpm/min for 0.5-2.5h, then neutralizing the pH value to 5.0-5.5 by adopting acid, and testing the particle size to increase by 1-3nm through dynamic light scattering; the concentration of free dopamine in the polydopamine-coated aqueous polyurethane dispersion is 0.3-2 g/L.
13. The aqueous nail polish of claim 1, wherein the stirring is for a period of 40min to 60 min.
14. The aqueous nail polish of claim 1, wherein the aqueous nail polish is free of film forming aids.
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| EP3193815A4 (en) * | 2014-09-17 | 2018-10-31 | SafeWhite, Inc. | Methods and materials for delivering agents to hair, skin, or nails |
| CN105342880A (en) * | 2015-10-26 | 2016-02-24 | 合肥思敬齐化工材料有限责任公司 | 3D magnetic nail polish based on waterborne polyurethane dispersoid and preparation method of 3D magnetic nail polish |
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