Water-in-oil non-emulsified liquid foundation and preparation method thereof

Abstract

The invention discloses a water-in-oil non-emulsified liquid foundation and a preparation method thereof.The non-emulsified liquid foundation is prepared from, by weight, 19-31 parts of an emollient, 1.502-2.06 parts of a skin conditioner and 1.7-2.7 parts of a thickening agent, the emollient is prepared from 2.5-5 parts of PCA polydimethylsiloxane and 10-15 parts of polydimethylsiloxane, and the thickening agent is prepared from 10-15 parts of a water-in-oil non-emulsified liquid foundation; the skin conditioning agent is prepared from the following components in parts by weight: 1.5 to 2.0 parts of vinyl polydimethylsiloxane / polymethylsiloxane silsesquioxane cross-linked polymer; the thickening agent is prepared from 0.7 to 1.0 part of silica dimethyl silylate. The liquid foundation disclosed by the invention has the characteristic that the liquid foundation can still keep uniform and stable quality, appearance and water-in-oil form without an emulsifier.

Description

Technical Field

[0001] The invention relates to a non-emulsified liquid foundation, in particular to a water-in-oil non-emulsified liquid foundation and a preparation method thereof. Background Art

[0002] Liquid foundation is a type of facial beauty cosmetics. It is evenly adhered to the face through smearing and patting techniques to form a smooth covering layer, thereby adjusting the skin texture, color, and radiance and evens out skin tone.

[0003] Liquid foundation is a type of facial cosmetic base makeup product. Its main formula form is oil-in-water (O / W) or water-in-oil (W / O). It is a kind of emulsion or cream-like cosmetics with functional powder added. The formula basically includes emulsifiers, moisturizers, functional additives, thickeners, colorants, moisturizers, emulsion stabilizers, preservatives, deionized water and flavors. The emulsifier in the formula mainly plays a role in stabilizing the formula and combining water and oil into a stable and uniform material. However, due to its viscous nature, emulsifiers can easily cause irritation to sensitive skin, and make the skin feel and oiliness of liquid foundation products thick and heavy, not refreshing and light enough.

[0004] The existing patent application number CN202010690397.7 discloses a dispersed liquid foundation and a preparation method thereof, and specifically discloses a dispersed liquid foundation: including 4-6 parts of moisturizer, 0.2-0.5 parts of water phase thickener, 1-4 parts of skin conditioner, 4-8 parts of emollient and 0.9-2.5 parts of oil phase thickener; the water phase thickener includes polyacrylate cross-linked polymer-6, and the oil phase thickener includes magnesium stearate, C30-45 alkyl polymethylsiloxane / C30-45 olefin and cyclopentasiloxane / disteardimethylammonium hectorite / propylene carbonate. The above patent discloses a dispersed liquid foundation, using polyacrylate cross-linked polymer-6 as a water phase thickener, so that the oil phase components are more evenly and stably dispersed in the system, and a uniform and stable emulsified product can be produced without adding an emulsifier, avoiding the sticky skin feeling brought by the emulsifier and effectively reducing the irritation of the product.

[0005] However, the above scheme is aimed at a dispersed liquid foundation of an oil-in-water system, and C30-45 alkyl polymethylsiloxane is used as an emulsifier, and no research is conducted on a liquid foundation of an oil-in-water system. Since the liquid foundation of an oil-in-water system and the liquid foundation of an oil-in-water system are two different systems, the liquid foundation of an oil-in-water system is more difficult to stabilize after losing the emulsifier. Therefore, it is also difficult to obtain a non-emulsified liquid foundation of an oil-in-water system based on the known dispersed liquid foundation of an oil-in-water system. Summary of the invention

[0006] The purpose of the present invention is to provide an oil-in-water non-emulsified foundation liquid and a preparation method thereof. The foundation liquid of the present invention has the characteristics of being able to maintain uniform and stable quality, appearance and oil-in-water form without emulsifier.

[0007] The technical solution of the present invention is: an oil-in-water non-emulsified liquid foundation, which comprises, by weight, 19-31 parts of an emollient, 1.502-2.06 parts of a skin conditioner and 1.7-2.7 parts of a thickener, wherein the emollient comprises 2.5-5 parts of PCA polydimethylsiloxane and 10-15 parts of polydimethylsiloxane; the skin conditioner comprises 1.5-2.0 parts of a vinyl polydimethylsiloxane / polymethylsiloxane silsesquioxane cross-linked polymer; and the thickener comprises 0.7-1.0 parts of silica dimethyl silylate.

[0008] In the aforementioned oil-in-water non-emulsified liquid foundation, the emollient further comprises 4-6 parts of caprylic / capric triglyceride and 3-5 parts of isohexadecane.

[0009] In the aforementioned oil-in-water non-emulsified liquid foundation, the skin conditioning agent further comprises 0.001-0.03 parts of tetrahydromethylpyrimidine carboxylic acid and 0.001-0.03 parts of phytosteryl macadamia oleate.

[0010] In the aforementioned oil-in-water non-emulsified liquid foundation, the thickener further comprises 0.5-0.7 parts of quaternary ammonium salt-18 hectorite and 0.5-1.0 parts of sodium chloride.

[0011] In the aforementioned oil-in-water non-emulsified liquid foundation, the liquid foundation further comprises a moisturizer, a solvent and a surface treatment agent.

[0012] In the aforementioned oil-in-water non-emulsified liquid foundation, the liquid foundation further comprises a preservative, a colorant and a film-forming agent.

[0013] In the aforementioned oil-in-water non-emulsified foundation, the moisturizer includes 2-6 parts of glycerin, 1-5 parts of butylene glycol, 0.1-0.2 parts of sodium hyaluronate, and 0.3-0.5 parts of hexylene glycol; the solvent includes 45-55 parts of deionized water and 0.15-0.35 parts of triethyl citrate; and the surface treatment agent includes 0.1-0.5 parts of aluminum hydroxide and 0.1-0.5 parts of triethoxycaprylylsilane.

[0014] In the aforementioned oil-in-water non-emulsified foundation liquid, the preservative includes 0.3-0.5 parts of p-hydroxyacetophenone; the colorant includes 8-10 parts of titanium dioxide, 0-10 parts of yellow iron oxide, 0-10 parts of red iron oxide, and 0-10 parts of black iron oxide; and the film-forming agent includes 1.5-4.5 parts of acrylic acid (ester) copolymer.

[0015] The method for preparing the above-mentioned oil-in-water non-emulsified liquid foundation comprises the following steps of preparing the oil-in-water liquid foundation:

[0016] S1. Mix the colorant and the surface treatment agent, add caprylic / capric triglyceride, stir evenly, and grind to obtain phase A;

[0017] S2, mixing phase A and PCA polydimethylsiloxane, polydimethylsiloxane, isohexadecane, vinyl polydimethylsiloxane / polymethylsiloxane silsesquioxane crosspolymer, phytosteryl macadamia oleate, film former, quaternary ammonium salt-18 hectorite, silica dimethyl silylate, and triethyl citrate evenly, and heating to 70-75° C. to obtain an oil phase;

[0018] S3, mixing deionized water, sodium chloride, moisturizer, preservative, and tetrahydromethylpyrimidine carboxylic acid, and heating to 70-80° C. to obtain an aqueous phase;

[0019] S4. Add the water phase to the oil phase while stirring, homogenize, cool to below 45°C, add fragrance, stir evenly, and obtain the finished product.

[0020] In the above-mentioned preparation method, the homogenization speed in step S2 is 1000-3000 rpm / min, and the homogenization time is 8-12 min; the homogenization speed in step S3 is 1000-3000 rpm / min, and the homogenization time is 2-5 min.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The present invention adopts a specific proportion of PCA polydimethylsiloxane to replace the emulsifier, adjusts the surface tension of the oil phase to be close to the water phase, so that water and oil can be evenly compatible and achieve emulsification effect; adopts a certain proportion of oil phase suspension thickener dimethyl silylate silica and skin conditioning agent ingredients vinyl polydimethylsiloxane / polymethylsiloxane silsesquioxane crosslinked polymer and other basic oils, so that the formula liquid foundation reaches a more stable and uniform state.

[0023] By using the oil-in-water preparation process with the above-mentioned ingredients in the above proportion, a stable non-emulsified oil-in-water liquid foundation is obtained, which has a uniform and stable appearance and a stable use effect.

[0024] When using this product, there is no need for pre-treatment, no need to shake with steel balls, and no need to use air cushion sponges to stabilize the formula; it saves operating steps, is easier to use, reduces the cost of materials used in conjunction with the liquid foundation, and reduces data waste.

[0025] Therefore, the liquid foundation of the present invention has the characteristics of being able to maintain uniform and stable quality, appearance and oil-in-water form without an emulsifier. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the appearance of the liquid foundations of Example 1 and different comparative examples prepared by the present invention after centrifugation. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with the embodiments, but they are not intended to limit the present invention.

[0028] Example:

[0029] The invention discloses an oil-in-water non-emulsified liquid foundation, which comprises, by weight, 3.4-11.7 parts of a moisturizer, 19-31 parts of an emollient, 1.502-2.06 parts of a skin conditioner, 1.7-2.7 parts of a thickener, 0.01-0.1 parts of a fragrance, 0.3-0.5 parts of a preservative, 45.15-55.35 parts of a solvent, 8-40 parts of a colorant, 1.5-4.5 parts of a film former and 0.2-1 parts of a surface treatment agent.

[0030] The moisturizing agent comprises 2-6 parts of glycerin, 1-5 parts of butylene glycol, 0.1-0.2 parts of sodium hyaluronate and 0.3-0.5 parts of hexylene glycol, and plays the role of moisturizing the skin.

[0031] The emollient comprises 2.5-5 parts of PCA polydimethylsiloxane, 10-15 parts of polydimethylsiloxane, 4-6 parts of caprylic / capric triglyceride and 3-5 parts of isohexadecane; it plays the role of providing moisture and protection for the skin surface and provides an oil phase for the liquid foundation of the formula system.

[0032] The skin conditioning agent comprises 0.001-0.03 parts of tetrahydromethylpyrimidine carboxylic acid, 0.001-0.03 parts of phytosteryl macadamia oleate, and 1.5-2.0 parts of vinyl dimethicone / polymethicone silsesquioxane cross-linked polymer; it has the effects of soothing the skin and controlling oil.

[0033] The thickener comprises 0.5-0.7 parts of quaternary ammonium salt-18 hectorite, 0.5-1.0 parts of sodium chloride and 0.7-1.0 parts of dimethyl silylate silica, and plays the role of increasing the consistency of the product and ensuring that the product is in a stable state.

[0034] The solvent includes 45-55 parts of deionized water and 0.15-0.35 parts of triethyl citrate.

[0035] The colorant includes 8-10 parts of titanium dioxide (CI 77891), 0-10 parts of yellow iron oxide (CI 77492), 0-10 parts of red iron oxide (CI 77491), and 0-10 parts of black iron oxide (CI 77499).

[0036] The aromatic agent includes 0.01-0.1 parts of essence.

[0037] The preservative includes 0.3-0.5 parts of p-hydroxyacetophenone, which plays a role in inhibiting the growth and reproduction of microorganisms and maintaining the stability of the properties of the cosmetics.

[0038] The film-forming agent comprises 1.5-4.5 parts of acrylic acid (ester) copolymer, which plays the role of waterproof and long-lasting makeup and improves the skin adhesion of the product.

[0039] The surface treatment agent comprises 0.1-0.5 parts of aluminum hydroxide and 0.1-0.5 parts of triethoxyoctylsilane; the surface treatment agent is used to treat the surface of the colorant, enhance the skin adhesion and stability of the liquid foundation, and increase the oil absorption of the liquid foundation.

[0040] The method for preparing the above-mentioned water-in-oil non-emulsified liquid foundation comprises the following steps:

[0041] S1. Mix the colorant ingredients titanium dioxide (CI 77891), red iron oxide (CI 77491), yellow iron oxide (CI77492), black iron oxide (CI 77499) and the surface treatment agent ingredients aluminum hydroxide and triethoxycaprylylsilane, add the emollient ingredient caprylic / capric triglyceride and stir evenly, then grind it on a three-roll mill for 3-4 times to obtain phase A;

[0042] S2, mixing phase A and emollient ingredients PCA polydimethylsiloxane, polydimethylsiloxane, isohexadecane, skin conditioning ingredients vinyl polydimethylsiloxane / polymethylsiloxane silsesquioxane crosspolymer, phytosteryl macadamia oleate, film former ingredient acrylic acid (ester) copolymer, thickener ingredient quaternary ammonium salt-18 hectorite, dimethyl silica silylate, and solvent ingredient triethyl citrate, homogenizing at a homogenizing speed of 1000-3000 rpm / min for 8-12 min, and then heating to 70-75° C. to obtain an oil phase;

[0043] S3, mixing deionized water as a solvent component, sodium chloride as a thickener component, glycerin, butylene glycol, hexylene glycol, sodium hyaluronate as moisturizer components, p-hydroxyacetophenone as a preservative component, and tetrahydromethylpyrimidine carboxylic acid as a skin conditioning agent component, and heating the mixture to 70-80° C. to obtain an aqueous phase;

[0044] S4. After adding the water phase to the oil phase while stirring, homogenize at a homogenization speed of 1000-3000 rpm / min for 2-5 min, cool to below 45° C., add the fragrance ingredient essence, stir evenly, and obtain the finished product.

[0045] According to the above method, different embodiments and comparative examples were prepared. The formulas of the embodiments and comparative examples are shown in Table 1. The viscosity and appearance after centrifugation of the different embodiments and comparative examples were tested. The test results are shown in Tables 2 and Figure 1 .

[0046] Table 1. Liquid foundation formulas of different test groups

[0047]

[0048]

[0049]

[0050] Table 2. Results of foundation testing in different test groups

[0051]

[0052] Compared with Example 1, Comparative Example 1 differs in that: no silica dimethyl silylate is added to the liquid foundation formula, the ratio of vinyl polydimethylsiloxane / polymethylsiloxane silsesquioxane cross-linked polymer is reduced, and the content of polydimethylsiloxane is increased; the results show that Example 1 has better stability, and some precipitation occurs in Comparative Example 1, indicating that adding silica dimethyl silylate to the liquid foundation and adjusting the ratio of vinyl polydimethylsiloxane / polymethylsiloxane silsesquioxane cross-linked polymer can avoid oil-water separation of the liquid foundation.

[0053] The difference between Comparative Example 2 and Example 1 is that no silica dimethyl silylate is added to the liquid foundation formula, and the content of polydimethylsiloxane is increased; the results show that oil precipitation occurs in Comparative Example 2, indicating that adding silica dimethyl silylate to the liquid foundation helps stabilize the liquid foundation formula.

[0054] Compared with Example 1, Comparative Example 3 differs in that: no vinyl dimethicone / polymethicone silsesquioxane crosslinked polymer is added to the liquid foundation formula, and the content of polydimethicone is increased; the results show that oil precipitation is obvious in Comparative Example 3, indicating that adding vinyl dimethicone / polymethicone silsesquioxane crosslinked polymer to the liquid foundation helps stabilize the liquid foundation product.

[0055] The difference between Comparative Example 4 and Example 1 is that the content of silica dimethyl silylate in the liquid foundation formula is lower, and the content of polydimethylsiloxane is increased; the results show that oil precipitation occurs in Comparative Example 4, indicating that adding a certain content of silica dimethyl silylate to the liquid foundation formula is more conducive to the stability of the formula.

[0056] Compared with Example 1, Comparative Example 5 has the following differences: the PCA content of polydimethylsiloxane in the liquid foundation formula is lower, and the content of polydimethylsiloxane is increased; the results show that oil is slightly precipitated in Comparative Example 5, indicating that adding a certain content of PCA polydimethylsiloxane to the liquid foundation formula can help improve product stability.

[0057] Compared with the embodiment, the difference between Comparative Example 6 is that the liquid foundation formula does not contain PCA polydimethylsiloxane, and the content of polydimethylsiloxane is increased; the results show that the oil and water in Comparative Example 6 are separated and a uniform material body cannot be prepared, indicating that PCA polydimethylsiloxane is the main component affecting the stability of the product.

[0058] Compared with Example 1, the difference between Comparative Example 7 is that the usage ratio of PCA polydimethylsiloxane in the liquid foundation formula is higher and the content of polydimethylsiloxane is reduced; the results show that the stability of Example 1 and the comparative example is equivalent, but the viscosity of Comparative Example 7 is significantly reduced, and the material cost is increased compared with Example 1, and the cost performance is too low.

[0059] Compared with Example 1, Comparative Example 8 has a higher content of vinyl dimethicone / polymethicone silsesquioxane cross-linked polymer in the liquid foundation formula, and a lower content of dimethicone; the results show that although Comparative Example 8 is stable, it has a high viscosity, a sense of blockage when applied, and is too dry after application. This indicates that adding a certain amount of vinyl dimethicone / polymethicone silsesquioxane cross-linked polymer to the liquid foundation formula helps to improve product stability, but when the amount is too high, it will affect the uniformity of the coating and moisturizing performance.

[0060] Compared with Example 1, Comparative Example 9 has a higher content of silica dimethyl silylate and a lower content of polydimethylsiloxane in the liquid foundation formula; the results show that although Comparative Example 9 is stable, it has a high viscosity, feels slippery when applied, is absorbed too slowly, and is prone to mottled after application. This shows that although adding silica dimethyl silylate to the liquid foundation formula helps to improve product stability, when the amount is too high, it affects the film-forming properties of the liquid foundation and is prone to mottled.

[0061] According to the above experimental results, PCA polydimethylsiloxane is the key ingredient for formula stability in the liquid foundation formula, and the product stability is best when PCA polydimethylsiloxane is within a certain proportion range.

[0062] In the liquid foundation formula, adding silica dimethyl silylate and vinyl dimethicone / methicone silsesquioxane crosspolymer helps stabilize the formula. When the two are within a certain ratio range, the product has optimal stability, and the application is smoother and more even without patchiness.

[0063] It should be understood that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. For those skilled in the art, the technical solutions described in the above embodiments can be modified, or some of the technical features therein can be replaced by equivalents; and all these modifications and replacements should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A non-emulsified water-in-oil liquid foundation, characterized in that: In parts by weight, the invention comprises 19-31 parts of an emollient, 1.502-2.06 parts of a skin conditioner and 1.7-2.7 parts of a thickener, wherein the emollient comprises 2.5-5 parts of PCA polydimethylsiloxane and 10-15 parts of polydimethylsiloxane; the skin conditioner comprises 1.5-2.0 parts of a vinyl polydimethylsiloxane / polymethylsiloxane silsesquioxane cross-linked polymer; and the thickener comprises 0.7-1.0 parts of silica dimethyl silylate.

2. The non-emulsified water-in-oil liquid foundation according to claim 1, characterized in that: The emollient further comprises 4-6 parts of caprylic / capric triglyceride and 3-5 parts of isohexadecane.

3. The non-emulsified water-in-oil liquid foundation according to claim 1, characterized in that: The skin conditioning agent further comprises 0.001-0.03 parts of tetrahydromethylpyrimidine carboxylic acid and 0.001-0.03 parts of phytosteryl macadamia oleate.

4. The non-emulsified water-in-oil liquid foundation according to claim 1, characterized in that: The thickener also includes 0.5-0.7 parts of quaternary ammonium salt-18 hectorite and 0.5-1.0 parts of sodium chloride.

5. The non-emulsified water-in-oil liquid foundation according to claim 1, characterized in that: The liquid foundation also includes a moisturizer, a solvent and a surface treatment agent.

6. The non-emulsified water-in-oil liquid foundation according to claim 1, characterized in that: The liquid foundation also includes a preservative, a colorant, a film former and a fragrance.

7. The non-emulsified water-in-oil liquid foundation according to claim 5, characterized in that: The moisturizer includes 2-6 parts of glycerin, 1-5 parts of butylene glycol, 0.1-0.2 parts of sodium hyaluronate, and 0.3-0.5 parts of hexylene glycol; the solvent includes 45-55 parts of deionized water and 0.15-0.35 parts of triethyl citrate; and the surface treatment agent includes 0.1-0.5 parts of aluminum hydroxide and 0.1-0.5 parts of triethoxyoctylsilane.

8. The non-emulsified water-in-oil liquid foundation according to claim 6, characterized in that: The preservative includes 0.3-0.5 parts of p-hydroxyacetophenone; the colorant includes 8-10 parts of titanium dioxide, 0-10 parts of yellow iron oxide, 0-10 parts of red iron oxide, and 0-10 parts of black iron oxide; and the film-forming agent includes 1.5-4.5 parts of acrylic acid (ester) copolymer.

9. The method for preparing the water-in-oil non-emulsified liquid foundation according to any one of claims 1 to 8, characterized in that: The method comprises the following steps of preparing water-in-oil: S1. Mix the colorant and the surface treatment agent, add caprylic / capric triglyceride, stir evenly, and grind to obtain phase A; S2, mixing phase A and PCA polydimethylsiloxane, polydimethylsiloxane, isohexadecane, vinyl polydimethylsiloxane / polymethylsiloxane silsesquioxane crosspolymer, phytosteryl macadamia oleate, film former, quaternary ammonium salt-18 hectorite, silica dimethyl silylate, and triethyl citrate evenly, and heating to 70-75° C. to obtain an oil phase; S3, mixing deionized water, sodium chloride, moisturizer, preservative, and tetrahydromethylpyrimidine carboxylic acid, and heating to 70-80° C. to obtain an aqueous phase; S4. Add the water phase to the oil phase while stirring, homogenize, cool to below 45°C, add fragrance, stir evenly, and obtain the finished product.

10. The method for preparing a water-in-oil non-emulsified liquid foundation according to claim 9, characterized in that: The homogenization speed in step S2 is 1000-3000 rpm / min, and the homogenization time is 8-12 min; the homogenization speed in step S3 is 1000-3000 rpm / min, and the homogenization time is 2-5 min.

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