Film-forming composition and cosmetic

Abstract

The invention relates to a film-forming composition used in cosmetics, the film-forming composition comprises a film-forming agent, a first auxiliary agent and a second auxiliary agent, the film-forming agent is selected from a copolymer of acrylic acid (ester) and siloxane, and the second auxiliary agent is selected from a copolymer of acrylic acid (ester) and siloxane. The first auxiliary agent is selected from acrylic acid (ester) / stearyl alcohol acrylate / polydimethylsiloxane methacrylate copolymer and / or acrylic acid (ester) / ethylhexyl acrylate / polydimethylsiloxane methacrylate copolymer, and the second auxiliary agent is selected from squalane and / or synthetic phospholipid biomimetic materials. The content of the film-forming agent is 1.2 to 4 parts by weight, the content of the first auxiliary agent is 0.11 to 2 parts by weight, and the content of the second auxiliary agent is 0.0035 to 1.5 parts by weight. The invention also relates to cosmetics. According to the invention, the film-forming agent, the first auxiliary agent and the second auxiliary agent are cooperatively used in a specific proportion, so that the cosmetic containing the film-forming composition has excellent air permeability, makeup holding performance and skin feeling comfort.

Description

[0001] This application is a divisional application with an application date of July 17, 2024, application number CN202410954712.0, and invention name “Film-forming composition and cosmetics”. Technical Field

[0002] The present invention relates to the technical field of cosmetics, and in particular to a film-forming composition and cosmetics. Background Art

[0003] As consumers have higher and higher requirements for the performance of cosmetics, in addition to the most basic concealing and modifying functions, they also need to have a certain degree of long-lasting makeup performance. Therefore, film-forming agents are increasingly commonly used in cosmetics, such as trimethylsiloxysilicate, polymethylsilsesquioxane, and polysiloxane substances grafted with acrylate groups. Such film-forming agents often require a higher addition amount to achieve the desired long-lasting makeup effect. However, too much film-forming agent in cosmetics will not only cause users to feel tight skin and poor skin comfort, but also hinder the normal breathing function of the skin due to the lack of air permeability of the film formed on the skin surface, thus having a negative impact on the user's skin health.

[0004] At present, trimethylsiloxysilicate is generally used in synergistic combination with isododecane (and) acrylic acid (ester) / polytrimethylsiloxane methacrylate copolymer, and the different hardness and softness of the films formed by the two are used to form a breathable and long-lasting makeup base product. However, the film formed by trimethylsiloxysilicate has a higher molecular order and is more crystalline in physical properties. When it is mixed with acrylic acid (ester) / polytrimethylsiloxane methacrylate copolymer and begins to transition from a viscous flow state to a glassy state, the molecules of the former will be interspersed and fill in the irregularly ordered gaps in the molecular structure of the latter, and a glass transition closer to crystallization will occur, so that the final film is still quite ordered and dense, and its breathability effect is still poor. Summary of the invention

[0005] Based on this, it is necessary to provide a film-forming composition and cosmetics to address the above problems; the cosmetics including the film-forming composition have excellent breathability, long-lasting makeup performance and skin comfort.

[0006] A film-forming composition for use in cosmetics, comprising a film-forming agent, a first auxiliary agent and a second auxiliary agent, wherein the film-forming agent is selected from a copolymer of acrylic acid (esters) and silicone, the first auxiliary agent is selected from an acrylic acid (esters) / stearyl alcohol acrylate / polydimethylsiloxane methacrylate copolymer and / or an acrylic acid (esters) / ethylhexyl acrylate / polydimethylsiloxane methacrylate copolymer, the second auxiliary agent is selected from squalane and / or a synthetic phospholipid biomimetic material, and the film-forming agent is 1.2 to 4 parts by weight, the first auxiliary agent is 0.11 to 2 parts by weight, and the second auxiliary agent is 0.0035 to 1.5 parts by weight.

[0007] In one embodiment, the first auxiliary agent is selected from acrylic acid (esters) / stearyl acrylate / polydimethylsiloxane methacrylate copolymer, and the second auxiliary agent is selected from squalane, wherein the film-forming agent is 1.2 parts by weight to 4 parts by weight, the first auxiliary agent is 0.5 parts by weight to 2 parts by weight, and the second auxiliary agent is 0.5 parts by weight to 1.5 parts by weight.

[0008] In one embodiment, the first auxiliary agent is selected from acrylic acid (ester) / ethylhexyl acrylate / polydimethylsiloxane methacrylate copolymer, and the second auxiliary agent is selected from synthetic phospholipid biomimetic materials, wherein the film-forming agent is 1.2 parts by weight to 4 parts by weight, the first auxiliary agent is 0.11 parts by weight to 0.75 parts by weight, and the second auxiliary agent is 0.0035 parts by weight to 0.07 parts by weight.

[0009] In one embodiment, the synthetic phospholipid biomimetic material is selected from at least one of polyquaternium-51, polyquaternium-61, polyquaternium-65, polyquaternium-102, and phosphorylcholine polymer-MBH.

[0010] In one embodiment, the film former is selected from acrylic acid (esters) / polytrimethylsiloxane methacrylate copolymer.

[0011] A cosmetic comprising the film-forming composition as described above.

[0012] In one embodiment, the cosmetics are selected from base makeup products.

[0013] In one embodiment, the mass fraction of the film-forming composition in the base makeup product is 1.3135%-7.5%.

[0014] In one embodiment, when the first auxiliary agent is selected from acrylic acid (esters) / stearyl alcohol acrylate / polydimethylsiloxane methacrylate copolymer, and the second auxiliary agent is selected from squalane, the mass fraction of the film-forming composition in the base makeup product is 1.4%-7.5%;

[0015] Alternatively, when the first auxiliary agent is selected from acrylic acid (esters) / ethylhexyl acrylate / polydimethylsiloxane methacrylate copolymer, and the second auxiliary agent is selected from synthetic phospholipid biomimetic materials, the mass fraction of the film-forming composition in the base makeup product is 1.3135%-4.82%.

[0016] In one embodiment, the base makeup product is selected from primer, primer, primer, liquid foundation, foundation cream, foundation cream, cushion foundation, concealer liquid, concealer stick or concealer cream.

[0017] The film-forming agent, the first auxiliary agent and the second auxiliary agent of the present invention can be fully soluble in each other or fully dispersed, so that the film-forming agent, the first auxiliary agent and the second auxiliary agent cooperate with each other, which can reduce the molecular arrangement order of the film formed by the film-forming composition and / or improve the selective permeability of the film, thereby significantly improving the air permeability of the film formed by the film-forming composition. Therefore, the cosmetics made using the film-forming composition have excellent air permeability, long-lasting makeup and skin comfort. DETAILED DESCRIPTION

[0018] For ease of understanding of the present invention, the present invention will be described in more detail below. However, it should be understood that the present invention can be implemented in many different forms and is not limited to the embodiments or examples described herein. On the contrary, the purpose of providing these embodiments or examples is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific implementation methods or embodiments, and are not intended to limit the present invention. The optional scope of the term "and / or" used herein includes any one of two or more related listed items, and also includes any and all combinations of related listed items, and the combinations include any two related listed items, any more related listed items, or all related listed items.

[0020] The present invention provides a film-forming composition for use in cosmetics. The film-forming composition comprises a film-forming agent, a first auxiliary agent and a second auxiliary agent, wherein the film-forming agent is selected from a copolymer of acrylic acid (ester) and silicone, the first auxiliary agent is selected from an acrylic acid (ester) / stearyl alcohol acrylate / polydimethylsiloxane methacrylate copolymer and / or an acrylic acid (ester) / ethylhexyl acrylate / polydimethylsiloxane methacrylate copolymer, the second auxiliary agent is selected from squalane and / or a synthetic phospholipid biomimetic material, and the film-forming agent is 1.2 parts by weight to 4 parts by weight, the first auxiliary agent is 0.11 parts by weight to 2 parts by weight, and the second auxiliary agent is 0.0035 parts by weight to 1.5 parts by weight.

[0021] The film-forming agent, the first auxiliary agent and the second auxiliary agent of the present invention can be fully soluble in each other or fully dispersed, so that the film-forming agent, the first auxiliary agent and the second auxiliary agent cooperate with each other, which can reduce the molecular arrangement order of the film formed by the film-forming composition and / or improve the selective permeability of the film, thereby significantly improving the air permeability of the film formed by the film-forming composition. Therefore, the cosmetics made using the film-forming composition have excellent air permeability, long-lasting makeup and skin comfort.

[0022] In one embodiment, the first auxiliary agent is preferably an acrylic acid (ester) / stearyl acrylate / polydimethylsiloxane methacrylate copolymer, and the second auxiliary agent is preferably squalane, wherein the film-forming agent is preferably 1.2 parts by weight to 4 parts by weight, the first auxiliary agent is preferably 0.5 parts by weight to 2 parts by weight, and the second auxiliary agent is preferably 0.5 parts by weight to 1.5 parts by weight.

[0023] In the above embodiment, since the molecular structure of the first auxiliary agent is highly similar to that of the film-forming agent, it can be fully miscible with the film-forming agent in a dissolved state. When the solvent gradually evaporates and decreases, and the film-forming agent begins to undergo a glass transition, the molecules of the first auxiliary agent will be interspersed and fill in the gaps between the film-forming agent molecules, and exist in a dissolved, molten or solidified form, so that the molecules are in a disordered state, thereby reducing the molecular arrangement order of the film formed; at the same time, the second auxiliary agent is a liquid alkane, which has excellent solubility for the first auxiliary agent, so that the first auxiliary agent is more dissolved in the gaps between the film-forming agent molecules, further reducing the molecular arrangement order, and improving the air permeability of the film formed by the film-forming composition, while also bringing excellent makeup holding performance and skin comfort to cosmetics.

[0024] In addition, the second auxiliary agent also has excellent keratin affinity and has a strong tendency to wet the stratum corneum of the skin. Therefore, after the film-forming agent fully undergoes glass transition, the mixture of the first auxiliary agent and the second auxiliary agent will gradually penetrate from the inside of the film into the stratum corneum, leaving gaps inside the film, so that the air permeability of the film is further improved.

[0025] Optionally, the film-forming agent is preferably 2.2 parts by weight to 3 parts by weight, the sum of the masses of the first auxiliary agent and the second auxiliary agent is preferably 1.6 parts by weight to 2.4 parts by weight, and the first auxiliary agent is preferably 0.8 parts by weight to 1.2 parts by weight, and the second auxiliary agent is preferably 0.8 parts by weight to 1.2 parts by weight, thereby further improving the air permeability of the film formed by the film-forming composition.

[0026] In one embodiment, the first auxiliary agent is preferably an acrylic acid (ester) / ethylhexyl acrylate / polydimethylsiloxane methacrylate copolymer, and the second auxiliary agent is preferably a synthetic phospholipid biomimetic material, wherein the film-forming agent is preferably 1.2 parts by weight to 4 parts by weight, the first auxiliary agent is preferably 0.11 parts by weight to 0.75 parts by weight, and the second auxiliary agent is preferably 0.0035 parts by weight to 0.07 parts by weight.

[0027] In the above embodiment, the molecular structure of the first auxiliary agent is highly similar to that of the film-forming agent, and the molecular structure contains a certain proportion of hydrophilic carboxyl groups. Therefore, the first auxiliary agent has a certain surface activity, is fully miscible with the film-forming agent in a dissolved state, and can also evenly disperse the water-soluble second auxiliary agent in the film-forming agent. Since the second auxiliary agent has a biomembrane-like structure, it has selective permeability to substances such as sweat and sebum. Therefore, the film formed by the uniform dispersion system formed by the film-forming agent, the first auxiliary agent and the second auxiliary agent has excellent air permeability and can also bring sufficient makeup-lasting performance and skin comfort to the cosmetics.

[0028] Optionally, the sum of the masses of the first auxiliary agent and the second auxiliary agent is preferably 0.181 parts by weight to 0.2715 parts by weight, the film-forming agent is preferably 2.2 parts by weight to 3 parts by weight, and the first auxiliary agent is preferably 0.16 parts by weight to 0.24 parts by weight, and the second auxiliary agent is preferably 0.021 parts by weight to 0.0315 parts by weight, thereby further improving the selective permeability of the membrane formed by the film-forming composition.

[0029] Optionally, the synthetic phospholipid biomimetic material is preferably at least one of polyquaternium-51, polyquaternium-61, polyquaternium-65, polyquaternium-102, and phosphorylcholine polymer-MBH.

[0030] In one embodiment, the first auxiliary agent is preferably an acrylic acid (ester) / stearyl alcohol acrylate / polydimethylsiloxane methacrylate copolymer and an acrylic acid (ester) / ethylhexyl acrylate / polydimethylsiloxane methacrylate copolymer, and the second auxiliary agent is preferably squalane and a synthetic phospholipid biomimetic material, wherein the film-forming agent is preferably 2.2 parts by weight to 3 parts by weight, the acrylic acid (ester) / stearyl alcohol acrylate / polydimethylsiloxane methacrylate copolymer is preferably 0.8 parts by weight to 1.2 parts by weight, the acrylic acid (ester) / ethylhexyl acrylate / polydimethylsiloxane methacrylate copolymer is preferably 0.16 parts by weight to 0.24 parts by weight, the squalane is preferably 0.8 parts by weight to 1.2 parts by weight, and the synthetic phospholipid biomimetic material is preferably 0.021 parts by weight to 0.0315 parts by weight.

[0031] In the above embodiment, the film-forming composition can not only improve the air permeability of the formed film by reducing the order of molecular arrangement, but also improve the air permeability of the formed film through the selective permeability similar to that of biological membranes, thereby comprehensively improving the air permeability of the film formed by the film-forming composition, while also bringing excellent makeup holding performance and skin comfort to the cosmetics.

[0032] In one embodiment, the first auxiliary agent is preferably an acrylate / stearyl acrylate / polydimethylsiloxane methacrylate copolymer and an acrylate / ethylhexyl acrylate / polydimethylsiloxane methacrylate copolymer, and the second auxiliary agent is preferably squalane, wherein the film-forming agent is preferably 2.2 to 3 parts by weight, the acrylate / stearyl acrylate / polydimethylsiloxane methacrylate copolymer is preferably 0.8 to 1.2 parts by weight, the acrylate / ethylhexyl acrylate / polydimethylsiloxane methacrylate copolymer is preferably 0.16 to 0.24 parts by weight, and the squalane is preferably 0.8 to 1.2 parts.

[0033] In one embodiment, the first auxiliary agent is preferably an acrylic acid (ester) / stearyl alcohol acrylate / polydimethylsiloxane methacrylate copolymer and an acrylic acid (ester) / ethylhexyl acrylate / polydimethylsiloxane methacrylate copolymer, and the second auxiliary agent is preferably a synthetic phospholipid biomimetic material, wherein the film-forming agent is preferably 2.2 parts by weight to 3 parts by weight, the acrylic acid (ester) / stearyl alcohol acrylate / polydimethylsiloxane methacrylate copolymer is preferably 0.8 parts by weight to 1.2 parts by weight, the acrylic acid (ester) / ethylhexyl acrylate / polydimethylsiloxane methacrylate copolymer is preferably 0.16 parts by weight to 0.24 parts by weight, and the synthetic phospholipid biomimetic material is preferably 0.021 parts by weight to 0.0315 parts by weight.

[0034] In one embodiment, the first auxiliary agent is preferably an acrylic acid (ester) / stearyl alcohol acrylate / polydimethylsiloxane methacrylate copolymer, and the second auxiliary agent is preferably squalane and a synthetic phospholipid biomimetic material, wherein the film-forming agent is preferably 2.2 to 3 parts by weight, the acrylic acid (ester) / stearyl alcohol acrylate / polydimethylsiloxane methacrylate copolymer is preferably 0.8 to 1.2 parts by weight, the squalane is preferably 0.8 to 1.2 parts by weight, and the synthetic phospholipid biomimetic material is preferably 0.021 to 0.0315 parts by weight.

[0035] In one embodiment, the first auxiliary agent is preferably an acrylic acid (ester) / ethylhexyl acrylate / polydimethylsiloxane methacrylate copolymer, and the second auxiliary agent is preferably squalane and a synthetic phospholipid biomimetic material, wherein the film-forming agent is preferably 2.2 to 3 parts by weight, the acrylic acid (ester) / ethylhexyl acrylate / polydimethylsiloxane methacrylate copolymer is preferably 0.16 to 0.24 parts by weight, the squalane is preferably 0.8 to 1.2 parts by weight, and the synthetic phospholipid biomimetic material is preferably 0.021 to 0.0315 parts by weight.

[0036] In one embodiment, the first auxiliary agent is preferably an acrylic acid (ester) / stearyl acrylate / polydimethylsiloxane methacrylate copolymer, and the second auxiliary agent is preferably a synthetic phospholipid biomimetic material, wherein the film-forming agent is preferably 2.2 to 3 parts by weight, the first auxiliary agent is preferably 0.8 to 1.2 parts by weight, and the second auxiliary agent is preferably 0.021 to 0.0315 parts by weight.

[0037] In one embodiment, the first auxiliary agent is preferably acrylic acid (ester) / ethylhexyl acrylate / polydimethylsiloxane methacrylate copolymer, and the second auxiliary agent is preferably squalane, wherein the film-forming agent is preferably 2.2 parts by weight to 3 parts by weight, the first auxiliary agent is preferably 0.16 parts by weight to 0.24 parts by weight, and the second auxiliary agent is preferably 0.8 parts by weight to 1.2 parts by weight.

[0038] In the film-forming agent of the present invention, the silicone is preferably at least one of polytrimethylsiloxane, polydimethylsiloxane, propyl polytrimethylsiloxane, hydroxypropyl polydimethylsiloxane, and bis-hydroxypropyl polydimethylsiloxane. In addition, the acrylic acid (ester) in the film-forming agent of the present invention is a general term for a class of molecular structures. For example, the acrylic acid (ester) may include structures such as methyl acrylate, ethyl acrylate, butyl acrylate, methyl methacrylate, ethyl methacrylate, isobutyl methacrylate, behenyl alcohol acrylate, and polydimethylsiloxane alcohol acrylate.

[0039] Optionally, the film-forming agent is preferably an acrylic acid (ester) / polytrimethylsiloxane methacrylate copolymer, and specifically, DOWSIL of Dow can be selected. TM FA 4002ID Silicone Acrylate, which is a solution of 40 wt% of acrylic acid (esters) / polytrimethylsiloxane methacrylate copolymer dissolved in isododecane.

[0040] Optionally, when the first auxiliary agent is selected from acrylic acid (esters) / stearyl acrylate / polydimethylsiloxane methacrylate copolymer, the product with the brand KP-561P of Shin-Etsu Corporation can be selected; when the first auxiliary agent is selected from acrylic acid (esters) / ethylhexyl acrylate / polydimethylsiloxane methacrylate copolymer, the product with the brand KP-578 of Shin-Etsu Corporation can be selected.

[0041] Optionally, when the second auxiliary agent is selected from squalane, Dongguan Vicky's Camellia Squalance Camellia Squalane, when the second auxiliary agent is selected from polyquaternium-51, the OLI-8100E cell lecithin aqueous solution produced by Shanghai Aoli Industrial Co., Ltd. can be selected, which contains 3.5wt% of polyquaternium-51, and the remaining ingredients are mainly water.

[0042] Optionally, the film-forming composition is preferably used in combination with a solvent to achieve good film formation. The solvent is preferably at least one of isododecane, C9-12 alkane, cyclopentasiloxane, cyclohexasiloxane, polydimethylsiloxane, methyl polytrimethylsiloxane, and octyl polydimethylsiloxane.

[0043] The present invention also provides a cosmetic comprising the film-forming composition.

[0044] Optionally, the cosmetics are preferably base makeup products, such as primer, primer, primer, liquid foundation, foundation cream, foundation cream, cushion foundation, liquid concealer, concealer stick or concealer, etc., so that the film-forming composition is applied to the base makeup product, and the base makeup product has excellent air permeability and long-lasting makeup.

[0045] Optionally, the mass fraction of the film-forming composition in the base makeup product is preferably 1.3135%-7.5%, thereby further improving the air permeability and durability of the base makeup product.

[0046] Specifically, when the first auxiliary agent is selected from acrylic acid (esters) / stearyl alcohol acrylate / polydimethylsiloxane methacrylate copolymer, and the second auxiliary agent is selected from squalane, the mass fraction of the film-forming composition in the base makeup product is 1.4%-7.5%, and more preferably 3.6%-6.1%. 。

[0047] Specifically, when the first auxiliary agent is selected from acrylic acid (esters) / ethylhexyl acrylate / polydimethylsiloxane methacrylate copolymer, and the second auxiliary agent is selected from synthetic phospholipid biomimetic materials, the mass fraction of the film-forming composition in the base makeup product is 1.3135%-4.82%.

[0048] Optionally, the base makeup products also include colorants, emulsifiers, thickeners, moisturizers, emollients, slip-enhancing powders, preservatives and other common raw materials for base makeup formulas. Appropriate preparation raw materials can be selected according to different base makeup products, and the present invention does not impose specific limitations.

[0049] Hereinafter, the film-forming composition and the cosmetic will be further described through the following specific examples.

[0050] When the first auxiliary agent is selected from acrylic acid (esters) / stearyl acrylate / polydimethylsiloxane methacrylate copolymer and the second auxiliary agent is selected from squalane, the specific components and mass fractions of the film-forming composition are shown in Table 1, and the water vapor permeability data are shown in Table 2.

[0051] Table 1

[0052]

[0053] Table 2

[0054] <![CDATA[Water vapor transmission rate (g / (m 2 ·24 h))]]> Example 1 1548 Example 2 1427 Example 3 1532 Comparative Example 1 1015 Comparative Example 2 1369 Comparative Example 3 1238 Comparative Example 4 1569

[0055] Among them, the test method of water vapor transmission rate is as follows:

[0056] The film-forming agent, the first auxiliary agent and the second auxiliary agent in the specific proportions in Table 1 are mixed with a solvent to obtain a solution with a film-forming composition content of 35 wt%. The moisture permeability of the film formed by the solution is tested, and the moisture permeability test method is as follows:

[0057] Cut 300 mesh nylon filter cloth into 12cm×12cm squares and spread them on a smooth PVC surface. Drop an appropriate amount of film-forming composition on the center of the nylon filter cloth, and then use a 10μm SZQ preparation device to evenly spread the film-forming composition in a 7cm×7cm square area, wait for 10 minutes for the solvent to fully evaporate, and the film-forming composition to completely form a film.

[0058] Pour 12g of water into a permeable cup with an inner diameter of 60mm and a cup depth of 22mm, and fix the treated nylon filter cloth on the permeable cup according to the standard operation method in the permeable cup instructions, and ensure that the film-forming area completely covers the cup mouth. Cover the corresponding cup lid and weigh the initial mass M1 of the experimental device, then place the experimental device in a biochemical incubator at 45℃, take it out after 6 hours, and weigh the mass M2 of the covered experimental device again. Calculate the moisture permeability according to the following formula:

[0059]

[0060] Where: WVT - moisture permeability per square meter per 24 hours, unit is g / (m 2 24h);

[0061] S——experimental area, i.e. the inner diameter of the permeable cup, in m 2 ;

[0062] t——experimental time, in h.

[0063] Application Example 1

[0064] The film-forming compositions of Examples 1-3 and Comparative Examples 1-4 were made into liquid foundations. Taking Example 1 and Comparative Example 1 as examples, the types and amounts of raw materials of the liquid foundations are shown in Table 3.

[0065] Table 3

[0066]

[0067]

[0068] It is understood that when preparing the liquid foundation, the amount of the film former, the first auxiliary agent and the second auxiliary agent is consistent with the amount in Table 1. For example, when preparing the liquid foundation, the raw material DOWSIL TM The mass fraction of FA 4002ID Silicone Acrylate is 6.5wt%, and the amount of the acrylic acid (ester) / polytrimethylsiloxane methacrylate copolymer film-forming agent contained therein is 6.5wt%×40%, that is, the mass fraction of the film-forming agent acrylic acid (ester) / polytrimethylsiloxane methacrylate copolymer in the foundation liquid is 2.6 parts by weight.

[0069] The test methods for breathability, makeup durability and skin comfort are as follows:

[0070] Thirty volunteers were selected as the research subjects. After applying the liquid foundations prepared in Examples 1-3 and Comparative Examples 1-4 respectively, the usage effects of the volunteers were collected and scored from three investigation items: air permeability, long-lasting wear, and skin feel comfort. Among them, the scoring range was from 1 point to 5 points, and the average value was taken as the result. The higher the score, the better the usage effect. The scoring results were statistically analyzed. When the score was 4 ≤ N ≤ 5, the index was considered excellent; when the score was 3 ≤ N < 4, the index was considered good; when the score was 1 < N < 3, the index was considered poor.

[0071] In addition, skin feel comfort is a relatively subjective evaluation index. The scores of the volunteers for this item are affected by various subjective factors, including: greasiness: the skin feels overly smooth and slippery after using the product and is not easy to absorb; stickiness: the product leaves an adhesive feeling on the skin and is not refreshing; tightness: the product forms a film on the skin surface due to the polymer it contains, resulting in a feeling of contraction and tightness; dryness: the skin feels insufficiently moisturized and nourished after using the product, and the touch is astringent; heaviness: the product has a burden on the skin because its texture is too thick and its spreadability is poor; roughness: the texture of the product is not delicate enough, and the skin feels uneven after use. Therefore, in addition to scoring, the subjective evaluations of the volunteers with scores not higher than the good range were also collected, and the descriptive content obtained from the interviews was statistically analyzed and classified according to the above factors.

[0072] The statistical results of the liquid foundations prepared in Examples 1-3 and Comparative Examples 1-4 are shown in Table 4.

[0073] Table 4

[0074]

[0075] It can be seen from Examples 1-3 that when preparing the liquid foundation with the film-forming composition of the present invention, when the dosage of the first auxiliary agent acrylate / stearyl acrylate / polydimethylsiloxane methacrylate copolymer is 0.5 parts by weight - 2 parts by weight, the dosage of the second auxiliary agent squalane is 0.5 parts by weight - 1.5 parts by weight, and the dosage of the film-forming composition in the liquid foundation formula is 3.6 wt% - 6.1 wt%, the three indexes of air permeability, long-lasting wear, and skin feel comfort of the liquid foundation are all excellent.

[0076] From Example 1 and Comparative Example 1, it can be seen that when trimethylsiloxysilicate is added to the film-forming agent and no auxiliary agent is used, although the makeup lasting property is relatively the same as that of Examples 1-3, the air permeability and skin comfort are poor, and the skin comfort is reflected as a tight feeling. From Example 1 and Comparative Example 2, it can be seen that although the total amount of the film-forming agent in Comparative Example 2 remains unchanged, trimethylsiloxysilicate is additionally introduced into the film-forming agent, and although the air permeability and skin comfort are slightly improved, they are still poor. From Example 1 and Comparative Examples 3-4, it can be seen that when the amount of the first auxiliary agent and the second auxiliary agent is too small or too large, the air permeability and skin comfort of the liquid foundation are poor, and the skin comfort is reflected as a tight feeling or a sticky feeling.

[0077] When the first auxiliary agent is selected from acrylic acid (ester) / ethylhexyl acrylate / polydimethylsiloxane methacrylate copolymer, and the second auxiliary agent is selected from synthetic phospholipid biomimetic materials, the specific components and mass fractions of the film-forming composition are shown in Table 5, and the moisture permeability is tested using the above-mentioned test method, and the data are shown in Table 6.

[0078] Table 5

[0079]

[0080] Table 6

[0081] <![CDATA[Water vapor transmission rate (g / (m 2 ·24 h))]]> Example 4 1565 Example 5 1427 Example 6 1566 Comparative Example 5 1012 Comparative Example 6 1247 Comparative Example 7 1544

[0082] Application Example 2

[0083] The film-forming compositions of Examples 4-6 and Comparative Examples 5-7 were made into primers. Taking Example 4 and Comparative Example 5 as examples, the types and amounts of raw materials of the primers are shown in Table 7.

[0084] Table 7

[0085]

[0086] Using the above-mentioned test methods for air permeability and makeup durability, the statistical results of the primers prepared in Examples 4-6 and Comparative Examples 5-7 are shown in Table 8.

[0087] Table 8

[0088]

[0089] It can be seen from Examples 4-6 in Table 8 that when the film-forming composition of the present invention is used to prepare a liquid foundation, when the amount of the first auxiliary agent acrylic acid (ester) / ethylhexyl acrylate / polydimethylsiloxane methacrylate copolymer is 0.11 weight part-0.75 weight part, and the amount of the second auxiliary agent synthetic phospholipid biomimetic material is 0.0035 weight part-0.07 weight part, the three indicators of breathability, makeup durability and skin comfort of the liquid foundation are all excellent.

[0090] From Example 4 and Comparative Example 5, it can be seen that when the film-forming agent is trimethylsiloxysilicate, even if the same first auxiliary agent and second auxiliary agent are used, the film-forming agent, the first auxiliary agent and the second auxiliary agent cannot form an effective coordination, resulting in poor air permeability, makeup durability and skin comfort. From Example 4 and Comparative Examples 6-7, it can be seen that when the amount of the first auxiliary agent and the second auxiliary agent is too small or too large, the air permeability and skin comfort of the liquid foundation are poor, and the skin comfort is reflected as tightness or stickiness.

[0091] When the combination of the first auxiliary agent and the second auxiliary agent is of other types, the specific components and weight fractions of the film-forming composition are shown in Table 9, and the water vapor permeability is tested using the above-mentioned test method, and the data are shown in Table 10.

[0092] Table 9

[0093]

[0094] Table 10

[0095]

[0096]

[0097] Application Example 3

[0098] The film-forming compositions of Examples 7 to 11 were made into liquid foundations in the manner of Application Example 1, and the above-mentioned air permeability and makeup lasting properties testing methods were used. The statistical results of the liquid foundations are shown in Table 11.

[0099] Table 11

[0100]

[0101] As can be seen from Table 11, the film-forming agent of the present invention is selected from acrylic acid (ester) / polytrimethylsiloxane methacrylate copolymer, the first auxiliary agent is selected from acrylic acid (ester) / stearyl alcohol acrylate / polydimethylsiloxane methacrylate copolymer and / or acrylic acid (ester) / ethylhexyl acrylate / polydimethylsiloxane methacrylate copolymer, and the second auxiliary agent is selected from squalane and / or synthetic phospholipid biomimetic materials. The film-forming agent, the first auxiliary agent and the second auxiliary agent can cooperate with each other to comprehensively improve the air permeability of the film formed by the film-forming composition, and at the same time can also bring excellent makeup holding performance and skin comfort to the cosmetics.

[0102] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0103] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A film-forming composition for improving water vapor permeability, used in cosmetics, characterized in that: The film-forming composition comprises a film-forming agent, a first auxiliary agent, a second auxiliary agent and a solvent. The film-forming agent is selected from acrylic acid (ester) / polytrimethylsiloxane methacrylate copolymer, which is 2.6 parts by weight; The first auxiliary agent is selected from any one or two of acrylic acid (esters) / stearyl alcohol acrylate / polydimethylsiloxane methacrylate copolymer and acrylic acid (esters) / ethylhexyl acrylate / polydimethylsiloxane methacrylate copolymer; The acrylic acid (ester) / stearyl alcohol acrylate / polydimethylsiloxane methacrylate copolymer is 1 part by weight, and the acrylic acid (ester) / ethylhexyl acrylate / polydimethylsiloxane methacrylate copolymer is 0.2 part by weight or 0.75 part by weight; The second auxiliary agent is selected from squalane and / or polyquaternium-51; the squalane is 1 part by weight, and the polyquaternium-51 is 0.02625 part by weight or 0.07 part by weight; The solvent is isododecane and water, wherein the isododecane is 4.4 parts by weight, 4.5 parts by weight, 6.4 parts by weight or 7.9 parts by weight, and the water is 0.72375 parts by weight or 1.93 parts by weight.

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