A compound for easy addition of silky and soft focus effects, its method of manufacture and use

Abstract

The present application belongs to the field of cosmetics, and relates to a compound for adding conveniently to increase silkiness and soft-focus effect and a preparation method and application thereof, the compound comprising the following components in mass percentage: 1-5% of silicone crosslinked polymer, 20-30% of dimethicone, 10-20% of dimethiconol, 0.05-2% of water-soluble polymer, 15-25% of emulsifier, 15-35% of alkane with carbon number C13-C30, and 15-20% of water. Compared with the prior art, the compound for adding conveniently to increase silkiness and soft-focus effect can be added to an oil-in-water emulsified system, can increase silkiness and soft-focus effect, and can be directly added to the oil-in-water emulsified system, so that the organic silicone elastomer is not uniformly dispersed to cause the emulsified material to have fine particles and affect product quality.

Description

Technical Field

[0001] This invention belongs to the field of cosmetics, and specifically provides a compound that can be directly added to an oil-in-water system and has a silky feel and soft-focus effect when applied, as well as its preparation method and application. Background Technology

[0002] Cosmetics, as daily chemical products used by consumers, are mainly composed of an aqueous phase and an oil phase. Because of their frequent use, the skin feel is crucial; a smooth, slippery feel during application provides a pleasant experience. Generally, this smoothness is determined by the properties of the aqueous or oil phase. Hydrophilic polymers, such as linear / linear sodium hyaluronate, can increase the slipperiness of the product, but as water evaporates, water-soluble polymers tend to become sticky, increasing the unpleasant experience. Lipophilic polymers, such as linear / linear polydimethylsiloxane / alcohol, provide a slippery feel. Organosilicon elastomers, which are cross-linked polymers of organosilicon dispersed in polydimethylsiloxane, have excellent slipperiness and elasticity. Furthermore, silicone oil is not easily volatile, providing a long-lasting slippery feel. However, organosilicon elastomers are generally added to water-in-oil systems; direct addition to oil-in-water systems often results in difficulties in emulsification and dispersion. Summary of the Invention

[0003] The purpose of this invention is to overcome the defects of the prior art by providing a compound that is easy to add to enhance the silky and soft-focus effect, and a method for preparing the same. This compound can be directly added to an oil-in-water emulsion system without causing uneven dispersion of the silicone elastomer, which would result in the emulsion containing fine particles and affect product quality.

[0004] The objective of this invention can be achieved through the following technical solution: a composite material that is easy to add to enhance silkiness and soft-focus effects, characterized in that the composite material comprises the following components in weight percentage: 1%-5% organosilicon crosslinking polymer, 20%-30% polydimethylsiloxane, 10%-20% polydimethylsiloxane alcohol, 0.05%-2% water-soluble polymer, 15%-25% emulsifier, 15%-35% alkanes with C13-30 carbon atoms, and 15%-20% water.

[0005] Furthermore, depending on the degree of crosslinking, the organosilicon crosslinking polymer can exhibit a transformation from gel to powder form. The organosilicon crosslinking polymer is selected from one or more of the following: polydimethylsiloxane / vinyl polydimethylsiloxane crosslinking polymer, C30-45 alkyl cetearyl polydimethylsiloxane crosslinking polymer, cetearyl polydimethylsiloxane crosslinking polymer, vinyl polydimethylsiloxane / lauryl polydimethylsiloxane crosslinking polymer, cetearyl polydimethylsiloxane / vinyl polydimethylsiloxane crosslinking polymer, and polydimethylsiloxane PEG-10 / 15 crosslinking polymer.

[0006] Furthermore, the organosilicon crosslinking polymer and polydimethylsiloxane are a mixture with a weight ratio of 1:10 to 1:20. The viscosity of the polydimethylsiloxane at room temperature can range from 0.65 cst to 1,000,000 cst as the chain length increases. The viscosity of the polydimethylsiloxane in the present invention is less than 50 cst, and more preferably 5 cst-10 cst.

[0007] Furthermore, the water-soluble polymer is selected from one or more of the following: polyacrylamide, hydroxyethyl acrylate / methoxyethyl acrylate copolymer, hydroxyethyl acrylate / sodium acryloyldimethyl taurate copolymer, sodium acrylate / sodium acryloyldimethyl taurate copolymer, polyacrylate-13, acrylamide / ammonium acrylate copolymer, and sodium acrylate / C10-30 alcohol acrylate crosslinking polymer.

[0008] Furthermore, the emulsifier is selected as an oil-in-water emulsifier, specifically a polyoxyethylene ether sorbitan fatty acid ester and / or a polyoxyethylene alkyl ether nonionic emulsifier.

[0009] Furthermore, the emulsifier is selected from one or more of polysorbate-20, polysorbate-40, polysorbate-60, polysorbate-80, PEG-20 dehydrated sorbitan isostearate, lauryl ether-9, cetyl ether-10, cetyl ether-15, and behenyl ether-20.

[0010] Furthermore, the HLB value of the emulsifier is in the range of 13.5-16.5.

[0011] Alkanes with C13-30 carbon atoms can be alkanes with a defined number of carbon atoms, or a mixture of alkanes with defined carbon atoms.

[0012] A method for preparing a compound that is easy to add to enhance silkiness and soft-focus effects includes the following steps: (1) Dissolve the water-soluble polymer in water, add the emulsifier, heat the material to 80℃-120℃ to make the nonionic surfactant turn into a water-in-oil system, and continue stirring until the water evaporates to less than 30% of the added water. (2) Heat the alkanes with C13-30 carbons to 80℃-120℃, add them to the material obtained in step (1), stir evenly, and then cool to room temperature; (3) After the organosilicon crosslinking polymer is mixed evenly with the polydimethylsiloxane mixture and the polydimethylsiloxane alcohol, it is added to the material obtained in step (2), stirred evenly, the volatile water is added, and stirring is continued until the material is converted into an oil-in-water system.

[0013] The resulting complex is a semi-transparent gel with an excellent silky feel when applied, making it easy to add directly to an oil-in-water system to give the same silky feel.

[0014] When applied to the skin, the complex has a concealing effect on pores, providing a soft-focus effect. Furthermore, in terms of application, it can be easily added directly to an oil-in-water system, giving the product a noticeably silky smooth feel.

[0015] The aforementioned easily added complex for enhancing silkiness and soft-focus effects may also contain oil-soluble active ingredients at a concentration of 0.1-1% of the total mass of the complex. These oil-soluble active ingredients include tocopherol and its derivatives, vitamin A and its derivatives, borneol, menthol, phenylethyl resorcinol, bisabolol, astaxanthin, oil-soluble plant extracts, ascorbic acid tetraisopalmitate, fullerene, linoleic acid, linolenic acid, or oil-soluble antibacterial ingredients. Oil-soluble natural and / or synthetic pigments and / or mica powder may be added for coloring.

[0016] The aforementioned easy-to-add compound that enhances silkiness and soft-focus effects can be applied to cosmetic formulations including, but not limited to, water-in-oil type creams, lotions, serums, toners, gels, cleansing balms, cleansing milks, massage creams, massage lotions, body lotions, conditioners, hand creams, cream-based masks, sheet masks, sunscreens, and sunscreen lotions.

[0017] Compared with the prior art, the present invention has the following advantages: This invention provides a convenient complex for enhancing silky smoothness and soft-focus effects. It utilizes an oil-in-water emulsifier to form a water-in-oil emulsion above the cloud point, encapsulating hydrophilic polymers uniformly dispersed in water. Through prolonged heating, the encapsulated water continuously evaporates, ultimately forming smaller oil-in-water hydrophilic polymer particles. These particles facilitate better contact with the swollen organosilicon crosslinked polymer. Upon contact with water, rapid phase inversion emulsification occurs, forming an oil-in-water system that encapsulates the oil. Simultaneously, the extended hydrophilic polymer chains provide support for the organosilicon crosslinked polymer, preventing the formation of gel-like particles. In cosmetic formulations, oil-in-water is prevalent; this invention allows for the convenient addition of organosilicon crosslinked polymers to the oil-in-water system, enriching the skin feel and meeting consumers' demands for a silky smooth and soft texture, resulting in a more premium feel. Furthermore, it provides a simple preparation method suitable for large-scale production and application. In particular, active ingredients with specific efficacy claims can be added. Attached Figure Description

[0018] Figure 1 The easy-to-apply compound provides a smooth and soft-focus effect; Figure 2 Different compounds are added to water in different states; Figure 3 Comparison of the emulsification appearance of creams and lotions with or without the addition of organosilicon cross-linked polymers via complexes. Detailed Implementation

[0019] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be noted that those skilled in the art can make various changes and modifications without departing from the concept of the present invention. These all fall within the scope of protection of the present invention.

[0020] All raw materials used in this invention are commercially available products.

[0021] Example 1 Weigh the raw materials according to the mass percentage shown in Table 1. .

[0022] Prepare according to the following steps: (1) Disperse and dissolve sodium acrylate / sodium acryloyl dimethyl taurate copolymer in water. After confirming that the dissolution is uniform, add polysorbate-80 and heat the material to 100°C to make the system invert into a water-in-oil system. Continue stirring until the water evaporates to less than 30% of the added water. (2) Heat isohexadecane to 100°C, add it to the material obtained in (1), stir evenly, and then cool to room temperature; (3) After the polydimethylsiloxane / vinyl polydimethylsiloxane crosslinked polymer and polydimethylsiloxane (5cst) mixture are evenly mixed, the silicone elastomer and polydimethylsiloxane alcohol are added to the material obtained in (2), stirred evenly, the volatile water is added, and stirring is continued to make the material invert into an oil-in-water system, and the process is complete.

[0023] Apply a small amount of the product obtained in Example 1 to the skin on the inside of the arm, such as... Figure 1 As shown, compared to the untreated area, skin texture and pores are concealed to some extent, resulting in a soft-focus effect.

[0024] Example 2 Weigh the following raw materials by mass percentage: The preparation method is as follows: (1) Dissolve polyacrylamide in water, and after confirming that the dissolution is uniform, add lauryl alcohol polyether-9. Heat the material to 120°C to make the system invert into a water-in-oil system. Continue stirring until the water evaporates to less than 30% of the added water. (2) Heat squalane to 120°C, add it to the material obtained in (1), stir evenly, and then cool to room temperature; (3) After mixing the vinyl polydimethylsiloxane / lauryl polydimethylsiloxane crosslinked polymer with polydimethylsiloxane (5cst) mixture, the organosilicon elastomer and polydimethylsiloxane alcohol are added to the material obtained in (2), stirred evenly, and the evaporated water is added. Stirring is continued until the material is converted into an oil-in-water system, and the process is complete.

[0025] Example 3 Weigh the following raw materials by mass percentage: The preparation method is as follows: (1) Disperse and dissolve sodium acrylate / sodium acryloyl dimethyl taurate copolymer in water. After confirming that the dissolution is uniform, add polysorbate-80 and heat the material to 100°C to make the system invert into a water-in-oil system. Continue stirring until the water evaporates to less than 30% of the added water. (2) Heat C15-19 alkane to 100°C, add it to the material obtained in (1), stir evenly, and then cool to room temperature; (3) After mixing bisabolol, ascorbic acid tetraisopalmitate, vinyl polydimethylsiloxane / lauryl polydimethylsiloxane crosslinked polymer with polydimethylsiloxane (6cst) mixture organosilicon elastomer and polydimethylsiloxane alcohol evenly, add it to the material obtained in (2), stir evenly, add volatile water, continue stirring to make the material phase change to oil-in-water system, and a complex containing active ingredients can be obtained.

[0026] Application Example 1: A silky smooth, soft-focus, moisturizing, and repairing gold face cream Weigh the following raw materials by mass percentage: The preparation method is as follows: (1) Heat the A phase material to 80-85℃ and dissolve it evenly. Heat the B phase material to 80-85℃ and dissolve it evenly. While homogenizing the A phase material, add the B phase material to A. The homogenization speed is 3000rpm-4500rpm and the homogenization time is 5min. (2) After the homogenized A+B material is stirred and cooled to 45°C, the water-dispersible silky complex prepared in Example 1 is added and stirred evenly. Then, phases D and E are added in sequence and stirred evenly to complete the preparation.

[0027] Comparative Example 1 Weigh the following raw materials by mass percentage: The preparation method is as follows: (1) Mix water and polysorbate-80 and heat to 100°C to dissolve evenly, so that the system is converted into a water-in-oil system. Continue stirring until the water evaporates to less than 30% of the added water. (2) Heat isohexadecane to 100°C, add it to the material obtained in (1), stir evenly, and then cool to room temperature; (3) After the polydimethylsiloxane / vinyl polydimethylsiloxane crosslinked polymer and polydimethylsiloxane (5cst) mixture of organosilicon elastomer and polydimethylsiloxane alcohol are evenly mixed, they are added to the material obtained in (2), stirred evenly, and the volatile water is added. Stirring is continued until the material is converted into an oil-in-water system, and the preparation is completed.

[0028] Comparative Example 2 Weigh the following raw materials by mass percentage: The preparation method is as follows: (1) Disperse and dissolve sodium acrylate / sodium acryloyl dimethyl taurate copolymer in water. After confirming that the dissolution is uniform, add polysorbate-80 and heat the material to 100°C to make the system invert into a water-in-oil system. Continue stirring until the water evaporates to less than 30% of the added water. (2) Heat isohexadecane to 100°C, add it to the material obtained in (1), stir evenly, and then cool to room temperature to complete the preparation.

[0029] The complexes prepared in Example 1 and Comparative Examples 1-2 were formulated into a 3% aqueous solution, as follows: Figure 2As shown, Example 1 yielded a homogeneous material with no precipitates or suspended matter. In Comparative Example 1, the silicone elastomer could not be dispersed in the aqueous solution. Comparative Example 2, without the addition of silicone elastomer, presented a transparent, homogeneous solution with a bluish tint. This indicates that the composites prepared in the examples have good water dispersibility, and the water-soluble polymer has a good suspending and stabilizing effect on the silicone crosslinked polymer. Applying a 3% aqueous solution of the composites prepared in Example 1 and Comparative Example 2 to the skin revealed that the aqueous solution of Example 1 had a distinctly silky feel, while the aqueous solution of Comparative Example 2 lacked this silky feel and even retained a certain stickiness as the water evaporated.

[0030] Comparative Example 3 Weigh the following raw materials by mass percentage: The preparation method is as follows: (3) Heat the A phase material to 80-85℃ and dissolve it evenly. Heat the B phase material to 80-85℃ and dissolve it evenly. While homogenizing the A phase material, add the B phase material to A. The homogenization speed is 3000rpm-4500rpm and the homogenization time is 5min. (4) After the homogenized A+B material is stirred and cooled to 45°C, the composite prepared by Comparative Example 2 is added and stirred evenly. Then, phases D and E are added in sequence and stirred evenly to complete the preparation.

[0031] Comparative Example 3 shows the direct participation of silicone elastomer in emulsification, compared to Example 1 where a composite prepared from silicone elastomer was added to the emulsion system. The appearance of the resulting material is as follows: Figure 3 As shown. In Application Example 1, the material is fine and continuous, while in Comparative Example 3, the material is rough and uneven.

[0032] Example 4 Weigh the raw materials according to the indicated mass percentage. .

[0033] Prepare according to the following steps: (1) Disperse and dissolve sodium acrylate / sodium acryloyl dimethyl taurate copolymer in water. After confirming that the dissolution is uniform, add polysorbate-80 and heat the material to 80°C to make the system invert into a water-in-oil system. Continue stirring until the water evaporates to less than 30% of the added water. (2) Heat isohexadecane to 80°C, add it to the mixture obtained in (1), stir until homogeneous, and then cool to room temperature; (3) After the polydimethylsiloxane / vinyl polydimethylsiloxane crosslinked polymer and polydimethylsiloxane (5cst) mixture are evenly mixed, the silicone elastomer and polydimethylsiloxane alcohol are added to the material obtained in (2), stirred evenly, the volatile water is added, and stirring is continued to make the material invert into an oil-in-water system, and the process is complete.

[0034] Apply a small amount of the product obtained in Example 4 to the skin on the inside of the arm. The skin texture and pores are covered to a certain extent, resulting in a soft-focus effect.

[0035] Example 5 Weigh the following raw materials according to the mass percentages shown in the table below: The preparation method is as follows: (1) Dissolve polyacrylamide in water, and after confirming that the dissolution is uniform, add lauryl alcohol polyether-9. Heat the material to 120°C to make the system invert into a water-in-oil system. Continue stirring until the water evaporates to less than 30% of the added water. (2) Heat squalane to 120°C, add it to the material obtained in (1), stir evenly, and then cool to room temperature; (3) After mixing the vinyl polydimethylsiloxane / lauryl polydimethylsiloxane crosslinked polymer with polydimethylsiloxane (5cst) mixture, the organosilicon elastomer and polydimethylsiloxane alcohol are added to the material obtained in (2), stirred evenly, and the evaporated water is added. Stirring is continued until the material is converted into an oil-in-water system, and the process is complete.

[0036] Apply a small amount of the product obtained in Example 5 to the skin on the inside of the arm. The skin texture and pores are covered to a certain extent, resulting in a soft-focus effect.

[0037] Matters not covered in this invention are common knowledge.

[0038] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A compound that is easy to add to enhance silkiness and soft-focus effects, characterized in that, The composite comprises the following components in weight percentages: 1%-5% organosilicon crosslinking polymer, 20%-30% polydimethylsiloxane, 10%-20% polydimethylsiloxane alcohol, 0.05%-2% water-soluble polymer, 15%-25% emulsifier, 15%-35% alkanes with C13-30 carbon atoms, and 15%-20% water; The complex was prepared by the following method: (1) Dissolve the water-soluble polymer in water, add emulsifier, heat the material to 80℃-120℃ to make the system invert into a water-in-oil system, and continue stirring until the water evaporates to less than 30% of the added water. (2) Heat the alkanes with C13-30 carbons to 80℃-120℃, add them to the material obtained in step (1), stir evenly, and then cool to room temperature; (3) After the organosilicon crosslinking polymer and polydimethylsiloxane mixture and polydimethylsiloxane alcohol are mixed evenly, they are added to the material obtained in step (2), stirred evenly, and the volatile water is added. Stirring is continued until the material is converted into an oil-in-water system. The water-soluble polymer is selected from one or more of polyacrylamide and sodium acrylate / sodium acryloyldimethyl taurate copolymer; The emulsifier is a polyoxyethylene ether sorbitan fatty acid ester and / or a polyoxyethylene alkyl ether nonionic emulsifier.

2. The compound for enhancing silkiness and soft-focus effects according to claim 1, characterized in that, The organosilicon crosslinking polymer is selected from one or more of the following: polydimethylsiloxane / vinyl polydimethylsiloxane crosslinking polymer, C30-45 alkyl cetearyl polydimethylsiloxane crosslinking polymer, cetearyl polydimethylsiloxane crosslinking polymer, vinyl polydimethylsiloxane / lauryl polydimethylsiloxane crosslinking polymer, cetearyl polydimethylsiloxane / vinyl polydimethylsiloxane crosslinking polymer, and polydimethylsiloxane PEG-10 / 15 crosslinking polymer.

3. The compound for enhancing silkiness and soft-focus effects according to claim 1, characterized in that, The organosilicon crosslinking polymer and polydimethylsiloxane are a mixture with a weight ratio of 1:10 to 1:20, and the viscosity of the polydimethylsiloxane is less than 50 cst.

4. The compound for enhancing silkiness and soft-focus effects according to claim 1, characterized in that, The emulsifier is selected from one or more of polysorbate-20, polysorbate-40, polysorbate-60, polysorbate-80, PEG-20 dehydrated sorbitan isostearate, lauryl ether-9, cetyl ether-10, cetyl ether-15, and behenyl ether-20.

5. The compound for enhancing silkiness and soft-focus effects according to claim 1, characterized in that, The HLB value of the emulsifier is in the range of 13.5-16.

5.

6. A method for preparing a composite compound for enhancing silkiness and soft-focus effects as described in any one of claims 1-5, characterized in that, Includes the following steps: (1) Dissolve the water-soluble polymer in water, add emulsifier, heat the material to 80℃-120℃ to make the system invert into a water-in-oil system, and continue stirring until the water evaporates to less than 30% of the added water. (2) Heat the alkanes with C13-30 carbons to 80℃-120℃, add them to the material obtained in step (1), stir evenly, and then cool to room temperature; (3) After the organosilicon crosslinking polymer is mixed evenly with the polydimethylsiloxane mixture and the polydimethylsiloxane alcohol, it is added to the material obtained in step (2), stirred evenly, the volatile water is added, and stirring is continued until the material is converted into an oil-in-water system.

7. The application of the easily added compound for enhancing silkiness and soft-focus effects as described in claim 1, characterized in that, The compound is applied to cosmetics, including water-in-oil emulsion creams, lotions, serums, toners, gels, cleansing balms, cleansing milks, massage creams, massage lotions, body lotions, conditioners, hand creams, cream-based masks, sheet masks, sunscreens, or sunscreen lotions.

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