Silica-free water-exploding cosmetic product

Abstract

The invention discloses a silicon-free water explosion cosmetic product. The cosmetic product comprises a water-sensitive gel compound factor, an oil phase and a pH regulator, the water-sensitive gel composite factor comprises a gel composition in a swelling state, the gel composition in the swelling state comprises a gel composition and water, and the gel composition comprises ammonium polyacryloyldimethyl taurine and an acrylic acid (ester) / C10-30 alkanol acrylate cross-linked polymer; the viscosities of the ammonium polyacryloyldimethyl taurine and the acrylic acid (ester) / C10-30 alkanol acrylate cross-linked polymer in an aqueous solution at the temperature of 25 DEG C are in a specific range; the oil phase comprises grease suspended in the water-sensitive gel complex factor; the pH value of the cosmetic product is 5-7, the mass ratio of the gel composition is 0.8%-1%, and the mass ratio of the grease is 5%-15%. The cosmetic product is a silicon-free system, and a stable and excellent water explosion effect of the system is realized by adopting a water-sense three-dimensional oil suspension technology.

Description

Technical Field

[0001] The present application belongs to the field of cosmetic technology, and specifically relates to a silicone-free water-explosive cosmetic product. Background Art

[0002] In recent years, gel-based cosmetics with a "water-bursting" effect have gained market favor due to their unique water-inducing properties. These products typically utilize a silicone-in-water formula system, encapsulating the aqueous phase with silicone oil to form microscopic encapsulations. These microcapsules release water upon mechanical friction or temperature changes, creating a "water-bursting" sensation.

[0003] However, existing silicon-in-water formulations have poor stability and strict production process requirements, making it difficult to guarantee product quality. To maintain system stability, the amount of water added often needs to be reduced, resulting in a poor "water burst" effect. Summary of the Invention

[0004] To solve the above problems, the present application provides a silicone-free water-explosive cosmetic product and its preparation method. The cosmetic product of the present application is a silicone-free formula system, which uses water-sensing three-dimensional oil suspension technology to make the system stable and have an excellent "water-explosive" effect.

[0005] The first aspect of the present application provides a silicone-free water-explosive cosmetic product, comprising a water-sense gel complex factor, an oil phase, and a pH adjuster;

[0006] Wherein, the water-sensing gel composite factor includes a gel composition in a swollen state;

[0007] The swollen gel composition includes a gel composition and water, wherein the gel composition includes ammonium polyacryloyldimethyltaurate and an acrylic acid (ester) / C10-30 alkyl acrylate crosspolymer; the viscosity of a 1% aqueous solution of ammonium polyacryloyldimethyltaurate and a 0.5% aqueous solution of acrylic acid (ester) / C10-30 alkyl acrylate crosspolymer is 55,000 to 65,000 cP;

[0008] The oil phase includes oil, and the oil is suspended in the water-sensing gel complex factor;

[0009] The pH value of the cosmetic product is 5-7, and based on the total mass of the cosmetic product being 100%, the mass proportion of the gel composition is 0.8%-1%, and the mass proportion of the oil is 5%-15%.

[0010] Without intending to be bound by any theory or explanation, when ammonium polyacryloyldimethyltaurate (APT) and acrylic acid (ester) / C10-30 alkyl acrylate crosspolymer are compounded, the acrylic acid (ester) / C10-30 alkyl acrylate crosspolymer can fill the space in the microgel formed by the swelling of the APT, achieving rheological modification and enhancing suspension stability. The microgel then swells upon absorbing water, forming the aforementioned hydrogel composite. When the content of the gel composition and oil in the cosmetic product falls within the aforementioned suitable ranges, and the pH of the cosmetic system is between 5 and 7, the hydrogel composite formed by the gel composition swollen by absorbing water can exhibit high stability. As a result, the oil droplets formed by the oil can be stably suspended in the hydrogel composite, thus achieving the "hydrogel three-dimensional oil suspension technology."

[0011] The cosmetic product of the present application adopts water-sensing three-dimensional oil suspension technology, so that the cosmetic product system has high stability during the production and storage process. The product can still quickly restore the "three-dimensional suspension" state after being subjected to external forces during storage or transportation, reducing the requirements for process and storage conditions. When the cosmetic product is applied to the user's skin surface, under the action of shear force, the water-sensing gel composite factor can quickly break open and release oil. Due to the lipophilic nature of the skin, oil droplets can adhere to the skin surface to form an oil film. Part of the water-sensing gel composite factor penetrates into the skin, and part of it spreads on the surface of the oil film in the form of small beads, showing an obvious "water bursting" phenomenon. The above-mentioned oil film has good skin-fitting properties and is also waterproof and sweat-proof. Therefore, the cosmetic product of the present application can have a refreshing skin feel, waterproof and sweat-proof functions, and an excellent "water bursting" effect.

[0012] In addition, the cosmetic product of the present application is a silicone-free system, which can avoid the safety hazards caused by silicone oil.

[0013] In any embodiment of the present application, the mass ratio of ammonium polyacryloyldimethyltaurate to acrylic acid (esters) / C10-30 alkyl acrylate cross-polymer is 1:(0.2-0.6).

[0014] In any embodiment of the present application, based on the total mass of the cosmetic product as 100%, the gel composition includes 0.4% to 0.7% of ammonium polyacryloyldimethyltaurate and 0.1% to 0.3% of acrylic acid (esters) / C10-30 alkyl acrylate crosslinked polymer.

[0015] In any embodiment of the present application, the oil includes one or more of caprylic / capric triglyceride, petrolatum, isohexadecane, hydrogenated polyisobutene, squalane, and jojoba oil.

[0016] In any embodiment of the present application, the pH regulator includes one or more of arginine, tromethamine, triethanolamine, and sodium hydroxide.

[0017] In any embodiment of the present application, the oil phase further comprises a colorant, and the colorant comprises color powder.

[0018] The colorant is dispersed in the oil to form color powder oil droplets.

[0019] In any embodiment of the present application, the colorant further includes a toner surface treatment agent.

[0020] In any embodiment of the present application, the color powder includes one or more of CI 77891, CI 77491, CI 77492, and CI 77499.

[0021] In any embodiment of the present application, the toner surface treatment agent includes one or more of hydrogenated lecithin, aluminum hydroxide, and lauroyl lysine.

[0022] In any embodiment of the present application, the cosmetic product further comprises a moisturizer and / or an antioxidant.

[0023] In any embodiment of the present application, based on the total mass of the cosmetic product as 100%, the cosmetic product comprises:

[0024] Gel composition: 0.8% to 1%;

[0025] Water: 62.1% to 86.7%;

[0026] Oil: 5% to 15%;

[0027] Colorant: 2% to 5%;

[0028] Moisturizer: 5% to 16%;

[0029] Antioxidant 0.4% to 0.6%;

[0030] pH adjuster: 0.1%~0.3%.

[0031] In any embodiment of the present application, the moisturizing agent includes one or more of butylene glycol, 1,2-hexanediol, glycerin, glyceryl polyether-26, pentylene glycol, and methylpropylene glycol.

[0032] In any embodiment of the present application, the antioxidant includes one or more of p-hydroxyacetophenone, tocopherol, capryloylglycine, and disodium edetate. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the state changes of a cosmetic product provided by one embodiment of the present application during use;

[0034] Figure 2 This is a schematic diagram of the microstructure of a cosmetic product provided by one embodiment of the present application;

[0035] Figure 3 Schematic diagram of the process of swelling of the gel composition provided in water according to one embodiment of the present application;

[0036] Figure 4 This is a scanning electron microscope test image of the swelling process of the gel composition of Example 1 of the present application;

[0037] Figure 5 is the viscosity-shear rate curve of the cosmetic product of Example 1 of the present application;

[0038] Figure 6 This is a graph showing the test results of the "water-bursting" effect of the cosmetic product of Example 1 of the present application;

[0039] Figure 7 This is a test result diagram of the "water-bursting" effect of the cosmetic product of Comparative Example 6 of the present application. DETAILED DESCRIPTION

[0040] In order to make the application purpose, technical solution and beneficial technical effects of this application clearer, the application is further described in detail below with reference to the embodiments. It should be understood that the embodiments described in this specification are only for explaining this application and are not intended to limit this application.

[0041] For simplicity, this application only explicitly discloses certain numerical ranges. However, any lower limit may be combined with any upper limit to form an unspecified range; and any lower limit may be combined with other lower limits to form an unspecified range, and similarly, any upper limit may be combined with any other upper limit to form an unspecified range. In addition, although not explicitly stated, each point or individual value between the endpoints of a range is included in the range. Thus, each point or individual value may serve as its own lower limit or upper limit and be combined with any other point or individual value, or with other lower limits or upper limits, to form an unspecified range.

[0042] In the description of this application, it should be noted that, unless otherwise specified, “above” and “below” are inclusive of the number, and “a variety” in “one or more” means two or more.

[0043] The above disclosure of the present application is not intended to describe every disclosed embodiment or every implementation in the present application. The following description more specifically illustrates exemplary embodiments. In many places throughout the application, guidance is provided through a series of examples, which can be used in various combinations. In each example, the enumeration is intended only as a representative group and should not be construed as exhaustive.

[0044] In this application, "silicone-free" may mean that the cosmetic product does not contain silicone oil, or that the amount of silicone oil added is less than 0.1% based on the total mass of the cosmetic product as 100%.

[0045] As mentioned in the background, existing silicon-in-water formulations have poor stability and strict preparation process requirements, making it difficult to guarantee product quality. To maintain system stability, the amount of water added often needs to be reduced, resulting in a poor "water burst" effect.

[0046] Furthermore, since the introduction of silicone oil, research and discussion on its safety have been ongoing. Reducing or avoiding the use of silicone oils (such as octamethylcyclotetrasiloxane (D4 silicone oil) and cyclopentasiloxane (D5 silicone oil)) in cosmetics is a current research trend in cosmetics.

[0047] In view of this, the inventors, after in-depth research and extensive experiments, provide a silicone-free water-explosive cosmetic product and a preparation method thereof.

[0048] In a first aspect, the present application provides a silicone-free water-explosive cosmetic product comprising a water-sense gel complex factor, an oil phase, and a pH adjuster. The pH value of the cosmetic product is 5 to 7.

[0049] The water-sensing gel composite factor comprises a gel composition in a swollen state.

[0050] The swollen gel composition comprises a gel composition and water, and the gel composition absorbs water to swell. The gel composition comprises ammonium polyacryloyldimethyltaurate and acrylic acid (ester) / C10-30 alkyl acrylate cross-polymer.

[0051] The viscosity of a 1% aqueous solution of ammonium polyacryloyldimethyltaurate and a 0.5% aqueous solution of acrylic acid (esters) / C10-30 alkyl acrylate crosspolymer are both 55,000 to 65,000 cP.

[0052] The viscosities of a 1% aqueous solution of ammonium polyacryloyldimethyltaurate and a 0.5% aqueous solution of acrylic acid (esters) / C10-30 alkyl acrylate crosspolymer are both 55,000 to 65,000 cP. This indicates that, among the raw materials used to prepare the gel composition, the ammonium polyacryloyldimethyltaurate used is configured to have a 1% mass concentration in aqueous solution, and the viscosity of the 1% aqueous solution at 25°C is 55,000 to 65,000 cP; and the acrylic acid (esters) / C10-30 alkyl acrylate crosspolymer used is configured to have a 0.5% mass concentration in aqueous solution, and the viscosity of the 0.5% aqueous solution at 25°C is 55,000 to 65,000 cP.

[0053] Based on the total mass of the cosmetic product as 100%, the mass proportion of the gel composition is 0.8% to 1%, and the mass proportion of the oil is 5% to 15%. For example, the mass proportion of the gel composition can be 0.8%, 0.85%, 0.9%, 0.95%, 1%, or a range between any two of the foregoing values. The mass proportion of the oil can be 5%, 8%, 10%, 12%, 15%, or a range between any two of the foregoing values.

[0054] Ammonium polyacryloyldimethyltaurate is a sulfonated, slightly cross-linked acrylic polymer with both thickening and self-emulsifying properties. It readily swells in cold water, forming a polymer network structure that decreases in viscosity under shear. Its rheological characteristics are: at a concentration range of 0.4% to 0.7%, its viscosity at 20°C ranges from 10,000 to 30,000 mPas.

[0055] Acrylates / C10-30 Alkyl Acrylate Crosspolymer is a polyacrylic acid polymer. Before contact with water, the crosslinked polyacrylic acid resin is in a contracted state. Upon dispersion in water, the crosslinked polyacrylic acid resin chains begin to unwind. Its rheological characteristics are: at a concentration range of 0.1% to 0.3%, its viscosity at 20°C is 1000 to 3500 mPas.

[0056] The inventors of this application have discovered that when ammonium polyacryloyldimethyltaurate, whose aqueous solution viscosity at 25°C meets specific requirements, is compounded with an acrylic acid (ester) / C10-30 alkyl acrylate cross-linked polymer, the acrylic acid (ester) / C10-30 alkyl acrylate cross-linked polymer can fill the space of the microgel formed by the swelling of ammonium polyacryloyldimethyltaurate, achieving the effect of rheological modification, enhancing suspension stability, and reaching a swollen state after water absorption, forming the above-mentioned water-sensing gel composite factor. However, when the content of the gel composition in the cosmetic product system is too high, the system has a high viscosity and the "water-bursting" effect is not obvious. When the content of the gel composition in the cosmetic product system is too low, the water-sensing gel composite factor's ability to stabilize oil and fat decreases, making it difficult for oil and fat to be stably suspended in the water-sensing gel composite factor, and the product stability is prone to problems during storage and transportation.

[0057] The inventors also discovered that the oil content also has a certain impact on the stability of the hydrogel composite. When the oil content is too low, it affects the formation of water droplets and the "water burst" effect is not obvious. However, when the oil content is too high, it affects the stability of the hydrogel composite, making it difficult for the oil to be suspended in the hydrogel composite.

[0058] Without intending to be bound by any theory or explanation, when the gel composition and oil content in a cosmetic product falls within the aforementioned suitable ranges, and the pH of the cosmetic system is between 5 and 7, the hydrogel composite, formed by the gel composition absorbing water from the system and swelling, can exhibit high stability. This hydrogel composite can generate a yield stress, allowing oil droplets formed by the oil to be stably suspended within the hydrogel composite, a process known as "hydro-sense three-dimensional oil suspension technology."

[0059] The cosmetic product of the present application adopts water-based three-dimensional oil suspension technology, so the cosmetic product system has high stability during production and storage. During the preparation, packaging or transportation process, if the viscosity of the water-based gel composite factor decreases due to external force, it can return to the initial viscosity after standing and always stably wrap the oil droplets, thereby reducing the requirements for process and storage conditions. Figure 1 As shown, the cosmetic product can have a water gel texture before being applied to the user's skin surface. When the cosmetic product is applied to the user's skin surface, under the action of shear force, the water-sensing gel composite factor can quickly break open and release oil. Due to the lipophilic nature of the skin, oil droplets can adhere to the skin surface to form an oil film. Part of the water-sensing gel composite factor penetrates into the skin, and part of it spreads on the surface of the oil film in the form of small beads, showing an obvious "water bursting" phenomenon. The above-mentioned oil film has good skin adhesion and is also waterproof and sweat-proof. Therefore, the cosmetic product of the present application can have a refreshing skin feel, waterproof and sweat-proof functions, and an excellent "water bursting" effect.

[0060] In addition, the cosmetic product of the present application is a silicone-free system, which can avoid the safety hazards caused by silicone oil.

[0061] It should be noted that this application does not limit the specific type of cosmetic product, and it can be any product that has a "water-boosting" effect. As an example, cosmetic products may include but are not limited to natural creams, primers, moisturizers, and water-boosting creams.

[0062] In some embodiments, ammonium polyacryloyldimethyltaurate and acrylates / C10-30 alkyl acrylate crosspolymer are both powders at 25°C.

[0063] Ammonium polyacryloyldimethyl taurate and acrylic acid (esters) / C10-30 alkyl acrylate crosspolymer are both in powder form at 25°C, which means that the raw materials used to prepare the gel composition are ammonium polyacryloyldimethyl taurate and acrylic acid (esters) / C10-30 alkyl acrylate crosspolymer, which are both in powder form at 25°C.

[0064] In some embodiments, the mass ratio of ammonium polyacryloyldimethyltaurate to acrylic acid (esters) / C10-30 alkyl acrylate crosspolymer can be 1:(0.2-0.6), for example, 1:0.2, 1:0.3, 1:0.4, 1:0.5, 1:0.6, or a range consisting of any of the above ratios.

[0065] When the mass ratio of ammonium polyacryloyldimethyltaurate to acrylic acid (esters) / C10-30 alkyl acrylate crosspolymer is within the above-mentioned suitable range, the stability of the water-based gel composite factor can be further improved, so that even when the cosmetic product formulation system contains color powder, the product stability can still be maintained during production and storage.

[0066] In some embodiments, based on 100% of the total mass of the cosmetic product, the gel composition may include 0.4% to 0.7% of ammonium polyacryloyldimethyltaurate and 0.1% to 0.3% of acrylic acid (esters) / C10-30 alkyl acrylate crosspolymer.

[0067] When the contents of ammonium polyacryloyldimethyltaurate and acrylic acid (esters) / C10-30 alkyl acrylate crosspolymer in the gel composition are within the above-mentioned suitable ranges, the ammonium polyacryloyldimethyltaurate and acrylic acid (esters) / C10-30 alkyl acrylate crosspolymer can satisfy specific rheological characteristics, thereby further improving the stability of the water-sensing gel complex factor in the cosmetic product.

[0068] The present application does not limit the types of oils and pH adjusters, which can be selected from any oils and pH adjusters known in the art. Those skilled in the art can select them according to the specific formula of the cosmetic product, and are not limited here.

[0069] In some embodiments, the oil may include one or more of caprylic / capric triglyceride, petrolatum, isohexadecane, hydrogenated polyisobutene, squalane, and jojoba oil.

[0070] The above-mentioned oils have good skin-adhering properties and are used in cosmetic products to form a skin-adhering oil film on the skin surface, thereby improving the waterproof and anti-sweat effects of the cosmetic products.

[0071] In some embodiments, the pH adjuster comprises one or more of arginine, tromethamine, triethanolamine, and sodium hydroxide.

[0072] In some embodiments, the oil phase further comprises a colorant, and the colorant comprises a toner.

[0073] The colorant has good oil solubility and can be dispersed in oil to form color powder oil droplets.

[0074] The existing silicon-in-water system has poor stability. If color powder is added to the system, it will have a negative impact on the stability of the system, making it difficult to prepare "water-explosive" cosmetic products with added color powder.

[0075] According to the cosmetic product of the present application, the gel composition can absorb water in the system and swell to form a water-sensitive gel composite factor with high stability. When a colorant is added to the cosmetic product system of the present application, the colorant can dissolve with the oil to form color powder oil droplets. The water-sensitive gel composite factor has a yield stress, which can prevent the oil droplets from floating up and the colorant powder from sinking. Figure 2 As shown, after the colorant and oil are dissolved, the oil encapsulates the colorant powder, forming colorant oil droplets. The colorant oil droplets can be stably suspended in the water-based gel composite factor. As a result, this application can provide cosmetic products containing color powder and having a "water-bursting" effect, thereby increasing the diversity of product appearances and providing users with more choices.

[0076] In some embodiments, the colorant further includes a toner surface treatment agent.

[0077] Toner surface treatment agents can improve the dispersibility of toner in oils and fats. They coat the surface of toner particles, thereby optimizing their dispersibility and stability in oils and fats through multiple mechanisms, including electrostatic repulsion, steric hindrance, wettability modification, and chemical anchoring. Furthermore, toner surface treatment agents can impart a smooth, skin-friendly feel to the toner droplets, thereby enhancing the skin feel of the cosmetic product of this application.

[0078] The present application does not limit the types of toner and toner surface treatment agent, which can be selected from any toner and toner surface treatment agent known in the art. Those skilled in the art can select according to the specific formula of the cosmetic product, and this is not limited here.

[0079] In some embodiments, the color powder includes one or more of CI 77891 (titanium dioxide), CI 77491 (red iron oxide), CI 77492 (yellow iron oxide), and CI 77499 (black iron oxide).

[0080] In some embodiments, the toner surface treatment agent includes one or more of hydrogenated lecithin, aluminum hydroxide, and lauroyl lysine.

[0081] In some embodiments, the cosmetic product further includes a moisturizer and / or an antioxidant.

[0082] In some embodiments, based on the total mass of the cosmetic product being 100%, the cosmetic product comprises the following components:

[0083] Gel composition: 0.8% to 1%;

[0084] Water: 62.1% to 86.7%;

[0085] Oil: 5% to 15%;

[0086] Colorant: 2% to 5%;

[0087] Moisturizer: 5% to 16%;

[0088] Antioxidant 0.4% to 0.6%;

[0089] pH adjuster: 0.1%~0.3%.

[0090] The present application does not limit the types of moisturizers and antioxidants, which can be selected from any toner and toner surface treatment agent known in the art. Those skilled in the art can select them according to the specific formula of the cosmetic product, and are not limited here.

[0091] In some embodiments, the humectant includes one or more of butylene glycol, 1,2-hexanediol, glycerin, glycereth-26, pentylene glycol, and methylpropylene glycol.

[0092] In some embodiments, the antioxidant comprises one or more of p-hydroxyacetophenone, hydroxyacetophenone, tocopherol, capryloylglycine, and disodium EDTA.

[0093] The silicone-free water-explosive cosmetic product provided in this application can be prepared according to the following steps S10 to S40:

[0094] S10, preparing a gel composition, including uniformly mixing ammonium polyacryloyldimethyltaurate and acrylic acid (esters) / C10-30 alkyl acrylate crosspolymer to obtain a gel composition. The viscosity of a 1% aqueous solution of ammonium polyacryloyldimethyltaurate and a 0.5% aqueous solution of acrylic acid (esters) / C10-30 alkyl acrylate crosspolymer is 55,000 to 65,000 cP.

[0095] S20, preparing a water-sense gel composite factor, comprising mixing the gel composition with water to swell the gel composition to obtain the water-sense gel composite factor.

[0096] In step S20, the gel composition can be mixed with water and stirred to disperse, allowing the gel composition to completely swell to obtain a water-sensitive gel composite factor. The stirring rate can be 300 rpm to 800 rpm, for example, 500 rpm. The stirring time can be adjusted based on the swelling of the gel composition and can be 20 minutes to 40 minutes, for example, 30 minutes. Figure 3 FIG. 1 is a schematic diagram of the process of the gel composition swelling in water. Figure 3As shown, after the gel composition comes into contact with water, water molecules can fill in the spaces between the cross-linked polymer chains in the gel composition, and the cross-linked polymer chains gradually open and eventually swell to form a water-sensing gel composite factor.

[0097] S30, uniformly mixing the oil phase and the water-sensing gel composite factor to obtain a mixture, wherein the oil phase includes fat.

[0098] In one example, the oil phase can be slowly added to the hydrogel composite factor under stirring so that the oil phase is dispersed in the hydrogel composite factor. The stirring rate can be 300rpm to 600rpm, for example, 500rpm. After the oil phase is completely dispersed in the hydrogel, it can also be homogenized by a homogenizer at a speed of 3500rpm to 4500rpm (for example, about 4000rpm) for 10min to 15min. In this way, the stability of the hydrogel composite factor can be maintained, and the oil can be stably suspended in the hydrogel composite factor.

[0099] S40, uniformly mixing the mixture with a pH regulator to obtain a cosmetic product, wherein the pH value of the cosmetic product is 5 to 7, and based on the total mass of the cosmetic product being 100%, the mass proportion of the gel composition is 0.8% to 1%, and the mass proportion of the oil is 5% to 15%.

[0100] In some embodiments, ammonium polyacryloyldimethyltaurate and acrylates / C10-30 alkyl acrylate crosspolymer are both powders at 25°C.

[0101] In the above S10, preparing the gel composition, the method includes uniformly mixing ammonium polyacryloyldimethyltaurate and acrylic acid (ester) / C10-30 alkyl acrylate cross-linked polymer. Before obtaining the gel composition, the preparation method may further include:

[0102] A variety of ammonium polyacryloyldimethyltaurate powders and a variety of acrylic acid (esters) / C10-30 alkyl acrylate crosspolymer powders are provided.

[0103] The ammonium polyacryloyldimethyltaurate and the acrylates / C10-30 alkyl acrylate crosspolymer for preparing the gel composition are selected from a variety of candidate ammonium polyacryloyldimethyltaurate powders and a variety of candidate acrylates / C10-30 alkyl acrylate crosspolymer powders.

[0104] Specifically, the viscosity of a 1% aqueous solution of various selected ammonium polyacryloyldimethyltaurate powders at 25°C can be measured, and the selected ammonium polyacryloyldimethyltaurate powders having an aqueous solution viscosity of 55,000 to 65,000 cP corresponding to the selected ammonium polyacryloyldimethyltaurate powders can be used as the raw material for the gel composition. The viscosity of a 0.5% aqueous solution of various selected acrylic acid (ester) / C10-30 alkyl acrylate cross-linked polymer powders at 25°C can be measured, and the selected acrylic acid (ester) / C10-30 alkyl acrylate cross-linked polymer powders having an aqueous solution viscosity of 55,000 to 65,000 cP corresponding to the selected acrylic acid (ester) / C10-30 alkyl acrylate cross-linked polymer powders can be used as the raw material for the gel composition.

[0105] For example, the plurality of ammonium polyacryloyldimethyltaurate powders to be selected may include powders having one or more different manufacturers, brands, degrees of polymerization, number of polymerization units, polymerization forms, preparation processes, and production batches, etc.; and the plurality of acrylic acid (ester) / C10-30 alkyl acrylate cross-linked polymer powders to be selected may include powders having one or more different manufacturers, brands, degrees of polymerization, number of polymerization units, polymerization forms, preparation processes, and production batches, etc., which are not limited in this application. Suitable raw materials for the gel composition can be determined by sampling and testing the plurality of ammonium polyacryloyldimethyltaurate powders and the plurality of acrylic acid (ester) / C10-30 alkyl acrylate cross-linked polymer powders to be selected.

[0106] In some embodiments, before uniformly mixing the oil phase and the water-sensing gel composite factor to obtain the mixture, the preparation method may further include:

[0107] Mix moisturizers and antioxidants with the hydrogel complex and heat.

[0108] In some embodiments, the oil phase further includes a colorant; S30, before uniformly mixing the oil phase and the water-sensing gel composite factor to obtain the mixture, the preparation method may further include:

[0109] Mix the colorant and oil evenly and heat to obtain the oil phase.

[0110] In some embodiments, the heating temperature may be 70-80° C. Specifically, the moisturizer and antioxidant may be mixed evenly with the hydrogel composite factor and heated to 70-80° C. to dissolve the antioxidant; the colorant and oil may be mixed evenly and heated to 70-80° C. to obtain an oil phase; and the oil phase may be mixed evenly with the hydrogel composite factor in which the moisturizer and antioxidant are dissolved to obtain a mixture.

[0111] For example, a moisturizer and an antioxidant can be added thereto and dispersed evenly, and then heated in a water bath at about 75° C. for 20 minutes to dissolve the antioxidant; a colorant is dispersed in the oil, stirred and dispersed at a speed of about 800 rpm for about 10 minutes to prepare a uniform oil phase mixture, and heated to 75° C. for use; the oil phase mixture is slowly added to the water-sensitive gel composite factor in which the moisturizer and antioxidant are dissolved at a stirring rate of 500 rpm to obtain a mixture.

[0112] Example

[0113] The following examples more particularly describe the present disclosure, and these examples are intended to be illustrative only, as various modifications and variations within the scope of the present disclosure will be apparent to those skilled in the art. Unless otherwise indicated, all parts, percentages, and ratios reported in the following examples are by weight, and all reagents used in the examples are commercially available or synthesized according to conventional methods and used directly without further processing, and all instruments used in the examples are commercially available.

[0114] The sources of the ammonium polyacryloyldimethyltaurate and acrylic acid (ester) / C10-30 alkyl acrylate cross-linked polymer in the examples and comparative examples are as follows:

[0115] Ammonium polyacryloyldimethyltaurate ATBS: The viscosity of a 1% aqueous solution at 25°C ranges from 55,000 to 65,000 cp (Examples and Comparative Examples except Comparative Example 8);

[0116] Ammonium polyacryloyldimethyltaurate ATBS-C: The viscosity of a 1% aqueous solution at 25°C ranges from 95,000 to 105,000 cp (Comparative Example 8);

[0117] Acrylates / C10-30 Alkyl Acrylate Crosspolymer Ultrez21: The viscosity of a 0.5% aqueous solution at 25°C ranges from 55,000 to 65,000 cP (Examples and Comparative Examples except Comparative Example 9);

[0118] Acrylates / C10-30 Alkyl Acrylate Crosspolymer Ultrez 20: The viscosity of a 0.5% aqueous solution at 25°C ranges from 25,000 to 30,000 cP (Comparative Example 9).

[0119] Example 1

[0120] According to the formula shown in Table 1, the cosmetic product of Example 1 was prepared by the following steps:

[0121] (1) The gel composition is mixed with deionized water as a solvent, and the mixture is stirred and dispersed at a speed of about 500 rpm for about 30 minutes to prepare a completely swollen water-sensitive gel composite factor for use.

[0122] (2) Add the moisturizer and antioxidant to the water-sensing gel composite factor and disperse them evenly, and heat them in a water bath at about 75°C for 20 minutes to dissolve the antioxidant.

[0123] (3) Disperse the colorant in the oil, stir and disperse at a speed of about 800 rpm for about 10 minutes to make a uniform oil phase mixture and heat it to 75°C for use.

[0124] (4) The oil phase mixture is slowly added to the water-sensitive gel composite factor obtained in step (2) in which the moisturizer and antioxidant are dissolved, and stirring is started simultaneously (about 500 rpm).

[0125] (5) After the oil phase mixture is completely dispersed in the hydrogel composite factor, use a homogenizer to homogenize at a speed of about 4000 rpm for 10 minutes. At this time, the oil and color powder should be stably suspended in the hydrogel.

[0126] (6) Adding a pH regulator to adjust the pH of the product to between 5 and 7 to obtain a cosmetic product.

[0127] Table 1

[0128]

[0129] Example 2

[0130] The cosmetic product of Example 2 was prepared according to the formula shown in Table 2. The preparation steps of the cosmetic product of Example 2 were the same as those of Example 1.

[0131] Table 2

[0132]

[0133]

[0134] Example 3

[0135] The cosmetic product of Example 3 was prepared according to the formula shown in Table 3. The preparation steps of the cosmetic product of Example 3 were the same as those of Example 1.

[0136] Table 3

[0137]

[0138] Example 4

[0139] The cosmetic product of Example 4 was prepared according to the formula shown in Table 4. The preparation steps of the cosmetic product of Example 4 were the same as those of Example 1.

[0140] Table 4

[0141]

[0142]

[0143] Example 5

[0144] The cosmetic product of Example 5 was prepared according to the formula shown in Table 5. The preparation steps of the cosmetic product of Example 5 were the same as those of Example 1.

[0145] Table 5

[0146]

[0147] Example 6

[0148] The cosmetic product of Example 6 was prepared according to the formula shown in Table 6. The preparation steps of the cosmetic product of Example 6 were the same as those of Example 1.

[0149] Table 6

[0150]

[0151] Example 7

[0152] The cosmetic product of Example 7 was prepared according to the formula shown in Table 7. The preparation steps of the cosmetic product of Example 7 were the same as those of Example 1.

[0153] Table 7

[0154]

[0155] Example 8

[0156] The cosmetic product of Example 8 was prepared according to the formula shown in Table 8. The preparation steps of the cosmetic product of Example 8 were the same as those of Example 1.

[0157] Table 8

[0158]

[0159] Comparative Example 1

[0160] Based on the formula in Table 1, the gel composition was removed and the amount of the pH regulator arginine was adjusted to prepare the cosmetic product of Comparative Example 1 by the following steps:

[0161] (1) Add the moisturizer and antioxidant to the deionized water solvent and disperse them evenly, then heat them in a water bath at about 75°C for 20 minutes to dissolve the antioxidant and obtain an aqueous phase solution.

[0162] (2) Disperse the colorant in the oil, stir and disperse at a speed of about 800 rpm for about 10 minutes to make a uniform oil phase mixture and heat it to 75°C for use.

[0163] (3) Slowly add the oil phase mixture into the aqueous phase solution obtained in step (1) and start stirring simultaneously (about 500 rpm).

[0164] (4) After the oil phase mixture is completely dispersed in the aqueous phase solution, a homogenizer is used to homogenize at a speed of about 4000 rpm for 10 minutes.

[0165] (6) Add a pH adjuster to adjust the pH of the product to 6 to obtain a cosmetic product.

[0166] Comparative Example 2

[0167] The cosmetic product of Comparative Example 2 was prepared according to the formula shown in Table 9. The preparation steps of the cosmetic product of Comparative Example 2 were the same as those of Example 1.

[0168] Table 9

[0169]

[0170] Comparative Example 3

[0171] The cosmetic product of Comparative Example 3 was prepared according to the formula shown in Table 10. The preparation steps of the cosmetic product of Comparative Example 3 were the same as those of Example 1.

[0172] Table 10

[0173]

[0174] Comparative Example 4

[0175] The cosmetic product of Comparative Example 4 was prepared according to the formula shown in Table 11. The preparation steps of the cosmetic product of Comparative Example 4 were the same as those of Example 1.

[0176] Table 11

[0177]

[0178] Comparative Example 5

[0179] The cosmetic product of Comparative Example 5 was prepared according to the formula shown in Table 12. The preparation steps of the cosmetic product of Comparative Example 5 were the same as those of Example 1.

[0180] Table 12

[0181]

[0182] Comparative Example 6

[0183] Based on the formulation in Table 1, the amount of the pH regulator arginine was adjusted so that the pH value of the cosmetic product was 3. In the formulation of Comparative Example 6, except for the amount of the pH regulator arginine, the types and amounts of the other materials were the same as those in Example 1.

[0184] The preparation steps of the cosmetic product of Comparative Example 6 are the same as those of Example 1.

[0185] Comparative Example 7

[0186] Based on the formulation in Table 1, the amount of the pH regulator arginine was adjusted so that the pH value of the cosmetic product was 9. In the formulation of Comparative Example 7, except for the amount of the pH regulator arginine, the types and amounts of the other materials were the same as those in Example 1.

[0187] The preparation steps of the cosmetic product of Comparative Example 7 are the same as those of Example 1.

[0188] Comparative Example 8

[0189] The only difference between Comparative Example 8 and Example 1 is that the polyacryloyldimethyl ammonium taurate used is of a different brand: ATBS-C. The types and amounts of the other materials are the same as those in Example 1.

[0190] The preparation steps of the cosmetic product of Comparative Example 8 are the same as those of Example 1.

[0191] Comparative Example 9

[0192] The only difference between Comparative Example 9 and Example 1 is that the acrylic acid (ester) / C10-30 alkanol acrylate cross-linked polymer used is of different brands: Ultrez 20. The types and amounts of the remaining materials were the same as those in Example 1.

[0193] The preparation steps of the cosmetic product of Comparative Example 9 are the same as those of Example 1.

[0194] Test section

[0195] 1. Characterization of swelling process

[0196] The swelling process of the gel composition of Example 1 was characterized by scanning electron microscopy (SEM). The characterization results are shown in FIG. Figure 4 As shown. Figure 4 As can be seen, the gel composition exhibits an interconnected pore structure during swelling. From (a) to (d), as the gel composition swells more fully, the pores inside gradually become larger, making this structure more conducive to the presence of solvents and other media.

[0197] 2. Steady-state shear test

[0198] The cosmetic product of Example 1 was subjected to steady-state shear tests at 20°C, 30°C, and 50°C using a rotational rheometer to obtain viscosity-shear rate curves at various test temperatures. Figure 5 As shown. Figure 5 It can be seen that when the shear rate exceeds about 10(1 / S), the viscosity of the cosmetic product of Example 1 decreases significantly, which indicates that the cosmetic product of Example 1 has a yield stress.

[0199] 3. “Water Explosion” Effect Test

[0200] Apply an appropriate amount of the cream to the subject's skin and observe whether water droplets appear. If water droplets appear, it is considered a clear "water-boosting" effect; otherwise, it is considered no clear "water-boosting" effect.

[0201] The test results of Example 1 and Comparative Example 6 are as follows: Figure 6 and Figure 7 shown.

[0202] 4. Material stability test

[0203] After the cosmetic products of the various examples and comparative examples were prepared, the obtained cosmetic products were observed to see whether they were uniform gel-like materials.

[0204] 5. Stability test of water-sensing gel composite factors

[0205] (1) Color powder stability test: After the prepared cosmetic product is left at 48°C for 30 days, the appearance of the cosmetic product is observed and the color powder stability is scored. The scoring criteria are as follows:

[0206] 3 points: The toner is stable, without color drift or banding;

[0207] 2 points: slight color drift / color banding;

[0208] 1 point: obvious color drift / color banding;

[0209] 0 points: Severe color drift / color banding.

[0210] (2) Oil stability test: After the prepared cosmetic product is left at 48°C for 30 days, the appearance of the cosmetic product is observed and the oil stability is scored. The scoring criteria are as follows:

[0211] 3 points: no oil;

[0212] 2 points: slightly oily;

[0213] 1 point: obvious oiliness;

[0214] 0 points: severe oil release / emulsification.

[0215] (3) High-temperature transportation stability test: The prepared cosmetic product was placed in a shaker at 48°C, with the shaker's vibration frequency adjusted to 100 rpm and amplitude adjusted to 25 mm to simulate the external force environment during transportation. The simulation lasted for 24 hours. After stopping, the product was allowed to stand for 1 hour. The appearance of the cosmetic product was then observed and the high-temperature transportation stability was scored. The scoring criteria are as follows:

[0216] 3 points: no floating color / color banding, and no oil;

[0217] 2 points: Slight color drift / color banding, and / or slight oiliness;

[0218] 1 point: obvious color drift / color banding, and / or obvious oiliness;

[0219] 0 points: Severe color floating / banding, and / or severe oiling / emulsion breaking.

[0220] The test results of each embodiment and comparative example are shown in Table 13.

[0221] Table 13

[0222]

[0223]

[0224] In Table 13, Comparative Example 1 did not add the gel composition, and the amount of oil used in Comparative Example 5 was too high, and a uniform gel-like material could not be prepared. Therefore, the "water bursting" effect test and the water-sensing gel composite factor stability test were not performed.

[0225] The test results in Table 13 show that Examples 1 to 8 employ the "water-based three-dimensional oil suspension technology" provided by the present application to prepare uniform gel-like silicone-free water-based cosmetic products. The color powder and oil can be stably suspended in the water-based gel composite factor in the cosmetic product. Figure 6 As shown, when the cosmetic product is applied to the user's skin surface, it has an obvious "water-bursting" effect.

[0226] Specifically, Examples 1-4 and Examples 6-7 further enhance the stability of the water-based gel composite factor at high temperatures or during the production and transportation of the cosmetic products by adjusting the content ratio of ammonium polyacryloyldimethyltaurate and acrylic acid (esters) / C10-30 alkyl acrylate crosspolymer in the cosmetic products. This ensures that even when the cosmetic product formula contains color powder, it remains stable in high-temperature transportation simulation tests without color drifting, streamers, or oiliness.

[0227] In contrast, in Comparative Example 1, the gel composition (ammonium polyacryloyldimethyltaurate, acrylic acid (esters) / C10-30 alkyl acrylate cross-polymer) was omitted from the cosmetic product formula of Example 1. Consequently, a uniform gel material could not be prepared, and the material exhibited severe stratification. Therefore, the "water-bursting" effect test and the water-sensing gel composite factor stability test could not be conducted.

[0228] The cosmetic product formula in Comparative Example 2 contained too little gel composition, reducing the stabilization ability of the hydrogel composite for oils and colorants. This made it difficult for these oils and colorants to remain stably suspended within the hydrogel composite. Furthermore, after exposure to high temperatures, which simulated transportation conditions, noticeable color banding and oil bleeding occurred.

[0229] The content of the gel composition in the cosmetic product formula of Comparative Example 3 is too high, resulting in a high consistency of the formula system and an insignificant "water-bursting" effect.

[0230] The oil content in the cosmetic product formula of Comparative Example 4 is too low, which affects the formation of water droplets and the "water bursting" effect is not obvious.

[0231] The oil content in the cosmetic product formula of Comparative Example 5 is too high, which will affect the stability of the water-sensing gel composite factor, making it difficult for the oil to be suspended in the water-sensing gel composite factor, and it is impossible to prepare a uniform gel material body. Therefore, the "water-bursting" effect test and the water-sensing gel composite factor stability test could not be carried out.

[0232] The cosmetic product formulas of Comparative Examples 6 and 7 have pH values ​​that are too high or too low, which are not conducive to the stabilization ability of the water-based gel composite factor on oils and colorants. After simulating the transportation environment at high temperature, obvious color bands and oil secretion appeared, and the expected "water bursting" effect could not be produced.

[0233] The ammonium polyacryloyldimethyltaurate or acrylic acid (ester) / C10-30 alkyl acrylate crosspolymer used in the cosmetic products of Comparative Examples 8 and 9 exhibit different viscosity characteristics in aqueous solution. While substantially uniform gels can be produced from Comparative Examples 8 and 9, they lack a "water-bursting" effect and lack optimal stability. Although ammonium polyacryloyldimethyltaurate and acrylic acid (ester) / C10-30 alkyl acrylate crosspolymer are already reported cosmetic raw materials, different grades of polymer exhibit different viscosity characteristics in water due to factors such as the number of polymer units and the polymerization form. The viscosity characteristics of these two polymers in water have a significant impact on the effectiveness of the present invention. Only by using ammonium polyacryloyldimethyltaurate and acrylic acid (ester) / C10-30 alkyl acrylate crosspolymer, which exhibit the water-soluble viscosity characteristics defined by the present invention, as raw materials can cosmetic products with a "water-bursting" effect and excellent stability be produced.

[0234] The above is only a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in the present application, and these modifications or replacements should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims. For example, in accordance with the inventive concept of the present application, on the premise of not affecting the effect of room temperature filling and reducing the amount of emulsifier, the technical solution of adding a small amount of silicone oil (for example, an amount of less than 0.1wt%) to the raw material composition should not be excluded from the scope of protection of the present application.

Claims

1. A silicone-free water-explosive cosmetic product, characterized in that: Including water-sensing gel complex factor, oil phase and pH regulator; Wherein, the water-sensing gel composite factor comprises a gel composition in a swollen state; The swollen gel composition comprises a gel composition and water, wherein the gel composition comprises ammonium polyacryloyldimethyltaurate and an acrylic acid (ester) / C10-30 alkyl acrylate cross-polymer; the viscosity of a 1% aqueous solution of the ammonium polyacryloyldimethyltaurate and a 0.5% aqueous solution of the acrylic acid (ester) / C10-30 alkyl acrylate cross-polymer is 55,000 to 65,000 cP; The oil phase includes oil, and the oil is suspended in the water-sensing gel composite factor; The pH value of the cosmetic product is 5-7, and based on the total mass of the cosmetic product being 100%, the mass proportion of the gel composition is 0.8%-1%, and the mass proportion of the oil is 5%-15%.

2. The silicone-free water-explosive cosmetic product according to claim 1, characterized in that: The mass ratio of the polyacryloyldimethyltaurate ammonium to the acrylic acid (ester) / C10-30 alkyl acrylate cross-linked polymer is 1:(0.2-0.6).

3. The silicone-free water-explosive cosmetic product according to claim 1, characterized in that: Based on the total mass of the cosmetic product as 100%, the gel composition includes 0.4% to 0.7% of ammonium polyacryloyldimethyltaurate and 0.1% to 0.3% of acrylic acid (ester) / C10-30 alkyl acrylate cross-linked polymer.

4. The silicone-free water-explosive cosmetic product according to claim 1, characterized in that: The oil comprises one or more of caprylic / capric triglyceride, petrolatum, isohexadecane, hydrogenated polyisobutene, squalane, and jojoba oil; and / or The pH regulator includes one or more of arginine, tromethamine, triethanolamine, and sodium hydroxide.

5. The silicone-free water-explosive cosmetic product according to claim 1, characterized in that: The oil phase further includes a colorant, and the colorant includes toner; The colorant is dispersed in the grease to form toner oil droplets.

6. The silicone-free water-explosive cosmetic product according to claim 5, characterized in that: The colorant also includes a toner surface treatment agent.

7. The silicone-free water-explosive cosmetic product according to claim 6, characterized in that: The toner includes one or more of CI 77891, CI 77491, CI 77492, and CI 77499; and / or The toner surface treatment agent includes one or more of hydrogenated lecithin, aluminum hydroxide, and lauroyl lysine.

8. The silicone-free water-explosive cosmetic product according to claim 1, characterized in that: The cosmetic product may also include a moisturizer and / or an antioxidant.

9. The silicone-free water-explosive cosmetic product according to any one of claims 1 to 8, characterized in that: Taking the total mass of the cosmetic product as 100%, the cosmetic product comprises: Gel composition: 0.8% to 1%; Water: 62.1% to 86.7%; Oil: 5% to 15%; Colorant: 2% to 5%; Moisturizer: 5% to 16%; Antioxidant 0.4% to 0.6%; pH adjuster: 0.1%~0.3%.

10. The silicone-free water-explosive cosmetic product according to claim 9, characterized in that: The moisturizing agent includes one or more of butylene glycol, 1,2-hexanediol, glycerol, glyceryl polyether-26, pentylene glycol, and methylpropylene glycol; and / or The antioxidant includes one or more of p-hydroxyacetophenone, tocopherol, capryloylglycine, and disodium edetate.

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