A sunscreen pack, and a method of preparing and using the same

Abstract

The present application provides a sunscreen package, a preparation method and application thereof, and belongs to the technical field of cosmetics. The sunscreen package comprises the following components in parts by weight: sunscreen 25-55 parts, film forming agent 3-12 parts, polyhydric alcohol 5-50 parts, thickening agent 0.01-1.5 parts, preservative 0.05-1 part, neutralizing agent 0.01-1.5 parts, wherein the film forming agent is ethylene / propylene acid copolymer and polyquaternary ammonium salt. The sunscreen is wrapped by the film forming agent composed of ethylene / propylene acid copolymer and polyquaternary ammonium salt and polyhydric alcohol, forming an alcohol-in-oil structure, reducing the irritation of the sunscreen product, and improving the sunscreen effect and waterproof effect of the sunscreen product.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of cosmetics, and particularly relates to a sunscreen agent package body and a preparation method and application thereof. BACKGROUND

[0002] With the improvement of people's living standards, people pay more and more attention to the health of the skin, and the protection of ultraviolet rays is also put on the agenda of daily protection, so sunscreen products gradually become a necessity for people to take care of their faces when going out. The sunscreen products on the market can be divided into organic sunscreen and physical sunscreen according to the type of sunscreen agent, and their mechanisms of action are ultraviolet absorption and physical light scattering, respectively, thereby reducing the damage of ultraviolet rays to the skin.

[0003] Currently, the products on the market usually use chemical sunscreen agents and physical sunscreen agents, and compound oils, emulsifiers, etc., to prepare sunscreen products of different dosage forms (milk, cream, spray, etc.) by emulsification. In order to improve the sunscreen effect of sunscreen products, more sunscreen agents are usually added to the sunscreen products, and too many sunscreen agents cause skin allergy in consumers, and after application, the skin is whitish, uneven, thick, sticky, shiny, etc., and has poor air permeability, which brings burden to the skin. SUMMARY

[0004] The present application aims to overcome the shortcomings of the prior art and provide a sunscreen agent package body and a preparation method and application thereof, which can effectively improve the air permeability, sunscreen effect and waterproof effect of sunscreen cosmetics.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present application is as follows: the present application provides a sunscreen agent package body, which comprises the following components by weight: 25-55 parts of sunscreen agent, 3-12 parts of film-forming agent, 5-50 parts of polyol, 0.01-1.5 parts of thickening agent, 0.05-1 part of preservative, and 0.01-1.5 parts of neutralizing agent, wherein the film-forming agent is ethylene / acrylic acid copolymer and polyquaternary ammonium salt.

[0006] In some embodiments, the mass ratio of the ethylene / acrylic acid copolymer and the polyquaternary ammonium salt is 0.6-3.

[0007] In some embodiments, the film-forming agent further comprises at least one of polyvinylpyrrolidone, VP / VA copolymer, polyvinyl alcohol, PVP / VA / vinyl propionate copolymer, water-based polyurethane, PPG-17 / IPD / DMPA copolymer, and acrylate / amino acid copolymer.

[0008] In some embodiments, the film-forming agent is ethylene / acrylic acid copolymer, polyquaternary ammonium salt and polyvinylpyrrolidone, and the mass of the polyvinylpyrrolidone is 5-14% of the total mass of the ethylene / acrylic acid copolymer, the polyquaternary ammonium salt and the polyvinylpyrrolidone.

[0009] In some embodiments, the polyol is at least one of glycerin, ethylene glycol, propylene glycol, butylene glycol, dipropylene glycol, pentylene glycol, hexylene glycol, and methylpropanediol.

[0010] In some embodiments, the sunscreen agent is at least one of bis-ethylhexyloxyphenol methoxyphenyl triazine, butyl methoxydibenzoylmethane, dioxybenzone, ethylhexyl dimethyl triazone, homosalate, oxybenzone, octinoxate, octocrylene, octisalate, padimate O, and phenylbenzimidazole sulfonic acid.

[0011] In some embodiments, the thickening agent is at least one of carbomer, acrylates copolymer, sodium polyacrylate, acrylates / C10-30 alkyl acrylate crosspolymer.

[0012] In some embodiments, the preservative is at least one of methylparaben, phenoxyethanol, chlorphenesin, propylparaben, and sodium benzoate.

[0013] In some embodiments, the neutralizing agent is at least one of triethanolamine, aminomethyl propanol, sodium hydroxide, arginine, and sodium citrate.

[0014] In a second aspect, a method for preparing the sunscreen agent package is provided, comprising the following steps:

[0015] S1: dissolving the sunscreen agent at a temperature of 75-85°C, and cooling to room temperature to obtain a sunscreen liquid;

[0016] S2: homogenizing the film-forming agent and the polyol at a rotation speed of 3000-8000 rpm for 3-5 min, then adding the thickening agent and homogenizing at a rotation speed of 5000-10000 rpm for 3-5 min, then adding the sunscreen liquid and homogenizing at a rotation speed of 5000-10000 rpm for 3-5 min, and finally adding the neutralizing agent and homogenizing at a rotation speed of 6000-12000 rpm for 3-5 min to obtain the sunscreen agent package.

[0017] In a third aspect, the sunscreen agent package is applied in sunscreen cosmetics.

[0018] In a fourth aspect, a sunscreen cosmetic is provided, comprising the sunscreen agent package, and the mass percentage content of the sunscreen agent package in the sunscreen cosmetic is 15-60%.

[0019] In some embodiments, the cosmetic is a sunscreen lotion, and the sunscreen lotion comprises the following mass percentage of components: sunscreen agent package 15-60%, oil 5-30%, skin conditioning agent 0.1-5%, humectant 0.1-20%, rheology modifier 0.05-5%, antioxidant 0.05-3%, preservative 0.1-0.6%, pH adjuster 0.05-5%, water balance.

[0020] Compared with the prior art, the beneficial effects of the present disclosure are: the present disclosure wraps the sunscreen agent with the film-forming agent composed of ethylene / propylene acid copolymer and polyquaternary ammonium salt and polyol to form an alcohol-in-oil structure, on the one hand, reducing the direct contact between the sunscreen agent and the skin during the application process, thereby reducing the irritation of the sunscreen product; on the other hand, the alcohol-in-oil structure can effectively reduce the photodegradation of the organic sunscreen agent, improve the sunscreen effect and waterproof effect of the sunscreen product. The polyquaternary ammonium salt can form a protective layer on the surface of the sunscreen agent, improve the dispersibility of the sunscreen agent, thereby improving the sunscreen effect and waterproof effect of the sunscreen product. In addition, the ethylene / propylene acid copolymer and the polyquaternary ammonium salt form a cross-linked structure, improve the strength of the polyquaternary ammonium salt protective layer, further inhibit the photodegradation of the organic sunscreen agent, and improve the sunscreen effect and waterproof effect of the sunscreen product. DETAILED DESCRIPTION

[0021] In order to facilitate the understanding of the present disclosure, the present disclosure will be described more fully below. However, the present disclosure can be implemented in many different forms, and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present disclosure more thorough and comprehensive.

[0022] As used herein the terms "a," "an," and "the" include singular and plural referents unless the context clearly dictates otherwise. The terms "comprising," "comprises," and "comprised of" as used herein are synonymous with "including," "includes," or "containing," "contains," and are inclusive or open-ended and do not exclude additional, non-recited elements or method steps.

[0023] The transitional phrase "consisting of" excludes any element, step, or ingredient not specified. If used in the claims, this phrase shall not be construed to mean that the noted elements or steps are essential to the practice of the claims. The phrase "consisting of" shall not be interpreted to mean that additional elements or steps are excluded. The transitional phrase "consisting essentially of" should be interpreted as excluding any elements not specified, but does not exclude additional elements that do not materially affect the basic and novel use of the claimed application. The phrase "consisting essentially of" can be construed to mean that additional elements or steps are not excluded if the additional elements do not materially affect the basic and novel use of the claimed application.

[0024] The transitional phrase "consisting of" excludes any element, step, or ingredient not specified. If used in the claims, this phrase shall not be construed to mean that the noted elements or steps are essential to the practice of the claims. The phrase "consisting of" shall not be interpreted to mean that additional elements or steps are excluded. The transitional phrase "consisting essentially of" should be interpreted as excluding any elements not specified, but does not exclude additional elements that do not materially affect the basic and novel use of the claimed application. The phrase "consisting essentially of" can be construed to mean that additional elements or steps are not excluded if the additional elements do not materially affect the basic and novel use of the claimed application.

[0025] When expressing amounts, such as the equivalent, concentration, or other values or parameters, as a range, preferably a range, or a series of upper preferred values and lower preferred values, it should be understood that all ranges formed by any pair of an upper or preferred value of any range with a lower or preferred value of any range, whether or not the range is expressly disclosed, are specifically disclosed. For example, when a range "1-5" is disclosed, the described range should be interpreted to include the range "1-4", "1-3", "1-2", "1-2 and 4-5", "1-3 and 5", etc. When numerical ranges are described herein, unless otherwise stated, the range is intended to include the endpoints and all integers and fractions within that range.

[0026] In these embodiments, the parts and percentages described are by mass, unless otherwise indicated.

[0027] "Mass parts" refers to a basic unit of measurement that represents the mass ratio relationship of multiple components, 1 part can represent any unit mass, such as 1g, 2.689g, etc. If we say that the mass parts of component A is a parts, and the mass parts of component B is b parts, it means that the mass ratio of component A and component B is a:b. Or, the mass of component A is aK, and the mass of component B is bK (K is an arbitrary number, indicating a multiple factor). It should not be misunderstood that unlike mass parts, the sum of the mass parts of all components is not limited to 100 parts.

[0028] "And / or" is used to indicate that one or both of the described conditions can occur, for example, A and / or B includes (A and B) and (A or B).

[0029] To solve the problem of poor waterproof effect and sunscreen effect of sunscreen cosmetics in the prior art.

[0030] The present application provides a sunscreen agent package body, comprising the following components by weight: sunscreen agent 25-55 parts, film forming agent 3-12 parts, polyhydric alcohol 5-50 parts, thickening agent 0.01-1.5 parts, preservative 0.05-1 parts, neutralizing agent 0.01-1.5 parts, wherein the film forming agent is ethylene / acrylic acid copolymer and polyquaternary ammonium salt.

[0031] As in different embodiments, the weight parts of the sunscreen agent can be, but are not limited to, 25 parts, 28 parts, 30 parts, 32 parts, 35 parts, 37 parts, 40 parts, 43 parts, 45 parts, 48 parts, 50 parts, 53 parts, 55 parts;

[0032] As in different embodiments, the weight parts of the film forming agent can be, but are not limited to, 3 parts, 4 parts, 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, 10 parts, 11 parts, 12 parts;

[0033] The weight parts of the polyol can be, but are not limited to, 5 parts, 10 parts, 15 parts, 20 parts, 25 parts, 30 parts, 35 parts, 40 parts, 45 parts, 50 parts, in different embodiments.

[0034] The weight parts of the thickening agent can be, but are not limited to, 0.01 parts, 0.05 parts, 0.1 parts, 0.3 parts, 0.5 parts, 0.7 parts, 0.9 parts, 1.1 parts, 1.3 parts, 1.5 parts, in different embodiments.

[0035] The weight parts of the preservative can be, but are not limited to, 0.05 parts, 0.1 parts, 0.2 parts, 0.4 parts, 0.6 parts, 0.8 parts, 1 part, in different embodiments.

[0036] The weight parts of the neutralizing agent can be, but are not limited to, 0.01 parts, 0.05 parts, 0.1 parts, 0.3 parts, 0.5 parts, 0.7 parts, 0.9 parts, 1.1 parts, 1.3 parts, 1.5 parts, in different embodiments.

[0037] The present application wraps the sunscreen agent with the film-forming agent composed of ethylene / propylene acid copolymer and polyquaternary ammonium salt and polyol to form an oil-in-alcohol structure, which on the one hand reduces the direct contact between the sunscreen agent and the skin during the application of the sunscreen product, thereby reducing the irritation of the sunscreen product; on the other hand, the oil-in-alcohol structure can effectively reduce the photodegradation of the organic sunscreen agent, thereby improving the sunscreen effect and waterproof effect of the sunscreen product. The polyquaternary ammonium salt can form a protective layer on the surface of the sunscreen agent, thereby improving the dispersibility of the sunscreen agent and the sunscreen effect and waterproof effect of the sunscreen product. In addition, the ethylene / propylene acid copolymer and the polyquaternary ammonium salt form a crosslinked structure, thereby improving the strength of the polyquaternary ammonium salt protective layer, further inhibiting the photodegradation of the organic sunscreen agent, and improving the sunscreen effect and waterproof effect of the sunscreen product.

[0038] In some embodiments, the mass ratio of the ethylene / propylene acid copolymer and the polyquaternary ammonium salt is 0.6-3, which can be, but is not limited to, 0.6, 1, 1.4, 1.8, 2.2, 2.6, 3.

[0039] In the present application, when the mass ratio of the ethylene / propylene acid copolymer and the polyquaternary ammonium salt is within the above range, the sunscreen effect and waterproof effect of the sunscreen product can be effectively improved.

[0040] Exemplarily, the polyquaternary ammonium salt can be at least one of polyquaternary ammonium salt-16, polyquaternary ammonium salt-28, polyquaternary ammonium salt-11, and polyquaternary ammonium salt-69.

[0041] In some embodiments, the film-forming agent further comprises at least one of polyvinylpyrrolidone, VP / VA copolymer, polyvinyl alcohol, PVP / VA / vinyl propionate copolymer, aqueous polyurethane, PPG-17 / IPD / DMPA copolymer, acrylate / amino acid ester copolymer.

[0042] In the present application, when the film-forming agent further comprises the above-mentioned components, the sunscreen product can have better air permeability, sunscreen effect and waterproof effect.

[0043] Illustratively, the aqueous polyurethane can be at least one of polyurethane-2, polyurethane-11, polyurethane-35.

[0044] In some embodiments, the film-forming agent is ethylene / propylene acid copolymer, polyquaternary ammonium salt and polyvinylpyrrolidone, the mass of the polyvinylpyrrolidone is 5-14% of the total mass of the ethylene / propylene acid copolymer, polyquaternary ammonium salt and polyvinylpyrrolidone; for example, it can be but is not limited to 5%, 7%, 9%, 11%, 13%, 15%.

[0045] In the present application, within the above-mentioned preferred range, the sunscreen product containing the sunscreen encapsulate has better sunscreen effect and waterproof effect.

[0046] In some embodiments, the polyhydric alcohol is at least one of glycerol, ethylene glycol, propylene glycol, butylene glycol, dipropylene glycol, pentylene glycol, hexylene glycol, methyl propylene glycol.

[0047] In some embodiments, the sunscreen agent is at least one of bis-ethylhexyloxyphenol methoxyphenyl triazine, butyl methoxydibenzoylmethane, diethylamino hydroxybenzoyl hexyl benzoate, 4-methylbenzylidene camphor, benzophenone-3, benzophenone-4, diethylhexyl butylamidotriazone, ethylhexyl methoxycinnamate, isooctyl salicylate, ethylhexyl triazone, homosalate, isoamyl p-methoxycinnamate, octocrylene.

[0048] In some embodiments, the thickening agent is at least one of carbomer, acrylate copolymer, sodium polyacrylate, acrylate / C10-30 alkyl alcohol acrylate cross-linked polymer.

[0049] In some embodiments, the preservative is at least one of methylparaben, phenoxyethanol, chlorphenesin, propylparaben, sodium benzoate.

[0050] In some embodiments, the neutralizing agent is at least one of triethanolamine, aminomethyl propanol, sodium hydroxide, arginine, sodium citrate.

[0051] In a second aspect, a method for preparing the sunscreen encapsulate is provided, comprising the following steps:

[0052] S1: dissolving the sunscreen at a temperature of 75-85℃, cooling to room temperature to obtain a sunscreen liquid;

[0053] S2: homogenizing the film-forming agent and the polyol at a rotation speed of 3000-8000rpm for 3-5min, then adding the thickening agent, homogenizing at a rotation speed of 5000-10000rpm for 3-5min, then adding the sunscreen liquid, homogenizing at a rotation speed of 5000-10000rpm for 3-5min, and finally adding the neutralizing agent, homogenizing at a rotation speed of 6000-12000rpm for 3-5min to obtain the sunscreen encapsulate.

[0054] The sunscreen encapsulate is prepared by a specific feeding sequence, so that the waterproof effect and sunscreen effect of the sunscreen product are better.

[0055] In a third aspect, the sunscreen encapsulate is provided for use in sunscreen cosmetics.

[0056] In a fourth aspect, a sunscreen cosmetic is provided, comprising the sunscreen encapsulate, and the mass percentage of the sunscreen encapsulate in the sunscreen cosmetic is 15-60%, for example, but not limited to, 15%, 17%, 20%, 23%, 25%, 30%, 35%, 40%, 45%, 50%, 55%, 58%, 60%.

[0057] The sunscreen cosmetic prepared by using the sunscreen encapsulate of the present application can be prepared by mixing the sunscreen encapsulate and optional raw materials for sunscreen cosmetics. As the optional raw materials for sunscreen cosmetics, components such as the following can be used: oil agents, surfactants, moisturizers, higher alcohols, metal ion chelating agents, natural and synthetic polymers, water-soluble and oil-soluble polymers, ultraviolet shielding agents, various extracts, coloring agents including pigments and organic dyes, preservatives, antioxidants, dyes, thickening agents, pH adjusting agents, fragrances, cooling agents, antiperspirants, fungicides, skin activators, and various powders. The mixture of these components can be prepared in various forms, such as lotions, creams, pastes, sticks, emulsions.

[0058] In some embodiments, the cosmetic is a sunscreen lotion, and the sunscreen lotion comprises the following mass percentage of components: sunscreen encapsulate 15-60%, oil 5-30%, skin conditioning agent 0.1-5%, moisturizer 0.1-20%, rheology modifier 0.05-5%, antioxidant 0.05-3%, preservative 0.1-0.6%, pH adjusting agent 0.05-5%, and water in the balance.

[0059] As in different embodiments, the sunscreen agent can be present in a weight percent of, but not limited to, 15%, 20%, 23%, 25%, 30%, 35%, 40%, 45%, 50%, 55%, 58%, 60%.

[0060] As in different embodiments, the oil can be present in a weight percent of, but not limited to, 5%, 7%, 9%, 11%, 13%, 15%, 17%, 19%, 21%, 23%, 25%, 28%, 30%;

[0061] As in different embodiments, the skin conditioning agent can be present in a weight percent of, but not limited to, 0.1%, 0.5%, 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, 5%;

[0062] As in different embodiments, the humectant can be present in a weight percent of, but not limited to, 0.1%, 1%, 2%, 4%, 6%, 8%, 10%, 12%, 14%, 16%, 18%, 20%;

[0063] As in different embodiments, the rheology modifier can be present in a weight percent of, but not limited to, 0.05%, 0.1%, 0.5%, 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, 5%;

[0064] As in different embodiments, the antioxidant can be present in a weight percent of, but not limited to, 0.05%, 0.1%, 0.5%, 1%, 1.5%, 2%, 2.5%, 3%;

[0065] As in different embodiments, the preservative can be present in a weight percent of, but not limited to, 0.1%, 0.15%, 0.2%, 0.25%, 0.3%, 0.35%, 0.4%, 0.45%, 0.5%, 0.55%, 0.6%;

[0066] As in different embodiments, the pH modifier can be present in a weight percent of, but not limited to, 0.05%, 0.1%, 0.5%, 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, 5%;

[0067] As in different embodiments, the oil is one or more of ethylhexyl palmitate, dicaprylyl carbonate, hydrogenated polyisobutene, butylenes glycol cocoate, propylheptyl stearate, isopropyl palmitate, isostearyl isostearate, C12-13 alkyl lactate, caprylic / capric triglyceride, propylene glycol dicaprylate / dicaprate, glyceryl triethylhexanoate, hydrogenated polydecene, diisostearyl adipate, isoamyl laurate, C12-15 alkyl benzoate, isohexadecane, coco-caprylate / caprate, butyloctanol salicylate, isopropyl lauroyl sarcosinate, dimethicone.

[0068] As in different embodiments, the skin conditioning agent is one or more of allantoin, sodium hyaluronate, linolenic acid, niacinamide, chitosan, panthenol, beta-glucan, inositol, acetyl sodium hyaluronate, hydroxysuccinoglycosides.

[0069] As in different embodiments, the humectant is one or more of polyethylene glycol-8, betaine, trehalose, sodium polyglutamate, methyl gluceth-10, methyl gluceth-20, PPG-24-glyceryl ether-24, PEG / PPG-17 / 6 copolymer.

[0070] As in different embodiments, the rheology modifier is one or more of xanthan gum, ammonium acryloyldimethyltaurate / VP copolymer, acrylates copolymer, carbomer, sodium carbomer, acrylates / C10-30 alkyl acrylate crosspolymer, acrylates / beheneth-25 methacrylate copolymer, acrylates / palmeth-25 acrylate copolymer, PEG-240 / HDI copolymer bis-decyltetradecin ether-20 ether, acrylates / vinyl isodecanoate crosspolymer, ammonium acryloyldimethyltaurate / beheneth-25 methacrylate crosspolymer, hydroxyethyl acrylate / sodium acryloyldimethyltaurate copolymer, sodium polyacrylate, hydroxyethyl cellulose, polyacrylate crosspolymer-6.

[0071] As in different embodiments, the antioxidant is one or more of para-hydroxyacetophenone, tocopheryl acetate, butylated hydroxytoluene, pentaerythrityl tetra-di-t-butyl hydroxyhydrocinnamate, tert-butylhydroquinone.

[0072] As in different embodiments, the preservative is one or more of methylparaben, phenoxyethanol, chlorphenesin, propylparaben, DMDM hydantoin, sodium benzoate.

[0073] As in different embodiments, the pH regulator is one or more of triethanolamine, tromethamine, sodium hydroxide, arginine, sodium citrate, and tris.

[0074] The cosmetic of the present application can be prepared by any suitable method known in the art. For example, it can be prepared using equipment commonly used in the cosmetic field, such as dissolving tanks, emulsifying kettles, dispersers, delivery pumps, etc., according to processes known in the art. For example, water-soluble materials can first be dissolved in a water-phase dissolving kettle, and oil-soluble materials (e.g., sunscreen agents, oils) can be put into an oil-phase dissolving kettle, and the temperature of the two kettles can be heated to about 80°C, wherein for materials that are prone to caking, they can be pre-dispersed using a disperser; for example, powder materials (e.g., zinc oxide, titanium dioxide) can be dispersed using a suitable solvent and dispersant, and then homogenized for 5-10 min, and then added to the oil phase, and then homogenized again for 5-10 min; after homogenization is complete, the oil phase and the water phase can be delivered to an emulsifying kettle, and homogenized and emulsified for about 5-15 min; after emulsification is complete, the temperature of the material can be reduced to room temperature, and optionally, fragrances, preservatives, etc. can be added, and the pH of the product can be adjusted as needed; after relevant detection indexes are qualified, the product can be filled and discharged.

[0075] The above preparation process is merely exemplary, and a person skilled in the art can increase or adjust it according to the requirements of the dosage form, so as to prepare various dosage forms such as sprays, emulsions, gels / jellies, creams, air cushions / foundations, etc.

[0076] In order to further illustrate the present application, the sunscreen agent package provided by the present application and the preparation method and application thereof are described in detail below in conjunction with the drawings and examples, but they should not be understood as limiting the scope of protection of the present application.

[0077] Examples 1-14 and Comparative Examples 1-2

[0078] The sunscreen agent package provided by Examples 1-14 and Comparative Examples 1-2 of the present application has the components shown in Table 1 and Table 2;

[0079] The preparation method of the sunscreen agent package of Examples 1-14 and Comparative Examples 1-2 is as follows:

[0080] S1: Dissolve the sunscreen agent at a temperature of 80°C, and cool to room temperature to obtain a sunscreen liquid;

[0081] S2: Homogenize the film-forming agent and the polyol at a speed of 5000 rpm for 4 min, then add the thickening agent and homogenize at a speed of 8000 rpm for 4 min, then add the sunscreen liquid and homogenize at a speed of 8000 rpm for 5 min, and finally add the neutralizing agent and homogenize at a speed of 10000 rpm for 3 min to obtain the sunscreen agent package.

[0082] Table 1

[0083]

[0084] Table 2

[0085]

[0086]

[0087] Comparative Example 3

[0088] The composition of the sunscreen encapsulate of the present comparative example is the same as that of Example 1, and the preparation method of the sunscreen encapsulate of the present comparative example is as follows:

[0089] S1: dissolve the sunscreen at a temperature of 80°C, cool to room temperature to obtain a sunscreen liquid;

[0090] S2: homogenize the film-forming agent and the polyol at a speed of 5000 rpm for 4 min, then add the sunscreen liquid, homogenize at a speed of 8000 rpm for 4 min, then add the thickening agent, homogenize at a speed of 8000 rpm for 5 min, and finally add the neutralizing agent, homogenize at a speed of 10000 rpm for 3 min to obtain the sunscreen encapsulate.

[0091] Comparative Example 4

[0092] The composition of the sunscreen encapsulate of the present comparative example is the same as that of Example 1, and the preparation method of the sunscreen encapsulate of the present comparative example is as follows:

[0093] S1: dissolve the sunscreen at a temperature of 80°C, cool to room temperature to obtain a sunscreen liquid;

[0094] S2: homogenize the film-forming agent and the polyol at a speed of 5000 rpm for 4 min, then add the neutralizing agent, homogenize at a speed of 8000 rpm for 4 min, then add the sunscreen liquid, homogenize at a speed of 8000 rpm for 5 min, and finally add the thickening agent, homogenize at a speed of 10000 rpm for 3 min to obtain the sunscreen encapsulate.

[0095] Comparative Example 5

[0096] The composition of the sunscreen encapsulate of the present comparative example is the same as that of Example 1, and the preparation method of the sunscreen encapsulate of the present comparative example is as follows:

[0097] S1: dissolve the sunscreen at a temperature of 80°C, cool to room temperature to obtain a sunscreen liquid;

[0098] S2: homogenize the film forming agent and the polyol at a rotation speed of 5000 rpm for 4 min, then add the neutralizing agent, homogenize at a rotation speed of 8000 rpm for 4 min, then add the thickening agent, homogenize at a rotation speed of 8000 rpm for 5 min, and finally add the sunscreen lotion, homogenize at a rotation speed of 10000 rpm for 3 min to obtain the sunscreen agent encapsulation body comparative example 6.

[0099] The composition of the sunscreen agent encapsulation body of the present comparative example is the same as that of example 1, and the preparation method of the sunscreen agent encapsulation body of the present comparative example is as follows:

[0100] S1: dissolve the sunscreen agent at a temperature of 80℃, cool to room temperature to obtain a sunscreen lotion;

[0101] S2: homogenize the film forming agent and the polyol at a rotation speed of 5000 rpm for 4 min, then add the thickening agent, the sunscreen lotion and the neutralizing agent, homogenize at a rotation speed of 8000 rpm for 12 min to obtain the sunscreen agent encapsulation body.

[0102] Comparative example 7

[0103] The composition of the sunscreen agent encapsulation body of the present comparative example is the same as that of example 1, and the preparation method of the sunscreen agent encapsulation body of the present comparative example is as follows:

[0104] S1: dissolve the sunscreen agent at a temperature of 80℃, cool to room temperature to obtain a sunscreen lotion;

[0105] S2: homogenize the film forming agent, the polyol, the thickening agent and the sunscreen lotion at a rotation speed of 8000 rpm for 13 min, and finally add the neutralizing agent, homogenize at a rotation speed of 10000 rpm for 3 min to obtain the sunscreen agent encapsulation body.

[0106] Application examples 1-16, comparative application examples 1-7 and blank application examples

[0107] The sunscreen cream provided by the application examples, the comparative application examples and the blank application examples has the components (mass percentage) shown in Table 3; wherein the two sunscreen agent encapsulation bodies used in application examples 1-14 are respectively the sunscreen agent encapsulation bodies prepared in examples 1-14, the sunscreen agent encapsulation bodies used in comparative application examples 1-7 are respectively the sunscreen agent encapsulation bodies prepared in comparative examples 1-7, and the sunscreen agent encapsulation bodies used in application examples 15-16 are the sunscreen agent encapsulation body prepared in example 1;

[0108] The preparation method of the sunscreen cream of the application examples, the comparative application examples and the blank application examples is as follows:

[0109] Prepare the water phase: mix the water, the skin conditioner, the moisturizing agent, the rheological modifier and the preservative uniformly to prepare the water phase;

[0110] Preparation of oil phase: the oil and antioxidant were mixed uniformly to obtain the oil phase;

[0111] Preparation of emulsion: the oil phase and the water phase were heated to 75-85℃ respectively, then the oil phase was added into the water phase, and emulsification homogenization was carried out to obtain the emulsion;

[0112] Preparation of oil-in-water sunscreen emulsion: the emulsion was cooled to room temperature, then the sunscreen agent package and the pH adjuster were added, and stirring was carried out to obtain the sunscreen emulsion.

[0113] Table 3

[0114]

[0115] Effect example 1

[0116] The skin feel, sunscreen effect and water resistance of the sunscreen emulsion obtained in the application example, the comparative application example and the blank application example were tested.

[0117] The test method of skin feel score was as follows: 30 volunteers were recruited according to T / GDCA003-2020 T / GDCA General Guidelines for Sensory Evaluation of Cosmetics, and the volunteers were evaluated from the following five dimensions: ease of application (0-5 points corresponding to difficult to easy application), water feeling (0-5 points corresponding to weak to strong water feeling), skin smoothness (0-5 points corresponding to rough to smooth), skin stickiness (0-5 points corresponding to sticky to non-sticky), and overall absorption speed (0-5 points corresponding to slow to fast). The comprehensive score was the average value of the sum of the scores of the five dimensions, and the higher the score, the better the skin feel.

[0118] The test method of sunscreen effect was as follows: the sunscreen emulsion prepared was tested on the UV-2000S device according to SN / T 5150-2019 In Vitro Determination Method for UVA Light Protection Effect of Sunscreen Cosmetics;

[0119] The calculation formula of SPF was as follows:

[0120]

[0121] In formula 1, E(λ) is the erythema effect coefficient;

[0122] I(λ) is the radiation intensity of the UV light source;

[0123] A0 is the average monochromatic absorbance of each sample before UV irradiation;

[0124] d(λ) is the step length of wavelength (nm).

[0125] The calculation formula of PA was as follows:

[0126]

[0127] P(λ) - PPD spectral index in formula 2;

[0128] I(λ) - spectral irradiance of the UVA light source;

[0129] A0 - monochromatic light absorbance of the test glass before exposure to UV;

[0130] C - adjustment coefficient;

[0131] dλ - measurement wave step (nm).

[0132] The test method for waterproof effect is: referring to the sunscreen cosmetic waterproof performance determination method simulation waterproof test experiment in the cosmetic safety technical specification (2015 edition), the sample to be tested is placed in a rotating bathtub, the water temperature is maintained at 25℃, and after 40 minutes, the sunscreen index is tested by referring to the SN / T 5150-2019 sunscreen cosmetic UVA light protection effect in vitro determination method.

[0133] The test results are shown in Table 4.

[0134] Table 4

[0135]

[0136]

[0137] From the experimental data in Table 4, it can be known that the sunscreen SPF of the sunscreen product containing the sunscreen encapsulate of the present application is ≥25.3, the sunscreen PA is ≥5.6, the waterproof SPF is ≥21.0, and the waterproof PA is ≥4.2, indicating that the sunscreen effect and waterproof effect of the sunscreen encapsulate of the present application are good.

[0138] From the comparison of application example 1 and application examples 4-7, it can be known that when the mass ratio of ethylene / propylene acid copolymer and polyquaternary ammonium salt is 0.6-3, the sunscreen SPF of the sunscreen product is ≥46.2, the sunscreen PA is ≥11.8, the waterproof SPF is ≥39.3, and the waterproof PA is ≥9.6, indicating that when the mass ratio of ethylene / propylene acid copolymer and polyquaternary ammonium salt is 0.6-3, the sunscreen effect and waterproof effect of the sunscreen encapsulate are better.

[0139] Comparing application example 1 with application examples 8-14, when the film forming agent is ethylene / acrylic acid copolymer, polyquaternary ammonium salt and polyvinylpyrrolidone, the sunscreen product has a sunscreen SPF≥48.3, a sunscreen PA≥12.3, a waterproof SPF≥41.6 and a waterproof PA≥10.6, and when the film forming agent is ethylene / acrylic acid copolymer, polyquaternary ammonium salt and polyvinylpyrrolidone, the sunscreen agent package has better sunscreen effect and waterproof effect; when the mass of polyvinylpyrrolidone is 5-15% of the total mass of ethylene / acrylic acid copolymer, polyquaternary ammonium salt and polyvinylpyrrolidone, the sunscreen product has a sunscreen SPF≥49.9, a sunscreen PA≥12.6, a waterproof SPF≥43.5 and a waterproof PA≥10.9, indicating that when the mass of polyvinylpyrrolidone is 5-15% of the total mass of ethylene / acrylic acid copolymer, polyquaternary ammonium salt and polyvinylpyrrolidone, the sunscreen agent package has better sunscreen effect and waterproof effect.

[0140] Comparing application example 1 with comparative application examples 1-2, when any of ethylene / acrylic acid copolymer and polyquaternary ammonium salt is absent, the sunscreen product has a sunscreen SPF≤40.8, a sunscreen PA≤9.5, a waterproof SPF≤29.3 and a waterproof PA≤7.1, indicating that ethylene / acrylic acid copolymer and polyquaternary ammonium salt in the sunscreen agent package of the present application have synergistic effect, improving the sunscreen effect and waterproof effect of the sunscreen agent package.

[0141] Comparing application example 1 with comparative application examples 3-7, in the preparation process of the sunscreen agent package, the components are not added in the specific order of the present application or the process conditions are not within the scope of the present application, and the sunscreen effect and waterproof effect of the obtained sunscreen agent package are significantly reduced.

[0142] Finally, it should be noted that the above examples are used to illustrate the technical solutions of the present disclosure and are not a limitation on the protection scope of the present disclosure. Although the present disclosure has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present disclosure can be modified or replaced with equivalents without departing from the essence and scope of the technical solutions of the present disclosure.

Claims

1. A sunscreen inclusion body, characterized in that: The invention comprises the following components in parts by weight: 25-55 parts of sunscreen, 3-12 parts of film former, 5-50 parts of polyol, 0.01-1.5 parts of thickener, 0.05-1 parts of preservative, and 0.01-1.5 parts of neutralizer, wherein the film formers are ethylene / acrylic acid copolymer and polyquaternium salt; The mass ratio of the ethylene / acrylic acid copolymer to the polyquaternium salt is 0.6-3; The polyol is at least one of glycerol, ethylene glycol, propylene glycol, butylene glycol, dipropylene glycol, pentanediol, hexylene glycol, and methylpropylene glycol; The sunscreen is at least one of bis-ethylhexyloxyphenol methoxyphenyl triazine, butyl methoxydibenzoylmethane, diethylaminohydroxybenzoyl hexyl benzoate, 4-methylbenzylidene camphor, benzophenone-3, benzophenone-4, diethylhexyl butyramido triazone, ethylhexyl methoxycinnamate, isooctyl salicylate, ethylhexyl triazone, homosalate, isopentyl p-methoxycinnamate, and octocrylene; The preparation method of the sunscreen inclusion body comprises the following steps: S1: dissolving the sunscreen at a temperature of 75-85°C and cooling to room temperature to obtain a sunscreen solution; S2: Homogenize the film-forming agent and polyol at a speed of 3000-8000 rpm for 3-5 minutes, then add the thickener and homogenize at a speed of 5000-10000 rpm for 3-5 minutes, then add the sunscreen liquid and homogenize at a speed of 5000-10000 rpm for 3-5 minutes, and finally add the neutralizer and homogenize at a speed of 6000-12000 rpm for 3-5 minutes to obtain the sunscreen inclusion body.

2. The sunscreen inclusion body according to claim 1, wherein: The film-forming agent further comprises at least one of polyvinyl pyrrolidone, VP / VA copolymer, polyvinyl alcohol, PVP / VA / vinyl propionate copolymer, waterborne polyurethane, PPG-17 / IPD / DMPA copolymer, and acrylic acid (ester) / urethane copolymer.

3. The sunscreen inclusion body according to claim 2, wherein: The film-forming agent comprises ethylene / acrylic acid copolymer, polyquaternium salt and polyvinyl pyrrolidone, and the mass of the polyvinyl pyrrolidone is 5-15% of the total mass of the ethylene / acrylic acid copolymer, polyquaternium salt and polyvinyl pyrrolidone.

4. The sunscreen inclusion body according to claim 1, wherein: The thickener is at least one of carbomer, acrylic acid (ester) copolymer, sodium polyacrylate, and acrylic acid (ester) / C10-30 alkyl acrylate cross-linked polymer; and / or the preservative is at least one of methylparaben, phenoxyethanol, chlorphenesin, propylparaben, and sodium benzoate; And / or, the neutralizing agent is at least one of triethanolamine, aminomethyl propanol, sodium hydroxide, arginine, and sodium citrate.

5. The method for preparing the sunscreen inclusion body according to any one of claims 1 to 4, characterized in that: The following steps are involved: S1: dissolving the sunscreen at a temperature of 75-85°C and cooling to room temperature to obtain a sunscreen solution; S2: Homogenize the film-forming agent and polyol at a speed of 3000-8000 rpm for 3-5 minutes, then add the thickener and homogenize at a speed of 5000-10000 rpm for 3-5 minutes, then add the sunscreen liquid and homogenize at a speed of 5000-10000 rpm for 3-5 minutes, and finally add the neutralizer and homogenize at a speed of 6000-12000 rpm for 3-5 minutes to obtain the sunscreen inclusion body.

6. Use of the sunscreen inclusion body according to any one of claims 1 to 4 in the preparation of sunscreen cosmetics.

7. A sunscreen cosmetic, characterized in that: The sunscreen inclusions according to any one of claims 1 to 4 are included, and the mass percentage of the sunscreen inclusions in the sunscreen cosmetics is 15-60%.

8. The sunscreen cosmetic according to claim 7, wherein The cosmetic is a sunscreen lotion, and the sunscreen lotion comprises the following components in percentage by mass: 15-60% sunscreen inclusions, 5-30% oil, 0.1-5% skin conditioner, 0.1-20% moisturizer, 0.05-5% rheology regulator, 0.05-3% antioxidant, 0.1-0.6% preservative, 0.05-5% pH regulator, and the balance water.

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