A surfactant composition, a surfactant system and use thereof

Abstract

The application discloses a surfactant composition, a surfactant system and application thereof, and belongs to the technical field of cosmetics, and comprises the following components in parts by weight: 5-11 parts of sodium C14-16 olefin sulfonate, 1-6 parts of an amino acid surfactant, 0.5-5 parts of an alkyl polyglycoside surfactant, 0.1-2 parts of a bio-based surfactant and 1-5 parts of an amphoteric surfactant; the bio-based surfactant comprises at least one of sophorolipid, rhamnolipid, soapberry extract and oil tea dregs extract. The composition disclosed by the application has very low surface tension and cmc value, the molecules in a surface adsorption layer are closely arranged to promote surface adsorption, the foaming performance and foaming stability are effectively improved, good stability is achieved in a wide pH (5-10) range, excellent high and low temperature stability is achieved, the surfactant composition disclosed by the application has low irritation, is safe to use, and has a wide application prospect.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of cosmetic technology, in particular to a surfactant composition, a surfactant system and application thereof. BACKGROUND

[0002] With the improvement of people's living standards, the demand for cleaning and skin care products is also increasing. In detergents, shampoos, shower gels and other personal care products, the richness and stability of the foam are one of the important indicators to measure the quality of the product. Surfactants are the basis and key ingredients of personal care products, which determine the foam richness and stability of personal care products and washing performance. Traditional surfactants can produce foam, but often the amount of foam is insufficient or the stability of the foam is poor, which affects the use effect and user experience of the product.

[0003] Surfactants, also known as interfacial active agents, are compounds that can significantly reduce the surface tension or interfacial tension between two liquids, liquid-gas, or liquid-solid. The molecular structure of surfactants has two properties: one end is a hydrophilic group, and the other end is a hydrophobic group. The hydrophilic group is often a polar group, such as carboxylic acid, sulfonic acid, sulfuric acid, amino or amine group and its salt, hydroxyl group, amide group, ether bond, etc. can also be used as polar hydrophilic groups; while the hydrophobic group is often a non-polar hydrocarbon chain, such as a hydrocarbon chain of 8 carbon atoms or more. Surfactants are divided into ionic surfactants (including cationic surfactants, anionic surfactants, amphoteric surfactants), non-ionic surfactants, complex surfactants, and other surfactants. They are widely used in daily life and many industrial and agricultural production fields, such as emulsifiers, detergents, wetting agents, penetrating agents, foaming agents, solubilizers, dispersants, etc.

[0004] Traditional surfactants have good cleaning effect, but often have strong irritation, which may cause skin allergy, redness, itching and other discomfort. This is because some surfactants may cause damage to the skin, break the integrity of the cell membrane, and make the skin more sensitive to external stimuli. Especially for people who already have skin problems and allergic reactions, excessive use of such surfactants may exacerbate the symptoms.

[0005] CN112295500A discloses a surfactant composition and a preparation method thereof, and the components are: a pH stabilizer, an anionic surfactant and water, the anionic surfactant includes fatty alcohol polyoxyethylene ether sulfate and / or fatty alcohol sulfate; the pH stabilizer includes stabilizer A and stabilizer B; stabilizer A is citric acid or citrate, and stabilizer B contains an aromatic ring in the molecular structure, and among the carbons constituting the aromatic ring, the carbon connected with the phenolic hydroxyl group and the following adjacent carbon of the carbon connected with the phenolic hydroxyl group are included: the adjacent carbon is connected with a tertiary carbon group, and specific stabilizer A and stabilizer B need to be added to maintain the pH stability of the system, and such stabilizers have certain irritation to the skin, which may cause skin swelling and pain.

[0006] CN104095764A discloses an amino acid type surfactant self-thickening composition, which comprises: cocamide propyl hydroxy sultaine and lauroyl methylsarcosine sodium as thickening agents, and a carrier, wherein the weight ratio of the cocamide propyl hydroxy sultaine and lauroyl methylsarcosine sodium is 1:1 to 3:1, and it is further disclosed that the combination of cocamide propyl hydroxy sultaine and lauroyl methylsarcosine sodium synergistically improves the viscosity of the system, but the foaming performance is poor when only using cocamide propyl hydroxy sultaine and lauroyl methylsarcosine sodium as the main surfactant, and it is difficult to form rich and stable foam.

[0007] In view of this, the present application is proposed. SUMMARY

[0008] The present application aims to overcome the deficiencies in the prior art and provide a surfactant composition, a surfactant system and the application thereof, the surfactant has excellent foaming performance and foaming stability, and has good stability in a wide pH (5-10) range.

[0009] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is:

[0010] A surfactant composition, comprising the following components in parts by weight: 5-11 parts of sodium C14-16 olefin sulfonate, 1-6 parts of amino acid surfactant, 0.5-5 parts of alkyl glycoside surfactant, 0.1-2 parts of bio-based surfactant, and 1-5 parts of amphoteric surfactant.

[0011] The bio-based surfactant includes at least one of sophorolipid, rhamnolipid, soapberry extract and oil tea dregs extract.

[0012] As a preferred embodiment of the present application, the components include the following weight parts: 7-10 parts of sodium C14-16 olefin sulfonate, 2-4 parts of amino acid surfactant, 1-4 parts of alkyl glycoside surfactant, 0.4-1.2 parts of bio-based surfactant, 2-4 parts of amphoteric surfactant.

[0013] As a preferred embodiment of the present application, the components include the following weight parts: 8-9 parts of sodium C14-16 olefin sulfonate, 2.5-3 parts of amino acid surfactant, 2-3 parts of alkyl glycoside surfactant, 0.6-0.9 parts of bio-based surfactant, 2.5-3 parts of amphoteric surfactant.

[0014] As a preferred embodiment of the present application, the amino acid surfactant includes at least one of sodium lauroyl sarcosinate, sodium cocoyl glutamate, sodium lauroyl glutamate, disodium cocoyl glutamate, sodium cocoyl sarcosinate.

[0015] As a preferred embodiment of the present application, the alkyl glycoside surfactant includes at least one of octyl / decyl glucoside, decyl glucoside, cocoyl glucoside.

[0016] As a preferred embodiment of the present application, the amphoteric surfactant includes at least one of cocamidopropyl betaine, lauramidopropyl betaine, lauramidopropyl hydroxysultaine, cocamidopropyl hydroxysultaine.

[0017] As a preferred embodiment of the present application, the bio-based surfactant includes sophorolipid and soapberry extract, and the mass ratio of the sophorolipid to the soapberry extract is 1:(0.5-2).

[0018] The present application also provides a surfactant system comprising the surfactant composition described above.

[0019] As a preferred embodiment of the present application, the pH of the surfactant system is 5-6.

[0020] As a preferred embodiment of the present application, the mass percentage of the surfactant composition in the surfactant system is 7.6-29%; preferably 12.4-23.2%; more preferably 15.6-18.8%.

[0021] As a preferred embodiment of the present application, the components further include the following mass percentages: 1-5% sorbitol, 1-5% betaine, 0.01-0.1% chelating agent, 0.01-2% pH adjuster, 0.1-5% fruit acid, 0.1-0.5% preservative, 60-90% water.

[0022] As a preferred embodiment of the present application, at least one of the following (1)-(4) is satisfied:

[0023] (1) the chelating agent comprises at least one of disodium EDTA, glutamic acid diethylamine tetrasodium;

[0024] (2) the pH regulator comprises at least one of sodium hydroxide, triethanolamine;

[0025] (3) the fruit acid comprises at least one of alpha hydroxy acid, beta hydroxy acid, polyhydroxy acid;

[0026] (4) the preservative comprises at least one of phenoxyethanol, sodium benzoate, p-hydroxyacetophenone, 1,2-hexanediol, ethylhexylglycerin, 1,2-pentanediol.

[0027] The application also provides the use of the surfactant system in the preparation of cosmetics.

[0028] The application has the following beneficial effects: (1) the application combines the characteristics of sodium C14-16 olefin sulfonate, amino acid surfactant, alkyl glycoside surfactant, bio-based surfactant, and amphoteric surfactant. The amino acid surfactant has a long-chain hydrophobic group and an amino acid. This structure enables the amino acid surfactant to spontaneously separate to the interface of water and air in a solution, positions the hydrophilic group in the water phase, and points the hydrophobic group to the gas phase, effectively improving the foaming effect and washing effect of sodium C14-16 olefin sulfonate; the alkyl glycoside surfactant contains a glycoside ring and a fatty acid group in its molecular structure, significantly improves the bubble speed, improves the micellar structure formed by sodium C14-16 olefin sulfonate and amphoteric surfactant, reduces the low-temperature jelly feeling caused by too high micellar concentration, and at the same time, it can improve the stability of the foam and promote the formation of delicate and dense foam; the bio-based surfactant effectively combines with the amino acid on the interface of water and air, reduces the surface tension, and thus forms abundant and stable foam, can form a "colloid dispersion layer" on the surface of colloidal particles, thereby preventing the aggregation and deposition of particles, optimizes the viscosity and surface tension of the system, and significantly improves the stability of the system; the amphoteric surfactant cooperates with each raw material to improve the compatibility of the system and reduce the irritation. (2) the application utilizes the mutual molecular entanglement of each surfactant to interact, thereby showing excellent surface activity, and the prepared composition has extremely low surface tension and cmc value, the molecules in the surface adsorption layer are closely arranged to promote surface adsorption, effectively improves the foaming performance and foaming stability, has good stability in a wide pH (5-10) range, at the same time has excellent high and low temperature stability, and the surfactant composition has low irritation, is safe to use, and has a wide application prospect. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1The 30s foam amount of the surfactant composition of Example 4.

[0030] Figure 2 The 5min foam amount of the surfactant composition of Example 4. DETAILED DESCRIPTION

[0031] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0032] In the present application, the technical features described in an open way include both the closed technical solutions consisting of the listed features and the open technical solutions containing the listed features.

[0033] In the present application, if no special description is provided, the numerical range is regarded as continuous and includes the minimum value and the maximum value of the range and each value between the minimum value and the maximum value. Further, when a range is referred to as an integer, each integer between the minimum value and the maximum value of the range is included. In addition, when multiple ranges are provided to describe a feature or a property, the ranges can be combined. In other words, unless otherwise specified, all the ranges disclosed herein should be understood as including any and all sub-ranges falling within the range.

[0034] In the present application, the specific dispersion and stirring treatment methods are not particularly limited.

[0035] Unless otherwise specified, the component raw materials and instruments used in the embodiments and comparative examples of the present application are commercially available raw materials and instruments, and the component raw materials used in each parallel experiment are the same.

[0036] The sodium C14-16 olefin sulfonate is purchased from Guangdong Licheng Aowei Industry Co., Ltd., and the trade name is RSAW AOS35 / ZA.

[0037] The sodium fatty alcohol polyoxyethylene ether sulfate is purchased from Guangdong Licheng Aowei Industry Co., Ltd., and the trade name is RSAW ESB70 / ZA.

[0038] The sophorolipid is purchased from Kolmer (Guangzhou) Biotechnology Co., Ltd., and the trade name is BioloCare SLP.

[0039] The soapberry extract is purchased from Guangdong Jingqu Biotechnology Co., Ltd., and the trade name is Soapberry Extract.

[0040] Camellia seed cake extract was purchased from Guangdong Jingxu Biotechnology Co., Ltd., and the brand was Camellia seed cake extract C3;

[0041] Cocoyl glucoside was purchased from BASF (China) Co., Ltd., and the brand was Plantacare 818UP;

[0042] Cocamidopropyl betaine was purchased from Guangzhou Dongxiong Chemical Co., Ltd., and the brand was Betaine CAB-35;

[0043] Lauryl amine propionate sodium was purchased from Sanyo Chemical (Shanghai) Trading Co., Ltd., and the brand was AMC;

[0044] Mannosyl erythritol lipid was purchased from AS ASPECIALIST IN BIO-TECHNOLOGY, LABIO, and the brand was Ferment oil Camellia seed.

[0045] The remaining raw materials were all conventional commercially available cosmetic grades.

[0046] The surfactant composition provided by the embodiment of the present application comprises the following components in parts by weight: 5-11 parts of sodium C14-16 olefin sulfonate, 1-6 parts of amino acid surfactant, 0.5-5 parts of alkyl polyglycoside surfactant, 0.1-2 parts of bio-based surfactant, and 1-5 parts of amphoteric surfactant.

[0047] The bio-based surfactant comprises at least one of sophorolipid, rhamnolipid, soapberry extract, and Camellia seed cake extract.

[0048] The sodium C14-16 olefin sulfonate can reduce the surface tension of water from 72 mN / m to 30-40 mN / m within a certain range, and this property endows it with excellent detergency. The sodium C14-16 olefin sulfonate has good foaming property, hard water resistance, biodegradability, and wetting property, can quickly generate a large amount of foam, and this foam can clean the dirt and oil on the scalp and skin, and the double bond system in the molecular structure of the sodium C14-16 olefin sulfonate makes it perform more gently in terms of performance, so that it has lower irritation and good compatibility.

[0049] The amino acid surfactant is based on natural raw materials, has extremely mild performance, strong hard water resistance, is easily biodegradable, has good compatibility with the sodium C14-16 olefin sulfonate and the amphoteric surfactant, can enhance the foaming effect and washing effect of the sodium C14-16 olefin sulfonate, is stable to acid and alkali, effectively improves the amount of foam, and has strong detergency. It can significantly improve the softness, conditioning, and high-low temperature stability of washing products.

[0050] The alkyl glycoside surfactant has a glycoside ring and a fatty acid group in the molecular structure, has excellent dirt removal, foaming, stable foaming, emulsification, dispersion, solubilization, wetting, and penetration capacity. It is resistant to acid and alkali, not sensitive to electrolytes, has good compatibility with the skin, can reduce the irritation of other surfactants, and has no cloud point. The addition of the alkyl glycoside surfactant can significantly improve the foaming speed, improve the micellar structure formed by the C14-16 olefin sulfonate and the amphoteric surfactant, reduce the low-temperature jelly feeling caused by the high micellar concentration, and improve the stability of the foam and promote the formation of delicate and dense foam. It has good compatibility with C14-16 olefin sulfonate, amino acid surfactant, bio-based surfactant, and amphoteric surfactant.

[0051] The bio-based surfactant is an amphiphilic substance produced by microorganisms such as bacteria, yeast, and fungi during the metabolism process under specific culture conditions, using natural raw materials as substrates. Its advantages are high activity, good emulsification performance, complex spatial structure, low surface tension (most can be lower than 30 mN / m), high chemical stability and thermal stability. This kind of substance is environmentally friendly and biodegradable, and is mild and non-irritating. Formulation can be improved in mildness and reduced in irritation by combining with other traditional surfactants. The bio-based surfactants such as sophorose lipid, rhamnose lipid, soapberry extract, and oil tea dregs extract can effectively adsorb on the gas-liquid interface and reduce the surface tension in the system of the present application, thereby forming abundant and stable foam, forming a "colloidal dispersion layer" on the surface of colloidal particles, preventing the aggregation and deposition of particles, and optimizing the viscosity and surface tension of the system, thereby significantly improving the stability of the system.

[0052] The amphoteric surfactant has excellent stability under acidic and alkaline conditions, and exhibits anion and cation properties, respectively. In the formula system of the present application, the amphoteric surfactant has good compatibility with other surfactants. It has low irritation, is easily soluble in water, is stable to acid and alkali, has strong foaming and stable foaming, strong dirt removal, and excellent thickening, softness, bactericidal, antistatic, and hard water resistance. It can significantly improve the softness, conditioning, and high and low temperature stability of the washing product.

[0053] The application creatively combines the above various raw materials in a specific ratio, and combines the characteristics of C14-16 olefin sulfonate sodium, amino acid surfactant, alkyl glycoside surfactant, bio-based surfactant, and amphoteric surfactant. The amino acid surfactant has a long-chain hydrophobic group and an amino acid. This structure enables the amino acid surfactant to spontaneously separate to the interface of water and air in the solution, positions the hydrophilic group in the water phase, and the hydrophobic group points to the gas phase, effectively improving the foaming effect and washing effect of C14-16 olefin sulfonate sodium; the alkyl glycoside surfactant contains a glycoside ring and a fatty acid group in its molecular structure, significantly improves the foaming speed, improves the micellar structure formed by C14-16 olefin sulfonate sodium and amphoteric surfactant, reduces the low-temperature jelly feeling caused by too high micellar concentration, and improves the stability of the foam, and promotes the formation of delicate and dense foam; the bio-based surfactant effectively combines with the amino acid on the interface of water and air, reduces the surface tension, and thus forms abundant and stable foam, can form a "colloid dispersion layer" on the surface of colloidal particles, thereby preventing the aggregation and deposition of particles, optimizing the viscosity and surface tension of the system, and significantly improving the stability of the system; the amphoteric surfactant cooperates with each raw material to improve the compatibility of the system and reduce irritation; the application utilizes the molecular entanglement of each surfactant to interact with each other, thereby exhibiting excellent surface activity, and the prepared composition has extremely low surface tension and cmc value, the surface adsorption layer molecules are closely arranged to promote surface adsorption, effectively improves the foaming performance and foaming stability, has good stability in a wide pH (5-10) range, and has excellent high and low temperature stability, and the surfactant composition has low irritation, is safe to use, and has a wide application prospect.

[0054] The inventors of the application found that by controlling the amount of each raw material within the range of the application, the compatibility is good, the viscosity is moderate, the dispersibility and stability of each raw material are excellent, the foaming performance and foaming stability are effectively improved, and the system has good stability in a wide pH (5-10) range; when the amount of each raw material is not within the range of the application, either the foaming performance and foaming stability are insufficient, or the high and low temperature stability is insufficient, more specifically, when the amount of each raw material is lower than the range of the application, the foaming performance and foaming stability are insufficient, and when the amount of each raw material is higher than the range of the application, the high and low temperature stability is insufficient.

[0055] The amount of C14-16 olefin sulfonate sodium is 5-11 parts, for example, it can be 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, 10 parts, 11 parts, or a range formed by any two of the above values.

[0056] The amount of the amino acid surfactant is 1-6 parts, for example, 1 part, 2 parts, 3 parts, 4 parts, 5 parts, 6 parts, or a range defined by any two of the values.

[0057] The amount of the alkyl glycoside surfactant is 0.5-5 parts, for example, 0.5 parts, 1 part, 2 parts, 3 parts, 4 parts, 5 parts, or a range defined by any two of the values.

[0058] The amount of the bio-based surfactant is 0.1-2 parts, for example, 0.1 parts, 0.2 parts, 0.4 parts, 0.5 parts, 0.6 parts, 0.8 parts, 1 part, 1.2 parts, 1.5 parts, 1.8 parts, 2 parts, or a range defined by any two of the values.

[0059] The amount of the amphoteric surfactant is 1-5 parts, for example, 1 part, 2 parts, 3 parts, 4 parts, 5 parts, or a range defined by any two of the values.

[0060] In one embodiment, the components include 7-10 parts of sodium C14-16 olefin sulfonate, 2-4 parts of amino acid surfactant, 1-4 parts of alkyl glycoside surfactant, 0.4-1.2 parts of bio-based surfactant, and 2-4 parts of amphoteric surfactant. When the amounts of the raw materials are within the ranges, the compatibility between the raw materials is good, the surface tension can be more effectively reduced, a more compact surface adsorption layer molecular structure can be formed, the foaming performance and foaming stability can be further improved, and excellent high and low temperature stability is achieved.

[0061] In one embodiment, the components include 8-9 parts of sodium C14-16 olefin sulfonate, 2.5-3 parts of amino acid surfactant, 2-3 parts of alkyl glycoside surfactant, 0.6-0.9 parts of bio-based surfactant, and 2.5-3 parts of amphoteric surfactant. When the amounts of the raw materials are within the ranges, the foaming performance and foaming stability can be more effectively improved, and excellent high and low temperature stability is achieved.

[0062] In one of the embodiments, the amino acid surfactant includes at least one of sodium lauroyl amino acid, sodium cocoyl glutamate, sodium lauroyl glutamate, disodium cocoyl glutamate, sodium cocoyl amino acid; especially when this kind of amino acid surfactant is used, the compatibility with sodium C14-16 olefin sulfonate and amphoteric surfactant is better, and it can spontaneously separate to the interface of water and air, position the hydrophilic group in the water phase, and the hydrophobic group points to the gas phase, effectively improving the foaming effect and washing effect of sodium C14-16 olefin sulfonate, further improving the foaming performance and foaming stability, and it is also stable to heat, acid and alkali, and the stability is further improved, especially in a weak acid environment, the foaming performance is further improved.

[0063] In one of the embodiments, the alkyl glycoside surfactant includes at least one of octyl / decyl glucoside, decyl glucoside, and cocoyl glucoside; especially when this kind of alkyl glycoside surfactant is used, the molecular structure contains glycoside ring and fatty acid group, and the hydrophilic and lipophilic parts in the molecular structure are connected by a particularly stable glycoside ether bond, which can remain stable in a strong acid or strong alkali environment, effectively improving the micellar structure formed by sodium C14-16 olefin sulfonate and amphoteric surfactant, improving the stability of the foam, and promoting the formation of delicate and dense foam.

[0064] In one of the embodiments, the amphoteric surfactant includes at least one of cocamidopropyl betaine, lauramidopropyl betaine, lauramidopropyl hydroxysultaine, and cocamidopropyl hydroxysultaine; especially when this kind of amphoteric surfactant is used, it has the dual functions of increasing viscosity and thickening and reducing surface tension, which can effectively improve the compatibility of the system, reduce irritation, and have a strong synergistic effect with sodium C14-16 olefin sulfonate, and the strong electrostatic adsorption effect leads to the neutralization of the electric part in the adsorption layer, weakens the electrostatic repulsion between ions of the same charge in the surface adsorption layer, and greatly reduces the surface tension.

[0065] In one of the embodiments, the bio-based surfactant includes sophorolipid and soapberry extract, and the mass ratio of the sophorolipid to the soapberry extract is 1:(0.5-2).

[0066] The sophorolipid has excellent chemical stability and thermal stability, can effectively reduce the surface tension, promote the formation of foam, improve the solubility of the formula system, and keep the emulsifying ability and the property of reducing surface tension almost unchanged at high temperature, which can effectively improve the high and low temperature stability of the system and the synergistic effect of the formula system.

[0067] The soapberry extract has excellent stability and mildness. The critical micelle concentration of the soapberry surface active substance in deionized water is low, and the surface activity is very strong. The soapberry extract is little affected by temperature, pH and water hardness within a certain range, showing good stability. This stability enables the soapberry extract to maintain the stability of its active ingredients when preparing washing and caring products, and is not easily affected by external environmental factors. The soapberry extract has excellent detergency and weak ability to clean sebum, can reduce sebum loss, protect the skin barrier, and bring good experience of non-dry and non-tight skin after washing. The soapberry extract can be used in combination with other surfactants to improve the hardness, stability and durability of foam.

[0068] The application creatively uses sophorolipid and soapberry extract with a mass ratio of 1:(0.5-2) as a bio-based surfactant. When the two are combined, the high and low temperature stability of the system is significantly improved, effectively adsorbs on the gas-liquid interface and reduces the surface tension, thereby forming abundant and stable foam, and forming a "colloid dispersion layer" on the surface of colloidal particles, thereby preventing the aggregation and deposition of particles, improving the foaming performance, and promoting the formation of abundant and stable foam.

[0069] The application further provides a surfactant system comprising the surfactant composition.

[0070] In one embodiment, the pH of the surfactant system is 5-6.

[0071] In one embodiment, the mass percentage of the surfactant composition in the surfactant system is 7.6-29%; preferably 12.4-23.2%; more preferably 15.6-18.8%.

[0072] In one embodiment, it further comprises the following components with the following mass percentages: 1-5% sorbitol, 1-5% betaine, 0.01-0.1% chelating agent, 0.01-2% pH regulator, 0.1-5% fruit acid, 0.1-0.5% preservative, and 60-90% water.

[0073] In one embodiment, at least one of the following (1)-(4) is satisfied:

[0074] (1) The chelating agent comprises at least one of disodium EDTA, tetrasodium glutamate diethylamine;

[0075] (2) The pH regulator comprises at least one of sodium hydroxide and triethanolamine;

[0076] (3) The fruit acid comprises at least one of alpha-hydroxy acid, beta-hydroxy acid and polyhydroxy acid;

[0077] (4) the preservative comprises at least one of phenoxyethanol, sodium benzoate, p-hydroxyacetophenone, 1,2-hexanediol, ethylhexylglycerin, 1,2-pentanediol.

[0078] In one embodiment, the a-hydroxy acid comprises at least one of glycolic acid, lactic acid, citric acid, mandelic acid.

[0079] In one embodiment, the b-hydroxy acid comprises gluconolactone.

[0080] In one embodiment, the polyhydroxy acid comprises at least one of lactobionic acid, succinic acid.

[0081] It should be noted that the present application is not limited to the preparation method of the weakly acidic surfactant system, and those skilled in the art can prepare the weakly acidic surfactant system according to the formula of the weakly acidic surfactant system of the present application according to the conventional method in the art.

[0082] For example, the preparation method of the weakly acidic surfactant system is as follows: each raw material is weighed according to the ratio, sodium C14-16 olefin sulfonate, amino acid surfactant, alkyl polyglycoside surfactant, amphoteric surfactant, chelating agent, sorbitol, betaine are added to water, heated to 80-85°C, stirred uniformly at a speed of 200-1000 rpm, cooled to 60-70°C, pH regulator is added, stirred uniformly at a speed of 200-1000 rpm, cooled to 40-48°C, and then bio-based surfactant, a-hydroxy acid, preservative are added, stirred uniformly at a speed of 200-1000 rpm, to obtain a surfactant system.

[0083] In one embodiment, the surfactant composition further comprises a cosmetically acceptable adjuvant.

[0084] In one embodiment, the cosmetically acceptable adjuvant comprises at least one of, but is not limited to, a humectant, an emollient, an emulsifier, an antioxidant, a penetration enhancer, a fragrance, a pigment.

[0085] In one embodiment, the suitable humectant comprises at least one of, but is not limited to, glycerin, sodium hyaluronate, panthenol, hydroxyethyl urea, polyethylene glycol, xylitol, maltose, sodium polyglutamate, erythritol, mannitol, glucose, lactose, inositol, trehalose, hydrogenated starch hydrolysate.

[0086] In an embodiment, suitable emollients include, but are not limited to, isododecane, isohexadecane, caprylic / capric triglyceride, pentaerythrityl tetraisostearate, dimethicone, isononyl isononanoate, diisostearyl malate, phytosteryl australien nut oil acid ester, squalane, hexyl laurate, castor oil, hydrogenated polyisobutene, octyldodecanol, shea butter, dicaprylyl carbonate, jojoba oil, lanolin, prunus amygdalus dulcis oil, dicapryl adipate, at least one of cocoyl octanoate / caprate.

[0087] In an embodiment, suitable emulsifiers include, but are not limited to, glyceryl stearate, polyglyceryl-10 stearate, polyglyceryl-10 laurate, polyglyceryl-10 myristate, polyglyceryl-5 trioleate, PEG-40 hydrogenated castor oil, PEG-60 hydrogenated castor oil, PPG-13-decyltetradecineth-24, sodium stearoyl glutamate, steareth-2, steareth-21, hydrogenated lecithin, at least one of.

[0088] In an embodiment, suitable antioxidants include, but are not limited to, carotenoids, ascorbic acid and its derivatives, resveratrol, pentaerythrityl tetra-di-t-butyl hydroxyhydrocinnamate, arbutin, tocopherol (vitamin E), sodium metabisulfite, and combinations thereof.

[0089] In an embodiment, suitable colorants include, but are not limited to, white, black, yellow, blue, green, pink, red, orange, purple, indigo, brown, and the like, and combinations thereof.

[0090] The present application also provides use of the surfactant system in the preparation of a cosmetic product.

[0091] In an embodiment, the cosmetic product is a body wash, a shampoo, or a scrub.

[0092] The following examples are provided to facilitate an understanding of the present application. The examples are provided without admitting that the examples are prior art, or that the examples are the only examples that would be useful in understanding the present application.

[0093] Examples 1-15, Comparative Examples 1-10

[0094] The formulations of Examples 1-15 are shown in Table 1 (all in parts by weight).

[0095] The formulations of Comparative Examples 1-10 are shown in Table 2 (all in parts by weight).

[0096] Table 1

[0097]

[0098]

[0099] Table 2

[0100]

[0101] The preparation method of the surfactant system of Examples 1-6, Examples 9-12, and Comparative Examples 1-2 all include the following steps: according to the ratio, weigh each raw material, add sodium C14-16 olefin sulfonate, sodium lauroyl sarcosinate, octyl / decyl glucoside, cocamidopropyl betaine, disodium EDTA, sorbitol, and betaine into water, heat to 82°C, stir uniformly at a speed of 500 rpm, cool to 65°C, add sodium hydroxide, stir uniformly at a speed of 500 rpm, cool to 45°C, then add sophorolipid, soapberry extract, lactic acid, and phenoxyethanol, stir uniformly at a speed of 500 rpm, to obtain the surfactant system.

[0102] The preparation method of the surfactant system of Example 7 includes the following steps: according to the ratio, weigh each raw material, add sodium C14-16 olefin sulfonate, sodium cocoyl glutamate, octyl / decyl glucoside, cocamidopropyl betaine, disodium EDTA, sorbitol, and betaine into water, heat to 82°C, stir uniformly at a speed of 500 rpm, cool to 65°C, add sodium hydroxide, stir uniformly at a speed of 500 rpm, cool to 45°C, then add sophorolipid, soapberry extract, lactic acid, and phenoxyethanol, stir uniformly at a speed of 500 rpm, to obtain the surfactant system.

[0103] The preparation method of the surfactant system of Example 8 includes the following steps: according to the ratio, weigh each raw material, add sodium C14-16 olefin sulfonate, sodium lauroyl sarcosinate, cocoglycoside, cocamidopropyl betaine, disodium EDTA, sorbitol, and betaine into water, heat to 82°C, stir uniformly at a speed of 500 rpm, cool to 65°C, add sodium hydroxide, stir uniformly at a speed of 500 rpm, cool to 45°C, then add sophorolipid, soapberry extract, lactic acid, and phenoxyethanol, stir uniformly at a speed of 500 rpm, to obtain the surfactant system.

[0104] The preparation method of the surfactant system of Example 13 includes the following steps: according to the ratio, weigh each raw material, add sodium C14-16 olefin sulfonate, sodium lauroyl sarcosinate, octyl / decyl glucoside, cocamidopropyl betaine, disodium EDTA, sorbitol, and betaine into water, heat to 82°C, stir uniformly at a speed of 500 rpm, cool to 65°C, add sodium hydroxide, stir uniformly at a speed of 500 rpm, cool to 45°C, then add sophorolipid, lactic acid, and phenoxyethanol, stir uniformly at a speed of 500 rpm, to obtain the surfactant system.

[0105] The preparation method of the surfactant system of Example 14 comprises the following steps: weighing each raw material according to the ratio, adding sodium C14-16 olefin sulfonate, sodium lauroyl methyl amino acid, octyl / decyl glucoside, cocamidopropyl betaine, disodium EDTA, sorbitol, betaine into water, heating to 82°C, stirring uniformly at a speed of 500 rpm, cooling to 65°C, adding sodium hydroxide, stirring uniformly at a speed of 500 rpm, cooling to 45°C, then adding soapberry extract, lactic acid, phenoxy ethanol, stirring uniformly at a speed of 500 rpm to obtain the surfactant system.

[0106] The preparation method of the surfactant system of Example 15 comprises the following steps: weighing each raw material according to the ratio, adding sodium C14-16 olefin sulfonate, sodium lauroyl methyl amino acid, octyl / decyl glucoside, cocamidopropyl betaine, disodium EDTA, sorbitol, betaine into water, heating to 82°C, stirring uniformly at a speed of 500 rpm, cooling to 65°C, adding sodium hydroxide, stirring uniformly at a speed of 500 rpm, cooling to 45°C, then adding oil tea dregs extract, lactic acid, phenoxy ethanol, stirring uniformly at a speed of 500 rpm to obtain the surfactant system.

[0107] The preparation method of the surfactant system of Comparative Examples 3-4 comprises the following steps: weighing each raw material according to the ratio, adding sodium C14-16 olefin sulfonate, sodium lauroyl methyl amino acid, octyl / decyl glucoside, cocamidopropyl betaine, disodium EDTA, sorbitol, betaine into water, heating to 82°C, stirring uniformly at a speed of 500 rpm, cooling to 65°C, adding sodium hydroxide, stirring uniformly at a speed of 500 rpm, cooling to 45°C, then adding lactic acid, phenoxy ethanol, stirring uniformly at a speed of 500 rpm to obtain the surfactant system.

[0108] The preparation method of the surfactant system of Comparative Example 5 comprises the following steps: weighing each raw material according to the ratio, adding sodium C14-16 olefin sulfonate, sodium lauroyl methyl amino acid, octyl / decyl glucoside, cocamidopropyl betaine, disodium EDTA, sorbitol, betaine into water, heating to 82°C, stirring uniformly at a speed of 500 rpm, cooling to 65°C, adding sodium hydroxide, stirring uniformly at a speed of 500 rpm, cooling to 45°C, then adding mannose erythritol lipid, lactic acid, phenoxy ethanol, stirring uniformly at a speed of 500 rpm to obtain the surfactant system.

[0109] The preparation method of the surfactant system of Comparative Example 6 comprises the following steps: each raw material is weighed according to the proportion, sodium C14-16 olefin sulfonate, sodium lauroyl methyl amino acid, cocamidopropyl betaine, disodium EDTA, sorbitol, betaine are added into water, heated to 82°C, stirred uniformly at a speed of 500 rpm, cooled to 65°C, sodium hydroxide is added, stirred uniformly at a speed of 500 rpm, cooled to 45°C, sophorolipid, soapberry extract, lactic acid, phenoxy ethanol are added, stirred uniformly at a speed of 500 rpm, and the surfactant system is obtained.

[0110] The preparation method of the surfactant system of Comparative Example 7 comprises the following steps: each raw material is weighed according to the proportion, sodium C14-16 olefin sulfonate, sodium lauroyl methyl amino acid, octyl / decyl glucoside, disodium EDTA, sorbitol, betaine are added into water, heated to 82°C, stirred uniformly at a speed of 500 rpm, cooled to 65°C, sodium hydroxide is added, stirred uniformly at a speed of 500 rpm, cooled to 45°C, sophorolipid, soapberry extract, lactic acid, phenoxy ethanol are added, stirred uniformly at a speed of 500 rpm, and the surfactant system is obtained.

[0111] The preparation method of the surfactant system of Comparative Example 8 comprises the following steps: each raw material is weighed according to the proportion, sodium C14-16 olefin sulfonate, sodium lauroyl methyl amino acid, octyl / decyl glucoside, sodium laurylamine propionate, disodium EDTA, sorbitol, betaine are added into water, heated to 82°C, stirred uniformly at a speed of 500 rpm, cooled to 65°C, sodium hydroxide is added, stirred uniformly at a speed of 500 rpm, cooled to 45°C, sophorolipid, soapberry extract, lactic acid, phenoxy ethanol are added, stirred uniformly at a speed of 500 rpm, and the surfactant system is obtained.

[0112] The preparation method of the surfactant system of Comparative Example 9 comprises the following steps: each raw material is weighed according to the proportion, sodium fatty alcohol polyoxyethylene ether sulfate, sodium lauroyl methyl amino acid, octyl / decyl glucoside, cocamidopropyl betaine, disodium EDTA, sorbitol, betaine are added into water, heated to 82°C, stirred uniformly at a speed of 500 rpm, cooled to 65°C, sodium hydroxide is added, stirred uniformly at a speed of 500 rpm, cooled to 45°C, sophorolipid, soapberry extract, lactic acid, phenoxy ethanol are added, stirred uniformly at a speed of 500 rpm, and the surfactant system is obtained.

[0113] The preparation method of the surfactant system of Comparative Example 10 comprises the following steps: weighing each raw material according to the ratio, adding sodium C14-16 olefin sulfonate, sodium dodecyl sulfate, octyl / decyl glucoside, cocamidopropyl betaine, disodium EDTA, sorbitol, betaine into water, heating to 82°C, stirring uniformly at a speed of 500 rpm, cooling to 65°C, adding sodium hydroxide, stirring uniformly at a speed of 500 rpm, cooling to 45°C, and then adding sophorolipid, soapberry extract, lactic acid, and phenoxyethanol, stirring uniformly at a speed of 500 rpm, to obtain the surfactant system.

[0114] Test Example 1

[0115] Foam volume and foam stability

[0116] Experimental instrument: commissioned by Nanjing Huashil New Material Co., Ltd. (SINOLION) Application Technology Department for testing, simple rotary foam instrument (non-standard).

[0117] Experimental basis: reference to the “Simple Rotary Foam Test Procedure for Surfactants and Detergents” document number: HS-YY-AW-20231101, five groups are tested for each example and comparative example, and the average value is taken.

[0118] Experimental steps:

[0119] 1: precisely weigh 5g of the sample to be tested;

[0120] 2: dilute the sample in a 500ml volumetric flask with deionized water and make up to 500ml;

[0121] 3: place the test dilution in the volumetric flask in a 40°C water bath for 20min;

[0122] 4: use 50ml of the test dilution to rinse the test cylinder of the simple rotary foam instrument twice:

[0123] 5: accurately measure 200ml of the test dilution into the cylinder of the simple rotary foam instrument using a 500ml cylinder, and lock the cylinder fastener;

[0124] 6: set the rotary foam instrument to rotate forward at a speed of 20r / min, rotate for 1min, press the stop button to stop the simple rotary foam instrument, and start timing;

[0125] 7: read the 30s, 5min simple rotary foam instrument upper foam and liquid total volume values and lower liquid volume values.

[0126] 8: subtract the liquid volume value from the total volume value to obtain the rotary foam volume of the sample to be tested at 30s, 5min.

[0127] Foam change rate (foam stability) = [(final foam volume - 30s foam volume) / 30s foam volume] x 100%.

[0128] wherein the 30s foam volume and the 5min foam volume of Example 4 are respectively as shown in Figure 1 and Figure 2 .

[0129] Table 3

[0130]

[0131]

[0132] As can be seen from Table 3, the surface active composition described in the application has excellent foaming performance and foam stability.

[0133] As can be seen from Comparative Examples 1, 2, 5, 6, by controlling the amount of the surface active agent composition to be: 7-10 parts of sodium C14-16 olefin sulfonate, 2-4 parts of amino acid surfactant, 1-4 parts of alkyl glycoside surfactant, 0.4-1.2 parts of bio-based surfactant, 2-4 parts of amphoteric surfactant, the compatibility of each raw material is better, which can better reduce the surface tension, form more stable micelles, and further improve the foaming performance and foam stability.

[0134] As can be seen from Comparative Examples 1-6, by controlling the amount of the surface active agent composition to be: 8-9 parts of sodium C14-16 olefin sulfonate, 2.5-3 parts of amino acid surfactant, 2-3 parts of alkyl glycoside surfactant, 0.6-0.9 parts of bio-based surfactant, 2.5-3 parts of amphoteric surfactant, the foaming performance and foam stability are further improved.

[0135] As can be seen from Comparative Example 4 and Examples 9-15, by using sophorolipid and soapberry extract with a mass ratio of 1:(0.5-2) as bio-based surfactant, the micelle structure formed is effectively improved, and the foaming performance and foam stability are further improved.

[0136] As can be seen from Comparative Example 4 and Comparative Examples 1-2, by controlling the amount of the surface active agent to be: 5-11 parts of sodium C14-16 olefin sulfonate, 1-6 parts of amino acid surfactant, 0.5-5 parts of alkyl glycoside surfactant, 0.2-2 parts of bio-based surfactant, 1-5 parts of amphoteric surfactant, the foaming performance and foam stability are effectively improved.

[0137] As can be seen from Comparative Example 4 and Comparative Examples 3-5, the foaming performance and foaming stability are significantly improved by using sophorolipid and soapberry extract as bio-based surfactants in a mass ratio of 1:(0.5-2), and the foaming performance and foaming stability will be significantly reduced if no bio-based surfactant is added or other bio-based surfactants are used to replace.

[0138] As can be seen from the comparison of Comparative Example 4 and Comparative Examples 3-10, the C14-16 olefin sulfonic acid sodium, amino acid surfactant, alkyl glycoside surfactant, bio-based surfactant, and amphoteric surfactant have a significant synergistic effect, and under the combined action of the C14-16 olefin sulfonic acid sodium, amino acid surfactant, alkyl glycoside surfactant, bio-based surfactant, and amphoteric surfactant, the surface tension is better reduced, a more stable micelle is formed, and the foaming performance and foam stability are further improved. When one of the components is missing or other surfactants are used to replace, the foaming performance and foaming stability will be significantly reduced.

[0139] Test Example 3

[0140] Stability test:

[0141] The compositions prepared in the examples and comparative examples were used as test samples, 8 samples of 25 g each were weighed into transparent PET bottles, and were placed at-18℃, -8℃, 5℃, 25℃, 40℃, 45℃, 50℃, and in a cycle of-8℃ to 40℃, 2 days for one cycle, for 90 days. After recovery to room temperature, the stability was observed, and the test results are shown in the following table. The stability judgment standard is that the test sample has no delamination and oil separation, and the transparency does not change after recovery to room temperature, which is normal, otherwise it is abnormal.

[0142] Table 4

[0143]

[0144] Table 5

[0145]

[0146]

[0147] As can be seen from Table 4, the penetration-promoting composition has excellent stability.

[0148] In Comparative Example 2, the amount of surfactant is too high, resulting in too high viscosity and reduced stability.

[0149] In Comparative Examples 3-4, no bio-based surfactant is contained, resulting in insufficient high-temperature stability and failing to pass the stability test.

[0150] In which the comparative example 9 uses other surfactants to replace C14-16 olefin sulfonate sodium, resulting in the compatibility of the application being destroyed, the high temperature and low temperature stability is insufficient, and it cannot pass the stability test.

[0151] Test example 4

[0152] Chicken embryo chorioallantoic membrane vascular stimulation test (referring to SNT 2329-2009 cosmetic eye irritation and corrosion chicken embryo chorioallantoic membrane test).

[0153] (1) Purchase 0d age chicken embryos, incubate to 9d age, check and discard defective chicken embryos. Mark the air chamber position on the surface of the normal chicken eggshell, peel off part of the eggshell, expose the white egg membrane; carefully remove the inner membrane with tweezers, ensure that the vascular membrane is not damaged;

[0154] (2) At least 6 chicken embryos per group, take 0.3mL of the test substance as is, dilute 20%, and directly drop on the CAM surface, observe the CAM reaction, and record the time of each toxic effect within 5min, accurate to seconds, including 3 reactions of bleeding, coagulation and vascular melting, and record the degree of reaction;

[0155] (3) The time of each detection endpoint and the degree of reaction are recorded using the irritation score (IS), and the irritation score (IS) is calculated using the following formula, and the result is rounded to two decimal places. The calculation formula is as follows:

[0156]

[0157] In which sec H, sec L and sec C represent the average time (seconds) of the CAM membrane observed to start bleeding, vascular melting and coagulation, respectively, and the scoring standard and test results are shown in Table 6, Table 7.

[0158] Table 6

[0159] Irritation score Irritation classification IS < 1 Non-irritating 1 < IS < 5 Mildly irritating 5 < IS < 9 Moderately irritating IS > 10 Strongly irritating / corrosive

[0160] Table 7

[0161]

[0162]

[0163] As can be seen from Table 7, the surfactant composition described in the application is mild and non-irritating.

[0164] In which, the amount of surfactant in comparative example 2 is too high, especially the amount of C14-16 olefin sulfonate sodium, which leads to increased irritation.

[0165] Wherein, the comparative example 3-4 did not add the bio-based surfactant, leading to the significant increase of the irritation, especially the comparative example 3, using the sodium C14-16 olefin sulfonate to replace the bio-based surfactant, leading to the increase of the irritation.

[0166] Wherein, the comparative example 5 used other surfactants to replace the bio-based surfactant, leading to the increase of the irritation.

[0167] Wherein, the comparative example 6-7 used too much sodium C14-16 olefin sulfonate, leading to the increase of the irritation.

[0168] Wherein, the comparative example 8 used other surfactants to replace the cocamidopropyl betaine, leading to the increase of the irritation.

[0169] Wherein, the comparative example 10 used other surfactants to replace the amino acid surfactant, leading to the increase of the irritation.

[0170] Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present application, rather than limit the scope of protection of the present application. Although the present application 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 application can be modified or replaced by equivalents without departing from the essence and scope of the technical solutions of the present application.

Claims

1. A surfactant composition, characterized in that, It consists of the following components by weight: 8-9 parts sodium C14-16 olefin sulfonate, 2.5-3 parts amino acid surfactant, 2-3 parts alkyl glycoside surfactant, 0.6-0.9 parts bio-based surfactant, and 2.5-3 parts amphoteric surfactant; The bio-based surfactant is composed of sophorolipid and Sapindus mukorossi extract, wherein the mass ratio of sophorolipid to Sapindus mukorossi extract is 1:(0.5~2). The amino acid surfactant is at least one of sodium lauroyl sarcosinate, sodium cocoyl glutamate, sodium lauroyl glutamate, disodium cocoyl glutamate, and sodium cocoyl sarcosinate. The alkyl glycoside surfactant is at least one of octyl / decyl glucoside, decyl glucoside, and cocoyl glucoside; The amphoteric surfactant is at least one of cocamidopropyl betaine, lauramidopropyl betaine, lauramidopropyl hydroxysulfonyl betaine, and cocamidopropyl hydroxysulfonyl betaine.

2. A surfactant system, characterized in that, The surfactant composition comprising claim 1, wherein the pH of the surfactant system is 5-6.

3. The surfactant system according to claim 2, characterized in that, The surfactant composition has a mass percentage content of 7.6-29% in the surfactant system.

4. The surfactant system according to claim 3, characterized in that, The surfactant composition has a mass percentage content of 12.4-23.2% in the surfactant system.

5. The surfactant system according to claim 3, characterized in that, The surfactant composition has a mass percentage content of 15.6-18.8% in the surfactant system.

6. The surfactant system according to claim 4, characterized in that, It also includes the following components by weight percentage: 1-5% sorbitol, 1-5% betaine, 0.01-0.1% chelating agent, 0.01-2% pH adjuster, 0.1-5% fruit acid, 0.1-0.5% preservative, and 60-90% water.

7. The surfactant system according to claim 6, characterized in that, Satisfy at least one of the following (1) to (4): (1) The chelating agent includes at least one of disodium EDTA and tetrasodium diethylamine glutamate; (2) The pH adjuster includes at least one of sodium hydroxide and triethanolamine; (3) The fruit acid includes at least one of α-hydroxy acid, β-hydroxy acid, and polyhydroxy acid; (4) The preservatives include at least one of phenoxyethanol, sodium benzoate, p-hydroxyacetophenone, 1,2-hexanediol, ethylhexylglycerin, and 1,2-pentanediol.

8. The use of the surfactant system according to any one of claims 2 to 7 in the preparation of cosmetics.

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