A green gel composition

Abstract

Disclosed is a green gel composition comprising (a) a salt of an N-long chain acyl amino acid, (b) a free N-long chain acyl amino acid, (c) a hydrophilic nonionic surfactant, (d) an alkyl glycoside, wherein the (c) hydrophilic nonionic surfactant comprises a polyglyceryl fatty acid ester. The related green gel composition can be used for preparing personal care products, household cleaning products, industrial cleaning products.

Description

Technical Field

[0001] This invention relates to the field of gel product technology, and particularly to green gel compositions and their applications in personal care products, household cleaning products, and industrial cleaning products. Background Technology

[0002] Gel-type products are widely used in cosmetics, detergents, toothpastes, and other fields due to their clear / transparent / semi-transparent appearance, unique rheological properties that allow them to suspend small particles, their aesthetic appeal, non-greasy feel, ease of application, and ease of cleaning.

[0003] The team of this invention utilizes the self-thickening properties of N-long-chain acyl amino acids and bases (such as basic amino acids / inorganic bases) to form gels without the need to add various polymer thickeners or gelling agents. The relevant content is disclosed in WO2024078286A1 and CN117883307A.

[0004] However, the formation of gels through self-thickening of N-long-chain acyl amino acids and basic amino acids / inorganic bases requires a total weight percentage of over 30 wt% for these components, resulting in higher costs. Furthermore, considering that the usage limits for some N-long-chain acyl amino acids in cosmetics are below 20 wt%, this significantly restricts the practical application of high-content N-long-chain acyl amino acid solutions.

[0005] The inventors then developed a gel composition based on PEG-150 pentaerythritol tetrafatty acid ester, the gel composition comprising (a) a salt of N-long-chain acyl amino acid, (b) free N-long-chain acyl amino acid, (c) a hydrophilic nonionic surfactant, and (d) an amphoteric surfactant.

[0006] Considering that the natural source index of the amphoteric surfactant betaine is below 0.8, the inventors proposed a technical solution to omit betaine, which helps to increase the natural source content of the formulation to some extent. However, none of the aforementioned studies removed PEG-150 pentaerythritol tetrafatty acid ester. PEG-150 pentaerythritol tetrafatty acid ester is not a raw material with a natural source index of 1, and there is still room for improvement.

[0007] Currently, with the increasing global awareness of environmental protection and the growing emphasis on sustainable development, the daily chemical industry is gradually transforming towards green manufacturing, and the greening of raw materials is a crucial part of this process. Daily chemical companies are increasingly adopting renewable raw materials, such as plant extracts, marine biological resources, and naturally derived ingredients, to replace traditional chemical raw materials.

[0008] The International Organization for Standardization (ISO) published standards ISO 16128-1 in February 2016 and ISO 16128-2 in September 2017. ISO 16128 establishes the basic definitions of natural and organic cosmetics. T / SHRH 041-2022, "Technical Definition and Calculation Guidelines for Natural Ingredients in Cosmetics," published by the Shanghai Daily Chemical Industry Association on May 30, 2022, can be seen as the domestic implementation of ISO 16128.

[0009] This invention aims to further increase the natural source content of products and create green gel products. Summary of the Invention

[0010] Specifically, the present invention provides the following technical solution.

[0011] The present invention provides a green gel composition comprising (a) a salt of N-long-chain acyl amino acid, (b) free N-long-chain acyl amino acid, (c) a hydrophilic nonionic surfactant, and (d) an alkyl glycoside.

[0012] Alternatively, the green gel composition comprises (a') an N-long-chain acyl amino acid partially neutralized with an alkali, (c) a hydrophilic nonionic surfactant, and (d) an alkyl glycoside. Wherein, (a') the N-long-chain acyl amino acid partially neutralized with an alkali refers to the product of the alkali-neutralized N-long-chain acyl amino acid, the final product present in the composition being both the salt of the N-long-chain acyl amino acid and the unneutralized free N-long-chain acyl amino acid.

[0013] Alternatively, the green gel composition comprises (a'') a base and an N-long-chain acyl amino acid, wherein the molar number of the base is less than that of the N-long-chain acyl amino acid, such that the neutralization degree of the N-long-chain acyl amino acid is less than 100%, (c) a hydrophilic nonionic surfactant, and (d) an alkyl glycoside. Although the base and the N-long-chain acyl amino acid are added to the formulation separately, they will inevitably react. Since the neutralization degree is less than 100%, what ultimately exists in the composition is the salt of the N-long-chain acyl amino acid and unneutralized free N-long-chain acyl amino acid.

[0014] The components (a)+(b), (a'), or (a'') in the green gel composition comprise a weight percentage of 20 wt% or more. Components (a)+(b), (a'), or (a'') are essentially combinations of salts of N-long-chain acyl amino acids and unneutralized free N-long-chain acyl amino acids. If the amount of components (a)+(b), (a'), or (a'') is less than 20 wt%, gel formation is not recommended.

[0015] The free N-long-chain acyl amino acids mentioned in this invention refer to N-long-chain acyl amino acids that have not been neutralized by alkali and exist in the formulation system in acid form.

[0016] For N-long-chain acyl amino acids, a natural source index greater than 0.5 and less than or equal to 1 indicates a green component. The N-long-chain acyl group in the N-long-chain acyl amino acid originates from saturated or unsaturated straight-chain or branched fatty acids with 8 to 22 carbon atoms. Further, the N-long-chain acyl group in the N-long-chain acyl amino acid is selected from one or more of octanoyl, decanoyl, undecanoyl, lauroyl, myristoyl, pentadecanoyl, palmitoyl, stearoyl, oleoyl, linoleoyl, isostearoyl, coconut oil fatty acyl, and palm oil fatty acyl, preferably coconut oil fatty acyl or lauroyl, with lauroyl being the most preferred.

[0017] The amino acids in the N-long-chain acyl amino acids are derived from one or more of glycine, alanine, glutamic acid, sarcosine, aspartic acid, leucine, isoleucine, valine, threonine, proline, phenylalanine, arginine, lysine, and (methyl)taurine. Further, the amino acids in the N-long-chain acyl amino acids are derived from one or more of alanine, glycine, glutamic acid, sarcosine, arginine, lysine, and (methyl)taurine, preferably alanine, and most preferably L-alanine. The N-long-chain acyl (methyl)taurine described in this invention refers to N-long-chain acylmethyl taurine or N-long-chain acyl taurine.

[0018] As examples, the N-long-chain acyl amino acid may be selected from cocoylalanine, lauroylalanine, cocoylsarcosine, lauroylsarcosine, lauroylglutamic acid, cocoylglutamic acid, oleoylglutamic acid, cocoylglycine, lauroylglycine, stearoylglutamic acid, etc. The present invention particularly prefers lauroylalanine (especially N-lauroyl-L-alanine), which has the strongest gel-forming ability.

[0019] Furthermore, based on ISO 16128 or T / SHRH 041-2022 standards, the natural source index of lauroyl sarcosine, cocoyl glycinate, methyl taurine, etc., is less than 0.8, while the natural source index of lauroyl alanine reaches 1. If the N-long chain acyl amino acid is chosen as lauroyl alanine, the natural source content of the formula can be significantly increased.

[0020] The synthesis process of N-long-chain acyl amino acid surfactants can refer to the general synthesis methods of N-acyl amino acid type surfactants, and is divided into direct methods and indirect methods. Direct synthesis methods from fatty acid raw materials include enzyme-catalyzed synthesis and dehydration condensation. Indirect synthesis methods include acylation of fatty acid acyl chlorides, hydrolytic acylation of fatty acid nitriles, acylation of fatty acid anhydrides, and amide carbonylation reactions. A preferred method is preparation via the amino reaction of fatty acyl chlorides with amino acids (Shotten-Baumann condensation reaction or Shotten-Baumann reaction).

[0021] A typical preparation process suitable for this invention is as follows: amino acids and sodium hydroxide are dissolved in water or a mixture of water and acetone to obtain an amino acid salt solution; then lauroyl chloride and sodium hydroxide solution are slowly added dropwise to the amino acid salt solution, controlling the pH of the reaction system; after the addition is complete, post-processing of the product is performed. Representative methods are disclosed in CN1798821A, US6703517B2, CN102875409B, JPH0570418A, etc.

[0022] For the post-processing of N-long-chain acyl amino acid products, conventional methods such as recrystallization, water washing, and drying can be used. A preferred post-processing step includes the following steps: mixing the crude N-long-chain acyl amino acid with a solvent, optionally stirring, and controlling the temperature T of the mixed system to be above the melting point of the long-chain fatty acid and below the melting point of the N-long-chain acyl amino acid. The solvent is water, an organic solvent, or a mixture of water and an organic solvent. After temperature control, solid-liquid separation is performed. Related methods are disclosed by the inventors in CN202210867760.7 and PCT / CN2022 / 107270, the contents of which are incorporated herein by reference.

[0023] (a) A salt of an N-long-chain acyl amino acid is a salt formed by an N-long-chain acyl amino acid and a base. The base is selected from one or more of inorganic bases, organic amines, and basic amino acids. The inorganic base is selected from one or more of sodium hydroxide, potassium hydroxide, sodium carbonate, and potassium carbonate, preferably sodium hydroxide or potassium hydroxide. The organic amine is selected from amines, alkanolamines, etc. For basic amino acids, it is selected from one or more of arginine, lysine, citrulline, ornithine, creatine, histidine, diaminobutyric acid, and diaminopropionic acid, preferably arginine and / or lysine, and most preferably L-arginine. The bases described in (a') and (a'') also have the same definition.

[0024] This invention has found that selecting basic amino acid salts of long-chain acyl amino acids or neutralizing long-chain acyl amino acids with basic amino acids is more conducive to gel formation than using inorganic bases. Furthermore, basic amino acids such as arginine, with a natural source index of 1, can significantly increase the natural source content of the formulation, making them particularly preferred in this invention.

[0025] N-long-chain acyl amino acids can be directly mixed into commercially available long-chain acyl amino acid salts such as Puji's YB02-30 (sodium cocoylaminopropionate), AS02-30 (sodium lauroyl sarcosinate), Tianci's AMIN LS30 (sodium lauroyl sarcosinate), Suzhou Weimei's LA-Arg 30 (lauroyl alanine arginine salt), and LA-Na 30 (sodium lauroyl alanine), or N-long-chain acyl amino acids can be directly mixed into a formulation containing (a) N-long-chain acyl amino acid salts to obtain (a) N-long-chain acyl amino acid salts and (b) free N-long-chain acyl amino acids.

[0026] Alternatively, N-long-chain acyl amino acids can be partially neutralized with a base to obtain (a') N-long-chain acyl amino acids partially neutralized with a base. Alternatively, a base and an N-long-chain acyl amino acid can be added to the formulation separately (corresponding to (a'')). Since the base is used for partial neutralization and the N-long-chain acyl amino acid is in excess, the system will contain both the neutralized N-long-chain acyl amino acid salt and the unneutralized free N-long-chain acyl amino acid, which is essentially equivalent to (a) the salt of the N-long-chain acyl amino acid + (b) the free N-long-chain acyl amino acid.

[0027] Furthermore, the weight percentage of (a)+(b), (a'), or (a'') in the green gel composition is 20 wt% or more, preferably 22 wt% or more, and more preferably 25 wt% or more. For example, it can be 20 wt%, 21 wt%, 22 wt%, 23 wt%, 24 wt%, 25 wt%, 26 wt%, 27 wt%, 28 wt%, 29 wt%, or 30 wt%.

[0028] For (a''), it is composed of a base and an N-long-chain acyl amino acid. Preferably, the base is arginine, and the N-long-chain acyl amino acid is alanine laurate. The content of the N-long-chain acyl amino acid is preferably 15 wt% or more. For example, it can be 15 wt%, 16 wt%, 17 wt%, 18 wt%, 19 wt%, or 20 wt%.

[0029] Furthermore, in the entire formulation system, the weight percentage of free N-long-chain acyl amino acids in the green gel composition is 2 wt% or more, preferably 3 wt% or more. A sufficient amount of free N-long-chain acyl amino acids ensures that gel formation can still occur even in the absence of amphoteric surfactants. For example, the amounts can be 2 wt%, 2.5 wt%, 3 wt%, 3.5 wt%, or 4 wt%. Appropriate amounts of free N-long-chain acyl amino acids can balance gel formation, washability, and low-temperature stability.

[0030] Furthermore, for (a') and (a''), the degree of neutralization is controlled to be above 65%, preferably above 70%, more preferably above 75%; and the degree of neutralization is below 95%, preferably below 90%, more preferably below 85%. For example, the degree of neutralization is 66%, 67%, 68%, 69%, 70%, 71%, 72%, 73%, 74%, 75%, 76%, 77%, 78%, 79%, 80%, 81%, 82%, 83%, 84%, 85%, 86%, 87%, 88%, 89%, and 90%. If the neutralization is too low, the low-temperature stability is poor, and the formulation is prone to precipitation. If the neutralization is too high, there is insufficient free N-long-chain acyl amino acids, the thickening effect is limited, and it is difficult to form a gel. The aforementioned degree of neutralization refers to the percentage of N-long-chain acyl amino acids that are neutralized. For example, 80% neutralization means that 80% of all N-long-chain acyl amino acids are neutralized by alkali to form salts, leaving 20% ​​as free N-long-chain acyl amino acids.

[0031] For component (c), hydrophilic nonionic surfactants, it refers to a class of nonionic surfactants that are hydrophilic and can be dispersed or dissolved in water to form emulsions or translucent to transparent solutions.

[0032] The present invention primarily prefers O / W type emulsifiers, or solubilizing nonionic surfactants, or nonionic surfactants with HLB 6 or higher.

[0033] The O / W type emulsifier refers to a type of substance that can uniformly disperse the oil phase (O, abbreviated as O) in the form of tiny droplets in the aqueous phase (Water, abbreviated as W), forming an oil-in-water (O / W) emulsion. In this invention, the O / W type emulsifier can stabilize free N-long-chain acyl amino acids, ensuring they do not precipitate, and can also have a synergistic effect on thickening and gelation.

[0034] The solubilizing nonionic surfactant refers to a nonionic surfactant with solubilizing properties, which can dissolve lipophilic raw materials in water. In this invention, it specifically refers to a surfactant that can dissolve lipophilic free N-long-chain acyl amino acids in water, ensuring that they do not precipitate, and can have a synergistic effect on thickening / gelling.

[0035] Preferably, the natural source index of the hydrophilic nonionic surfactant in (c) is greater than 0.5 and less than or equal to 1, and more preferably greater than 0.8, for example, 0.8, 0.85, 0.9, 0.95, or 1. Further, (c) the hydrophilic nonionic surfactant contains polyglycerol units; the polyglycerol unit refers to a polyglycerol group obtained by glycerol polymerization.

[0036] The present invention further preferably includes (c) a hydrophilic nonionic surfactant comprising polyglycerol fatty acid ester. The natural source index of the polyglycerol fatty acid ester is 1, and its proportion in (c) the hydrophilic nonionic surfactant is 50-100 wt%, for example, 50 wt%, 60 wt%, 70 wt%, 80 wt%, 90 wt%, or 100 wt%.

[0037] Furthermore, the polyglycerol fatty acid ester is selected from one or more of polyglycerol-3-methylglucose fatty acid ester, polyglycerol-2-fatty acid ester, polyglycerol-4-fatty acid ester, polyglycerol-6-fatty acid ester, polyglycerol-8-fatty acid ester, polyglycerol-10-fatty acid ester, and polyglycerol-12-fatty acid ester. Taking polyglycerol-10 fatty acid ester as an example, it includes polyglycerol-10 monostearate, polyglycerol-10 monoisostearate, polyglycerol-10 distearate, polyglycerol-10 oleate, polyglycerol-10 laurate, and polyglycerol-10 decanoate, etc.

[0038] The amount of hydrophilic nonionic surfactant (c) is related to the amounts of N-long-chain acyl amino acid salts, free N-long-chain acyl amino acids, and alkyl glycosides. If the amounts of N-long-chain acyl amino acid salts, free N-long-chain acyl amino acids, and alkyl glycosides are high, the amount of hydrophilic nonionic surfactant (c) can be appropriately reduced. Conversely, if the amounts of N-long-chain acyl amino acid salts, free N-long-chain acyl amino acids, and alkyl glycosides are low, the amount of hydrophilic nonionic surfactant (c) can be appropriately increased.

[0039] Considering that polyglycerol fatty acid esters have a weaker gel-forming ability than PEG-150 pentaerythritol tetrafatty acid ester, from the perspective of promoting gel formation, (c) the weight percentage (after conversion to 100%) of the hydrophilic nonionic surfactant in the green gel composition is 1-15 wt%, preferably 2-10 wt%. For example, it can be 1 wt%, 1.5 wt%, 2 wt%, 2.5 wt%, 3 wt%, 3.5 wt%, 4 wt%, 4.5 wt%, 5 wt%, 5.5 wt%, 6 wt%, 6.5 wt%, 7 wt%, 7.5 wt%, 8 wt%, 8.5 wt%, 9 wt%, 9.5 wt%, or 10 wt%.

[0040] For component (d) alkyl glycoside, it refers to alkyl glycoside surfactants. Classified by "fatty alcohol carbon chain length," there are short carbon chains (C8-C10), medium carbon chains (C12-C14), long carbon chains (C16-C18), and combinations of different carbon chains. It is further selected from one or more of octyl glucoside, decyl glucoside, cocoyl glucoside, lauryl glucoside, stearyl glucoside, palmityl glucoside, APG0810, APG0814, APG1214, APG1618, APG1216, APG0816, and APG2022.

[0041] (d) The addition of alkyl glycosides can effectively compensate for the insufficient gel-forming ability of polyglycerol fatty acid esters. Through the synergistic effect of alkyl glycosides, polyglycerol fatty acid esters, and partially neutralized N-long-chain acyl amino acids, a green gel product is prepared.

[0042] The amount of (d)alkyl glycoside used is related to the amount of free N-long-chain acyl amino acid and hydrophilic nonionic surfactant. If the amount of free N-long-chain acyl amino acid or hydrophilic nonionic surfactant is high, the amount of (d)alkyl glycoside can be appropriately reduced. Conversely, if the amount of free N-long-chain acyl amino acid or hydrophilic nonionic surfactant is low, the amount of (d) amphoteric surfactant can be appropriately increased.

[0043] Generally, the weight percentage (on a 100% basis) of (d) alkyl glycoside in the green gel composition is 1-20 wt%, preferably 5-15 wt%, and particularly preferably 5 wt% or more from a thickening perspective. Examples include 1 wt%, 2 wt%, 3 wt%, 4 wt%, 5 wt%, 6 wt%, 7 wt%, 8 wt%, 9 wt%, 10 wt%, 11 wt%, 12 wt%, 13 wt%, 14 wt%, 15 wt%, 16 wt%, 17 wt%, 18 wt%, 19 wt%, and 20 wt%.

[0044] The green gel composition may further contain other ingredients such as preservatives, fragrances / flavors, conditioning agents, dyes, chelating agents, extracts, amino acids, nucleic acids, vitamins, enzymes, anti-inflammatory agents, bactericides, antioxidants, UV absorbers, antiperspirants, pH adjusters, etc.

[0045] Based on ISO 16128 or T / SHRH 041-2022 standards, the natural source index of each component (a), (a'), (a''), (b), (c), and (d) of the aforementioned green gel composition is preferably 0.8 or higher, more preferably 0.9 or higher, and more preferably 1. For example, the natural source index of each component is 0.8, 0.85, 0.9, 0.95, and 1.

[0046] Based on ISO 16128 or T / SHRH 041-2022 standards, the present invention further preferably has a natural source content of 85% or more, more preferably 90% or more, and even more preferably 95% or more. For example, the natural source content is 85%, 86%, 87%, 88%, 89%, 90%, 91%, 92%, 93%, 94%, 95%, 96%, 97%, 98%, 99%, or 100%.

[0047] The green gel composition of the present invention can be used to prepare personal care products, household cleaning products, industrial cleaning products, etc. The personal care products include bath gels, shampoo gels, facial cleansing gels, makeup remover gels, and shaving gels; the household cleaning products include laundry gels, fabric cleaning gels, or kitchen cleaning gels.

[0048] In each implementation, details such as the selection of types and dosages not discussed can be referred to the relevant guidance of other implementations if there is no conflict in the content. For the sake of brevity, each implementation has not been described in detail.

[0049] Unless otherwise specified, "above," "below," and "A~B" in this invention all include the stated number. Since the solid content of raw materials varies among different manufacturers, the weight percentage (wt%) of each raw material mentioned in this invention refers to the weight percentage of that component after conversion to 100%. For example, if 10wt% sodium cocoaminopropionate (30% solid content) is added, the actual weight percentage of sodium cocoaminopropionate after conversion to 100% is 3wt%.

[0050] Compared with the prior art, the present invention has the following beneficial technical effects: 1. Even without using betaine and PEG150 pentaerythritol tetrafatty acid ester, which have low natural source indices, this invention can prepare a green gel product through the synergistic effect of alkyl glycosides, polyglycerol fatty acid esters, and partially neutralized N-long-chain acyl amino acids.

[0051] 2. The green gel product of this invention has a natural source content of over 85%, and can even reach 100%.

[0052] The present invention will be further illustrated below with reference to embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalents also fall within the scope defined by the appended claims.

[0053] Example Test Material Description LA stands for lauroyl alanine (from Suzhou Weimei), Arg stands for arginine (from Suzhou Weimei), CMMEA stands for cocamide methyl MEA, 430 stands for sorbitol polyether-30 tetraoleate (purchased from Kao), 150 stands for PEG-150 pentaerythritol tetrastearate (purchased from Croda), 160 stands for PEG-160 dehydrated sorbitol triisostearate (purchased from Kao), and DOE120 stands for PEG-120 methyl glucoside dioleate (purchased from Lubrizol).

[0054] The 30% marked in the raw materials (e.g., sodium cocoaminopropionate (30%)) means that the added raw materials are solutions with a solid content of 30%. For example, if 100g of sodium cocoaminopropionate (30%) is added, the actual amount of sodium cocoaminopropionate added is 30g.

[0055] 2. Test instruments Viscometer: Lichen rotational viscometer, model LC-NDJ-55.

[0056] 3. Experimental Procedure Unless otherwise specified, weigh each component according to the formula, heat to 70-85℃, and keep stirring until homogeneous. After the prepared sample has stabilized, remove it, select a suitable rotor and speed, and test the sample viscosity with a viscometer. Low-temperature testing involves keeping it at -5℃ for 48 hours for observation.

[0057] Table 1.1 Effect of free N-long-chain acyl amino acids (sodium cocoylaminopropionate)

[0058] The results showed that for formulations containing sodium cocoylaminopropionate, the solution had almost no viscosity if free N-long-chain acyl amino acids were lacking; however, after adding lauroyl alanine, the viscosity increased by several tens of times, and the solution became transparent and had good low-temperature stability.

[0059] Table 1.2 Effect of free N-long chain acyl amino acids (lauroyl glycine, LA)

[0060] The results showed that, whether it was lauroylglycine or lauroylalanine, if it was completely neutralized with alkali, there were no free N-long-chain acyl amino acids, and the formulation solution had almost no viscosity; if it was partially neutralized with alkali (80% neutralization), about 20% of the N-long-chain acyl amino acids in the formulation were in a free state, and the solution viscosity increased significantly.

[0061] Table 1.3 Effect of free N-long-chain acyl amino acids (lauroyl sarcosine)

[0062] The results showed that for formulations containing lauroyl sarcosine, if the free N-long-chain acyl amino acid is lacking (100% neutralization with alkali), the solution has no viscosity; however, if the solution is partially neutralized with alkali (80% neutralization), the viscosity of the solution increases, especially when the hydrophilic nonionic surfactant is 150 or 160, the viscosity increase is significant.

[0063] Table 1.4 Effect of free N-long-chain acyl amino acids (LA) Formula number 1-13 1-14 1-15 1-16 Element Amount added / g Amount added / g Amount added / g Amount added / g LA 30 30 30 30 NaOH 3.5 (80% neutralized) 3.5 (80% neutralized) 3.5 (80% neutralized) 3.5 (80% neutralized) 150 5 0 0 0 160 0 5 0 0 430 0 0 5 0 Polyglycerol-10 oleate / polyglycerol-2 oleate 0 0 0 5 Lauryl hydroxysulfonate betaine (30%) 35 35 35 35 glycerin 25 25 25 25 water 151.5 151.5 151.5 151.5 Viscosity / mPa·s Test Temperature 7053725℃ 3400725℃ 241425℃ 908625℃ Appearance Transparent at room temperature; micro-precipitation at low temperature, recovers at room temperature. Transparent at room temperature; micro-precipitation at low temperature, recovers at room temperature. Transparent at room temperature; precipitates at low temperature and recovers at room temperature. Transparent at room temperature; precipitates at low temperature and recovers at room temperature. Formula number 1-17 1-18 1-19 1-20 Element Amount added / g Amount added / g Amount added / g Amount added / g LA 30 30 30 30 Arg 15.4 (80% neutralized) 15.4 (80% neutralized) 15.4 (80% neutralized) 15.4 (80% neutralized) 150 5 0 0 0 160 0 5 0 0 430 0 0 5 0 Polyglycerol-10 oleate / polyglycerol-2 oleate 0 0 0 5 Lauryl hydroxysulfonate betaine (30%) 35 35 35 35 glycerin 25 25 25 25 water 139.6 139.6 139.6 139.6 Viscosity / mPa·s Test Temperature >100,000 25℃ 5645625℃ 116925℃ 270125℃ Appearance Transparent at room temperature; stable at low temperatures, a solid-like gel with no precipitation. Transparent at room temperature; stable at low temperatures, a solid-like gel with no precipitation. Transparent at room temperature; stable at low temperatures with no precipitation. Transparent at room temperature; stable at low temperatures with no precipitation. The results showed that, compared to lauroyl sarcosine (1-9 to 1-12), the thickening effect of the formulation containing lauroyl alanine (1-13 to 1-20) was improved by more than 5-10 times. Partial neutralization of lauroyl alanine with a basic amino acid (arginine) resulted in significantly better low-temperature stability than partial neutralization with an inorganic base (sodium hydroxide).

[0064] Table 2 Preparation of green gel (wt% is the content after 100% conversion) Formula number 2-1 2-2 2-3 (This invention) 2-4 (This invention) Element Amount added / wt% Amount added / wt% Amount added / wt% Amount added / wt% LA 15 19 18 18 Arg 7.7 (80% neutralized) 9.7 (80% neutralized) 9.24 (80% neutralized) 9.24 (80% neutralized) 150 2.5 1 0 0 Polyglycerol-10 stearate 0 0 5 0 Polyglycerol-10 distearate 0 0 0 5 APG10 Decyl Glucoside 0 0 9 10 Lauryl hydroxysulfonyl betaine 0 0 0 0 water margin margin margin margin Appearance (at room temperature) gel gel gel gel The results showed that, without the addition of 150 and betaine, this invention produces a green gel product through the synergistic effect of partially neutralized N-long-chain acyl amino acids, polyglycerol fatty acid esters, and alkyl glycosides. All raw materials have a natural source index of 1, and the entire formulation is 100% natural.

[0065] Furthermore, those skilled in the art will understand that although some embodiments described herein include certain features included in other embodiments but not others, combinations of features from different embodiments are meant to be within the scope of the invention and form different embodiments.

Claims

1. A green gel composition comprising (a) a salt of an N-long-chain acyl amino acid, (b) a free N-long-chain acyl amino acid, (c) a hydrophilic nonionic surfactant, and (d) an alkyl glycoside. Or, it contains (a') an N-long-chain acyl amino acid partially neutralized with an alkali, with a degree of neutralization of less than 100%, such that it contains a salt of the N-long-chain acyl amino acid and a free N-long-chain acyl amino acid, (c) a hydrophilic nonionic surfactant, and (d) an alkyl glycoside. Or, it contains (a'') a base and an N-long-chain acyl amino acid, and the molar number of the base is less than that of the N-long-chain acyl amino acid, such that the neutralization degree of the N-long-chain acyl amino acid is less than 100%, thereby containing a salt of the N-long-chain acyl amino acid and free N-long-chain acyl amino acid, (c) a hydrophilic nonionic surfactant, and (d) an alkyl glycoside. Furthermore, (c) the hydrophilic nonionic surfactant includes polyglycerol fatty acid esters; The weight percentage of component (a)+(b), (a') or (a'') in the gel composition is 20 wt% or more, preferably 22 wt% or more, and more preferably 25 wt% or more.

2. The green gel composition according to claim 1, characterized in that, The N-long-chain acyl amino acid mentioned in (a), (a'), (a''), and (b) is lauroyl alanine.

3. The green gel composition according to claim 1, characterized in that, (a) The salt of N-long chain acyl amino acid is the arginine salt of N-long chain acyl amino acid, and the base mentioned in (a') and (a'') is arginine.

4. The green gel composition according to claim 1, characterized in that, For (a') and (a''), the degree of neutralization is 65% or more, preferably 70% or more, more preferably 75% or more; and the degree of neutralization is 95% or less, preferably 90% or less, more preferably 85% or less.

5. The green gel composition according to claim 1, characterized in that, The free N-long-chain acyl amino acids in the green gel composition have a weight percentage of 2 wt% or more, preferably 3 wt% or more.

6. The green gel composition according to claim 1, characterized in that, The polyglycerol fatty acid ester is selected from one or more of polyglycerol-3-methylglucose fatty acid ester, polyglycerol-2 fatty acid ester, polyglycerol-4 fatty acid ester, polyglycerol-6 fatty acid ester, polyglycerol-8 fatty acid ester, polyglycerol-10 fatty acid ester, and polyglycerol-12 fatty acid ester.

7. The green gel composition according to claim 1, characterized in that, (c) The hydrophilic nonionic surfactant is present in the green gel composition at a weight percentage of 1-15 wt%, preferably 2-10 wt%; And / or, (c) the hydrophilic nonionic surfactant contains 50-100 wt% polyglycerol fatty acid ester.

8. The green gel composition according to claim 1, characterized in that, (d) The alkyl glycoside in the green gel composition is 1-20 wt%, preferably 5-15 wt%.

9. The green gel composition according to claim 1, characterized in that, Based on ISO 16128 or T / SHRH041-2022 standards, the natural source index of each component (a), (a'), (a''), (b), (c), and (d) is 0.8 or higher, preferably 0.9 or higher, and more preferably 1. And / or, based on ISO 16128 or T / SHRH 041-2022 standards, the natural source content of the green gel composition is above 85%, preferably above 90%, and more preferably above 95%.

10. The use of a green gel composition as described in any one of claims 1-9 in the preparation of personal care products, household cleaning products, and industrial cleaning products.

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