High-foaming self-thickening amino acid cleaning composition and preparation method thereof

Abstract

The invention provides a high-foaming self-thickening amino acid cleaning composition and a preparation method thereof, and relates to the technical field of cosmetics. The high-foaming self-thickening type amino acid cleaning composition is prepared from the following raw materials in percentage by mass: main surfactants: 15%-20% of potassium cocoyl glycinate, 0.5%-2.0% of sodium cocoyl amino propionate and 0.05%-2% of sodium lauroyl glutamate; the auxiliary surfactant comprises the following components in percentage by weight: 1.2%-1.8% of sodium lauroamphoacetate, 1.8%-3.6% of lauryl hydroxyl sulfobetaine, 0.5%-1.5% of sodium methyl cocoyl taurate and 0.5%-1.5% of lauryl glucoside; and 0.5%-1.8% of an acrylic ester copolymer. The cleaning composition is free of fatty acid components, small in irritation, rich and dense in foam, good in foam performance, high in cleaning power, good in flushing performance, free of false slip after flushing and good in stability.

Description

Technical Field

[0001] This application relates to the field of cosmetic technology, and in particular to a high-foaming, self-thickening amino acid cleaning composition and its preparation method. Background Technology

[0002] Commercially available liquid facial cleansers can be broadly categorized into crystalline and thickened types based on their formulation technology. Crystalline facial cleansers (such as soap-based or amino acid-based cleansers) typically utilize the crystallization properties of specific surfactants to form a relatively hard, semi-solid texture. Crystalline facial cleansers generally offer advantages such as high cleaning power, easy spreadability, rapid foaming, rich lather, and easy rinsing. However, crystalline facial cleansers usually require high-temperature formulation and cooling crystallization processes, making production conditions difficult to control, resulting in significant batch-to-batch stability variations, poor paste stability, and a tendency to harden and coarse at low temperatures, or separate or thin and overflow at high temperatures. Overall, their cost is higher. Thickened facial cleansers (such as cleansing milks or gels) achieve a certain viscosity by mixing thickeners (such as carbomer or xanthan gum) with surfactants. Their manufacturing process is relatively simple, and they offer user-friendly performance. However, because amino acid surfactants are difficult to thicken, products often require the addition of a large amount of thickener or the use of low concentrations of surfactants, which makes the product difficult to spread, slow to foam, and lacking in foam. It also results in a slippery feeling when used, difficulty in rinsing, and a feeling of uncleanliness after rinsing, thus affecting the performance of the product.

[0003] Patent CN107582427A discloses a non-soap-based facial cleanser and its preparation method. The main raw materials include 24-75% anionic surfactant, 5-20% thickening and stabilizer, 2-8% organic synthetic water-soluble polymer, 3-5% fatty acid, and 10-20% polyol. This non-soap-based facial cleanser has a high viscosity after thickening, and the viscosity can be adjusted within a wide range. When used, it exhibits excellent skin feel, good viscosity stability, and high and low temperature stability. It also has good foaming power, foam stability, foaming speed, foam richness, and easy rinsing. However, this non-soap-based facial cleanser still contains a certain amount of fatty acids, posing a certain risk of irritation.

[0004] Patent CN106726698A discloses an amino acid facial cleanser, the raw materials of which are: 10-30wt% amino acid surfactant, 0.5-2wt% thickener, 0.2-2.5wt% neutralizer, 0.1-1wt% conditioning agent, and deionized water. This amino acid-based facial cleanser is neutral, gentle on the skin, safe and non-irritating, does not increase the burden on the skin, can deeply cleanse the skin, and quickly restores the skin's oil-water balance and pH balance after cleansing. It is suitable for all skin types and can be used long-term. However, because this invention adds a large amount of macromolecular thickener and an additional high content of salt to stabilize the system, it has a certain potential irritation to the skin and mucous membranes. Furthermore, this patent does not disclose the performance characteristics of this amino acid facial cleanser.

[0005] Patent CN 120204082 A discloses a mild, highly moisturizing amino acid facial cleanser and its preparation method, comprising the following raw material components by mass percentage: 10-20% amino acid surfactant, 5-15% moisturizer, 2-6% cyclodextrin derivative, 0.5-2% pearlescent agent, 0.05-0.2% fragrance, 0.05-0.5% preservative, and the balance being water. This invention uses a cyclodextrin derivative combined with a polyhydroxy moisturizer to thicken and synergistically moisturize the amino acid surfactant, significantly improving the thickening ability, foaming properties, and cleansing ability of the amino acid facial cleanser, and significantly enhancing the skin feel. However, the main component of this facial cleanser, the cyclodextrin derivative, involves chemical modification, posing certain risks, and is not easily obtained, making its use somewhat difficult.

[0006] Although some progress has been made in the research of amino acid facial cleansers, in order to obtain a certain consistency and stability, existing amino acid facial cleansers usually need to add other special synergistic thickeners or macromolecular thickeners. These not only affect the foaming performance and ease of rinsing of the product, but also result in a slippery feeling and a weak cleansing sensation. Summary of the Invention

[0007] The purpose of this application is to address the shortcomings of the prior art by providing a high-foaming, self-thickening amino acid cleaning composition and its preparation method.

[0008] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0009] According to one aspect of this application, a highly foaming, self-thickening amino acid cleaning composition is provided, comprising the following raw materials by weight percentage:

[0010] Main surfactants: potassium cocoyl glycinate 15%–20%, sodium cocoyl aminopropionate 0.5%–2.0%, sodium lauroyl glutamate 0.05%–2%;

[0011] Co-surfactants: sodium lauroylamphoteric acid 1.2%–1.8%, lauryl hydroxysulfonate 1.8%–3.6%, sodium methyl cocoyl taurate 0.5%–1.5%, lauryl glucoside 0.5%–1.5%;

[0012] Acrylic ester copolymers: 0.5%–1.8%.

[0013] Preferably, the high-foaming, self-thickening amino acid cleaning composition comprises, by weight percentage, the following raw materials:

[0014] Main surfactants: potassium cocoyl glycinate 16.8%, sodium cocoyl aminopropionate 1.2%;

[0015] Co-surfactants: Sodium lauroamphoacetate 1.5%, lauryl hydroxysulfonate betaine 2.7%, sodium methyl cocoyl taurate 0.9%, lauryl glucoside 1%;

[0016] Acrylic copolymers 1.8%.

[0017] Preferably, the chloride ion content in the potassium cocoyl glycinate ranges from 0.5% to 1.5%.

[0018] More preferably, the chloride ion content in the potassium cocoyl glycinate ranges from 0.5% to 1.0%.

[0019] Optionally, the sodium lauroamphoacetate is selected from MIRANOL ULTRA L-32 or DEHYTON ML.

[0020] Furthermore, the highly foaming, self-thickening amino acid cleaning composition also contains 0-1% polyquaternium salt, preferably 0.5-1% by mass, more preferably 0.75%.

[0021] Optionally, the polyquaternary ammonium salt is selected from Merquat. TM 740NP, Merquat TM Any one of the three grades 550, SUPCARE 627, preferably Merquat. TM 740NP.

[0022] Furthermore, the high-foaming, self-thickening amino acid cleaning composition also contains 0-4% by mass of modified corn starch, preferably 2-4%, more preferably 3%.

[0023] Furthermore, the modified corn starch is obtained by enzymatic hydrolysis of corn starch with a compound enzyme, and has an average molecular weight of 600,000 to 800,000 g / mol; the compound enzyme is α-amylase, β-amylase and glucosidase in a mass ratio of 1:(0.8 to 1.2):(1.5 to 2.5), preferably α-amylase, β-amylase and glucosidase in a mass ratio of 1:1:2.

[0024] The modified corn starch is prepared by the following method:

[0025] (1) Prepare a suspension by adding water to natural corn starch and adjust the pH to 6.0-6.5;

[0026] (2) Stepwise enzymatic hydrolysis is performed using a complex enzyme; the stepwise enzymatic hydrolysis steps include:

[0027] Heat to 85-90℃ and add α-amylase for liquefaction treatment for 30-35 minutes;

[0028] Cool to 60-65℃ and add β-amylase to hydrolyze for 20-25 minutes;

[0029] Further cool to 50-55℃, add glucosidase and react for 4-4.5 hours;

[0030] (3) After the reaction is completed, enzyme inactivation at 100℃, centrifugation, washing with ethanol, vacuum drying and pulverization are carried out in sequence.

[0031] Optionally, in step (1), the mass fraction of natural corn starch in the suspension is 20% to 40%, preferably 30%.

[0032] Optionally, in step (2), the total amount of compound enzyme added is 1.8 to 2.5% of the dry starch mass, preferably 2%.

[0033] According to another aspect of this application, a method for preparing a highly foaming, self-thickening amino acid cleaning composition is provided, comprising the following steps:

[0034] S1. Add water to the main pot, add the acrylate copolymer, heat to 80℃~85℃ and keep it warm while stirring. After confirming that there is no obvious clumping, add the main surfactant.

[0035] S2. When the temperature of the material in the main pot drops to 60℃~65℃, add the auxiliary surfactant, continue stirring for 15~20min, cool down to 33℃~37℃, stop stirring, and discharge the material.

[0036] Furthermore, in step S1, modified corn starch is added and mixed before adding the acrylate copolymer.

[0037] Furthermore, in the preparation process of the high-foaming, self-thickening amino acid cleaning composition, stirring accelerates the mixing and ensures uniformity of the materials. The stirring speed can be adjusted according to the actual situation, but is generally not less than 50 rpm. Specifically, in step S1, the stirring speed is preferably low-speed stirring, with a stirring speed of 50 rpm to 100 rpm; in step S2, the stirring speed is preferably medium-speed stirring, with a stirring speed of 100 rpm to 150 rpm.

[0038] Compared with the prior art, this application has the following beneficial effects:

[0039] 1. This application provides a high-foaming, self-thickening amino acid cleaning composition. This cleaning composition does not contain any fatty acid components, has low irritation, produces rich and dense foam, has good foaming properties, strong cleaning power, excellent rinsing performance, does not leave a slippery residue after rinsing, and has good stability.

[0040] 2. The cleaning composition of this application uses potassium cocoyl glycinate and sodium cocoyl aminopropionate as the main surfactants, and sodium lauroyl amphoteric acid and lauryl hydroxysulfonate as auxiliary surfactants. The combination of main and auxiliary surfactants has a synergistic thickening effect, while also having good foaming properties and strong cleaning ability.

[0041] 3. This application selects potassium cocoyl glycinate with a chloride ion content of 0.5-1.5% as the main surfactant component, which can improve the foaming and foam stabilizing properties of the cleaning combination, enhance the cleaning ability, and to a certain extent improve the rinsing performance of the product and reduce the slippery feeling.

[0042] 4. The addition of specific polyquaternium salts to the cleaning composition of this application can increase the moisturizing feel of the composition without reducing foaming performance or increasing slippery feeling; the addition of starch modified with added compound enzymes can provide moderate fluidity and smooth and delicate texture compared with unmodified corn starch or conventional modified starch, while also ensuring good foaming performance. Attached Figure Description

[0043] Figure 1 The images show the foam of composition 4 obtained in Example 4 of this application and a commercially available amino acid facial cleanser (competitor A);

[0044] Figure 2 This is a schematic diagram showing the foaming performance test results of compositions 4 and 11 of this application and a commercially available amino acid facial cleanser (competitor A). Detailed Implementation

[0045] The following non-limiting embodiments are intended to enable those skilled in the art to gain a more comprehensive understanding of this application, but do not limit this application in any way. The following content is merely an exemplary description of the scope of protection claimed in this application, and those skilled in the art can make various changes and modifications to the invention based on the disclosed content, which should also fall within the scope of protection claimed in this application.

[0046] Unless otherwise specified, all chemical reagents used in the embodiments of this application were obtained through conventional commercial channels. Specifically, MIRANOL ULTRA L-32 was purchased from Solvay (Zhenjiang) Chemicals Co., Ltd.; DEHYTON ML was purchased from BASF Co., Ltd.; and Merquat... TM 740NP raw material was purchased from Lubrizol Management (Shanghai) Co., Ltd.; Merquat TM 550 raw material was purchased from Lubrizol Management (Shanghai) Co., Ltd.; SUPCARE 627 raw material was purchased from Shanghai Hongdu Fine Chemical Co., Ltd.; Structure XL raw material was purchased from Nouryon Chemicals (Boxin) Co., Ltd.; AGENAFLO 9050 raw material was purchased from AGRANA. Starch Fixative's raw materials were purchased from Norian Chemicals (Boxing) Co., Ltd.;

[0047] The present application will be further described below by way of specific embodiments.

[0048] Examples 1-3

[0049] A highly foaming, self-thickening amino acid cleaning composition, the preparation method of which includes the following steps:

[0050] Add water to the main pot, add SF-1, heat to 80℃, stir at low speed (50 rpm) until there is no obvious clumping, then add potassium cocoyl glycinate, sodium cocoyl aminopropionate, and sodium lauroyl glutamate in sequence. Cool down to 60℃, then add sodium lauroamphoacetate, lauryl hydroxysulfonate, sodium methyl cocoyl taurate, and lauryl glucoside, and stir until the material is uniform. Continue stirring and cool down to 37℃. After confirming that the material is uniform, stop stirring and discharge the material.

[0051] In this embodiment, compositions 1 to 3 were prepared according to the above formula and method. The specific formulas of compositions 1 to 3 are shown in Table 1 below.

[0052] Table 1

[0053]

[0054]

[0055] Examples 4-9

[0056] The difference from Example 1 is that a polyquaternium salt is also added, as detailed in Table 2 below.

[0057] Table 2

[0058]

[0059] Examples 10-17

[0060] The difference from Example 1 is that modified corn starch is added. The modified corn starch is added before SF-1, and the preparation method of the modified starch is as follows:

[0061] (1) Prepare a suspension of natural corn starch with water at a mass fraction of 30% and adjust the pH to 6.0;

[0062] (2) Stepwise enzymatic hydrolysis is performed using a complex enzyme; the stepwise enzymatic hydrolysis steps include:

[0063] (a) Heat to 90°C and add α-amylase for liquefaction treatment for 30 min;

[0064] (b) Cool to 65°C and add β-amylase for hydrolysis for 20 min;

[0065] (c) Cool the temperature further to 55°C and add glucosidase to react for 4 hours;

[0066] (3) After the reaction is completed, enzyme inactivation at 100℃, centrifugation, washing with ethanol, vacuum drying and pulverization are carried out in sequence.

[0067] The compound enzyme consists of α-amylase, β-amylase, and glucosidase in a mass ratio of 1:(0.8–1.2):(1.5–2.5); the total amount of compound enzyme added is 2% of the dry starch mass.

[0068] Compositions 10-17 were prepared according to the above method. Except for the modified corn starch, the formulations of compositions 10-17 were the same as those in Example 1. The specific amounts of modified corn starch added and the ratio of the compound enzymes in the preparation of modified corn starch are shown in Table 3 below.

[0069] Table 3

[0070]

[0071] Examples 18-21

[0072] The difference between Examples 18-21 and Example 11 is that the modified corn starch was successively replaced with equal amounts of unmodified natural corn starch, hydroxypropyl starch phosphate Structure XL, and AGENAFLO 9050. StarchFixative was used to prepare compositions 18–21 sequentially.

[0073] Comparative Example 1

[0074] The difference from Example 1 is that the Cl of potassium cocoyl glycinate... - Composition 22 was prepared with a content of 0.3%.

[0075] Comparative Example 2

[0076] The difference from Example 1 is that the Cl of potassium cocoyl glycinate... - Composition 23 was prepared with a content of 2.5%.

[0077] Comparative Example 3

[0078] The difference from Example 1 is that the Cl of potassium cocoyl glycinate... - Composition 24 was prepared with a content of 3.5%.

[0079] Test case

[0080] Foam performance evaluation: (1) Wash hands thoroughly, take 0.5g of Composition 4 and commercially available amino acid facial cleanser (competitor A) into the palm of your hand, add 10g of water and rub in circles for 20 circles, concentrate the foam in the palm of your hand, take a picture to record, and obtain foam pictures of the two products as follows. Figure 1 As shown, the amino acid cleaning composition of this application produces finer and richer foam.

[0081] (2) The foam performance of the samples was tested using a DFA 100 foam analyzer. 50 ml of a 1% sample aqueous solution was prepared, the rotation speed was set to 3500 rpm, and the time was 1 min. The foam generation process curve and the maximum foam height were recorded. The foam generation process curve is shown below. Figure 2 As shown, the product is scored against competing product A in the market (1 to 10 points, with 10 points being the best).

[0082] Stability: The stability of the prepared product was tested according to the Cosmetic Stability Testing Standard T / GDCQMA002-2023. A mark of ○ indicates passing the test, and a mark of × indicates failing the test.

[0083] Viscosity: After placing the prepared product in a 25℃ constant temperature incubator for 12 hours, use...

[0084] The Brookfield / RVDV2T viscometer was used to test the viscosity of the product. The test conditions were: rotation speed of 20 rpm and test time of 1 min.

[0085] Sensory evaluation: A sensory evaluation team of 15 people scored the product on its foaming speed, foam richness, spreadability, rinsing ease, cleaning power, and post-wash moisturizing effect. 1 point was the worst overall performance and 10 points was the best overall performance. The results were taken as the average (integer).

[0086] The results are shown in Tables 4, 5 and 6 below.

[0087] Table 4. Results of foam performance and stability tests

[0088] Composition Maximum bubble height (mm) Foam performance rating stability 1 117.3 8 ○ 2 115.2 8 ○ 3 116.5 8 ○ 4 120.2 9 ○ 5 115.4 8 ○ 6 116.2 8 ○ 7 103.4 7 ○ 8 101.5 6 ○ 9 102.3 6 ○ 10 110.2 8 ○ 11 119.4 9 ○ 12 115.2 8 ○ 13 100.4 6 ○ 14 105.2 7 × 15 104.3 6 × 16 104.5 6 × 17 105.1 6 × 18 100.2 5 × 19 103.5 6 × 20 100.5 5 ○ 21 100.3 5 ○ 22 100.4 5 ○ 23 101.2 5 ○ 24 100.1 5 ○

[0089] Table 5. Viscosity Test Results

[0090]

[0091]

[0092] Table 6. Sensory evaluation results

[0093] Composition Foaming speed Foam abundance Ease of spreading Ease of rinsing Cleaning power Moisturizing feeling after washing Overall score 1 8 8 8 8 8 7 47 2 8 8 8 8 7 7 46 3 8 8 8 8 8 7 47 4 8 9 8 8 8 9 50 5 8 8 8 8 8 8 48 6 8 8 8 8 8 9 49 7 7 7 8 7 7 9 45 8 7 6 8 7 7 8 43 9 7 6 8 7 7 8 43 10 8 8 8 8 8 7 47 11 8 9 8 8 8 7 48 12 8 8 8 8 8 7 47 13 7 6 6 7 7 7 40 14 6 7 7 7 6 7 40 15 6 6 7 6 7 7 39 16 6 6 7 6 7 7 39 17 6 6 7 6 7 7 39 18 6 5 7 7 7 7 39 19 7 6 7 6 7 7 40 20 7 5 8 7 6 7 40 21 7 5 8 7 6 7 40 22 6 5 8 7 6 7 39 23 6 5 8 7 6 7 39 24 6 5 8 7 6 7 39

[0094] Figure 2 The figures show the foaming performance test results of compositions 4 and 11 of this application and a commercially available amino acid facial cleanser (competitor A). As shown in the figure, compared with competitor A, the amino acid cleansing composition obtained in this application has a larger foam volume and richer, denser foam.

[0095] As shown in the table above, solutions of compositions with a mass fraction of 1% in the ranges of 1-6 and 10-12 all have a foaming volume of not less than 110 mL, producing abundant foam with a high foam performance score. They also exhibit good stability, showing no stratification or other phenomena after being placed at room temperature or 50°C for one week, maintaining good homogeneity, and no clumping occurred during freeze-thaw cycles. In addition to producing richer and denser foam, the compositions also leave the skin feeling neither tight nor slippery after washing.

[0096] Compared to composition 1, compositions 4-6 show an increase in post-wash moisturizing rating from 7 to 8-9. Users can clearly feel the improved moisturizing effect and more hydrated skin after washing. Therefore, the addition of specific polyquaternium salts can increase the moisturizing effect of the compositions without reducing foam performance or increasing the slippery feeling. Although compositions 1-3 have good foam performance, their viscosity is low and they are prone to flowing, making them unsuitable for packaging in tubes. Compositions 10-11 contain specific modified corn starch, increasing the viscosity of the compositions to maintain it in the range of 9000-12000 mPa·s. Compositions in this viscosity range are less prone to flowing and can ensure a certain degree of fluidity, making them easy to extrude and spread while maintaining good foam performance.

[0097] Compared to composition 4, compositions 7-9 exhibited decreased foam volume, less foam, and a slippery feel upon rinsing, resulting in a false slippery sensation. This indicates that adding specific types and amounts of polyquaternium salts to the compositions helps improve foam performance, increase foam richness, and enhance the user experience.

[0098] Compared to composition 11, composition 13 showed a significant decrease in foam volume, increased viscosity, and a viscous consistency with less foam. Compositions 14 and 15 also exhibited decreased foam volume, making them less prone to foaming and reducing stability; both showed stratification after one week at 50°C. Compositions 16 and 17 also showed decreased foam volume, making them less prone to foaming, and clumping occurred after three freeze-thaw cycles in the freeze-thaw stability test. Composition 18 used untreated modified corn starch, resulting in a composition that was difficult to foam and exhibited stratification after one week at 50°C. Composition 19 used a commercially available product, resulting in an overly viscous composition that was difficult to foam and showed stratification after one week at room temperature. Compositions 20 and 21 showed reduced foam richness. Therefore, it can be concluded that adding modified corn starch obtained by enzymatic hydrolysis of specific complex enzymes to the compositions can achieve thickening without reducing the foaming speed or amount, and without increasing the slippery feel.

[0099] Compared to composition 1, compositions 22-24 have a slower foaming speed, less foam, poorer cleaning power, and a worse user experience. Therefore, it can be concluded that potassium cocoyl glycinate has a lower Cl... - The content of amino acid cleaning compositions affects their foaming properties; selecting specific Cl... - The concentration helps to increase foaming speed, foam richness, and cleaning power.

[0100] The above description of the embodiments is provided to enable those skilled in the art to understand and use the invention. It will be apparent to those skilled in the art that various modifications can be made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, this application is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of this application without departing from the scope of this application should be within the protection scope of this application.

Claims

1. A high-foaming self-thickening amino acid cleaning composition characterized in that, It contains the following ingredients by weight percentage: Main surfactants: potassium cocoyl glycinate 15%–20%, sodium cocoyl aminopropionate 0.5%–2.0%, sodium lauroyl glutamate 0.05%–2%; Co-surfactants: sodium lauroylamphoteric acid 1.2%–1.8%, lauryl hydroxysulfonate 1.8%–3.6%, sodium methyl cocoyl taurate 0.5%–1.5%, lauryl glucoside 0.5%–1.5%; Acrylic ester copolymers: 0.5%–1.8%.

2. The high-foaming, self-thickening amino acid cleaning composition according to claim 1, characterized in that, The chloride ion content in the potassium cocoyl glycinate ranges from 0.5% to 1.5%, preferably from 0.5% to 1.0%.

3. The high-foaming, self-thickening amino acid cleaning composition according to claim 1, characterized in that, The sodium lauroylamphoacetate is selected from MIRANOL ULTRA L-32 or DEHYTON ML.

4. The high-foaming, self-thickening amino acid cleaning composition according to claim 1, characterized in that, The high-foaming, self-thickening amino acid cleaning composition also contains 0-1% polyquaternium salt, preferably 0.5-1% by mass, more preferably 0.75%.

5. The high-foaming, self-thickening amino acid cleaning composition according to claim 4, characterized in that, The polyquaternary ammonium salt is selected from Merquat TM 740NP, Merquat TM 550, SUPCARE 627 any one of the three grades, preferably Merquat TM 740NP.

6. The high-foaming, self-thickening amino acid cleaning composition according to claim 1, wherein, The high-foaming, self-thickening amino acid cleaning composition also contains 0-4% by mass of modified corn starch, preferably 2-4%, more preferably 3%.

7. The high-foaming, self-thickening amino acid cleaning composition according to claim 6, characterized in that, The modified corn starch is obtained by enzymatic hydrolysis of corn starch with a compound enzyme, and the average molecular weight of the modified corn starch is 600,000 to 800,000 g / mol; the compound enzyme is α-amylase, β-amylase and glucosidase in a mass ratio of 1:(0.8 to 1.2):(1.5 to 2.5), preferably α-amylase, β-amylase and glucosidase in a mass ratio of 1:1:

2.

8. The high-foaming, self-thickening amino acid cleaning composition according to claim 6 or 7, characterized in that, The modified corn starch is prepared by the following method: (1) Prepare a suspension by adding water to natural corn starch and adjust the pH to 6.0-6.5; (2) Stepwise enzymatic hydrolysis is performed using a complex enzyme; the stepwise enzymatic hydrolysis steps include: Heat to 85-90℃ and add α-amylase for liquefaction treatment for 30-35 minutes; Cool to 60-65℃ and add β-amylase to hydrolyze for 20-25 minutes; Further cool to 50-55℃, add glucosidase and react for 4-4.5 hours; (3) After the reaction is completed, enzyme inactivation at 100℃, centrifugation, washing with ethanol, vacuum drying and pulverization are carried out in sequence.

9. A method for preparing the high-foaming, self-thickening amino acid cleaning composition according to any one of claims 1-8, characterized in that, Includes the following steps: S1. Add water to the main pot, add the acrylate copolymer, heat to 80℃~85℃ and keep it warm while stirring. After confirming that there is no obvious clumping, add the main surfactant. S2. When the temperature of the material in the main pot drops to 60℃~65℃, add the auxiliary surfactant, continue stirring for 15~20min, cool down to 33℃~37℃, stop stirring, and discharge the material.

10. The preparation method according to claim 9, characterized in that, Step S1 includes adding modified corn starch and mixing it before adding the acrylate copolymer.

Images