Composition formula for cleaning school uniform, preparation method and application

Abstract

The invention discloses a composition formula for cleaning a school uniform. The composition formula is prepared from the following components: 15 to 20 parts of alkyl glycoside, 8 to 12 parts of cocamidopropyl betaine, 1 to 3 parts of EDTA (Ethylene Diamine Tetraacetic Acid)-disodium, 3 to 5 parts of sodium citrate, 2 to 4 parts of potassium pyrophosphate, 5 to 10 parts of emulsion decomposer, 1 to 2 parts of polyhexamethylene biguanide hydrochloride, 0.5 to 1.5 parts of tea tree essential oil, 0.1 to 0.3 part of stabilizer and the balance of solvent. The preparation process comprises the following steps: firstly adding deionized water according to a formula ratio into a reaction container, then adding alkyl glycoside and cocamidopropyl betaine, then adding EDTA-disodium, sodium citrate, potassium pyrophosphate and polyethylene glycol 400, and finally adding compound enzyme, polyhexamethylene biguanide hydrochloride, tea tree essential oil and xanthan gum. According to the present invention, with the composition, the efficient decontamination and the mild clothes protection can be achieved by compounding the surfactant, the synergist and the functional auxiliary agent according to the fabric, the stain and other requirements of the school uniform cleaning so as to provide the school uniform cleaning composition with the good market prospect in the fields of laundry detergents, washing soaps, soaking washing powder, explosion salt, soap powder and cleaning paste.

Description

Technical Field

[0001] This invention belongs to the field of school uniform cleaning, and mainly relates to a composition formulation, preparation method and application for cleaning school uniforms. Background Technology

[0002] There are many cleaning agents on the market for school uniforms, but in actual use, they are not very effective at cleaning stubborn stains, and frequent use of cleaning agents can damage the fabric of school uniforms.

[0003] Among the existing school uniform cleaners, we found that their shortcomings are mainly reflected in the following aspects: First, the balance between cleaning power and garment care is disrupted, which can lead to severe damage to clothing when using cleaning agents.

[0004] (1) The removal rate of common mixed stains such as sweat, oil and mud on school uniforms is only 67-80%, and the effect is not good for old stains, which often require multiple washes, so the cleaning power is insufficient; (2) If the alkalinity is too strong, the pH is generally greater than 10, which will cause the school uniform fibers to harden and deform. This is especially noticeable in polyester-cotton blended materials. After using the detergent 20 times, the strength of the fabric will decrease by more than 8%, which is far beyond the industry standard requirement of 5%, and will seriously damage the clothing.

[0005] Secondly, it is not specifically designed for certain stains and cannot effectively remove them.

[0006] (1) Incomplete removal of sweat stains from the collar and cuffs of school uniforms can easily lead to the formation of a difficult-to-remove yellow oxide layer; (2) Oil stains remain after washing. The oil stains in the canteen are difficult to fully react with ordinary surfactants, and there is still a slippery feeling after cleaning. Additional pre-treatment is required.

[0007] Secondly, there are requirements for use. If the conditions for use are not met, there will be no effect or the effect will be halved after use.

[0008] Most products require 40-60℃ hot water to activate, and their effectiveness is greatly reduced in winter when there is no hot water in the dormitory. The cleaning power of cold water drops to below 65%. The long soaking time, with ordinary stains requiring 45-60 minutes and stubborn stains even requiring 3 hours, is not suitable for the fast-paced campus life. Often, the results are greatly reduced because the soaking time is not met. Finally, the dosage is difficult to control; too little will be ineffective, while too much will leave residue or damage the fabric.

[0009] The dosage for a single application needs to be precisely controlled within the range of 20-30g. However, it is difficult to strictly control the dosage based on the weight of the clothing during use, so the effect is not good.

[0010] In order to address the shortcomings of existing school uniform cleaning agents, we conducted targeted research and development and testing, which can effectively solve the problems in existing technologies. Summary of the Invention

[0011] The purpose of this invention is to address the shortcomings of existing technologies by proposing a composition formulation, preparation method, and application for cleaning school uniforms. This composition addresses the needs of cleaning school uniform fabrics and stains by combining surfactants, synergists, and functional additives to achieve efficient stain removal and gentle garment care. This will give the school uniform cleaning composition a better market prospect in the fields of laundry detergent, laundry soap, foaming powder, explosive salt, soap powder, and cleaning paste.

[0012] To achieve the above objectives, the present invention employs the following technical solution: a composition formulation for cleaning school uniforms, wherein the composition, calculated by mass percentage, comprises: 15-20 parts of alkyl glycosides 8-12 parts of cocamidopropyl betaine EDTA-disodium 1-3 parts 3-5 parts sodium citrate 2-4 parts potassium pyrophosphate 5-10 parts of emulsifier 1-2 parts of polyhexamethylene biguanide hydrochloride Tea tree essential oil 0.5-1.5 parts Stabilizer 0.1-0.3 parts Solvent balance.

[0013] As a further description of the above technical solution: the stabilizer is xanthan gum, and the solvent is deionized water.

[0014] A composition formulation for cleaning school uniforms, said composition comprising, by weight percentage: 18 parts of alkyl glycosides 10 parts of cocamidopropyl betaine 2 parts of EDTA-disodium 4 parts sodium citrate 3 parts potassium pyrophosphate 8 parts emulsifier 1.5 parts of polyhexamethylene biguanide hydrochloride 1 part tea tree essential oil 0.2 parts xanthan gum Deionized water balance.

[0015] As a further description of the above technical solution: the emulsifying and decomposing agent is a complex enzyme and polyethylene glycol 400 used to assist emulsification and stabilize enzyme activity, wherein the complex enzyme is one or more of protease, lipase and / or cellulase.

[0016] As a further description of the above technical solution: the composition formulation for cleaning school uniforms also contains propylene glycol, glycerin and sodium carboxymethyl cellulose.

[0017] As a further description of the above technical solution: the composition formulation for cleaning school uniforms also contains sec-butanol, dipropylene glycol methyl ether, potassium pyrophosphate, N-methylpyrrolidone, and anionic surfactant.

[0018] A method for preparing a composition for cleaning school uniforms, comprising the following steps: S1: Add the prescribed amount of deionized water to the reaction vessel, turn on the stirring and set the speed to 300 r / min, and the temperature to 20-25℃; S2: Add alkyl glycoside and cocamidopropyl betaine in sequence, stir for 15 minutes until completely transparent and without layering; S3: Add EDTA-disodium, sodium citrate, potassium pyrophosphate, and polyethylene glycol 400 in sequence, adjust the stirring speed to 400 r / min, and continue stirring for 10 minutes to ensure that the solid components are completely dissolved; S4: Use a temperature control device to lower the system temperature to below 35℃, and monitor it in real time with a thermometer. Then add the compound enzyme, polyhexamethylene biguanide hydrochloride, and tea tree oil. Reduce the stirring speed to 350r / min and stir for 5 minutes.

[0019] S5: Add xanthan gum, adjust the stirring speed to 500 r / min, and stir for 8 minutes until the solution is uniformly viscous and free of particle sediment. S6: Stop stirring, take samples to test pH value and clarity, and after passing the tests, dispense into finished product containers.

[0020] Application of a composition formulation for cleaning school uniforms, comprising the aforementioned composition, wherein the composition is added to laundry detergent, laundry soap, foaming powder, blasting salt, or soap powder for cleaning school uniforms.

[0021] Application of a school uniform cleaning composition formulation comprising the school uniform cleaning composition, wherein the school uniform cleaning composition is added to a school uniform shoe cleaning paste.

[0022] Due to the adoption of the above technical solution, the beneficial effects achieved by this invention are: (1) The composition formula for cleaning school uniforms provided by the present invention can remove more than 95% of hot pot oil stains, such as grease and other residues, which is 15%-20% better than traditional formulas. Moreover, the mesh surface does not deform, the fleece does not clump, and the leather does not harden after washing, thus solving the problem of fabric aging after washing with existing formulas. (2) The composition formula for cleaning school uniforms provided by the present invention can remove grass stains and fruit stains without leaving any residue after cleaning, without the need for secondary bleaching, and remove oil stains from the fabric without oil marks after cleaning, and does not affect the breathability of fabrics such as mesh fabric for school uniform sports pants. (3) The composition formula for cleaning school uniforms provided by the present invention can prevent pure cotton school uniforms from turning yellow or deforming after washing, and maintain their original shape after multiple washes. The amount of enzyme preparation is much lower than that in the prior art, which can reduce costs and reduce the risk of residue. (4) The composition formula for cleaning school uniforms provided by the present invention can make the school uniforms free of odor residue after washing, and the bactericidal effect lasts for 48 hours, which can effectively reduce the risk of cross-infection on campus. (5) The composition formula for cleaning school uniforms provided by the present invention can make people with sensitive skin feel no stinging sensation when hand washing; (6) The composition formula for cleaning school uniforms provided by the present invention can extend the shelf life of the formula to 18 months, without clumping or layering during storage, dissolving rapidly after dilution, and leaving no sediment residue when hand-washed, machine-washed, or brushed with a shoe washing machine. Detailed Implementation

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] The present invention will be described in detail with reference to the following embodiments: Example 1

[0025] A composition formulation for cleaning school uniforms, said composition comprising, by weight percentage: 15-20 parts of alkyl glycosides 8-12 parts of cocamidopropyl betaine EDTA-disodium 1-3 parts 3-5 parts sodium citrate 2-4 parts potassium pyrophosphate 5-10 parts of emulsifier 1-2 parts of polyhexamethylene biguanide hydrochloride Tea tree essential oil 0.5-1.5 parts Stabilizer 0.1-0.3 parts Solvent balance.

[0026] The emulsifying agent is a complex enzyme and polyethylene glycol 400 used to assist emulsification and stabilize enzyme activity. The complex enzyme is one or more of protease, lipase and / or cellulase, which can bring the enzyme activity of the composition to peak and decompose various types of stains.

[0027] Surfactants play a crucial role in cleaning detergents. However, existing detergents for school uniform fabrics often use sodium dodecylbenzene sulfonate and sodium fatty alcohol polyoxyethylene ether sulfate as surfactants. While these offer strong cleaning power, they are also highly irritating and can easily damage delicate fabrics such as fleece and mesh. This invention, through research, utilizes alkyl glycosides and cocamidopropyl betaine. Alkyl glycosides are derived from natural plants and have a biodegradability rate >98%, making them non-corrosive to all school uniform fabrics, including pure cotton, PU, ​​and leather. Cocamidopropyl betaine is an amphoteric surfactant that enhances the cleaning power of APG while maintaining a stable pH in the formula, preventing damage to hands during hand washing and fabric during machine washing.

[0028] Our removal rate of hot pot oil stains is over 95%, which is better than the 15%-20% of traditional formulas. After washing, the mesh does not deform, the velvet does not clump, and the leather does not harden, solving the problem of fabric aging after washing with existing formulas.

[0029] 1-3 parts of EDTA-disodium, 3-5 parts of sodium citrate, and 2-4 parts of potassium pyrophosphate are used as synergists. EDTA-disodium can chelate calcium and magnesium ions in water, preventing the reduction in cleaning power and the formation of residual scale caused by hard water. Sodium citrate can decompose grass stains and fruit and tea stains, solving the problem of recurring pigment stains in existing formulas. Potassium pyrophosphate targets mineral oils such as engine oil, enhancing emulsification by disrupting the oil film structure, allowing oil stains to completely detach from canvas and synthetic leather surfaces. Therefore, the addition of these three components enables the composition to remove grass and fruit stains without residue, eliminating the need for secondary bleaching; and to remove oil stains without leaving oil marks on the fabric, without affecting the breathability of the mesh fabric of school uniforms and sports pants, making it highly practical.

[0030] Existing technologies often use fragrances and quaternary ammonium salts to enhance odor and kill bacteria, which can easily trigger allergies. Furthermore, because they primarily mask or remove sweat and hot pot odors, the results are not ideal. Additionally, quaternary ammonium salts can irritate suede and leather. The formula in this invention, however, uses tea tree oil and polyhexamethylene biguanide hydrochloride to enhance odor and kill bacteria.

[0031] Polyhexamethylene biguanide hydrochloride provides broad-spectrum sterilization, achieving a 99.9% sterilization rate against common bacteria in school uniforms such as Escherichia coli and Staphylococcus aureus. It is non-irritating and leaves no residue on any fabric. Tea tree oil, on the other hand, breaks down odor molecules rather than masking or removing sweat or hot pot smells, leaving a natural, light fragrance and avoiding fragrance allergy issues. During use, washed school uniforms are odor-free, and the sterilization effect lasts for 48 hours, reducing the risk of cross-infection on campus.

[0032] The formulation composition provided by this invention is not only suitable for pure cotton and canvas, but also for school uniform fabrics such as leather, mesh, and PU. It is non-corrosive, has a stain removal rate of more than 90% for various types of stains, requires no secondary cleaning, is non-irritating and leaves no residue, and integrates stain removal, sterilization, deodorization and garment protection. Example 2

[0033] 18 parts of alkyl glycosides 10 parts of cocamidopropyl betaine 2 parts of EDTA-disodium 4 parts sodium citrate 3 parts potassium pyrophosphate 8 parts emulsifier 1.5 parts of polyhexamethylene biguanide hydrochloride 1 part tea tree essential oil 0.2 parts xanthan gum Deionized water balance.

[0034] In this implementation, in order to better realize the advantages of the formulation described in this invention, we selected 18 parts of surfactant alkyl glycoside (APG-1214) and 10 parts of cocamidopropyl betaine (CAPB). Alkyl glycoside can take into account both detergency and biodegradability, and can gently protect the fabric while mainly removing dirt. Cocamidopropyl betaine can assist in removing dirt and adjust the pH to neutral.

[0035] In the synergist, 2 parts of EDTA-disodium are selected, which can chelate hard water sufficiently, improve the stability of stain removal, and do not increase the cost; 4 parts of sodium citrate are selected, which can efficiently decompose pigments, such as pigment stains, especially grass stains and fruit stains, and can achieve stain removal without residue; 3 parts of potassium pyrophosphate are selected, which can enhance the emulsifying power of mineral oils such as engine oil, and can enhance engine oil emulsification without affecting environmental protection.

[0036] The emulsifying agent contains a complex enzyme consisting of protease, lipase, and cellulase, with a total amount of 3 parts. This combination can achieve peak enzyme activity and decompose various types of stains, specifically targeting protein, grease, and fiber stains. Polyethylene glycol 400 is selected in 5 parts to completely stabilize enzyme activity and assist in emulsification.

[0037] In deodorizing and disinfecting agents: (1) 1.5 parts of polyhexamethylene biguanide hydrochloride (PHMB) were selected. It has broad-spectrum bactericidal activity, leaves no irritating residue, and can achieve a bactericidal rate of 99.9% without causing irritation. (2) The tea tree essential oil is preferably food-grade tea tree essential oil, with a content of 1 part, which can completely decompose the odor and produce a natural fragrance.

[0038] The stabilizer xanthan gum was selected at 0.2 parts, which has the advantage of providing a moderate system consistency and easy dissolution.

[0039] Add deionized water as a solvent to make up 100 parts, dissolve each component, adjust the concentration, and ensure that each component is evenly dispersed. Example 3

[0040] In this embodiment, the composition is added to school uniform laundry detergent at a rate of 20%-30%, with an optimal value of 25%, allowing for machine or hand washing. In practical applications, due to the need for a water-soluble PVA membrane with a thickness of 50-80 μm, the xanthan gum content in the composition is reduced to 0.1% to avoid excessive viscosity within the membrane system, which would affect the dissolution rate. Low-temperature infusion is required, with the temperature below 35°C. The composition is added before infusion to prevent high temperatures above 40°C from damaging the activity of the complex enzyme.

[0041] The specific ingredients are listed in Table 1 below.

[0042] .

[0043] To clearly illustrate the comparative advantages of the school uniform-specific laundry detergent containing 25% of the composition of this invention compared to ordinary children's laundry detergent, we conducted comparative experiments in four aspects: stain removal rate, fabric protection effect, gentleness, and sterilization and deodorization. We found that the school uniform-specific detergent containing 25% of the composition of this invention has significant advantages in the above four aspects. The specific comparison results are shown in Table 2 below: Among them, the sterilization rate was mainly tested against Escherichia coli and Staphylococcus aureus.

[0044] .

[0045] In a field test conducted by students and parents, our laundry detergent effectively removed sweat stains from the collar and hot pot oil stains from the cuffs of school uniforms in one wash. The white school uniforms did not turn yellow after washing, and there was no tightness when hand washing. The amount of detergent used was reduced by 1 / 3 compared to ordinary detergents.

[0046] During the manufacturing process, the composition is added before the laundry detergent is poured in to avoid high temperatures (>40℃) from damaging the activity of the compound enzyme. Example 4

[0047] In this embodiment, we provide a school uniform-specific laundry soap containing the school uniform cleaning composition of the present invention, which is more suitable for hand washing and for stubborn stains caused by students' daily clothing.

[0048] In this embodiment, the amount of school uniform cleaning composition added is 15%-25%, preferably 20%.

[0049] The remaining ingredients make up 80%, specifically: sodium fatty acid soap base for basic cleaning is preferably 60%, cocamide DEA for enhancing foam stability is preferably 5%, lanolin for enhancing hand care is preferably 5%, and the balance is deionized water, keeping the pH of the soap base ≤ 9.0, and the pH drops to 7.0 ± 0.3 after being compounded with the school uniform cleaning composition.

[0050] According to the soap base hardness test in the experiment, the soap base hardness is 45-50 Shore D. Therefore, increasing the amount of PEG-400 in the school uniform cleaning composition to 6% can reduce the hardness and brittleness of the soap base and avoid the problem of easy breakage when hand washing.

[0051] The specific parameters are shown in Table 3 below.

[0052] .

[0053] During preparation, the soap base is melted and then cooled to 40°C before being added to the composition. This avoids the high temperature from destroying the activity of the enzyme and polyhexamethylene biguanide hydrochloride (PHMB). At the same time, to ensure the uniformity of the system, it is kept at 35°C before molding.

[0054] In this embodiment, we conducted an efficacy experiment and comparison between the school uniform-specific laundry soap containing our school uniform cleaning composition and existing laundry soaps on the market, focusing on its effectiveness against stubborn stains, color protection of fabrics, hand washing experience, and compatibility with multiple fabrics. The results are shown in Table 4 below.

[0055] . Example 5

[0056] In this embodiment, we provide a special cream for school uniform shoes containing the cleaning composition of the present invention for the mesh, leather and canvas shoes commonly worn by students. For canvas school uniform shoes and mesh sports shoes for primary and secondary school students, actual tests showed that after cleaning, the ventilation holes of the mesh surface were not blocked, the leather surface did not turn white, and the repurchase rate reached 65%.

[0057] The amount of the school uniform cleaning composition added is 30%-40%, preferably 35%. Other added ingredients include 20% petrolatum to help the paste form, 15% stearic acid for thickening, 10% lanolin for leather protection, 0.5% silane coupling agent to enhance adhesion to the mesh fibers and prevent the ingredients from being lost during washing, and the remainder is deionized water.

[0058] Because the hardness of the cleaning paste needs to be controlled to 25-30 at 25℃. The xanthan gum content in the composition is maintained at 0.2% to work synergistically with petrolatum, ensuring that the paste does not easily separate.

[0059] The specific ingredients are shown in Table 5 below.

[0060] .

[0061] To clearly illustrate the advantages of this invention, we conducted tests and comparisons between the school uniform shoe cleaning paste containing the composition of this invention and ordinary shoe cleaning pastes on the market, focusing on four aspects: shoe surface cleaning and protection, shoe material compatibility, odor removal, and sterilization. We found that the school uniform shoe cleaning paste containing the composition of this invention has the following four advantages: (1) For the ventilation holes of the mesh upper and the leather upper of school uniform shoes, it takes into account both stain removal and shape protection; (2) Solve the problem of ordinary shoe cleaning cream damaging shoes and extend the service life of school uniform shoes; (3) Reduce the odor when students wear shoes; (4) Reduce the risk of cross-infection of athlete's foot.

[0062] The specific comparison results are shown in Table 6 below.

[0063] . Example 6

[0064] In this embodiment, we provide a special soaking and washing powder for school uniforms, which uses an immersion cleaning method and is more suitable for cleaning and using boarding school uniforms or large school uniforms. In this formulation, the amount of the school uniform cleaning composition studied in this invention added is 25%-35%, preferably 28%, and the complex enzymes and tea tree oil in the composition are microencapsulated, and xanthan gum in the composition is replaced with 0.5% hydroxypropyl methylcellulose (HPMC), which can improve powder flowability and prevent clumping. The other components of the special soaking and washing powder for school uniforms are added as follows: Sodium sulfate 40%, sodium carboxymethyl cellulose 5%, sodium tripolyphosphate for chelating hard water 8%, low-irritant sodium dodecylbenzene sulfonate (LAS) 6% to enhance powder detergency, and silica 3% as an anti-caking agent to prevent storage clumping.

[0065] The specific ingredients are listed in Table 7 below.

[0066] .

[0067] To better suit the production of school uniform-specific foaming and washing powder, we have made adjustments to the formula of the above-mentioned school uniform cleaning composition, mainly in the following two aspects: 1. Microencapsulation of complex enzymes and tea tree oil in the composition; 2. Xanthan gum in the composition is replaced with 0.5% hydroxypropyl methylcellulose (HPMC).

[0068] Because students need to soak and wash large school uniforms, such as cotton jackets and polyester sweatpants, weekly, a batch of special detergent powder for school uniforms was ordered from a boarding school. In use, the detergent powder is dissolved in water at a ratio of 1:50, soaked in 40℃ warm water for 30 minutes, and then rinsed directly. This process achieves the following beneficial effects: 1. Soaking improves stain removal efficiency and reduces students' workload; 2. Solves the problem of ordinary detergents damaging clothes when soaking, and is compatible with various school uniform fabrics, such as cotton, mesh, and fleece; 3. Suitable for dormitories without hot water in winter; cold water can achieve efficient cleaning. 4. Suitable for bulk purchasing and storage on campus, reducing waste.

[0069] To more clearly illustrate the comparative advantages of our school uniform-specific soaking and washing powder with added composition compared to ordinary soaking and washing powder, we compared aspects such as soaking and stain removal power, fabric compatibility, low-temperature applicability, and storage stability, as detailed in Table 8 below.

[0070] . Example 7

[0071] In this embodiment, we provide a special bleaching salt for school uniforms, suitable for yellowing and worn-out school uniforms. In this formulation, the amount of the school uniform cleaning composition studied in this invention added is 18%-25%, and the components in the composition are adjusted as follows: (1) Tea tree oil is replaced with menthol, with a specific content of 0.8%. Menthol is solid, which can effectively prevent volatilization and enhance the deodorizing effect.

[0072] (2) The complex enzyme is encapsulated in a double layer of sodium alginate and chitosan microcapsules to prevent oxidation by sodium percarbonate; (3) The amount of polyhexamethylene biguanide hydrochloride (PHMB) was reduced to 1.2% to avoid reaction with peroxides.

[0073] Meanwhile, the other ingredients added to the school uniform-specific explosive salt are: Sodium percarbonate at 50% is a core bleaching ingredient. Its content is lower than that of ordinary explosive salt, which can achieve a bleaching effect without damaging the fabric. Sodium carbonate 10% is used to adjust the pH and also to assist in bleaching; 5% disodium EDTA chelates metal ions to prevent uneven bleaching; 3% citric acid controls the decomposition rate of sodium percarbonate. 2% sodium aluminum silicate anti-caking agent to prevent clumping.

[0074] The specific ingredients are listed in Table 9 below.

[0075] .

[0076] For school logistics staff cleaning seasonally, storing yellowed school uniforms for six months, or parents refurbishing old school uniforms (such as graduation uniforms), the following method is used: dissolve school uniform-specific explosive salt in water at a ratio of 1:30, soak in 40℃ warm water for 60 minutes, and then rinse. In a test on refurbishing 200 white cotton school uniforms at a primary school, we found that the yellowing removal rate reached 90%, and the school uniforms did not become brittle after washing, and the printed school badges did not fade. This method reduces costs by 60% compared to sending the uniforms to dry cleaning.

[0077] Therefore, the school uniform-specific explosive salt containing the formulation composition of the present invention has the following advantages as shown in Table 10: . Example 8

[0078] For everyday household cleaning of school uniform shirts, knitted vests, and athletic shorts, we offer a special soap powder for school uniforms. The optimal addition amount for the school uniform cleaning composition is 25%, with 20%-30% recommended. Simultaneously, the CAPB dosage is increased to 12%, working synergistically with the soap base to raise the pH to 7.0-7.5. The PEG-400 in the composition is replaced with solid polyethylene glycol 6000 at a content of 3%, which improves powder solubility, prevents clumping in cold water, and avoids damage to clothing from the alkalinity of the soap base.

[0079] Other ingredients include: Sodium fatty acid soap powder, with a content of 40%, can achieve basic cleaning and adjust the gentleness of the entire formula; Fatty alcohol polyoxyethylene ether AEO-9, with a content of 8%, can enhance low-temperature solubility; Sodium sulfate, with a content of 15%, functions as a filler and a solubilizer. Glycerin, 5%, can provide hand care and resistance to hard water; The anti-caking agent is talc powder, with a content of 3%, which can effectively prevent clumping; The fragrance is food-grade lemon scent, with a content of 0.5%, which can effectively mask the smell of soap base.

[0080] For daily household washing of school uniform shirts, knitted vests, and athletic shorts, use 10g / 500ml of water for hand washing and 20g / 5kg of clothing for machine washing. Based on tests conducted by 50 parents, we found that hand washing school uniform collar sweat stains only requires 30 seconds of rubbing to remove them, and two rinses leave no residue. Knitted school uniforms do not deform after washing, and the amount of soap used is reduced by 20% compared to ordinary soap powder, resulting in a 15% reduction in monthly laundry costs.

[0081] The specific ingredients are listed in Table 11 below.

[0082] .

[0083] A comparative advantage test was conducted on the school uniform-specific soap powder containing 25% of the composition and ordinary soap powder. The school uniform-specific soap powder with the formulation composition of this invention has advantages as shown in Table 12 in terms of detergency, skin moisture content after hand washing, water-saving performance in machine washing and rinsing, and damage to clothing fabrics after washing various fabrics.

[0084] .

[0085] In Examples 3-8 above, the compositions described are all based on the composition formulation described in Example 2, with additions and improvements. Example 9

[0086] A method for preparing a composition for cleaning school uniforms, comprising the following steps: Step 1: Add the prescribed amount of deionized water to the reaction vessel, start stirring at a speed of 300 r / min, and maintain the temperature at 20-25℃. This will provide a dissolving carrier for the subsequent components and prevent the solid raw materials from directly mixing and clumping.

[0087] Step 2: Add alkyl glycosides and cocamidopropyl betaine in sequence, stirring for 15 minutes until the solution is completely clear and without separation. In this step, alkyl glycosides and cocamidopropyl betaine should be added slowly to avoid rapid pouring which will generate a lot of foam and affect the mixing of subsequent ingredients.

[0088] Step 3: Add EDTA-disodium, sodium citrate, potassium pyrophosphate, and polyethylene glycol 400 in sequence. Adjust the stirring speed to 400 rpm and stir continuously for 10 minutes to ensure that the solid components are completely dissolved.

[0089] Polyethylene glycol 400 needs to be mixed with other synergists to protect the subsequently added complex enzymes and prevent enzyme molecules from being deactivated by direct contact with hard water ions.

[0090] Step 4: Use a temperature control device to lower the temperature of the composition to below 35°C and monitor it in real time with a thermometer. Add the compound enzyme, polyhexamethylene biguanide hydrochloride, and tea tree oil. Reduce the stirring speed to 350 r / min and stir for 5 minutes.

[0091] There are two points to note in this step: The temperature needs to be monitored in real time with a thermometer and must be kept below 35℃; otherwise, the compound enzyme will be deactivated due to high temperature, resulting in a decrease in detergency. Add the tea tree oil last to avoid prolonged stirring which would cause the aroma to evaporate.

[0092] Step 5: Add xanthan gum, adjust the stirring speed to 500 rpm, and stir for 8 minutes until the composition is uniformly thick and free of particle sediment. If the system is too thick, a small amount of deionized water can be added, but not exceeding 1% of the total weight, to adjust the consistency.

[0093] When adding xanthan gum, the stirring speed needs to be increased to 500 r / min, otherwise fish-eye-shaped lumps will easily form and cannot be evenly dispersed; other steps should be kept at medium to low speed to avoid generating too much foam that is difficult to eliminate.

[0094] Step 6: After stopping stirring, take a sample to test the pH value to ensure that the pH value is between 6.5 and 7.0, and that the clarity is free of stratification and sedimentation.

[0095] Step 7: After passing the inspection, the product is packaged into finished product containers.

[0096] The deionized water used in this invention must meet the Class I water standard of GB / T 6682-2022 "Specifications and Test Methods for Water Used in Analytical Laboratories" to avoid impurities in the water, such as chloride ions and heavy metals, affecting the stability of the bactericidal component PHMB.

[0097] Therefore, the composition for cleaning school uniforms provided by this invention can meet the needs of cleaning school uniform fabrics and stains by compounding surfactants, synergists and functional additives, achieving efficient stain removal and gentle clothing protection, giving the composition for cleaning school uniforms a better market prospect in the fields of laundry detergent, laundry soap, foaming powder, explosive salt, soap powder and cleaning paste.

[0098] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A composition formulation for school uniform cleaning, characterized by, The composition comprises, in terms of mass percentage: Alkyl glycoside 15-20 parts Cocamidopropyl betaine 8-12 parts EDTA-disodium 1-3 parts Sodium citrate 3-5 parts Potassium pyrophosphate 2-4 parts Emulsifying and decomposing agent 5-10 parts Polyhexamethylene biguanide hydrochloride 1-2 parts Tea tree essential oil 0.5-1.5 parts Stabilizer 0.1-0.3 parts Solvent balance.

2. The composition formulation for school uniform cleaning according to claim 1, wherein The stabilizer is xanthan gum, and the solvent is deionized water.

3. The composition formula for school uniform cleaning according to claim 1, wherein, Alkyl glycoside 18 parts Cocamidopropyl betaine 10 parts EDTA-disodium 2 parts Sodium citrate 4 parts Potassium pyrophosphate 3 parts Emulsifying and decomposing agent 8 parts Polyhexamethylene biguanide hydrochloride 1.5 parts Tea tree essential oil 1 part Xanthan gum 0.2 parts Deionized water balance.

4. The composition formulation for school uniform cleaning according to claim 1, wherein The emulsifying and decomposing agent is a composite enzyme and polyethylene glycol 400 for assisting emulsification and stabilizing enzyme activity, and the composite enzyme is one or more of protease, lipase and / or cellulase.

5. The composition formulation for school uniform cleaning according to claim 1, wherein Propylene glycol, glycerol and sodium carboxymethyl cellulose are further added to the composition formula for school uniform cleaning.

6. The composition formulation for school uniform cleaning according to claim 1, wherein Secondary butanol, dipropylene glycol methyl ether, potassium pyrophosphate, N-methyl pyrrolidone and anionic surfactant are further added to the composition formula for school uniform cleaning.

7. A method for preparing a school uniform cleaning composition, for preparing a school uniform cleaning composition according to any one of claims 1 to 6, characterized in that, The preparation method of the composition for school uniform cleaning comprises the following operation steps: S1: Add the formula amount of deionized water to the reaction container, start stirring, set the speed to 300 r / min, and maintain the temperature at 20-25℃; S2: Add alkyl glycoside and cocamidopropyl betaine in sequence, stir for 15 minutes until completely transparent and no stratification; S3: Add EDTA-disodium, sodium citrate, potassium pyrophosphate and polyethylene glycol 400 in sequence, adjust the stirring speed to 400 r / min, and continue stirring for 10 minutes to ensure complete dissolution of the solid components; S4: Reduce the system temperature to below 35℃ with a temperature control device, and monitor the temperature in real time with a thermometer, then add the composite enzyme, polyhexamethylene biguanide hydrochloride and tea tree essential oil, reduce the stirring speed to 350 r / min, and stir for 5 minutes; S5: Add xanthan gum, adjust the stirring speed to 500 r / min, and stir for 8 minutes until the solution is uniform and thick without particle precipitation; S6: Stop stirring, take a sample to detect the pH value and clarity, and after passing the detection, pack the product into a container.

8. Use of a school uniform cleaning composition formulation comprising the school uniform cleaning composition of any one of claims 1-6, characterized in that, The composition for school uniform cleaning is added to laundry detergent, laundry soap, soaking powder, explosive salt and soap powder for school uniform cleaning.

9. Use of a school uniform cleaning composition formulation comprising the school uniform cleaning composition of any one of claims 1-6, characterized in that, The composition for school uniform cleaning is added to cleaning paste for school uniform shoes.