A stain cleaning composition and preparation method thereof

Abstract

The invention discloses a stain cleaning composition and a preparation method thereof, and is mainly related to the technical field of detergent compositions containing surfactants. Its preparation method is also provided: trehalose and N-aminoethyl-3-aminopropylmethyldimethoxysilane are added to water and stirred for 0.5-1 hours, warmed to 80-90°C and stirred for 3-5 hours, concentrated and dried at 90-110°C, ground and sieved, and modified trehalose is obtained for standby use; glutaraldehyde and 2-aminoethylsulfonamide are weighed and added to anhydrous ethanol, refluxed at 80-90°C for 1-2 hours, acetic acid and modified trehalose are added and continued to be stirred for 2-4 hours, concentrated and dried at 45-55°C, ground and sieved, and composite trehalose is obtained; surfactant, composite trehalose, sodium hexametaphosphate, and polyvinyl alcohol are added to water, stirred at room temperature for 20-60 minutes, and the stain cleaning composition is obtained. Compared with the prior art, the present invention can effectively remove stains on clothing, and will not cause any damage to the clothing material, and can also alleviate the snagging phenomenon of fabrics.

Description

Technical Field

[0001] The present invention relates to the technical field of detergent compositions containing surfactants, and in particular to a stain cleaning composition and a preparation method thereof. Background Art

[0002] Stain cleaning compositions can remove a variety of stains and can be widely used in the fields of textiles, clothing cleaning, household cleaning, and industrial cleaning. Stain cleaning compositions usually contain surfactants to reduce the surface tension of water and enhance the wetting and penetration of stains; enzyme aids can also be added to improve the removal efficiency of specific types of stains; and auxiliary ingredients such as thickeners, fragrances, and preservatives to improve product performance and user experience. With the advancement of technology, the research and development of stain cleaning agents has made significant progress, including the development of more environmentally friendly, efficient, targeted, and safer products.

[0003] Stain cleaning compositions often need to protect the material of clothing from damage while ensuring effective removal of stains from clothing. In the prior art, the stain removal ability of detergents can be enhanced by adding enzyme preparations. Some enzyme preparations can specifically decompose different types of stains without damaging clothing fibers; the use of surfactants and additives from natural sources is not only environmentally friendly, but also safer for sensitive fibers such as wool and silk; the selection of pH-sensitive or temperature-responsive cleaning components further improves the adaptability and effectiveness of detergents, ensuring optimal performance under different washing conditions; adjusting the active formula according to the washing conditions further improves the cleaning efficiency and clothing protection capabilities. These innovations enable detergents to provide a deeper cleaning effect without damaging clothing, and together promote the development of stain cleaning compositions in a safer, more practical, and more environmentally friendly direction, meeting the dual needs of modern consumers for efficient cleaning and clothing care.

[0004] CN117586835A discloses a strippable, wash-free cleaning composition and its preparation method and application. The strippable, wash-free cleaning composition includes the following components by weight: 0.8-5 parts of film former, 10-30 parts of solvent, 0.05-5 parts of surfactant, 1-15 parts of adsorbent, and 0-5 parts of softener; wherein the solvent is composed of a first solvent and a second solvent; the first solvent is water, and the second solvent is selected from any one of a monohydric alcohol solvent, an alcohol ether solvent, or a hydrocarbon amide solvent, or a combination of at least two. The strippable, wash-free cleaning composition of the invention is suitable for cleaning the surface oil stains of down jackets made of high-density polyester taffeta or high-density nylon spun yarn, and is suitable for various emergency occasions. After being applied to the oil stains, it can be torn off and removed. After use, it can remove the oily stains on the surface of the down jacket without rinsing with water or mechanical friction. This invention patent is mainly used for cleaning the surface oil stains of down jackets, and does not include cleaning of other common stains in life.

[0005] CN114058451A discloses a food-grade aerobic cleaner and a preparation method thereof. The food-grade aerobic cleaner is prepared from the following raw materials, which include by weight: 70-85 parts of sodium percarbonate; 10-15 parts of sodium gluconate; 2-8 parts of citric acid and 0.2-1 parts of chelating agent. The beneficial effects of the invention are as follows: the food-grade aerobic cleaner of the invention can release active oxygen after being dissolved in water, and can effectively remove stubborn stains such as fruit stains, grass stains, red wine stains, iodine stains, ink stains, various oil stains, etc. that are difficult to remove by ordinary detergents on the market; at the same time, the active oxygen has a bactericidal effect, which can kill common pathogens such as Escherichia coli and Staphylococcus aureus; oxygen can effectively bleach fabrics and improve the problems of yellowing, graying, and dull colors of fabrics. The invention patent provides a food-grade cleaner with high safety and antibacterial effect, which can improve the problems of yellowing, graying, and dull colors of fabrics, and can also remove wine stains, excluding tea stains, coffee stains, and other daily stains. Summary of the invention

[0006] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to provide a stain cleaner composition, which can effectively remove stains on clothes without causing any damage to the clothing material and can also alleviate the snagging phenomenon of the fabric.

[0007] To achieve the above object, the present invention provides a stain cleaning composition and a preparation method thereof.

[0008] A method for preparing a stain cleaning composition comprises the following steps:

[0009] (1) Add trehalose and N-aminoethyl-3-aminopropylmethyldimethoxysilane to water and stir for 0.5-1 hour, heat to 80-90°C and stir for 3-5 hours, concentrate and dry at 90-110°C, grind and sieve to obtain modified trehalose for later use;

[0010] (2) Weigh glutaraldehyde and 2-aminoethylsulfonamide, add them to anhydrous ethanol, reflux at 80-90° C. for 1-2 hours, add acetic acid and modified trehalose, and continue stirring for 2-4 hours, concentrate and dry at 45-55° C., grind and sieve to obtain composite trehalose;

[0011] (3) Add surfactant, complex trehalose, sodium hexametaphosphate and polyvinyl alcohol into water and stir at room temperature for 20-60 minutes to obtain the stain cleaning composition.

[0012] The grinding and sieving in the step (1) is performed using a 100-120 mesh sieve.

[0013] In the step (1), the weight ratio of trehalose, N-aminoethyl-3-aminopropylmethyldimethoxysilane and water is 5-8:1-2:60-100.

[0014] In the step (2), the weight ratio of glutaraldehyde, 2-aminoethylsulfonamide, anhydrous ethanol, acetic acid and modified trehalose is 2-4: 4-6: 140-160: 0.01-0.02: 5-8.

[0015] The grinding and sieving in the step (2) is performed using a 100-120 mesh sieve.

[0016] In the step (3), the weight ratio of the surfactant, the composite trehalose, the sodium hexametaphosphate, the polyvinyl alcohol and the water is 8-12:8-15:1-2:6-12:80-120.

[0017] In the step (3), the surfactant is a mixture of any one or more of cocamidopropyl betaine, sodium dodecylbenzene sulfonate, sodium cocoyl isethionate, fatty alcohol polyoxyethylene ether, and sodium stearate.

[0018] As a chelating agent, sodium hexametaphosphate can bind to calcium and magnesium ions in water to prevent metal ions from reacting with other ingredients in detergents, thereby maintaining the cleaning effect of detergents and preventing the formation of scale. Polyvinyl alcohol is mainly used as a thickener and protective agent, providing a protective film for clothes during the washing process to reduce mechanical damage, etc. Cocamidopropyl betaine is an amphoteric surfactant that is widely used in cleaning detergents due to its mildness and good biocompatibility. It can effectively reduce the surface tension of water and enhance the wetting ability of detergents on clothes, thereby improving the decontamination efficiency. It can also stabilize foam and improve the washing experience. As an anionic surfactant, sodium dodecylbenzene sulfonate plays a major decontamination role in detergents. It can strongly interact with grease stains, emulsify the stains through emulsification, and disperse them in water for cleaning and washing. Sodium cocoyl isethionate surfactant has excellent decontamination and emulsification capabilities while maintaining mildness, and is particularly suitable for cleaning and maintenance of underwear. Fatty alcohol polyoxyethylene ether is a nonionic surfactant, which plays the role of stabilizer and wetting agent in detergent, helps the stain cleaning composition to better wet the surface of clothing, improves the decontamination efficiency, and prevents stains from reattaching to clothing, making the washing effect better. Sodium stearate can provide rich foam and good decontamination ability, which helps to remove grease and dirt during the washing process. Through the compounding of different surfactants, the characteristics of different types of surfactants can be combined to reduce the surface tension of water, enhance wetting and penetration, and form micelles to remove stains, so as to achieve better stain cleaning effect and improve overall performance, including enhancing detergency, reducing foam, improving stability and adaptability. Trehalose is a natural disaccharide with very stable properties. The present invention modifies it with amino groups and then reacts with glutaraldehyde and 2-aminoethylsulfonamide, which enhances the wettability of the application, alleviates fiber damage and snagging, and improves the durability and softness of clothing; promotes the uniform coverage and deep penetration of the stain cleaning composition on the surface of clothing, thereby more effectively contacting and loosening stains, which helps to improve washing efficiency.

[0019] Beneficial effects of the present invention:

[0020] Compared with the prior art, the stain cleaning composition of the present invention can combine the characteristics of different types of surfactants through the compounding of different surfactants, reduce the surface tension of water, enhance wetting and penetration, and form micelles to remove stains, so as to achieve better stain cleaning effect and improve overall performance, including enhancing detergency, reducing foam, improving stability and adaptability, etc. Sodium hexametaphosphate, polyvinyl alcohol, and composite trehalose are also added, and the synergistic effect of each component can effectively remove stains on clothes and protect clothes, and can also alleviate the phenomenon of fabric snagging. DETAILED DESCRIPTION

[0021] The parameters of the specific chemical substances used in the examples are from the following sources:

[0022] Cocamidopropyl Betaine: CAS number is 61789-40-0.

[0023] Sodium Cocoyl Isethionate: CAS number is 58969-27-0.

[0024] Fatty alcohol polyoxyethylene ether: CAS number is 68213-23-0.

[0025] N-Aminoethyl-3-aminopropylmethyldimethoxysilane: CAS number is 3069-29-2.

[0026] 2-Aminoethylsulfonamide: CAS number is 4378-70-5.

[0027] Trehalose: The manufacturer is Wuhan Dingcheng Biochemical Reagent Co., Ltd., model number is TL709.

[0028] Polyvinyl alcohol: The manufacturer is Guangzhou Dachuang Trading Co., Ltd., model number is 8805.

[0029] Chitosan: CAS number is 9012-76-4.

[0030] Lactobionic acid: CAS number is 96-82-2, the manufacturer is Shaanxi Tianzhicheng Biotechnology Co., Ltd., and the product number is TZC-002102.

[0031] Avocado butter: The manufacturer is Shaanxi Tianzhicheng Biotechnology Co., Ltd., the product number is TZC-001389.

[0032] Example 1

[0033] A method for preparing a stain cleaning composition comprises the following steps:

[0034] (1) Add 6 g of trehalose and 1 g of N-aminoethyl-3-aminopropylmethyldimethoxysilane to 80 g of water and stir for 0.5 hour, heat to 80°C and stir for 4 hours, concentrate and dry at 100°C, grind through a 100-mesh sieve to obtain modified trehalose, and set aside;

[0035] (2) Weigh 3 g of glutaraldehyde and 5 g of 2-aminoethylsulfonamide and add them to 150 g of anhydrous ethanol. Reflux at 90°C for 1 hour. Add 0.01 g of acetic acid and 6 g of modified trehalose and continue stirring for 3 hours. Concentrate and dry at 50°C, grind through a 100-mesh sieve to obtain composite trehalose.

[0036] (3) 4 g of cocamidopropyl betaine, 4 g of sodium cocoyl isethionate, 2 g of fatty alcohol polyoxyethylene ether, 10 g of complex trehalose, 2 g of sodium hexametaphosphate, and 10 g of polyvinyl alcohol were added to 100 g of water and stirred at room temperature for 40 minutes to obtain the stain cleaning composition.

[0037] Example 2

[0038] A method for preparing a stain cleaning composition comprises the following steps:

[0039] 4 g of cocamidopropyl betaine, 4 g of sodium cocoyl isethionate, 2 g of fatty alcohol polyoxyethylene ether, 10 g of trehalose, 2 g of sodium hexametaphosphate and 10 g of polyvinyl alcohol were added to 100 g of water and stirred at room temperature for 40 minutes to obtain the stain cleaning composition.

[0040] Comparative Example 1

[0041] A method for preparing a stain cleaning composition comprises the following steps:

[0042] 4 g of cocamidopropyl betaine, 4 g of sodium cocoyl isethionate, 2 g of fatty alcohol polyoxyethylene ether, 10 g of chitosan, 2 g of sodium hexametaphosphate and 10 g of polyvinyl alcohol were added to 100 g of water and stirred at room temperature for 40 minutes to obtain the stain cleaning composition.

[0043] Comparative Example 2

[0044] A method for preparing a stain cleaning composition comprises the following steps:

[0045] 4 g of cocamidopropyl betaine, 4 g of sodium cocoyl isethionate, 2 g of fatty alcohol polyoxyethylene ether, 10 g of lactobionic acid, 2 g of sodium hexametaphosphate and 10 g of polyvinyl alcohol were added to 100 g of water and stirred at room temperature for 40 minutes to obtain the stain cleaning composition.

[0046] Comparative Example 3

[0047] A method for preparing a stain cleaning composition comprises the following steps:

[0048] 4 g of cocamidopropyl betaine, 4 g of sodium cocoyl isethionate, 2 g of fatty alcohol polyoxyethylene ether, 10 g of avocado butter, 2 g of sodium hexametaphosphate and 10 g of polyvinyl alcohol were added to 100 g of water and stirred at room temperature for 40 minutes to obtain the stain cleaning composition.

[0049] Example 3

[0050] A method for preparing a stain cleaning composition comprises the following steps:

[0051] 4 g of cocamidopropyl betaine, 4 g of sodium cocoyl isethionate, 2 g of fatty alcohol polyoxyethylene ether, 2 g of sodium hexametaphosphate and 10 g of polyvinyl alcohol were added to 100 g of water and stirred at room temperature for 40 minutes to obtain the stain cleaning composition.

[0052] Test Example 1

[0053] Detergency test

[0054] The stain removal power of the stain cleaning composition obtained by the preparation method of Examples 1-3 and Comparative Examples 1-3 and the commercially available stain cleaning composition were tested. The ingredients of the commercially available stain composition product are: cocamidopropyl betaine, disodium EDTA, sodium bicarbonate, laureth-7, sodium laureth sulfate, and the brand is Jakehoe. The test refers to the national standard GB / T13174-2021 "Determination of the detergency and cycle washing performance of detergents for clothing". Coffee, red wine, and black tea, common stains in life, were used as test stains. Six test pieces were prepared in each group, model JB-00, cut into squares of 8cm×8cm, and each group contained 4 stain pieces of this type of stain. The test pieces of the same category were stacked, and the whiteness values ​​before and after washing were read one by one using a whiteness meter at 457nm. The whiteness before washing was measured at two points on each side of the test piece, and the average of the four measurements was the whiteness F1 of the test piece before washing; the whiteness after washing was also measured, and the average of the four measurements was the whiteness F2 of the test piece after washing. The whiteness retention values ​​of Examples 1-3 and commercially available stain compositions were calculated. The higher the whiteness retention value, the better the removal effect of the stain removal composition of the embodiment on the stain of this type was, as summarized in Table 1.

[0055] Table 1 Detergency test

[0056]

[0057] From the comparison of Test Example 1, it can be seen that the stain cleaning composition prepared by the present invention is superior to Comparative Examples 1-3 and commercial products in removing coffee, red wine and black tea stains. The ingredients of the commercial product are cocamidopropyl betaine, disodium EDTA, sodium bicarbonate, laureth-7, and sodium laureth sulfate, wherein the cocamidopropyl betaine, laureth-7, and sodium laureth sulfate surfactants work together to provide mild stain cleaning power, disodium EDTA can chelate metal ions, and alkaline sodium bicarbonate is used to improve performance. Comparative Examples 1-3 replace trehalose with chitosan, lactobionic acid, and avocado tree fat on the basis of Example 2. Chitosan is a polysaccharide with good biocompatibility and biodegradability, with adsorption and film-forming properties, and can form a protective layer on the surface of clothing, which can reduce fiber damage during washing; lactobionic acid is an α-hydroxy acid that can maintain the smoothness and softness of clothing fibers and promote the removal of stains; avocado tree fat is a natural oil that can provide additional softness and antistatic properties for clothing, reduce friction damage during washing, and maintain the natural gloss and feel of clothing. Comparative Examples 1-3 are slightly lower than Example 2 in terms of cleaning power for coffee, red wine, and black tea. The possible reason is that: the wettability of trehalose has a positive effect on the permeability of the stain cleaning composition, which helps the detergent to penetrate into the clothing fibers. The alternative ingredients of Examples 1-3 may be insufficient in terms of wettability; the biocompatibility and environmental friendliness of trehalose may help maintain the stability and activity of the surfactant component in the detergent, so that other components can play a better role.

[0058] In the embodiment of the present invention, sodium hexametaphosphate and polyvinyl alcohol are added on the basis of cocamidopropyl betaine, sodium cocoyl isethionate, and fatty alcohol polyoxyethylene ether surfactants. Sodium hexametaphosphate can effectively bind calcium and magnesium ions in water to prevent these metal ions from reacting with surfactants in detergents, thereby maintaining the decontamination ability of detergents. It can also be used as a dispersant to help disperse stains and improve cleaning efficiency. Polyvinyl alcohol provides film-forming and protective properties, can form a protective layer during the washing process, reduce mechanical damage to fabric materials, and also has the function of stabilizing foam and improving the rheological properties of washing liquid, which helps detergents to better penetrate and clean stains, so that the cleaning compositions of Examples 1-3 show good cleaning effects on common stains such as coffee, red wine, and black tea in the detergency test, and the detergency is higher than that of commercially available products. Compared with Example 3, the detergency of Example 2 is not much different. Because Example 2 contains trehalose, its detergency is slightly higher than that of Example 3, which indicates that trehalose may have a certain positive effect on decontamination. The stain cleaning composition in Example 1 is based on Example 3, and complex trehalose is added. The amino-modified trehalose reacts with glutaraldehyde and 2-aminoethylsulfonamide, which enhances the wettability of the application, promotes the uniform coverage and deep penetration of the stain cleaning composition on the surface of clothing, and thus more effectively contacts and loosens the stains. Trehalose has hydrophilicity and a certain degree of lipophilicity, which helps to dissolve and disperse the stains, prevents them from redepositing during the washing process, and ultimately helps to improve the washing efficiency.

[0059] Test Example 2

[0060] Fabric snagging performance test

[0061] Fabric snagging refers to the situation in which fibers and yarns in filament and knitted fabrics are pulled up from the surface of the fabric due to the hooking effect. This is a common phenomenon that is difficult to completely avoid, and has a major impact on the appearance and durability of the fabric. Snagging refers to the surface defects formed by the yarn or fiber in the fabric being hooked by a sharp object, usually including protrusions formed by the fibers or yarns being hooked out of the fabric surface, such as coils, fiber loops, fiber bundles, and fluff, etc., and tight yarn segments formed by local yarns or fibers being hooked. Snagging usually exists in one or a combination of these phenomena.

[0062] Test Example 2 The test objects are divided into four groups, the stain cleaning compositions of Examples 1-3 are used as the experimental groups, and a blank control group is set up, in which no cleaning composition is added. 16 samples are cut from the same piece of wool fabric without patterns and designs for testing, 4 pieces in each group, each sample size is 140mm×140mm, each group of samples is divided into 2 warp and 2 weft samples, the samples should not contain the same warp and weft yarns, and the fabric direction is marked on the non-test surface of each sample; when sampling, the distance from the edge of the fabric is at least 1 / 10 of the width, and wrinkles, defects, etc. should be avoided.

[0063] The experimental group used the stain cleaning composition to wash the fabric and dried it, and the blank control group only washed the fabric and dried it. The washing and drying were carried out in the same way and in the same environment. The corresponding test samples were obtained according to the number of washings. The samples were tested for fabric snagging performance according to the national standard GB / T 11047.2-2022 "Testing and Evaluation of Snagging Performance of Textile Fabrics Part 2: Tumble Box Method". After the test, the fabric snagging performance was evaluated. Level 5 means no snagging on the surface; Level 4 means slight snagging on the surface; Level 3 means moderate snagging on the surface, and different snagging phenomena appear on part of the surface of the sample; Level 2 means obvious snagging on the surface, and different snagging phenomena appear on most of the surface of the sample; Level 1 means severe snagging on the surface, and different snagging phenomena appear on the entire surface of the sample. Levels greater than or equal to 4 indicate good anti-snagging performance, levels greater than or equal to 3 indicate certain anti-snagging performance, and levels less than or equal to 2 indicate poor anti-snagging performance, as summarized in Table 2. That is, observe whether the fabric has snagging after washing for the 5th, 10th, and 20th times, and compare with the blank control group to determine whether the stain cleaning composition in Examples 1-3 can alleviate the fabric snagging phenomenon and play a maintenance and protection effect on the fabric during the actual washing process.

[0064] Table 2 Fabric snagging performance test

[0065]

[0066] Test Example 2 shows that as the number of washes increases, the snagging performance of the fabric decreases, and the performance degradation caused by repeated washing is difficult to completely avoid. The stain cleaning composition of Example 1 still maintains good anti-snagging performance after 20 washes. In contrast, the anti-snagging performance of Examples 2 and 3 and the blank control group decreases to level 4 after 10 washes. The blank control group lacks the protection of any detergent, and the anti-snagging performance decreases more significantly. After 20 washes, the anti-snagging performance decreases to level 3, showing moderate snagging. The stain cleaning composition in Example 1 is added with composite modified trehalose, which plays a protective role in the process of washing animal protein fiber fabrics such as wool fabrics. It can wrap and isolate the protein fibers when dissolved in water, reduce mechanical friction and physical stretching during the washing process, and thus prevent the fibers and yarns from being pulled up from the surface of the fabric due to hooking; the enhanced moisturizing effect helps to maintain the softness of the fibers, reduce friction between fibers, and thus reduce the possibility of snagging; in the washing application of fabrics containing protein components such as wool, it maintains the integrity and elasticity of these protein fibers, reduces damage during the washing process, and thus reduces the snagging phenomenon throughout the washing cycle, achieving good technical effects and extending the service life of clothing.

[0067] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. A method for preparing a stain cleaning composition, characterized in that: The following steps are involved: (1) Add trehalose and N-aminoethyl-3-aminopropylmethyldimethoxysilane to water and stir for 0.5-1 hour, heat to 80-90°C and stir for 3-5 hours, concentrate and dry at 90-110°C, grind and sieve to obtain modified trehalose for later use; (2) Weigh glutaraldehyde and 2-aminoethylsulfonamide, add them to anhydrous ethanol, reflux at 80-90° C. for 1-2 hours, add acetic acid and modified trehalose, and continue stirring for 2-4 hours, concentrate and dry at 45-55° C., grind and sieve to obtain composite trehalose; (3) adding a surfactant, complex trehalose, sodium hexametaphosphate, and polyvinyl alcohol to water, and stirring at room temperature for 20-60 minutes to obtain the stain cleaning composition; In the step (1), the weight ratio of trehalose, N-aminoethyl-3-aminopropylmethyldimethoxysilane and water is 5-8:1-2:60-100; In the step (2), the weight ratio of glutaraldehyde, 2-aminoethylsulfonamide, anhydrous ethanol, acetic acid, and modified trehalose is 2-4: 4-6: 140-160: 0.01-0.02: 5-8; In the step (3), the weight ratio of the surfactant, the composite trehalose, the sodium hexametaphosphate, the polyvinyl alcohol and the water is 8-12:8-15:1-2:6-12:80-120; In the step (3), the surfactant is a mixture of any one or more of cocamidopropyl betaine, sodium dodecylbenzene sulfonate, sodium cocoyl isethionate, fatty alcohol polyoxyethylene ether, and sodium stearate.

2. The method for preparing the stain cleaning composition according to claim 1, characterized in that: The grinding and sieving in the step (1) is performed using a 100-120 mesh sieve.

3. The method for preparing the stain cleaning composition according to claim 1, characterized in that: The grinding and sieving in the step (2) is performed using a 100-120 mesh sieve.

4. A stain cleaning composition, characterized in that The method is prepared according to any one of claims 1 to 3.

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