A bacteria-removing laundry detergent and a preparation method thereof

Abstract

The application relates to the field of daily chemicals, and particularly discloses a bacteria-removing laundry detergent and a preparation method thereof. The bacteria-removing laundry detergent comprises the following raw materials in mass fractions: 0.01-0.5 parts of a chelating agent, 10-20 parts of a soil removal composition, 0.01-0.2 parts of a bacteria-removing agent, 0.01-0.5 parts of an organic silicon softening agent, 0.1-2 parts of an anti-redeposition agent, 0.01-0.2 parts of a defoaming agent, 0.5-5 parts of a thickening agent, 0.1-2 parts of a fragrance, 0.1-1 part of a preservative and 60-85 parts of water; in addition, the preparation method has the advantages of improving the soil removal and bacteria-removing effects of the laundry detergent.

Description

Technical Field

[0001] This application relates to the field of daily chemical products, and more specifically, it relates to an antibacterial laundry detergent and a method for preparing the same. Background Technology

[0002] In the laundry detergent product sector, as people's living standards improve, their needs for clothing cleaning are becoming increasingly diversified. As a commonly used cleaning product in daily life, laundry detergent has undergone continuous evolution, gradually expanding from simple cleaning functions to richer functions. The emergence of laundry detergent has greatly changed people's laundry habits. Compared with traditional laundry powder, it has advantages such as ease of use and rapid dissolution, and occupies an important position in the market. Today, consumers' requirements for laundry detergent are no longer limited to stain removal; they also have higher expectations for its health and environmental protection aspects.

[0003] In the past, to meet the needs of clothing cleaning, laundry detergent products on the market mainly focused on stain removal. The common approach was to add various surfactants, which reduced the surface tension of water, making it easier for stains to be removed from clothes. At the same time, some additives were also added to enhance the stain removal effect. For example, chelating agents could remove metal ions in water to prevent them from combining with stains and affecting the stain removal ability. In addition, to improve the user experience of laundry detergent, defoamers, fragrances, preservatives and other substances were added. However, most of these conventional laundry detergent products simply emphasized stain removal and paid little attention to sterilization. Even if some products claimed to have sterilization effects, they could not actually achieve the purpose of sterilization effectively.

[0004] The main drawback of existing commercially available laundry detergents is that, although they generally have stain removal functions, there is a severe lack of products that truly have antibacterial effects. Even if some products claim to have antibacterial functions, they are still unable to meet consumers' needs for healthy and clean products. Moreover, there is a lack of laundry detergents on the market that are designed for healthy cleaning, especially those that incorporate a natural concept, which fails to meet consumers' pursuit of environmental protection and health. Summary of the Invention

[0005] In order to improve the stain removal and antibacterial effects of laundry detergent, this application provides an antibacterial laundry detergent and its preparation method.

[0006] In a first aspect, this application provides an antibacterial laundry detergent, which adopts the following technical solution: An antibacterial laundry detergent comprises the following raw materials in parts by weight: 0.01-0.5 parts chelating agent, 10-20 parts stain-removing composition, 0.01-0.2 parts antibacterial agent, 0.01-0.5 parts silicone fabric softener, 0.1-2 parts anti-redeposition agent, 0.01-0.2 parts defoamer, 0.5-5 parts thickener, 0.1-2 parts fragrance, 0.1-1 part preservative, and 60-85 parts water.

[0007] By adopting the above technical solutions, the chelating agent can combine with metal ions in water, preventing metal ions from adversely affecting the performance of the laundry detergent and improving its stability and cleaning effect; the stain-removing composition has strong stain-removing ability and can effectively remove stains from clothes; the antibacterial agent can effectively remove various germs and ensure the hygiene of clothes; the silicone softener can make clothes softer and smoother; the anti-redeposition agent can prevent stains from redepositing on clothes; and water, as a solvent, dissolves and mixes the various raw materials to form a uniform and stable laundry detergent product, thereby achieving the dual functions of stain removal and antibacterial properties, meeting people's needs for clean and hygienic clothes.

[0008] Preferably, the detergency composition comprises sodium dodecylbenzenesulfonate, sodium fatty alcohol polyoxyethylene ether sulfate, 2-propylheptanol ethoxylate / fatty alcohol complex, fatty alcohol polyoxyethylene ether, and potassium oleate soap in a mass ratio of (1-5):(5-10):(0.5-2):(1-5):(0.1-2).

[0009] By employing the above technical solutions, sodium dodecylbenzenesulfonate exhibits excellent detergency, emulsification, and foaming properties, effectively removing oil and stains from clothing; sodium fatty alcohol polyoxyethylene ether sulfate possesses strong emulsifying, dispersing, and detergency capabilities, with minimal skin irritation; 2-propylheptanol ethoxylate / fatty alcohol complex enhances the penetration and dispersion properties of the detergency composition, allowing dirt to be removed from fabrics more quickly; fatty alcohol polyoxyethylene ether has excellent emulsifying and detergency effects, contributing to improved overall detergency; potassium oleate soap provides emulsification and detergency while also softening fabrics. These components, combined in a specific mass ratio, work synergistically, fully utilizing their respective advantages to achieve a more powerful comprehensive detergency, thereby more effectively removing various stains from clothing and enhancing the overall detergency performance of the laundry detergent.

[0010] Preferably, the disinfectant comprises a multi-component complex enzyme and 4,4'-dichloro-2-hydroxydiphenyl ether in a mass ratio of (0.1-0.5):(0.05-0.1).

[0011] By adopting the above technical solution, the multi-component enzyme has a variety of catalytic functions and can specifically act on the bacterial cell wall, cell membrane and some key biomolecules inside the cell, destroying the structure and metabolic function of bacteria, thereby achieving the purpose of sterilization; 4,4'-dichloro-2-hydroxydiphenyl ether can inhibit the activity of certain enzymes in bacteria and interfere with the metabolic process of bacteria, further enhancing the sterilization effect. The two work synergistically to effectively remove bacteria, including the top ten pathogens, while removing odors from fabrics at the source, meeting the sterilization and deodorization needs of laundry detergent.

[0012] Secondly, this application provides a method for preparing antibacterial laundry detergent, which adopts the following technical solution: A method for preparing an antibacterial laundry detergent includes the following steps: mixing and stirring water, chelating agent, stain-removing composition, antibacterial agent, silicone softener, and anti-redeposition agent evenly; adding defoamer, fragrance, and preservative; mixing evenly; adding thickener; and mixing evenly to obtain the antibacterial laundry detergent.

[0013] By adopting the above technical solution, water, chelating agent, stain-removing composition, antibacterial agent, silicone softener, and anti-redeposition agent are first mixed and stirred evenly, which can fully disperse and initially integrate the various components, ensuring stable performance in subsequent processing. Finally, a multi-functional antibacterial laundry detergent is produced that has both stain removal ability and effective antibacterial properties, while also having softening, anti-stain redeposition, fragrance retention, and shelf-life effects.

[0014] Preferably, the detergency composition is further pretreated before addition as follows: the detergency composition is dispersed in water, mixed evenly, added to an oil-in-water emulsion of polylactic acid, ultrasonically emulsified, added to a polyvinyl alcohol solution containing an emulsifier, and then added to a 4% acetic acid solution of chitosan. The solvent is evaporated under magnetic stirring, centrifuged, separated, and dried to obtain clean microcapsules.

[0015] By adopting the above technical solution, the microcapsule structure allows the detergency composition to exist independently and work in conjunction with the antibacterial microcapsules to achieve staggered detergency and antibacterial action, avoiding mutual interference between the two, thereby improving the detergency and antibacterial effects. At the same time, the encapsulation of microcapsules can reduce the influence of external factors on the detergency composition, improve its stability, and prolong its effective action time in laundry detergent.

[0016] Preferably, the mass ratio of the detergency composition to polylactic acid is (0.5-1):(0.5-1).

[0017] By adopting the above technical solution and controlling the mass ratio of the detergency composition to polylactic acid, the polylactic acid can effectively coat the detergency composition, and the cleaning microcapsules have a moderate wall thickness, are relatively stable during storage, and are easily broken under stress during use to achieve the detergency effect.

[0018] Preferably, the disinfectant undergoes the following pretreatment before being added: maltodextrin, disinfectant and water are mixed and spray-dried to obtain disinfectant microspheres; hydroxypropyl methylcellulose phthalate, ethanol and talc are mixed to obtain a coating solution, and the coating solution is used to coat the disinfectant microspheres through a fluidized bed process to obtain disinfectant microcapsules.

[0019] By adopting the above technical solution, the method of independently encapsulating the antibacterial agent into microcapsules allows for staggered cleaning and sterilization. When the laundry detergent takes effect, the cleaning composition is used first for cleaning, and then the antibacterial agent is released for sterilization. This better meets the dual needs of clothes for both cleaning and sterilization. At the same time, the antibacterial agent has better stability during storage and is less likely to be deactivated by external environmental factors.

[0020] Preferably, the mass ratio of the maltodextrin, the antibacterial agent, and the hydroxypropyl methylcellulose phthalate is (5-6):(0.5-0.6):(2.5-3.1).

[0021] By adopting the above technical solution and controlling the mass ratio of maltodextrin, antibacterial agent, and hydroxypropyl methylcellulose phthalate, the antibacterial microcapsules have good stability and can better preserve the activity of the antibacterial agent in laundry detergent. When using laundry detergent, the antibacterial microcapsules can work in a staggered manner with the cleaning composition that has been pretreated to form cleaning microcapsules, avoiding mutual interference between the cleaning and antibacterial components, thereby achieving better cleaning and antibacterial effects, effectively removing stains and germs from fabrics, and eliminating odors from fabrics at the source.

[0022] In summary, this application has the following beneficial effects: 1. Because the chelating agent in this application can combine with metal ions in water, it prevents metal ions from adversely affecting the performance of the laundry detergent, thereby improving the stability and cleaning effect of the laundry detergent; the stain-removing composition has strong stain-removing ability and can effectively remove stains from clothes; the antibacterial agent can effectively remove a variety of bacteria, ensuring the hygiene of clothes; the silicone softener can make clothes softer and smoother; the anti-redeposition agent can prevent stains from redepositing on clothes; and water, as a solvent, dissolves and mixes the various raw materials to form a uniform and stable laundry detergent product, thus achieving the dual functions of stain removal and antibacterial properties of the laundry detergent, meeting people's needs for the cleanliness and hygiene of clothes.

[0023] 2. The multi-component enzyme in this application has multiple catalytic functions and can specifically act on the bacterial cell wall, cell membrane and some key biomolecules inside the cell, destroying the structure and metabolic function of bacteria, thereby achieving the purpose of sterilization; 4,4'-dichloro-2-hydroxydiphenyl ether can inhibit the activity of certain enzymes in bacteria and interfere with the metabolic process of bacteria, further enhancing the sterilization effect. The two work synergistically to effectively remove bacteria, including the top ten pathogens, while removing odors from fabrics at the source, meeting the sterilization and deodorization needs of laundry detergent.

[0024] 3. The method of independently encapsulating the antibacterial agent to form microcapsules in this application allows for staggered cleaning and sterilization. When the laundry detergent takes effect, the cleaning composition is used first for cleaning, and then the antibacterial agent is released for sterilization. This better meets the dual needs of clothing for both cleaning and sterilization. At the same time, the antibacterial agent has better stability during storage and is less likely to be deactivated by external environmental factors. Detailed Implementation

[0025] The present application will be further described in detail below with reference to the embodiments. Example

[0026] The sources of each substance in the embodiments are shown in Table 1.

[0027] Table 1 Raw materials, their manufacturers and models Raw material name Raw material source and model Tetrasodium glutamate diacetate Hebei Jack's GLDA-4Na Sodium dodecylbenzenesulfonate Zanyu Technology Group Co., Ltd. Sodium fatty alcohol polyoxyethylene ether sulfate Zanyu Technology Group Co., Ltd. AES-2EO 2-Propylheptanol ethoxylate / fatty alcohol complex Berol 611 of Nouryon Fatty alcohol polyoxyethylene ether Petronas Chemicals' AEO silicone softener Innocore HST62 Sodium polyacrylate BASF PA25CL Defoamer DOW's AFE-2017 Multi-component enzymes Novozymes' Brilliant 300L 4,4'-Dichloro-2-hydroxybiphenyl ether BASF's HP 100

[0028] Example 1 An antibacterial laundry detergent comprises the following raw materials in parts by weight: 0.01 kg chelating agent, 7.6 kg detergency composition, 0.15 kg antibacterial agent, 0.1 kg silicone fabric softener, 0.1 kg anti-redeposition agent, 0.01 kg defoamer, 0.1 kg thickener, 0.1 kg fragrance, 0.1 kg preservative, and 45 kg water. The chelating agent is tetrasodium diacetate of glutamic acid. The detergency composition comprises sodium dodecylbenzenesulfonate, sodium fatty alcohol polyoxyethylene ether sulfate, 2-propylheptanol ethoxylate / fatty alcohol compound, fatty alcohol polyoxyethylene ether, and potassium oleate soap in a mass ratio of 1:5:0.5:1:0.1. The anti-redeposition agent is sodium polyacrylate. The antibacterial agent comprises a multi-component complex enzyme and 4,4'-dichloro-2-hydroxydiphenyl ether in a mass ratio of 0.1:0.05.

[0029] The above-mentioned method for preparing antibacterial laundry detergent includes the following steps: mixing and stirring water, chelating agent, stain-removing composition, antibacterial agent, silicone softener, and anti-redeposition agent evenly; adding defoamer, fragrance, and preservative; mixing evenly; adding thickener; and mixing evenly to obtain antibacterial laundry detergent.

[0030] Example 2

[0031] An antibacterial laundry detergent comprises the following raw materials in parts by weight: 0.05 kg chelating agent, 15.6 kg stain-removing composition, 0.26 kg antibacterial agent, 2 kg silicone fabric softener, 2 kg anti-redeposition agent, 0.05 kg defoamer, 1 kg thickener, 1 kg fragrance, 1 kg preservative, and 55 kg water. The chelating agent is tetrasodium diacetate of glutamic acid. The stain-removing composition comprises sodium dodecylbenzenesulfonate, sodium fatty alcohol polyoxyethylene ether sulfate, 2-propylheptanol ethoxylate / fatty alcohol compound, fatty alcohol polyoxyethylene ether, and potassium oleate soap in a mass ratio of 5:10:2:5:2. The anti-redeposition agent is sodium polyacrylate. The antibacterial agent comprises a multi-component complex enzyme and 4,4'-dichloro-2-hydroxydiphenyl ether in a mass ratio of 0.5:0.1.

[0032] The above-mentioned method for preparing antibacterial laundry detergent includes the following steps: mixing and stirring water, chelating agent, stain-removing composition, antibacterial agent, silicone softener, and anti-redeposition agent evenly; adding defoamer, fragrance, and preservative; mixing evenly; adding thickener; and mixing evenly to obtain antibacterial laundry detergent.

[0033] Example 3

[0034] The difference between Example 3 and Example 1 is that in Example 3, the mass ratio of sodium dodecylbenzenesulfonate, sodium fatty alcohol polyoxyethylene ether sulfate, 2-propylheptanol ethoxylate / fatty alcohol compound, fatty alcohol polyoxyethylene ether, and potassium oleate soap in the detergency composition is 1:2:4:0.5:3.

[0035] Example 4

[0036] The difference between Example 4 and Example 1 is that in Example 4, the mass ratio of sodium dodecylbenzenesulfonate, sodium fatty alcohol polyoxyethylene ether sulfate, 2-propylheptanol ethoxylate / fatty alcohol complex, fatty alcohol polyoxyethylene ether, and potassium oleate soap in the detergency composition is 1:15:0.1:7:0.05.

[0037] Example 5

[0038] The difference between Example 5 and Example 1 is that in Example 5, the mass ratio of the multi-component complex enzyme and 4,4'-dichloro-2-hydroxydiphenyl ether is 0.1:0.01.

[0039] Example 6

[0040] The difference between Example 6 and Example 1 is that in Example 6, the mass ratio of the multi-component complex enzyme and 4,4'-dichloro-2-hydroxydiphenyl ether is 0.1:0.2.

[0041] Example 7

[0042] The difference between Example 7 and Example 1 is that in Example 7, the detergency composition underwent the following pretreatment before addition: 5g of the detergency composition was dispersed in 50mL of water, mixed evenly, added to 50mL of 2% polylactic acid oil-in-water emulsion, ultrasonically emulsified, added to 100mL of 5wt% polyvinyl alcohol solution containing 1g of Span80, and then added to 200mL of 4% chitosan acetic acid solution. The solvent was evaporated under magnetic stirring, centrifuged, separated, and dried to obtain cleaning microcapsules. The mass ratio of the detergency composition to polylactic acid was 0.5:0.5.

[0043] Example 8

[0044] The difference between Example 8 and Example 1 is that in Example 8, the detergency composition underwent the following pretreatment before addition: 7g of the detergency composition was dispersed in 65mL of water, mixed evenly, and then added to 100mL of 2% polylactic acid oil-in-water emulsion. After ultrasonic emulsification, it was added to 100mL of 5t% polyvinyl alcohol solution containing 1g of Span80, and then added to 200mL of 4% chitosan acetic acid solution. The solvent was evaporated under magnetic stirring, and the solution was centrifuged, separated, and dried to obtain cleaning microcapsules. The mass ratio of the detergency composition to polylactic acid was 0.5:1.

[0045] Example 9

[0046] The difference between Example 9 and Example 7 is that in Example 9, the disinfectant undergoes the following pretreatment before addition: 5g of maltodextrin, 0.5g of disinfectant, and 50g of water are mixed and spray-dried to obtain disinfectant microspheres. The inlet air temperature is 155℃, the outlet air temperature is 75℃, and the feed rate is 6mL / min. 2.5g of hydroxypropyl methylcellulose phthalate, 50mL of ethanol, and 0.5g of talc are mixed to obtain a coating solution with a concentration of 5wt%. The coating solution is used to coat the disinfectant microspheres through a fluidized bed process, with an average coating thickness of 5μm, to obtain disinfectant microcapsules. The mass ratio of maltodextrin, disinfectant, and hydroxypropyl methylcellulose phthalate is 5:0.5:2.5.

[0047] Example 10

[0048] The difference between Example 10 and Example 7 is that in Example 10, the disinfectant underwent the following pretreatment before addition: 6g of maltodextrin, 0.6g of disinfectant and 60g of water were mixed and spray-dried to obtain disinfectant microspheres. The inlet air temperature was 155℃, the outlet air temperature was 75℃, and the feed rate was 6mL / min. 3.1g of hydroxypropyl methylcellulose phthalate, 60mL of ethanol and 0.6g of talc were mixed to obtain a coating solution with a concentration of 5wt%. The coating solution was used to coat the disinfectant microspheres through a fluidized bed process, and the average coating thickness was 5μm to obtain disinfectant microcapsules. The mass ratio of maltodextrin, disinfectant and hydroxypropyl methylcellulose phthalate was 6:0.6:3.1. Comparative Example

[0049] Comparative Example 1 The difference between Comparative Example 1 and Example 1 is that no detergency composition was added in Comparative Example 1.

[0050] Comparative Example 2 The difference between Comparative Example 2 and Example 1 is that no disinfectant was added in Comparative Example 2. Performance testing

[0051] Antibacterial laundry detergents were prepared according to Examples 1-10 and Comparative Examples 1-2. Their antibacterial performance against Staphylococcus aureus was tested according to QB / T 2850-2023 "Antibacterial and Bacteriostatic Detergents," and the 72-hour long-lasting antibacterial rate was also tested. The results are recorded in Table 2. The skin reaction of the laundry detergent to sensitive skin individuals was tested according to the "Cosmetic Safety Technical Specifications" (2015 edition), and the results are recorded in Table 2. Sensitive skin tests and mite-removal performance tests were also conducted on the antibacterial laundry detergents prepared in Examples 1-2. The contents of triclosan, nonylphenol polyoxyethylene ether, fluorescent whitening agent, total phosphorus pentoxide, triacetic acid, methanol, and diethylene glycol in the antibacterial laundry detergents were also detected.

[0052] Table 2 Performance Tests of Antibacterial Laundry Detergent project Antibacterial properties / % Long-lasting antibacterial rate / % Skin reaction / grade Example 1 ≥99.99 ＞99.99 Grade 0, no adverse reactions Example 2 ≥99.99 ＞99.99 Grade 0, no adverse reactions Example 3 98.5 98.1 Grade 0, no adverse reactions Example 4 96.8 95.7 Grade 0, no adverse reactions Example 5 98.9 97.5 Grade 0, no adverse reactions Example 6 99.2 98.3 Grade 0, no adverse reactions Example 7 ≥99.99 ＞99.99 Grade 0, no adverse reactions Example 8 ≥99.99 ＞99.99 Grade 0, no adverse reactions Example 9 ≥99.99 ＞99.99 Grade 0, no adverse reactions Example 10 ≥99.99 ＞99.99 Grade 0, no adverse reactions Comparative Example 1 92 86 Two people developed grade 1 erythema. Comparative Example 2 83 75 Grade 0, no adverse reactions As can be seen from Examples 1-2, Comparative Examples 1-2, and Table 2, the antibacterial laundry detergents prepared in Examples 1-2 all exhibited an antibacterial rate of ≥99.99% against Staphylococcus aureus, with a 72-hour long-lasting antibacterial rate also >99.99%, and showed no adverse reactions on sensitive skin. This indicates that this application, through the synergistic effect of chelating agents, a specific ratio of detergency composition, and antibacterial agents, achieves both excellent detergency and long-lasting antibacterial effect, while maintaining the product's gentleness. Comparative Example 1, without the addition of a detergency composition, showed a significant decrease in its antibacterial performance and long-lasting antibacterial rate, and some users experienced skin erythema, indicating that the detergency composition is not only the core of cleaning but its reasonable compounding system also significantly contributes to the product's gentleness and user experience. Comparative Example 2, without the addition of an antibacterial agent, showed a significant reduction in antibacterial performance, confirming that the specific antibacterial agent combination in this application is key to achieving efficient antibacterial action. Furthermore, testing showed that the antibacterial laundry detergent prepared in Examples 1-2, in skin tests on sensitive skin populations, did not cause any adverse skin reactions in 33 sensitive skin subjects at 0.5h, 24h, and 48h after removal of the test sample. Clothes containing mites, after being washed with the antibacterial laundry detergent through a standard washing process, achieved a 100% mite removal rate. Triclosan, nonylphenol polyoxyethylene ether, fluorescent whitening agents, total phosphorus pentoxide, triacetic acid, methanol, and diethylene glycol were all undetectable.

[0053] Compared with Examples 1-2, Examples 3-4 changed the mass ratio of each component in the detergency composition, and its antibacterial performance and long-lasting antibacterial rate both decreased. This shows that a specific mass ratio can enable each surfactant to achieve the optimal synergistic effect, thereby creating a better environment for the antibacterial agent to play its role while effectively deterging, indirectly improving the overall antibacterial efficiency. The change in mass ratio affected this synergistic effect, and the synergistic effect was weakened.

[0054] Compared with Examples 1-2, Examples 5-6 changed the mass ratio of the multi-component enzyme to 4,4'-dichloro-2-hydroxydiphenyl ether in the disinfectant. The antibacterial performance and long-term antibacterial rate of Examples 5-6 both decreased. This indicates that the mass ratio of the multi-component enzyme to 4,4'-dichloro-2-hydroxydiphenyl ether can achieve the best balance and synergy between the biocatalytic antibacterial effect of the enzyme and the metabolic interference effect of the chemical antibacterial agent, thereby achieving broad-spectrum and efficient removal of bacteria, including the top ten pathogens, and root-cause deodorization. Changes in the mass ratio may affect this synergistic effect.

[0055] Compared with Examples 1-2, Examples 7-8 involved microencapsulation pretreatment of the stain-removing composition to form cleaning microcapsules. Examples 7-8 all exhibited excellent antibacterial properties and long-lasting effects, indicating that encapsulating the stain-removing composition to form cleaning microcapsules can protect its activity during storage. During use, the release is controlled by mechanical action, such as friction during the washing process, avoiding possible mutual interference or inactivation of the stain-removing and antibacterial components in the initial mixing stage. This ensures that each component exerts its maximum effect at the optimal time, thereby maintaining the overall performance of the product.

[0056] Compared with Examples 7-8, Examples 9-10 further pre-treated the antibacterial agent with microencapsulation to form antibacterial microcapsules. Examples 9-10 showed an excellent antibacterial rate of ≥99.99% and a long-lasting antibacterial rate. This indicates that the antibacterial agent was also independently encapsulated to form a "dual microcapsule" system, which can more accurately achieve the sequential action of "stain removal first, then sterilization". During the washing process, the cleaning microcapsules rupture first to release the stain removal ingredients, effectively removing stains; subsequently, the antibacterial microcapsules release antibacterial ingredients under the action of dilution and friction, deeply sterilizing the cleaned fabric, which can maximize the effectiveness of each component.

[0057] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A bactericidal laundry detergent, characterized in that: The raw materials include the following parts by weight: 0.01-0.5 parts chelating agent, 10-20 parts detergent composition, 0.01-0.2 parts antibacterial agent, 0.01-0.5 parts silicone softener, 0.1-2 parts anti-redeposition agent, 0.01-0.2 parts defoamer, 0.5-5 parts thickener, 0.1-2 parts fragrance, 0.1-1 part preservative and 60-85 parts water.

2. The antibacterial laundry detergent according to claim 1, characterized in that: The detergency composition comprises sodium dodecylbenzenesulfonate, sodium fatty alcohol polyoxyethylene ether sulfate, 2-propylheptanol ethoxylate / fatty alcohol complex, fatty alcohol polyoxyethylene ether, and potassium oleate soap in a mass ratio of (1-5):(5-10):(0.5-2):(1-5):(0.1-2).

3. The antibacterial laundry detergent according to claim 1, characterized in that: The disinfectant comprises a multi-component complex enzyme and 4,4'-dichloro-2-hydroxydiphenyl ether in a mass ratio of (0.1-0.5):(0.05-0.1).

4. A method for preparing an antibacterial laundry detergent according to any one of claims 1-3, characterized in that: Includes the following steps: Water, chelating agent, detergent composition, antibacterial agent, silicone softener, and anti-redeposition agent are mixed and stirred evenly. Defoamer, fragrance, and preservative are added and mixed evenly. Thickener is then added and mixed evenly to obtain antibacterial laundry detergent.

5. The method for preparing an antibacterial laundry detergent according to claim 4, characterized in that: The cleaning composition is pretreated as follows before addition: the cleaning composition is dispersed in water, mixed evenly, added to an oil-in-water emulsion of polylactic acid, ultrasonically emulsified, added to a polyvinyl alcohol solution containing an emulsifier, and then added to a 4% acetic acid solution of chitosan. The solvent is evaporated under magnetic stirring, centrifuged, separated, and dried to obtain cleaning microcapsules.

6. The method for preparing an antibacterial laundry detergent according to claim 5, characterized in that: The mass ratio of the detergency composition to polylactic acid is (0.5-1):(0.5-1).

7. The method for preparing an antibacterial laundry detergent according to claim 4, characterized in that: Before being added, the sterilizing agent undergoes the following pretreatment: maltodextrin, sterilizing agent and water are mixed and spray-dried to obtain sterilizing microspheres; hydroxypropyl methylcellulose phthalate, ethanol and talc are mixed to obtain a coating solution, and the coating solution is used to coat the sterilizing microspheres through a fluidized bed process to obtain sterilizing microcapsules.

8. The method for preparing an antibacterial laundry detergent according to claim 7, characterized in that: The mass ratio of the maltodextrin, the antibacterial agent, and the hydroxypropyl methylcellulose phthalate is (5-6):(0.5-0.6):(2.5-3.1).