Rare earth liquid detergent and preparation method thereof

Abstract

The invention provides a rare earth liquid detergent and a preparation method thereof, and belongs to the technical field of rare earth bactericidal bacteriostatic agents. According to the rare earth liquid detergent disclosed by the invention, the water-soluble rare earth complex is used as a bactericidal and bacteriostatic active component, so that the rare earth liquid detergent has a relatively high bactericidal rate on harmful bacteria such as staphylococcus aureus and the like, and the health of a user is effectively guaranteed. The rare earth water-soluble complex is used as a main bactericidal and bacteriostatic agent, and compared with other water-soluble rare earth salts, such as rare earth chloride and rare earth nitrate, the rare earth water-soluble complex shows more excellent bactericidal and bacteriostatic effects. The detergent is generally slightly alkaline, and a soluble rare earth salt aqueous solution is strongly acidic and is easy to hydrolyze in an alkaline aqueous solution, so that the use effect is reduced. Compared with the prior art, the application condition of the rare earth complex is wider, excellent sterilization and bacteriostasis performance can be kept even in an alkaline environment, and practical application is better facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of application of rare earth bactericidal and bacteriostatic agents, and in particular to a rare earth liquid detergent and a preparation method thereof. Background Art

[0002] Detergents are chemicals used to clean dirt from the surfaces of various objects. They remove stains through physical and chemical effects. The concept of detergents covers a wide range of products, from household cleaners to cleaning solutions for industrial use. The general ingredients of detergents mainly include surfactants, builders and additives. Surfactants are the most critical ingredients in detergents. They can reduce the surface tension of water, allowing dirt to mix with water and facilitate cleaning. Builders such as phosphates or silicates can provide additional cleaning power and soften water quality. Additives include brighteners, enzyme preparations, fragrances, etc., which are used to enhance the washing effect or improve the sensory experience of the product.

[0003] Detergents can be divided into powder, liquid and solid according to their form, and divided into civil and industrial use according to their use. Civilian detergents usually refer to the washing products used in our daily lives to clean clothes, dishes, etc., while industrial detergents are used in more professional cleaning scenarios, such as cleaning mechanical parts.

[0004] Although the detergents in the prior art perform well in terms of decontamination, they still have some defects in terms of antibacterial performance. For example, patent CN200710134044.3 describes a detergent with antibacterial function, which is characterized by adding a silver-activated carbon fiber antibacterial agent during the production process of the detergent to achieve the effect of antibacterial sterilization and inhibiting bacterial regeneration. However, this detergent may have some limitations, such as the durability of the antibacterial agent, the potential impact on the environment, and the potential risks to human health. Therefore, the antibacterial performance of the detergents in the prior art needs to be further optimized to achieve a more efficient, environmentally friendly and safe antibacterial effect. Summary of the invention

[0005] The object of the present invention is to provide a rare earth liquid detergent having better antibacterial properties.

[0006] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions: The present invention provides a rare earth liquid detergent, which comprises the following components by weight: 15-30 parts of surfactant, 0.1-1.0 parts of soluble rare earth complex, 0.3-0.8 parts of moisturizer, 0.5-5 parts of anti-redeposition agent, 0.3-1.2 parts of active enzyme and 60-150 parts of water; The soluble rare earth complex is selected from one or more of rare earth carboxylic acid complexes, rare earth amino acid complexes, rare earth polysaccharide complexes, rare earth salicylic acid complexes, rare earth nitrogen heterocyclic complexes, rare earth acylhydrazone complexes, rare earth curcumin complexes and rare earth flavonoid complexes.

[0007] Preferably, the surfactant is selected from one or more of anionic surfactants, nonionic surfactants and amphoteric surfactants.

[0008] Preferably, the anionic surfactant is selected from one or more of sodium ethoxylated alkyl sulfate, alkylbenzene sulfonic acid, sodium alkyl aryl sulfonate, sodium coconut oil isethionate, sodium α-olefin sulfonate, sodium lauryl sulfate, fatty acid methyl ester sulfonate and sodium stearate.

[0009] Preferably, the nonionic surfactant is selected from one or more of fatty acyl diethanolamine, fatty alcohol polyoxyethylene ether, alkyl glycoside, alcohol ether glycoside, dodecylphenol polyoxyethylene ether and nonylphenol polyoxyethylene ether.

[0010] Preferably, the amphoteric surfactant is selected from one or more of dodecyl dimethyl amine oxide, cocamidopropyl betaine and sodium lauryl aminopropionate.

[0011] Preferably, the active enzyme is selected from one or more of protease, amylase, lipase and cellulase.

[0012] Preferably, the humectant is selected from glycerol or polyethylene glycol.

[0013] Preferably, the anti-redeposition agent is sodium polyacrylate.

[0014] Preferably, the rare earth liquid detergent further comprises fragrance, pigment, salt and pH adjuster.

[0015] The present invention also provides a method for preparing the rare earth liquid detergent, comprising the following steps: The surfactant is dissolved in water, and then other components except salt and pH regulator are added. After the components are dissolved, the pH regulator is added to adjust the pH to 6.5-8.0, and finally salt is added to obtain the rare earth liquid detergent.

[0016] Technical effects and advantages of the present invention: The rare earth liquid detergent of the present invention has good bactericidal and antibacterial effects on harmful bacteria such as Staphylococcus aureus and Escherichia coli, and effectively protects the health of users. As the main bactericidal and antibacterial agent, the rare earth water-soluble complex exhibits a more superior bactericidal and antibacterial effect than other water-soluble rare earth salts, such as rare earth chlorides and rare earth nitrates.

[0017] Since detergents are usually alkaline, and soluble rare earth salts are highly acidic, they are easily hydrolyzed in alkaline aqueous solutions, reducing their effectiveness. In contrast, rare earth complexes have a wider range of applicable conditions and can maintain excellent bactericidal and antibacterial properties even in alkaline environments, making them more suitable for practical applications.

[0018] The rare earth liquid detergent of the present invention is non-toxic and environmentally friendly, reduces adverse effects on the environment, and meets the current demand for green chemicals.

[0019] In daily household washing, the use of the rare earth liquid detergent of the present invention can provide additional antibacterial protection, especially for children's clothing and bedding, to ensure the health of the family. In the textile industry, the detergent of the present invention can be used to treat fabrics with antibacterial properties, produce clothing and home textile products with antibacterial functions, meet the market demand for healthy textiles, and show broad application prospects in multiple fields. DETAILED DESCRIPTION

[0020] The present invention provides a rare earth liquid detergent, which comprises the following components by weight: 15-30 parts of surfactant, 0.1-1.0 parts of soluble rare earth complex, 0.3-0.8 parts of moisturizer, 0.5-5 parts of anti-redeposition agent, 0.3-1.2 parts of active enzyme and 60-150 parts of water; The soluble rare earth complex is selected from one or more of rare earth carboxylic acid complexes, rare earth amino acid complexes, rare earth polysaccharide complexes, rare earth salicylic acid complexes, rare earth nitrogen heterocyclic complexes, rare earth acylhydrazone complexes, rare earth curcumin complexes, and rare earth flavonoid complexes.

[0021] In the present invention, the rare earth carboxylic acid complex is preferably a rare earth acetic acid complex, a rare earth lactic acid complex, a rare earth citric acid complex, a rare earth succinic acid complex, and a rare earth tartaric acid complex; the rare earth amino acid complex is preferably a rare earth lysine complex, a rare earth glycine complex, a rare earth alanine complex, a rare earth aspartic acid complex, and a rare earth glutamic acid complex; the rare earth polysaccharide complex is preferably a rare earth glucose complex, a rare earth xylose complex, a rare earth mannose complex, a rare earth galactose complex, and a rare earth rhamnose complex; the rare earth salicylic acid complex is preferably a rare earth sodium salicylate complex, a rare earth magnesium salicylate complex, a rare earth calcium salicylate complex, a rare earth potassium salicylate complex, and a rare earth zinc salicylate complex; The rare earth nitrogen heterocyclic complexes are preferably rare earth pyrrole complexes, rare earth pyridine complexes, rare earth quinoline complexes, rare earth isoquinoline complexes, and rare earth indole complexes; the rare earth acylhydrazone complexes are preferably rare earth benzoylhydrazone complexes, rare earth salicylhydrazone complexes, rare earth p-toluoylhydrazone complexes, rare earth o-toluoylhydrazone complexes, and rare earth m-toluoylhydrazone complexes; the rare earth curcumin rare earth complexes are preferably rare earth curcumin complexes, rare earth biscurcumin complexes, rare earth curcumin methyl ether complexes, rare earth curcumin ethyl ether complexes, and rare earth curcumin propyl ether complexes; the rare earth flavonoid complexes are preferably rare earth flavonoid complexes, rare earth isoflavone complexes, rare earth flavonol complexes, rare earth flavonoid glycoside complexes, and rare earth flavonoid aglycone complexes.

[0022] In the present invention, the rare earth is preferably lanthanum (La), cerium (Ce), neodymium (Nd), praseodymium (Pr), samarium (Sm), europium (Eu), gadolinium (Gd), dysprosium (Dy), holmium (Ho), erbium (Er), thulium (Tm), or yttrium (Y).

[0023] In the present invention, preferably, the surfactant is selected from one or more of anionic surfactants, nonionic surfactants, and amphoteric surfactants. Preferably, the anionic surfactant is selected from one or more of ethoxylated alkyl sodium sulfate, alkylbenzene sulfonic acid, sodium alkyl aryl sulfonate, sodium coconut oil isethionate, sodium α-olefin sulfonate, sodium dodecyl sulfate, fatty acid methyl ester sulfonate, and sodium stearate. Preferably, the nonionic surfactant is selected from one or more of fatty acyl diethanolamine, fatty alcohol polyoxyethylene ether, alkyl glycoside, alcohol ether glycoside, dodecylphenol polyoxyethylene ether, and nonylphenol polyoxyethylene ether. Preferably, the amphoteric surfactant is selected from one or more of dodecyl dimethylamine oxide, cocamidopropyl betaine, and sodium lauryl aminopropionate. Preferably, the active enzyme is selected from one or more of protease, amylase, lipase, and cellulase. Preferably, the humectant is selected from glycerol or polyethylene glycol. Preferably, the anti-redeposition agent is sodium polyacrylate. Preferably, the rare earth liquid detergent also includes fragrance, pigment, salt and pH regulator.

[0024] In the present invention, the rare earth liquid detergent may further include a chelating agent, and the chelating agent is preferably ethylenediaminetetraacetic acid (EDTA) or citrate, which is used to improve the chelating ability of calcium and magnesium ions in the washing water and enhance the washing effect; in the present invention, the rare earth liquid detergent may further include a builder, and the builder is preferably sodium carbonate, sodium silicate or type A zeolite, which is used to enhance the decontamination ability; in the present invention, the rare earth liquid detergent may further include a whitening agent, and the whitening agent is preferably sodium perborate or sodium percarbonate, which is used to improve the whiteness of clothes; a fluorescent whitening agent, and the fluorescent whitening agent is preferably a diphenylene disulfonic acid derivative, which is used to enhance the visual effect of clothes; in the present invention, the rare earth liquid detergent may further include a stabilizer, and the stabilizer is preferably polyvinyl pyrrolidone or polyvinyl pyrrolidone. Vinyl alcohol is used to improve the stability of the detergent and prevent the decomposition of the active ingredients; in the present invention, the rare earth liquid detergent may also include a dispersant, which is preferably a polycarboxylate or a sulfonated succinate, for improving the dispersibility of the active ingredients in the detergent; in the present invention, the rare earth liquid detergent may also include an antistatic agent, which is preferably a cationic guar gum or a quaternary ammonium salt compound, for reducing the electrostatic adsorption of clothing; in the present invention, the rare earth liquid detergent may also include a softener, which is preferably polydimethylsiloxane or fatty alcohol polyoxyethylene ether, for making clothing softer and more comfortable; in the present invention, the rare earth liquid detergent may also include a color retaining agent, which is preferably titanium dioxide or iron oxide, for protecting the color of clothing and preventing fading. These additional components can further improve the performance of the detergent and meet different washing needs.

[0025] The present invention also provides a method for preparing the rare earth liquid detergent, comprising the following steps: The surfactant is dissolved in water, and then other components except salt and pH adjuster are added, and after sufficient stirring and dissolution, the pH adjuster is added to adjust the pH to 6.5-8.0, and finally salt is added to obtain the rare earth liquid detergent.

[0026] The technical solutions provided by the present invention are described in detail below in conjunction with the embodiments, but they should not be construed as limiting the protection scope of the present invention.

[0027] Example 1 Weigh 100g of ethoxylated sodium alkyl sulfate, 50g of alkylbenzene sulfonic acid, 50g of fatty alcohol polyoxyethylene ether, and 30g of cocamidopropyl betaine, add them to 750g of deionized water, stir thoroughly to dissolve, then add 2g of glycine cerium complex, 0.5g of rutin-lanthanum complex, 5g of polyethylene glycol PEG200, 15g of sodium polyacrylate, 7g of complex enzyme (25% amylase-25% cellulase-25% lipase-25% protease), 3g of flavor, and 0.01g of pigment, stir thoroughly to dissolve and mix evenly, add a certain amount of flake caustic soda, adjust the pH to 6.5-8.0, add 30g of salt and continue stirring for about 1h to obtain a rare earth liquid detergent.

[0028] The antibacterial and antimicrobial effects of the rare earth liquid detergent described in this embodiment were evaluated by QB / T 2738. After testing, the detergent had a bactericidal rate of 95.36% and an antibacterial rate of 80.58% against Staphylococcus aureus.

[0029] Example 2 Weigh 100g of sodium alkyl aryl sulfonate, 80g of sodium cocoyl isethionate, 80g of alkyl glycoside, and 30g of cocamidopropyl betaine, add them to 750g of deionized water, stir thoroughly to dissolve, then add 4g of 5-sulfosalicylic acid-neodymium complex, 2g of oligochitosan samarium complex, 5g of polyethylene glycol PEG200, 12g of sodium polyacrylate, 8g of complex enzyme (50% amylase-50% cellulase), 3g of flavor, and a little pigment, stir thoroughly to dissolve and mix evenly, add a certain amount of flake caustic soda, adjust the pH to 6.5-8.0, add 30g of salt and continue stirring for about 1h to obtain a rare earth liquid detergent.

[0030] The detergent has a bactericidal rate of 92.55% and an antibacterial rate of 83.36% against Staphylococcus aureus.

[0031] Example 3 Weigh 50g of sodium α-olefin sulfonate, 100g of sodium dodecyl sulfate, 60g of fatty acyldiethanolamine, and 50g of dodecyldimethylamine oxide, add them to 750g of deionized water, stir thoroughly to dissolve, then add 3g of 2-chloroisonicotinic acid-europium complex, 3g of furan carboxaldehyde salicyloylhydrazone-yttrium complex, 5g of glycerol, 12g of sodium polyacrylate, 10g of complex enzyme (50% lipase-50% protease), 3g of flavor, and a little pigment, stir thoroughly to dissolve and mix evenly, add a certain amount of flake caustic soda, adjust the pH to 6.5-8.0, add 30g of salt and continue stirring for about 1h to obtain a rare earth liquid detergent.

[0032] The detergent has a bactericidal rate of 94% and an antibacterial rate of 90% against Staphylococcus aureus.

[0033] Example 4 Weigh 50g of fatty acid methyl ester sulfonate, 50g of sodium stearate, 30g of dodecylphenol polyoxyethylene ether, and 30g of sodium lauryl aminopropionate, add them to 750g of deionized water, stir and dissolve them thoroughly, then add 2g of cinnamic acid-8-hydroxyquinoline-ytterbium complex, 3g of curcumin aniline Schiff base-lanthanum complex, 5g of polyethylene glycol PEG200, 12g of sodium polyacrylate, 7g of complex enzyme (50% cellulase-50% lipase), 3g of flavor, and a little pigment, stir and dissolve them thoroughly, add a certain amount of flake caustic soda, adjust the pH to 6.5-8.0, add 30g of salt and continue stirring for about 1h to obtain a rare earth liquid detergent.

[0034] The detergent has a bactericidal rate of 91.86% and an antibacterial rate of 88.58% against Staphylococcus aureus.

[0035] Example 5 Weigh 80g of ethoxylated alkyl sodium sulfate, 80g of alkylbenzene sulfonic acid, 80g of alcohol ether glycoside, and 30g of cocamidopropyl betaine, add them to 750g of deionized water, stir thoroughly to dissolve, then add 5g of berberine-gadolinium complex, 3g of rhubarb-cerium complex, 5g of glycerol, 12g of sodium polyacrylate, 5g of complex enzyme (50% amylase-50% protease), 3g of flavor, and a little pigment, stir thoroughly to dissolve and mix evenly, add a certain amount of flake caustic soda, adjust the pH to 6.5-8.0, add 30g of salt and continue stirring for about 1h to obtain a rare earth liquid detergent.

[0036] The detergent has a bactericidal rate of 93.52% and an antibacterial rate of 86.65% against Escherichia coli.

[0037] Comparative Example 1 The only difference from Example 1 is that 2 g of glycine cerium complex and 0.5 g of rutin-lanthanum complex are replaced by 2.5 g of cerium nitrate.

[0038] The antibacterial and antimicrobial effects of the rare earth liquid detergent described in this comparative example were evaluated by QB / T 2738. After testing, the bactericidal rate of the detergent against Staphylococcus aureus could reach 75.68%, and the antibacterial rate could reach 62.56%.

[0039] Comparative Example 2 The only difference from Example 2 is that 4 g of 5-sulfosalicylic acid-neodymium complex and 2 g of oligochitosan samarium complex are replaced by 6 g of lanthanum chloride.

[0040] The antibacterial and antimicrobial effects of the rare earth liquid detergent described in this comparative example were evaluated by QB / T 2738. After testing, the bactericidal rate of the detergent against Staphylococcus aureus could reach 72.32%, and the antibacterial rate could reach 55.29%.

[0041] As can be seen from the above embodiments, the rare earth detergent provided by the present invention has significant bactericidal and antibacterial effects. Through comparative experiments, the rare earth liquid detergent of the present invention is superior to other detergents in terms of bactericidal rate and antibacterial rate against Staphylococcus aureus, which indicates that the introduction of rare earth complexes significantly improves the antibacterial properties of the detergent. In addition, the detergent of the present invention can still maintain good bactericidal and antibacterial effects under alkaline conditions, which provides convenience for application in a variety of washing environments. Through the detailed description of the embodiments, the rare earth liquid detergent of the present invention not only has application potential in household washing, but also in industrial washing, such as in the textile industry, it also shows its unique antibacterial treatment advantages, and provides a new solution for the production of textiles with antibacterial functions.

[0042] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A rare earth liquid detergent, characterized in that: The rare earth liquid detergent comprises the following components by weight: 15-30 parts of surfactant, 0.1-1.0 parts of soluble rare earth complex, 0.3-0.8 parts of moisturizer, 0.5-5 parts of anti-redeposition agent, 0.3-1.2 parts of active enzyme and 60-150 parts of water; The soluble rare earth complex is selected from one or more of rare earth carboxylic acid complexes, rare earth amino acid complexes, rare earth polysaccharide complexes, rare earth salicylic acid complexes, rare earth nitrogen heterocyclic complexes, rare earth acylhydrazone complexes, rare earth curcumin complexes and rare earth flavonoid complexes.

2. A rare earth liquid detergent according to claim 1, characterized in that: The surfactant is selected from one or more of anionic surfactants, nonionic surfactants and amphoteric surfactants.

3. A rare earth liquid detergent according to claim 2, characterized in that: The anionic surfactant is selected from one or more of ethoxylated alkyl sodium sulfate, alkylbenzene sulfonic acid, sodium alkyl aryl sulfonate, sodium coconut oil isethionate, sodium α-olefin sulfonate, sodium lauryl sulfate, fatty acid methyl ester sulfonate and sodium stearate.

4. A rare earth liquid detergent according to claim 2, characterized in that: The nonionic surfactant is selected from one or more of fatty acyl diethanolamine, fatty alcohol polyoxyethylene ether, alkyl glycoside, alcohol ether glycoside, dodecylphenol polyoxyethylene ether and nonylphenol polyoxyethylene ether.

5. A rare earth liquid detergent according to claim 2, characterized in that: The amphoteric surfactant is selected from one or more of dodecyl dimethyl amine oxide, cocamidopropyl betaine and sodium lauryl aminopropionate.

6. A rare earth liquid detergent according to claim 1, characterized in that: The active enzyme is selected from one or more of protease, amylase, lipase and cellulase.

7. A rare earth liquid detergent according to claim 1, characterized in that: The humectant is selected from glycerin or polyethylene glycol.

8. A rare earth liquid detergent according to claim 1, characterized in that: The anti-redeposition agent is sodium polyacrylate.

9. A rare earth liquid detergent according to claim 1, characterized in that: The rare earth liquid detergent also includes essence, pigment, salt and pH regulator.

10. The method for preparing the rare earth liquid detergent according to claim 9, characterized in that: The following steps are involved: The surfactant is dissolved in water, and then other components except salt and pH adjuster are added, and after sufficient stirring and dissolution, the pH adjuster is added to adjust the pH to 6.5-8.0, and finally salt is added to obtain the rare earth liquid detergent.