Rare earth liquid softener and preparation method thereof

Abstract

The invention provides a rare earth liquid softener and a preparation method thereof, and belongs to the technical field of rare earth bactericidal bacteriostatic agents. According to the rare earth liquid softener provided by the invention, the softener is endowed with excellent antibacterial and bacteriostatic ability due to the addition of the rare earth complex, the survival rate of harmful bacteria is effectively reduced, and additional health protection is provided. Meanwhile, the formula of the softener strictly follows the environmental protection principle, the selected raw materials are environmentally friendly and non-toxic, it is ensured that the comfort of clothes is improved, meanwhile, the softener is harmless to the human body and the environment, and the requirements of modern consumers for green products are met. The softener provided by the invention is scientific in formula design, ensures the safety and reliability of the product, provides a brand-new solution for clothing care due to the characteristics of high efficiency, environmental protection and safety, is suitable for wide fabric types, and meets the requirements of different users.

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 softener and a preparation method thereof. Background Art

[0002] Softeners are chemical products used to improve the feel of fabrics, reduce static electricity, and make clothing softer and more comfortable. They usually contain ingredients such as surfactants, thickeners, fragrances, and preservatives. Surfactants are the most critical ingredients in softeners. They can reduce the surface tension of water, allowing the softener to be evenly distributed on the fibers of clothing, forming a protective film that reduces friction between fibers, thereby improving the softness and smoothness of the fabric. Thickeners are used to adjust the viscosity of softeners to make them easier to use, and also help improve the stability of the product. Fragrances give softeners a pleasant smell to enhance the user experience. Preservatives are used to extend the shelf life of the product and prevent the growth of microorganisms.

[0003] In terms of antibacterial properties, traditional softeners often have no or only limited antibacterial effects. With the pursuit of healthy life, the market demand for softeners with antibacterial functions is growing. However, the antibacterial properties of softeners in the prior art still need to be optimized. For example, Chinese patent CN107761394A discloses a fabric softener, which is composed of the following raw materials: 3 parts of flavor, 5-9 parts of ester quaternary ammonium salt, 25 parts of softener, 2-5 parts of ethylene glycol, 13-17 parts of diethylene glycol polydimethylsiloxane, 1-3 parts of penetrant, 1-1.5 parts of preservative, and the rest is deionized water. The softener of the invention is used after washing clothes to make the clothes softer and more comfortable. It can change the ionicity of the surface of clothes, making clothes easier to smooth, but it does not have antibacterial properties.

[0004] Therefore, the antibacterial properties of fabric softeners in the prior art need to be improved to meet consumers' higher requirements for hygiene and health. Summary of the invention

[0005] The object of the present invention is to provide a rare earth liquid softener having better antibacterial and antimicrobial 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 softener, which comprises the following components by weight: 3-10 parts of cationic surfactant, 0.1-3.0 parts of soluble rare earth complex, 1.0-5.0 parts of thickener, 0.1-1.0 parts of defoamer 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 cationic surfactant is selected from one or more of quaternary ammonium salt type cationic surfactants, amine salt type cationic surfactants, heterocyclic type cationic surfactants, and onium salt type cationic surfactants.

[0008] Preferably, the thickener is selected from natural thickeners or synthetic thickeners.

[0009] Preferably, the natural thickener is one or more of starch, cellulose and casein.

[0010] Preferably, the synthetic thickener is one or more of sodium polyacrylate, polyoxyethylene, and polyvinyl pyrrolidone.

[0011] Preferably, the defoamer is selected from one or more of an organosilicon defoamer, a polyether defoamer, a composite defoamer and a soap-based defoamer.

[0012] Preferably, the rare earth liquid softener also includes essence, pigment and starch.

[0013] The present invention also provides a method for preparing the rare earth liquid softener, comprising the following steps: The other components except starch are fully dissolved, and then starch is added and mixed to obtain the rare earth liquid softener.

[0014] Technical effects and advantages of the present invention: The rare earth liquid softener of the present invention has a high sterilization rate against harmful bacteria such as Staphylococcus aureus and Escherichia coli, effectively protecting 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.

[0015] In the rare earth liquid softener provided by the present invention, the addition of rare earth complexes endows the softener with excellent antibacterial and antibacterial capabilities, effectively reduces the survival rate of harmful bacteria, and provides additional health protection. At the same time, the formula of the softener strictly follows the environmental protection principle, and the selected raw materials are environmentally friendly and non-toxic, ensuring that while improving the comfort of clothing, it is harmless to the human body and the environment, meeting the needs of modern consumers for green products. The formula design of the softener of the present invention is scientific, ensuring the safety and reliability of the product, and with its high efficiency, environmental protection, and safety characteristics, it provides a new solution for clothing care, is applicable to a wide range of fabric types, and meets the needs of different users. DETAILED DESCRIPTION

[0016] The present invention provides a rare earth liquid softener, which comprises the following components by weight: 3-10 parts of cationic surfactant, 0.1-3.0 parts of soluble rare earth complex, 1.0-5.0 parts of thickener, 0.1-1.0 parts of defoamer 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.

[0017] 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.

[0018] 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).

[0019] In the present invention, the cationic surfactant is selected from one or more of quaternary ammonium salt type cationic surfactants, amine salt type cationic surfactants, heterocyclic type cationic surfactants, and onium salt type cationic surfactants. The quaternary ammonium salt type cationic surfactants of the present invention preferably include hexadecyltrimethylammonium chloride (DTAB), octadecyldimethylbenzylammonium chloride (CTAB), dodecyltrimethylammonium chloride, etc., the amine salt type cationic surfactants preferably include stearamidopropyl dimethylamine, oleamidopropyl dimethylamine, cocoamidopropyl dimethylamine, etc., the heterocyclic type cationic surfactants preferably include imidazoline, pyridine, quinoline surfactants, etc., the onium salt type cationic surfactants preferably include benzylbenzyl ammonium chloride, alkylbenzyl ammonium chloride, etc.

[0020] In the present invention, the thickener is selected from a natural thickener or a synthetic thickener. Preferably, the natural thickener is one or more of starch, cellulose and casein. Preferably, the synthetic thickener is one or more of sodium polyacrylate, polyoxyethylene and polyvinyl pyrrolidone.

[0021] In the present invention, the defoaming agent is selected from one or more of silicone defoaming agents, polyether defoaming agents, composite defoaming agents and soap-based defoaming agents; the silicone defoaming agent preferably includes polydimethylsiloxane, ethyl silicone oil, methyl silicone oil, etc.; the polyether defoaming agent preferably includes polyoxypropylene glycerol (GP type), polyoxyethylene polyoxypropylene glycerol ether (GPE type), polyether-modified silicone, etc.; the composite defoaming agent preferably includes polyether-modified silicone type, silicone ether type, modified silicone polyether, etc.; the soap-based defoaming agent preferably includes tributyl phosphate, high carbon alcohols, etc.

[0022] In the present invention, the rare earth liquid softener preferably further comprises essence, pigment and starch.

[0023] In the present invention, the rare earth liquid softener may also include the following components: a chelating agent, preferably including ethylenediaminetetraacetic acid (EDTA) or citrate, for improving the chelating ability of calcium and magnesium ions in washing water; a builder, preferably including sodium carbonate or sodium silicate, for enhancing the detergency; a brightener, preferably including sodium perborate or sodium percarbonate, for improving the whiteness of clothes; a fluorescent brightener, preferably including stilbene disulfonic acid derivatives, for improving the visual effect of clothes; a stabilizer, preferably including polyvinyl pyrrolidone or hydroxyethyl cellulose, for improving the stability of the softener; a dispersant, preferably including polycarboxylates or sulfonated succinates, for increasing the active ingredients in the softener. dispersibility; antistatic agent, preferably including cationic guar gum or quaternary ammonium salt compound, used to reduce the electrostatic adsorption of clothing; softener, preferably including polydimethylsiloxane or fatty alcohol polyoxyethylene ether, used to make clothing softer and more comfortable; color protectant, preferably including titanium dioxide or iron oxide, used to protect the color of clothing and prevent fading; pH adjuster, preferably including citric acid or sodium hydroxide, used to adjust the pH value of softener to adapt to different washing conditions; preservative, preferably including sodium benzoate or paraben, used to extend the shelf life of the product; filler, preferably including calcium carbonate or silicate, used to increase the volume of the product and reduce the cost; emulsifier, preferably including Tween or Span, used to improve the mixing stability of oil phase and water phase. These additional components can further enhance the performance of softener and meet different fabric care needs.

[0024] The present invention also provides a method for preparing the rare earth liquid softener, comprising the following steps: The other components except starch are dissolved, and then starch is added and mixed to obtain the rare earth liquid softener.

[0025] The solutions provided by the present invention are described in detail below in conjunction with the embodiments, but they should not be understood as limiting the protection scope of the present invention.

[0026] Example 1 Weigh 80g of octadecyldimethylbenzylammonium chloride, 3g of ethylene glycol siloxane defoamer, 5g of indoleacetic acid-o-phenanthroline-dysprosium complex, 2g of flavor, and 0.01g of pigment, put them in 880g of deionized water, stir them thoroughly to dissolve, then add 30g of cellulose, and continue stirring for about 1h to obtain a rare earth liquid softener.

[0027] The antibacterial and antimicrobial effects of the rare earth liquid softener described in this embodiment were evaluated according to QB / T 2738. After testing, the softener had a bactericidal rate of 92.35% and an antibacterial rate of 85.93% against Escherichia coli.

[0028] Example 2 Weigh 50g of lauryl dimethylamine oxide, 5g of glycerol polyether defoamer, 10g of glycine neodymium complex, 2g of flavor, and a small amount of pigment, put them in 880g of deionized water, stir them thoroughly to dissolve, then add 15g of starch, and continue stirring for about 1h to obtain a rare earth liquid softener.

[0029] The softener has a sterilization rate of 95.65% and an antibacterial rate of 88.47% against Escherichia coli.

[0030] Example 3 Weigh 60g of alkyl imidazoline acetate, 8g of polyoxyethylene glycerol ether defoamer, 8g of oligochitosan samarium (lanthanum) complex, 2g of flavor, and a small amount of pigment, put them in 880g of deionized water, stir them thoroughly to dissolve, then add 40g of sodium polyacrylate, and continue stirring for about 1h to obtain a rare earth liquid softener.

[0031] The softener has a sterilization rate of 93.18% and an antibacterial rate of 90.39% against Escherichia coli.

[0032] Example 4 Weigh 90 g of hexadecylpyridinium bromide, 6 g of polydimethylsiloxane defoamer, 6 g of pyruvic acid-3-methoxybenzoylhydrazone-holmium complex, 2 g of flavor, and a small amount of pigment, put them in 880 g of deionized water, stir them thoroughly to dissolve, then add 20 g of polyvinylpyrrolidone, and continue stirring for about 1 hour to obtain a rare earth liquid softener.

[0033] The softener has a sterilization rate of 90.58% and an antibacterial rate of 82.96% against Escherichia coli.

[0034] Comparative Example 1 The only difference from Example 1 is that 5 g of indoleacetic acid-o-phenanthroline-dysprosium complex is replaced by an equal amount of 5 g of lanthanum nitrate.

[0035] The antibacterial and antimicrobial effects of the rare earth liquid softener described in this comparative example were evaluated by QB / T 2738. After testing, the softener had a bactericidal rate of 72.58% and an antibacterial rate of 56.52% against Staphylococcus aureus.

[0036] As can be seen from the above embodiments, the present invention provides a rare earth liquid softener and a preparation method thereof, which has significant antibacterial properties and can effectively inhibit and kill harmful bacteria. By using a specific rare earth complex, the softener of the present invention not only has the basic performance of improving the softness and smoothness of the fabric, but also gives the fabric antibacterial function, meeting consumers' higher requirements for health and hygiene. In addition, the preparation method of the present invention is simple and easy to implement, cost-effective, and suitable for large-scale production. The test results of the embodiments show that the bactericidal rate and antibacterial rate of the rare earth liquid softener of the present invention on Escherichia coli have reached a high level, proving its effectiveness and superiority in practical applications.

[0037] 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 softener, characterized in that: The rare earth liquid softener comprises the following components by weight: 3-10 parts of cationic surfactant, 0.1-3.0 parts of soluble rare earth complex, 1.0-5.0 parts of thickener, 0.1-1.0 parts of defoamer 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 softener according to claim 1, characterized in that: The cationic surfactant is selected from one or more of quaternary ammonium salt type cationic surfactants, amine salt type cationic surfactants, heterocyclic type cationic surfactants, and onium salt type cationic surfactants.

3. A rare earth liquid softener according to claim 1, characterized in that: The thickener is selected from natural thickeners or synthetic thickeners.

4. A rare earth liquid softener according to claim 3, characterized in that: The natural thickener is one or more of starch, cellulose and casein.

5. A rare earth liquid softener according to claim 3, characterized in that: The synthetic thickener is one or more of sodium polyacrylate, polyoxyethylene and polyvinyl pyrrolidone.

6. A rare earth liquid softener according to claim 1, characterized in that: The defoamer is selected from one or more of an organosilicon defoamer, a polyether defoamer, a composite defoamer and a soap-based defoamer.

7. A rare earth liquid softener according to claim 1, characterized in that: The rare earth liquid softener also includes essence, pigment and starch.

8. The method for preparing the rare earth liquid softener according to any one of claims 1 to 7, characterized in that: The following steps are involved: The other components except starch are stirred and dissolved, and then starch is added and mixed to obtain the rare earth liquid softener.