Washable improving auxiliary agent for daily chemical dye and preparation method of washable improving auxiliary agent

Abstract

The invention discloses a washable improving auxiliary agent for daily chemical dye and a preparation method thereof, and belongs to the technical field of daily chemical products. The washable improving auxiliary agent for the daily chemical dye comprises the following raw materials in percentage by weight: 10%-30% of an emulsifier, 5%-10% of an anti-staining agent, 4%-6% of an emulsifying auxiliary agent, 2%-5% of a humectant, 0.1%-3% of a pH regulator, 0.01%-0.02% of a preservative and the balance of deionized water. By adding the washable assistant, the dye can be well dispersed and developed in water, the chromaticity of the original color of the dye is not influenced, and the washable performance of the dye is fully improved. In addition, the adopted biodegradable raw materials are environmentally friendly. The washable lifting auxiliary agent can be applied to improving the washing effect of dye in the daily chemical field of laundry detergent, laundry gel beads, nail polish and children cosmetics. The preparation method is simple, raw materials are uniformly mixed, and the stability is excellent.

Description

Technical Field

[0001] This invention relates to the field of daily chemical product technology, and more specifically, to a washable dye enhancement agent for daily chemical products and its preparation method. Background Technology

[0002] Currently, washable dyes are mainly used in laundry detergent pods, nail polish, children's watercolor pens, and children's makeup. Washable dyes are required to be washable even after drying. However, currently available washable dyes, after staining fibers and skin, still leave varying degrees of color residue after washing. Even using soap and detergent cannot completely remove the stain, so the removal effect is not ideal. Furthermore, using polymer-modified dyes such as polyether dyes is more expensive.

[0003] Existing technologies already disclose water-based washable dye auxiliaries. For example, patent specification CN119504549A discloses a washable ink auxiliary polymer, which, by weight percentage, contains 1.0-5.0 parts of dye, 5.0-10.0 parts of humectant, 0.1-1.0 parts of preservative, 5.0-10.0 parts of washable auxiliary polymer, 0.1-0.5 parts of isomeric alcohol polyether phosphate, and 72.3-88.6 parts of 75% medical alcohol. The polymeric auxiliaries of this invention have high synthesis costs, and the auxiliaries are difficult to degrade in the environment, causing water pollution. For example, patent specification CN118879125A discloses a palm-washable water-based ink, which, by weight percentage, contains 0.1-3% microcapsule dye, 3-5% coating material, 15-25% humectant, 0.5-7.9% sodium dodecylbenzenesulfonate, 0.5-10% resin, 0.1-5% pH adjuster, 0.2-1% bactericide, and the balance being deionized water. Although the additives are relatively environmentally friendly, the ink applied to the hands in this patent cannot be completely removed after repeated rinsing with water for 60 minutes, leaving a small amount of residue.

[0004] Therefore, this application is hereby submitted. Summary of the Invention

[0005] The purpose of this invention is to provide a washable dyeing agent for daily chemical products and its preparation method. This invention uses a co-emulsifier to aid emulsification, allowing the dye to disperse and develop color well in water without affecting the original color saturation. It also significantly improves the washability of the dye, ensuring that no obvious color residue remains after rinsing with water alone. Furthermore, the use of biodegradable co-emulsifiers and emulsifiers makes it environmentally friendly.

[0006] This invention is implemented as follows: In a first aspect, the present invention provides a washable dyeing agent for daily chemical products, the raw materials of which, by weight percentage, include 10%-30% emulsifier, 5%-10% anti-staining agent, 4%-6% emulsifying agent, 2%-5% humectant, 0.1%-3% pH adjuster, 0.01%-0.02% preservative, and the balance being deionized water.

[0007] In an optional embodiment, the emulsifier includes any one or two of the following: sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester, fatty alcohol polyoxyethylene ether, C16-18 alcohol stearate glyceryl ester, hydroxyl synthetic alcohol polyoxyethylene ether, and C8-16 alkyl glycoside.

[0008] In an optional embodiment, the anti-staining agent includes at least one of a water-soluble polybutylene succinate derivative, a polylactic acid modifier, and an amino acid-based surfactant. Preferably, the polybutylene succinate derivative includes at least one of polybutylene adipate succinate, hydroxyl-grafted polybutylene succinate, amino-grafted polybutylene succinate, or a mixture of PBS and starch. Preferably, the polylactic acid modified material includes at least one of PLA-PCL copolymer, PLA-COOH, and PLA-thiol; Preferably, the amino acid-type surfactant includes at least one of sodium cocoyl alanine, sodium lauroyl amphoteric acid, and disodium cocoyl amphoteric acid.

[0009] In an optional embodiment, the emulsifying agent includes any one or two of n-butanol, propylene glycol, polyglycerol ester, linear sodium dodecyl sulfate, sodium dodecylbenzene sulfate, sodium fatty alcohol polyoxyethylene ether sulfate, and linear alkylbenzene sulfonate.

[0010] In an optional embodiment, the moisturizer is a cosmetic-grade moisturizer; Preferably, the cosmetic-grade moisturizer includes any one or two of glycerin, hyaluronic acid, sodium lactate, and sodium pyrrolidone carboxylate.

[0011] In an optional embodiment, the pH adjuster includes any one of citric acid, lactic acid, malic acid, and phosphoric acid; And / or, the pH adjuster has an adjustment range of 6-8.

[0012] In an optional embodiment, the preservative includes any one or two of Nisin, lysozyme, and organic acids.

[0013] Secondly, the present invention provides a method for preparing a washable enhancing agent for daily chemical dyes as described in any of the foregoing embodiments, comprising mixing the raw materials evenly.

[0014] In an optional embodiment, mixing the raw materials uniformly includes: First, the emulsifying agent is sheared, mixed, and dispersed at a first rotation speed to obtain an emulsifying agent dispersion; The emulsifier is added dropwise to the emulsifying agent dispersion under a second rotational shearing condition to obtain a mixed dispersion; The humectant and the preservative were added dropwise to the mixed dispersion under a third rotational speed shear to obtain a homogeneous solution; The deionized water, anti-staining agent, and pH adjuster are added to the homogenized solution, and mixing continues under the condition of fourth rotational speed shear.

[0015] In an optional embodiment, the first rotational speed is 800-1500 r / min, and the dispersion time is 15-20 min; And / or, the second rotational speed is 800-1500 r / min, and the dispersion time is 10-20 min; And / or, the third rotational speed is 500-800 r / min, and the dispersion time is 5-8 min; And / or, the fourth rotation speed is 300-500 r / min, and the dispersion time is 10-15 min.

[0016] Thirdly, the present invention provides a washable dye, which includes a washable enhancing agent for daily chemical dyes as described in any of the foregoing embodiments or a washable enhancing agent for daily chemical dyes prepared by the preparation method of the washable enhancing agent for daily chemical dyes as described in any of the foregoing embodiments. Preferably, the amount of the washable enhancement agent for daily chemical dyes added is 1-5% of the total mass of the washable dyes; Preferably, the washable dye includes laundry detergent, laundry pods, nail polish, or children's makeup.

[0017] The present invention has the following beneficial effects: The washable dye enhancing agent provided by this invention, through the combined emulsification of emulsifiers and emulsifying auxiliaries, allows the dye to disperse and develop color well in water without affecting the original color saturation, thus significantly improving the washability of the dye. Furthermore, it utilizes biodegradable co-emulsifiers, as well as emulsifiers and anti-staining agents, making it environmentally friendly. This washable enhancing agent can be applied to improve the washability of dyes in daily chemical products such as laundry detergents, laundry pods, nail polish, and children's cosmetics. The preparation method of the washable dye enhancing agent provided by this invention is simple, ensuring uniform mixing of the raw materials and exhibiting excellent stability. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A schematic diagram showing the degree of washability discoloration in Experimental Examples 1.1, 1.2, 1.3, and 1.4 (from left to right) provided in this application. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Where specific conditions are not specified in the embodiments, conventional conditions or conditions recommended by the manufacturer shall apply. Reagents or instruments whose manufacturers are not specified are all conventional products that can be purchased commercially.

[0021] This invention provides a washable dyeing agent for daily chemical products, the raw materials of which, by weight percentage, include 10%-30% emulsifier, 5%-10% anti-staining agent, 4%-6% emulsifying agent, 2%-5% humectant, 0.1%-3% pH adjuster, 0.01%-0.02% preservative, and the balance being deionized water.

[0022] In this invention, emulsifiers and emulsifying aids are used in combination for emulsification. The emulsifier emulsifies and disperses oily substances. Many daily chemical dyes (such as lipsticks, foundations, and hair dyes) contain oil-soluble pigments or hydrophobic components. The emulsifier helps these components to be uniformly dispersed in an aqueous system, forming a stable emulsion or suspension, preventing stratification or precipitation. Simultaneously, the emulsifier can encapsulate dye molecules, enhancing their solubility in the water or oil phase, preventing clumping or precipitation, ensuring uniform and long-lasting product color, and extending shelf life. Furthermore, the emulsifier helps oils and dyes quickly emulsify upon contact with water, making them easier to rinse and preventing residue. The emulsifier helps decompose and remove oil-soluble dyes or pigment stains from clothing or tableware, preventing redeposition.

[0023] Emulsifying aids are used to assist emulsifiers in their function. They can optimize emulsification, improve stability, and enhance performance. In particular, emulsifying aids can help emulsifiers disperse hydrophobic components more efficiently, forming finer and more uniform emulsion particles and improving emulsion stability.

[0024] Anti-staining agents form an electrostatic attraction between the positive charge in their structure and the negative charge on the fabric surface, allowing them to adhere to the fabric surface and form a protective film that prevents dye from adsorbing into and penetrating the fabric.

[0025] In this invention, emulsification is achieved through the combined use of emulsifiers, anti-staining agents, and emulsifying auxiliaries, allowing the dye to disperse and develop its color well in water without affecting the original color saturation. Simultaneously, the anti-staining agent firmly adheres to the fabric surface, protecting the fabric from contact with the dye and further improving the washability of the dye.

[0026] The emulsifier includes, but is not limited to, any one or two of the following: sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester, fatty alcohol polyoxyethylene ether, C16-18 alcohol stearate glyceryl ester, hydroxyl synthetic alcohol polyoxyethylene ether, and C8-16 alkyl glycoside.

[0027] Emulsifying agents include, but are not limited to, any one or two of n-butanol, propylene glycol, polyglycerol ester, linear sodium dodecyl sulfate, sodium dodecylbenzene sulfate, sodium fatty alcohol polyoxyethylene ether sulfate, and linear alkylbenzene sulfonates.

[0028] Anti-staining agents include, but are not limited to, at least one of water-soluble polybutylene succinate (PBS) derivatives, polylactic acid (PLA) modifiers, and amino acid-based surfactants.

[0029] Preferably, the polybutylene succinate derivatives include, but are not limited to, polybutylene adipate succinate, hydroxyl-grafted polybutylene succinate, amino-grafted polybutylene succinate, or at least one of a compound PBS and starch mixture; the polybutylene succinate derivatives in this invention are all commercially available, purchased from manufacturers such as Shandong Landian Biotechnology Co., Ltd., Xuke New Materials Co., Ltd., and Meirui New Materials Co., Ltd.

[0030] Preferably, the polylactic acid (PLA) modified materials include, but are not limited to, at least one of PLA-PCL copolymer, PLA-COOH, and PLA-thiol. All PLA modified materials used in this invention are commercially available and purchased from manufacturers such as Shenzhen Guanghua Weiye Co., Ltd., Anzo Chemical Co., Ltd., and Jiangxi Heers Co., Ltd., etc. Preferably, the amino acid-type surfactant includes, but is not limited to, at least one of sodium cocoyl alanine, sodium lauroyl amphoteric acid, and disodium cocoyl amphoteric acid. All amino acid-type surfactants of this invention are commercially available from manufacturers such as Changsha Puji Biotechnology Co., Ltd., Suzhou Aoshi Biotechnology Co., Ltd., and Baifurun Chemical Co., Ltd.

[0031] Moisturizers absorb and lock in moisture, helping dyes to suspend evenly in the liquid and preventing sedimentation and stratification. Moisturizers make washable dyes easier to spread, and they emulsify quickly upon contact with water, facilitating rinsing with warm water and reducing irritation. In this invention, the moisturizer is a cosmetic-grade moisturizer; preferably, the cosmetic-grade moisturizer includes, but is not limited to, any one or two of glycerin, hyaluronic acid, sodium lactate, and sodium pyrrolidone carboxylate.

[0032] pH adjusters can regulate the overall pH of a product, maintaining it within a certain pH range to enhance detergency or reduce irritation. They can also stabilize water-soluble dyes. In this invention, pH adjusters include, but are not limited to, any one of citric acid, lactic acid, malic acid, and phosphoric acid; and / or, the pH adjustment range is 6-8.

[0033] Preservatives are used to prevent microbial growth and extend shelf life. The preservatives in this invention include, but are not limited to, any one or two of Nisin, lysozyme, and organic acids. Nisin, lysozyme, and organic acids are three classes of natural or bio-based preservatives that inhibit microbial growth through different mechanisms, while also ensuring safety and environmental friendliness.

[0034] Furthermore, the present invention also provides a method for preparing the above-mentioned washable enhancing agent for daily chemical dyes, which includes mixing the raw materials evenly, specifically including the following steps: S1. First, the emulsifying agent is sheared, mixed and dispersed at the first rotation speed to obtain an emulsifying agent dispersion; The first rotation speed is 800-1500 r / min, and the dispersion time is 15-20 min. High-speed shear mixing can fully wet and break down the emulsifying agent, avoiding agglomeration when mixed with other components. After shearing the emulsifying agent alone, a uniform and stable base can be formed. By establishing a uniform agent system in advance, the emulsification process is more efficient when adding oil phase or other components, avoiding local uneven concentration and reducing the total process time.

[0035] S2. The emulsifier is added dropwise to the emulsifying agent dispersion under the condition of second rotational speed shearing to obtain a mixed dispersion.

[0036] Adding the emulsifier via dropwise addition ensures slow and uniform mixing. Furthermore, this invention employs a second rotational speed (800-1500 r / min) for 10-20 min of dispersion. This high-speed shearing after emulsifier addition ensures uniform dispersion of emulsifier molecules upon dropwise addition, allowing for rapid adsorption to the oil-water interface and minimizing waste of unadsorbed emulsifier. At lower speeds, emulsifier may accumulate locally, leading to uneven interface coverage, requiring longer to reach equilibrium, or resulting in precipitation. In this invention, the emulsifying aid has already formed a pre-dispersed network structure through high-speed shearing. Maintaining the same or higher rotational speed prevents aid sedimentation or aggregation, ensuring synergistic effects with the emulsifier. It also promotes the formation of an emulsifier-emulsifying aid composite interfacial film, enhancing droplet anti-agglomeration ability. Continuing high-speed shearing during the mixing process further breaks down droplets, improving stability.

[0037] It should be understood that emulsifiers will generate some foam during high-speed shearing. During the preparation process, commonly available defoamers can be added to defoam. This application does not impose specific restrictions on the amount and type of defoamer used; conventional operations can be followed.

[0038] S3. The humectant and preservative are added dropwise to the mixed dispersion under the condition of third rotation speed shear to obtain a homogeneous solution; When adding the humectant and preservative, shear mixing is performed at a third rotation speed slightly lower than the first and / or second rotation speeds. The humectant is added dropwise to ensure thorough mixing of the humectant and preservative, forming a homogeneous solution. The third rotation speed is 500-800 r / min, and the dispersion time is 5-8 min.

[0039] S4. Add deionized water, anti-staining agent and pH adjuster to the homogenized solution, and continue mixing under the condition of fourth rotation speed shear.

[0040] After a homogeneous solution has been formed in step S3, deionized water, anti-staining agent, and pH adjuster are added. Sufficient mixing can be achieved at a low rotation speed. In this invention, the fourth rotation speed is 300-500 r / min, and the dispersion time is 10-15 min.

[0041] Thirdly, the present invention provides a washable dye, which includes a washable enhancing agent for daily chemical dyes as described in any of the foregoing embodiments or a washable enhancing agent for daily chemical dyes prepared by the preparation method of the washable enhancing agent for daily chemical dyes as described in any of the foregoing embodiments. Preferably, the amount of the washable enhancement agent for daily chemical dyes added is 1-5% of the total mass of the washable dyes; Preferably, washable dyes include laundry detergent, laundry pods, nail polish, or children's makeup.

[0042] The features and performance of the present invention will be further described in detail below with reference to embodiments.

[0043] Example 1 This embodiment provides a washable enhancement agent for daily chemical dyes, the preparation method of which includes the following steps: S1. Add 4g of emulsifying agent (sodium dodecyl sulfate) to a 1L beaker, and simultaneously use a small high-speed shearing machine to shear evenly at a rate of 1000r / min and stir for 18min. S2. After mixing evenly, add 10g of emulsifier (fatty alcohol polyoxyethylene ether) and disperse and stir using a disperser at a rate of 1200r / min for 12min. S3. After stirring evenly, add 2g of glycerin and 0.01g of biological preservative (Nisin), and disperse and stir at a speed of 500r / min for 5min using a disperser; S4. Finally, add deionized water to 100g, stir at 500r / min for 12min, then add 5g of anti-staining agent (polybutylene adipate succinate), and gradually adjust the pH by adding pH adjuster (citric acid). Test with a pH meter, and if the pH range is maintained at 6-7, it is a washable auxiliary product.

[0044] Example 2 This embodiment provides a washable enhancement agent for daily chemical dyes, the preparation method of which includes the following steps: S1. Add 6g of emulsifying agent (sodium fatty alcohol polyoxyethylene ether sulfate) to a 1L beaker, and simultaneously use a small high-speed shear machine to shear evenly at a rate of 1000r / min and stir for 20min. S2. After stirring evenly, add 12g of emulsifier (polyoxyethylene sorbitan fatty acid ester) and disperse and stir with a disperser at a rate of 1200r / min for 15min. S3. After stirring evenly, add 2.5g of hyaluronic acid and 0.013g of biological preservative (Nisin), and disperse and stir at a speed of 800r / min for 8min using a disperser; S4. Finally, add deionized water to 100g, stir at 600r / min for 10min, then gradually add 7g of anti-staining agent (PLA-PCL copolymer) with pH adjuster (citric acid) dropwise. Test with a pH meter. If the pH range is maintained at 6-7, it is a washable auxiliary product.

[0045] Example 3 This embodiment provides a washable enhancement agent for daily chemical dyes, the preparation method of which includes the following steps: S1. Add 5.2g of emulsifying agent (polyglycerol ester) to a 1L beaker, and simultaneously use a small high-speed shearing machine to shear evenly at a rate of 1200r / min and stir for 15min. S2. After stirring evenly, add 20g of emulsifier (polyoxyethylene sorbitan fatty acid ester) and disperse and stir using a disperser at a rate of 1200r / min for 10min. S3. After stirring evenly, add 2g of glycerin and 0.01g of biological preservative (Nisin), and disperse and stir at a speed of 800r / min for 6min using a disperser; S4. Finally, add deionized water to 100g, stir at 600r / min for 15min, then gradually add 10g of anti-staining agent (sodium cocoyl alanine) with pH adjuster (citric acid) to adjust the pH. Test with a pH meter. If the pH range is maintained at 6-7, it is a washable auxiliary product.

[0046] Comparative Example 1 This comparative example is basically the same as Example 1, except that the emulsifier of Example 1 is omitted in this comparative example.

[0047] Comparative Example 2 This comparative example is basically the same as Example 1, except that the emulsifying agent of Example 1 is omitted in this comparative example.

[0048] Comparative Example 3 This comparative example is basically the same as Example 1, except that the anti-staining agent of Example 1 is omitted in this comparative example.

[0049] Comparative Example 4 This comparative example is basically the same as Example 1, except that the amount of components used in this comparative example is different: 1g of emulsifying aid, 5g of emulsifier, and 2g of anti-staining agent.

[0050] Comparative Example 5 This comparative example is basically the same as Example 1, except that the preparation method is different. In this comparative example, all raw materials are directly placed in a mixing container and mixed evenly at 1000 r / min.

[0051] Comparative Example 6 This comparative example is basically the same as Example 1, except that the preparation method is different in this comparative example. The rotation speed in steps S1 and S2 in this comparative example is 600 r / min.

[0052] Comparative Example 7 This comparative example is basically the same as Example 1, except that the preparation method is different in this comparative example. The rotation speed in steps S1 and S2 in this comparative example is 2000 r / min.

[0053] Experimental Example 1 1g of rose red dye with patent number US005250708A was selected, and the daily chemical dye washable enhancement agent (0g, 1g, 3g, 5g) of Example 1 was added. The transparent laundry detergent base was added to 100g, and the mixture was dispersed and stirred with a high-speed disperser until the color of the base surface was uniform. The stirred base material was taken for use and recorded as Experiment 1.1-Experiment 1.4 respectively.

[0054] Cut a piece of six-fiber fabric (arranged from top to bottom: wool, acrylic, polyester, nylon, cotton, acetate fiber), approximately 10cm long and 3cm wide. Soak the fabric in a colored liquid base for 24 hours, then remove it and hand-wash it under running water until no color is washed out. Observe the staining. Subsequently, determine the degree of color change of the six-fiber fabric according to GB / T250-2008 "Textiles - Tests for Color Fastness - Gray Scale for Color Change". The washability of the dye on the six-fiber fabric is determined by the degree of color change (see GB / T250-2008 "Textiles - Tests for Color Fastness - Gray Scale for Color Change"). Figure 1 The solubility of dyes in a formulation is determined by observing how well the dye dissolves in the formulation.

[0055]

[0056] Note: Washability is determined based on a five-level, nine-grade grading system for the degree of color change. Dye solubility is as follows: "++++" indicates the dye is completely dissolved in the formula; "+++" indicates slight precipitation in the formula; "++" indicates significant precipitation in the formula; "+" indicates the dye is essentially insoluble in the formula.

[0057] As can be seen from the table above, based on the test results, the addition of the washable enhancement agent prepared by this method can greatly improve the washability of daily chemical dyes on fabrics. In addition, this product meets the domestic requirements for green, environmentally friendly and biodegradable use, and has a very good promoting effect on the daily chemical dye industry.

[0058] Experimental Example 2 1g of rose red dye with patent number US005250708A was selected, and 3g of the daily chemical dye washable enhancement agent of Example 1 and Comparative Examples 1-7 was added. The transparent laundry detergent matrix was added to 100g, and the mixture was dispersed and stirred with a high-speed disperser until the color of the matrix surface was uniform. The stirred matrix material was taken for use and recorded as Experiment 2.1-Experiment 2.8 respectively.

[0059] Cut a piece of six-fiber fabric (arranged in the order of wool, acrylic, polyester, nylon, cotton, and acetate fiber), approximately 10cm long and 3cm wide. Soak the six-fiber fabric in a colored liquid base for 24 hours, then remove it and hand wash it with running water until the water is clear of color. Observe the staining and compare the washability of the dye on the six-fiber fabric with the solubility of the dye in the formula.

[0060]

[0061] Note: Washability is determined based on a five-level, nine-grade grading system for the degree of color change. Dye solubility is as follows: "++++" indicates the dye is completely dissolved in the formula; "+++" indicates slight precipitation in the formula; "++" indicates significant precipitation in the formula; "+" indicates the dye is essentially insoluble in the formula.

[0062] As can be seen from the table above, the addition of the washability enhancement agent prepared by this method can greatly improve the washability of daily chemical dyes on fabrics. Among them, the emulsifying agent, emulsifier, anti-staining agent in the formula, as well as the content of each component and the stirring method during preparation, all play an important role in improving the washability of fabrics.

[0063] In Comparative Examples 1-3, the emulsifier, emulsifying aid, and anti-staining agent were omitted, respectively. It can be seen that the omission of the emulsifier and emulsifying aid has a significant impact on washability and solubility. Omitting either one reduces washability from 5 to 1 and solubility to "+". Omitting the anti-staining agent has little effect on solubility, but significantly reduces washability. Since Comparative Examples 1-3 omit the emulsifier, emulsifying aid, and anti-staining agent, and these three agents need to work synergistically to improve washability, the washability reduction in Comparative Examples 1, 2, and 3 is significant. In Comparative Example 4, reducing the amount of emulsifier, emulsifying aid, and anti-staining agent leads to a significant decrease in both washability and solubility, proving that the content of the components in this application is crucial to the final effect. Comparative Examples 5-7 changed the mixing method and mixing speed, and their effects were significantly lower than in Example 1. This is because this application has certain limitations on the mixing order and speed of the raw materials during the preparation process; when these limitations are not met, the effect is unsatisfactory.

[0064] In summary, the washable dye enhancement agent provided by this invention, through the combined emulsification of emulsifiers and emulsifying auxiliaries, allows the dye to disperse and develop color well in water without affecting the original color saturation, thus significantly improving the washability of the dye. Furthermore, the use of biodegradable co-emulsifiers, emulsifiers, and anti-staining agents makes it environmentally friendly. This washable enhancement agent can be applied to improve the washability of dyes in daily chemical products such as laundry detergents, laundry pods, nail polish, and children's cosmetics. The preparation method of the washable dye enhancement agent provided by this invention is simple, ensuring uniform mixing of the raw materials and exhibiting excellent stability.

[0065] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A washable enhancement agent for daily chemical dyes, characterized in that, Its raw materials, by weight percentage, include 10%-30% emulsifier, 5%-10% anti-staining agent, 4%-6% emulsifying aid, 2%-5% humectant, 0.1%-3% pH adjuster, 0.01%-0.02% preservative, and the balance deionized water.

2. The washable enhancement agent for daily chemical dyes according to claim 1, characterized in that, The emulsifier includes any one or two of the following: sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester, fatty alcohol polyoxyethylene ether, C16-18 alcohol glyceryl stearate, hydroxyl synthetic alcohol polyoxyethylene ether, and C8-16 alkyl glycoside.

3. The washable enhancement agent for daily chemical dyes according to claim 1, characterized in that, The anti-staining agent includes at least one of water-soluble polybutylene succinate derivatives, polylactic acid modifiers, and amino acid-based surfactants. Preferably, the polybutylene succinate derivative includes at least one of polybutylene adipate succinate, hydroxyl-grafted polybutylene succinate, amino-grafted polybutylene succinate, or a mixture of PBS and starch. Preferably, the polylactic acid modifier includes at least one of PLA-PCL copolymer, PLA-COOH, and PLA-thiol; Preferably, the amino acid-type surfactant includes at least one of sodium cocoyl alanine, sodium lauroyl amphoteric acid, and disodium cocoyl amphoteric acid.

4. The washable enhancing agent for daily chemical dyes according to claim 1, characterized in that, The emulsifying agent includes any one or two of n-butanol, propylene glycol, polyglycerol ester, linear sodium dodecyl sulfate, sodium dodecylbenzene sulfate, fatty alcohol polyoxyethylene ether sulfate, and linear alkylbenzene sulfonate.

5. The washable enhancing agent for daily chemical dyes according to claim 1, characterized in that, The moisturizer is a cosmetic-grade moisturizer; Preferably, the cosmetic-grade moisturizer includes any one or two of glycerin, hyaluronic acid, sodium lactate, and sodium pyrrolidone carboxylate.

6. The washable enhancing agent for daily chemical dyes according to claim 1, characterized in that, The pH adjuster includes any one of citric acid, lactic acid, malic acid, and phosphoric acid; And / or, the pH adjuster has an adjustment range of 6-8; the preservative includes any one or two of Nisin, lysozyme, and organic acids.

7. A method for preparing a washable enhancing agent for daily chemical dyes as described in any one of claims 1-6, characterized in that, It includes mixing the raw materials evenly.

8. The method for preparing the washable enhancing agent for daily chemical dyes according to claim 7, characterized in that, Mixing the raw materials evenly includes: First, the emulsifying agent is sheared, mixed, and dispersed at a first rotation speed to obtain an emulsifying agent dispersion; The emulsifier is added dropwise to the emulsifying agent dispersion under a second rotational shearing condition to obtain a mixed dispersion; The humectant and the preservative were added dropwise to the mixed dispersion under a third rotational speed shear to obtain a homogeneous solution; The deionized water, anti-staining agent, and pH adjuster are added to the homogenized solution, and mixing continues under a fourth rotational speed shearing condition.

9. The method for preparing the washable enhancing agent for daily chemical dyes according to claim 8, characterized in that, The first rotational speed is 800-1500 r / min, and the dispersion time is 15-20 min; And / or, the second rotational speed is 800-1500 r / min, and the dispersion time is 10-20 min; And / or, the third rotational speed is 500-800 r / min, and the dispersion time is 5-8 min; And / or, the fourth rotation speed is 300-500 r / min, and the dispersion time is 10-15 min.

10. A washable dye, characterized in that, It includes the washable enhancement agent for daily chemical dyes as described in any one of claims 1-6, or the washable enhancement agent for daily chemical dyes prepared by the preparation method of the washable enhancement agent for daily chemical dyes as described in any one of claims 7-9; Preferably, the amount of the washable enhancement agent for daily chemical dyes added is 1-5% of the total mass of the washable dyes; Preferably, the washable dye includes laundry detergent, laundry pods, nail polish, or children's makeup.

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