Clothing pre-washing agent capable of efficiently removing heavy dirt and oil stain and preparation method of clothing pre-washing agent

Abstract

The invention provides a clothes pre-washing agent capable of efficiently removing heavy dirt and oil stain and a preparation method of the clothes pre-washing agent. The clothes pre-washing agent for efficiently removing heavy dirt and oil stain comprises the following components in percentage by weight: 5-20% of a surfactant; 3%-10% of an organic solvent; 0.03%-2% of a pH value regulator; 0.1%-3% of a chelating agent; 0.4%-2% of other components (essence, enzyme and the like); and the balance water. The clothes pre-washing agent capable of efficiently removing the heavy dirt and oil stains is neutral in alkalinity, can quickly permeate fibers at normal temperature, brings deep stains to the surfaces of clothes, and efficiently removes the heavy dirt and oil stains, fruit stains, pen stains, blood stains, mud stains, sweat stains, red wine stains, beverage stains and other common heavy dirt stains in life.

Description

Technical Field

[0001] The invention relates to the technical field of daily chemical products, and in particular to a clothing pre-washing agent for efficiently removing heavy dirt and grease, and a preparation method thereof. Background Art

[0002] Clothing pre-cleaner is also known as pre-stain remover, pre-spot remover, collar cleaner, collar cleaner, etc. The light industry standard "Liquid Detergents for Clothing Materials" QB / T 1224-2012 defines clothing pre-cleaner as collar and cuff pre-cleaner: a cleaning product with a certain decontamination ability and using water or a mixture of water and organic solvents as a matrix (excluding non-water-soluble types). Clothing pre-cleaner is generally used before washing the entire clothing. It is sprayed or applied directly to the collar, cuffs or local stained areas of the clothing. After it penetrates for 5 to 10 minutes, the stains are pre-emulsified and loosened for cleaning. If necessary, they can be rubbed slightly. After that, the clothes can be washed by hand or put into the washing machine, and washed in the normal way with detergent. Clothing pre-cleaner is not a dry cleaning agent.

[0003] Clothing pre-washing agent makes up for the lack of ordinary detergents in cleaning and removing local heavy stains on clothes, but it cannot replace the washing effect of ordinary detergents. Because clothing pre-washing agent has a good cleaning and removal effect on local specific stains, and can be used directly without dilution, the concentration is high and the stain removal effect is better. Most of the formulas of clothing pre-washing agent contain alkaline ingredients or enzyme preparations, and it is generally not suitable for washing and removing stains of delicate fabrics such as silk and wool.

[0004] Existing pre-wash products on the market have good stain removal effects on most fruit stains, ballpoint pen stains, blood stains, mud stains, sweat stains, red wine stains and beverage stains, but are not effective in removing stains such as heavy oil stains and markers, and the clothes still have stains after washing. In addition, some products use a large amount of unsafe and environmentally unfriendly organic solvents and the products are highly alkaline, which limits their application in clothing cleaning. Summary of the invention

[0005] In view of the shortcomings of the above-mentioned prior art, the purpose of the present invention is to provide a clothing pre-wash agent for effectively removing heavy greasy stains, which is alkaline and neutral, can quickly penetrate fibers at room temperature, bring deep stains to the surface of clothing, and effectively remove heavy greasy stains, fruit stains, pen stains, blood stains, mud stains, sweat stains, red wine stains, beverage stains and other heavy stains commonly seen in life.

[0006] Another object of the present invention is to provide a method for preparing a clothing pre-washing agent that can efficiently remove heavy dirt and grease.

[0007] In order to solve the above problems, the present invention is implemented through the following technical solutions.

[0008] A clothing pre-washing agent for efficiently removing heavy dirt and grease, comprising the following components in percentage by weight:

[0009]

[0010] Among them, the surfactant is selected from one or more of the anionic surfactants including sodium fatty alcohol polyether sulfate (AES), dodecylbenzene sulfonic acid (LAS), sodium fatty alcohol alkyl sulfonate (RSAS80), sodium α-olefin sulfonate (AOS), and α-sulfonated fatty acid methyl ester (MES), and the non-ionic surfactants including one or more of fatty alcohol polyoxyethylene ether, secondary alcohol AEO-9 (S90), narrow distribution fatty alcohol polyoxyethylene ether, alkyl polyglycoside (APG), and fatty acid methyl ester ethoxylate (FMEE).

[0011] Since the clothing pre-wash agent acts directly on the stains when used without dilution, the surfactant concentration is high (much higher than the critical micelle concentration cmc), and the emulsification and solubilization effects are stronger during the stain removal process, and the stain removal efficiency is higher. The solubilization ability of non-ionic surfactants is stronger than that of anionic surfactants; therefore, in order to achieve better oil removal ability, a large number of special non-ionic surfactants with strong solubilization ability and permeability are selected as the main surfactants in this invention, and the specific ratio allows the invention to penetrate clothing and emulsify grease at room temperature to achieve the effect.

[0012] The organic solvent is selected from one or more of propylene glycol, isohexylene glycol, isopropanol, propylene glycol n-butyl ether, and dipropylene glycol monobutyl ether. The short-chain alcohol ether solvent is mixed with other solvents to improve the effect of dissolving and removing stubborn stains.

[0013] The pH value regulator is selected from one or more of citric acid and its salts, and triethanolamine. The invention controls the pH value (1% solution) within the range of 7-8, and the weak alkalinity ensures safety and mildness while helping to remove oil stains.

[0014] The chelating agent is selected from citrate, sodium gluconate, tetrasodium glutamate N,N-diacetate (GLDA), and methylglycine diacetate. This type of chelating agent can chelate metal ions such as calcium and magnesium, soften hard water, prevent the formation of insoluble deposits, and improve the cleaning effect of surfactants.

[0015] The other ingredients include 0.05%-1% preservatives, 0.2%-0.9% enzyme preparations (one or more of Yiduoli's protease, cellulase, and lipase), and 0.1% fragrance. Protease catalyzes the hydrolysis of proteins to decompose these stubborn stains into smaller peptide chains or amino acids, which are easier to be washed away by surfactants, thereby improving the cleaning effect.

[0016] Unless otherwise specified, the above-mentioned raw materials are conventional commercially available products.

[0017] Furthermore, the above-mentioned clothing pre-washing agent for efficiently removing heavy dirt and grease comprises the following formula ingredients in percentage by weight:

[0018] Phase A: water balance, 1-2% glutamic acid N, N-diacetate tetrasodium (GLDA), 5% dipropylene glycol monobutyl ether or 3% isohexylene glycol or 3% dipropylene glycol monobutyl ether, 3% isohexylene glycol;

[0019] Phase B: 5% sodium alcohol polyether sulfate (AES), and / or 5-10% fatty alcohol polyoxyethylene ether, and 3-10% narrow distribution fatty alcohol polyoxyethylene ether, and / or 2-3% sodium fatty alcohol alkyl sulfonate, and / or 2-4% secondary alcohol AEO-9;

[0020] Phase C: 0.1% flavor, 0.05-1% preservative, 0.3-1% protease, and appropriate amount of pH adjuster.

[0021] Furthermore, the above-mentioned clothing pre-washing agent for efficiently removing heavy dirt and grease comprises the following formula ingredients in percentage by weight:

[0022] Phase A: water balance, 1-2% glutamic acid N, N-diacetate tetrasodium (GLDA), 5% dipropylene glycol monobutyl ether, or 3% isohexylene glycol, or 3% dipropylene glycol monobutyl ether, 3% isohexylene glycol;

[0023] Phase B: 5% sodium alcohol polyether sulfate (AES), 5-10% fatty alcohol polyoxyethylene ether, 3-10% narrow distribution fatty alcohol polyoxyethylene ether, 2-3% sodium fatty alcohol alkyl sulfonate, 2-4% secondary alcohol AEO-9;

[0024] Phase C: 0.1% flavor, 0.05-1% preservative, 0.3-1% protease, and appropriate amount of pH adjuster.

[0025] Furthermore, the above-mentioned clothing pre-washing agent for efficiently removing heavy dirt and grease comprises the following formula ingredients in percentage by weight:

[0026] Phase A: water balance, 1-2% glutamic acid N, N-diacetate tetrasodium (GLDA), 5% dipropylene glycol monobutyl ether, or 3% isohexylene glycol, or 3% dipropylene glycol monobutyl ether, 3% isohexylene glycol;

[0027] Phase B: 5-10% fatty alcohol polyoxyethylene ether, 3-10% narrow distribution fatty alcohol polyoxyethylene ether, 2-3% sodium fatty alcohol alkyl sulfonate;

[0028] Phase C: 0.1% flavor, 0.05-1% preservative, 0.3-1% protease, and appropriate amount of pH adjuster.

[0029] Furthermore, the above-mentioned clothing pre-washing agent for efficiently removing heavy dirt and grease comprises the following formula ingredients in percentage by weight:

[0030] Phase A: water balance, 1-2% glutamic acid N, N-diacetate tetrasodium (GLDA), 5% dipropylene glycol monobutyl ether, or 3% isohexylene glycol, or 3% dipropylene glycol monobutyl ether, 3% isohexylene glycol;

[0031] Phase B: 5% sodium alcohol polyether sulfate (AES), 5-10% alcohol polyoxyethylene ether, 3-10% narrow distribution alcohol polyoxyethylene ether, 2-4% secondary alcohol AEO-9;

[0032] Phase C: 0.1% flavor, 0.05-1% preservative, 0.3-1% protease, and appropriate amount of pH adjuster.

[0033] The present invention also provides a method for preparing the above-mentioned clothing pre-washing agent for efficiently removing heavy dirt and oil stains, comprising the following steps:

[0034] Step S1: adding the phase A chelating agent and the organic solvent into a weighed water container under low-speed stirring to prepare a first mixed material;

[0035] Step S2: Under good stirring, add the surfactant of phase B to the first mixed material in sequence (depending on the dissolution, it can be homogenized at a low speed or appropriately heated to 60° C. to accelerate the dissolution) and stir and dissolve until it is uniform and transparent to prepare the second mixed material;

[0036] Step S3: stirring the second mixed material, other ingredients in phase C and the pH adjuster until they are evenly transparent to prepare a third mixed material;

[0037] Step S4: After the physical and chemical indicators are tested to be qualified, the material is filtered out with a 1000-mesh filter cloth, sealed and left to stand; after the micro-inspection is qualified, the material is disinfected and filled to obtain the finished product of the clothing pre-washing agent.

[0038] The pH value of the laundry pre-wash agent (1% solution) is controlled within the range of 7-8.

[0039] By means of the above technical solution, the beneficial effects of the present invention are:

[0040] The present invention provides a clothing pre-washing agent for efficiently removing heavy greasy stains and a preparation method thereof. The alkalinity is neutral, and anionic and nonionic surfactants in different proportions are specially designed. The pre-washing agent can quickly penetrate fibers at room temperature, bring deep-seated stains to the surface of clothing, and efficiently remove heavy greasy stains, fruit stains, pen stains, blood stains, mud stains, sweat stains, red wine stains, beverage stains and other common heavy stains in life. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 and Figure 2 They are the instant spray-on of Example 4, Comparative Example 1 and the competitor's product, and the comparison charts before and after cleaning of the actual use test results;

[0042] Figure 3 and Figure 4 They are respectively the spray-and-use examples 1, 2 and 3, and the comparison charts of the actual use test results before and after cleaning. DETAILED DESCRIPTION

[0043] The present invention provides a clothing pre-washing agent for efficiently removing heavy dirt and grease and a preparation method thereof. The clothing pre-washing agent for efficiently removing heavy dirt and grease comprises the following components by weight percentage: 5% to 20% surfactant; 3% to 10% organic solvent; 0.03% to 2% pH value regulator; 0.1% to 3% chelating agent; 0.4% to 2% other ingredients (essence, enzyme, etc.); and the balance water.

[0044] The clothing pre-washing agent for efficiently removing heavy greasy stains of the present invention is alkaline and slightly neutral, can quickly penetrate fibers at room temperature, bring deep-seated stains to the surface of clothing, and efficiently remove heavy greasy stains, fruit stains, pen stains, blood stains, mud stains, sweat stains, red wine stains, beverage stains and other heavy stains commonly seen in life.

[0045] Example 1

[0046] This embodiment provides a clothing pre-washing agent that can efficiently remove heavy dirt and grease. The weight percentages of the components of the clothing pre-washing agent are as follows:

[0047] Phase A: water balance, 2% tetrasodium glutamate N,N-diacetate (GLDA), 5% dipropylene glycol monobutyl ether;

[0048] Phase B: 5% sodium alcohol polyether sulfate (AES), 10% fatty alcohol polyoxyethylene ether, 3% narrow distribution fatty alcohol polyoxyethylene ether, 2% sodium fatty alcohol alkyl sulfonate, 4% secondary alcohol AEO-9;

[0049] Phase C: 0.1% flavor, 0.2% preservative, 0.9% protease, and appropriate amount of pH adjuster.

[0050] The method for preparing the above-mentioned clothing pre-washing agent for efficiently removing heavy dirt and oil stains comprises the following steps:

[0051] Step S1: adding the phase A chelating agent and the organic solvent into a weighed water container under low-speed stirring to prepare a first mixed material;

[0052] Step S2: Under good stirring, add the surfactant of phase B to the first mixed material in sequence (depending on the dissolution, it can be homogenized at a low speed or appropriately heated to 60° C. to accelerate the dissolution) and stir and dissolve until it is uniform and transparent to prepare the second mixed material;

[0053] Step S3: stirring the second mixed material, other ingredients in phase C and the pH adjuster until they are evenly transparent to prepare a third mixed material;

[0054] Step S4: After the physical and chemical indicators are tested to be qualified, the material is filtered out with a 1000-mesh filter cloth, sealed and left to stand; after the micro-inspection is qualified, the material is disinfected and filled to obtain the finished product of the clothing pre-washing agent.

[0055] The pH value of the laundry pre-wash agent (1% solution) is controlled within the range of 7-8.

[0056] Example 2

[0057] This embodiment provides a clothing pre-washing agent that can efficiently remove heavy dirt and grease. The weight percentages of the components of the clothing pre-washing agent are as follows:

[0058] Phase A: balance water, 2% tetrasodium glutamate N,N-diacetate (GLDA), 3% isohexanediol;

[0059] Phase B: 5% sodium alcohol polyether sulfate (AES), 5% fatty alcohol polyoxyethylene ether, 10% narrow distribution fatty alcohol polyoxyethylene ether, 3% sodium fatty alcohol alkyl sulfonate, 2% secondary alcohol AEO-9

[0060] Phase C: 0.1% flavor, 0.2% preservative, 0.3% protease, appropriate amount of pH adjuster

[0061] The method for preparing the above-mentioned clothing pre-washing agent for efficiently removing heavy dirt and oil stains comprises the following steps:

[0062] Step S1: adding the phase A chelating agent and the organic solvent into a weighed water container under low-speed stirring to prepare a first mixed material;

[0063] Step S2: Under good stirring, add the surfactant of phase B to the first mixed material in sequence (depending on the dissolution, it can be homogenized at a low speed or appropriately heated to 60° C. to accelerate the dissolution) and stir and dissolve until it is uniform and transparent to prepare the second mixed material;

[0064] Step S3: stirring the second mixed material, other ingredients in phase C and the pH adjuster until they are evenly transparent to prepare a third mixed material;

[0065] Step S4: After the physical and chemical indicators are tested to be qualified, the material is filtered out with a 1000-mesh filter cloth, sealed and left to stand; after the micro-inspection is qualified, the material is disinfected and filled to obtain the finished product of the clothing pre-washing agent.

[0066] The pH value of the laundry pre-wash agent (1% solution) is controlled within the range of 7-8.

[0067] Example 3

[0068] This embodiment provides a clothing pre-washing agent for efficiently removing heavy dirt and oil stains and a preparation method thereof. The weight percentages of the components of the clothing pre-washing agent are as follows:

[0069] Phase A: water balance, 1% tetrasodium glutamate N,N-diacetate (GLDA), 3% dipropylene glycol monobutyl ether, 3% isohexylene glycol;

[0070] Phase B: 5% fatty alcohol polyoxyethylene ether, 5% narrow distribution fatty alcohol polyoxyethylene ether, 3% fatty alcohol sodium alkyl sulfonate;

[0071] Phase C: 0.1% flavor, 0.2% preservative, 0.5% protease, and appropriate amount of pH adjuster.

[0072] The method for preparing the above-mentioned clothing pre-washing agent for efficiently removing heavy dirt and oil stains comprises the following steps:

[0073] Step S1: adding the phase A chelating agent and the organic solvent into a weighed water container under low-speed stirring to prepare a first mixed material;

[0074] Step S2: Under good stirring, add the surfactant of phase B to the first mixed material in sequence (depending on the dissolution, it can be homogenized at a low speed or appropriately heated to 60° C. to accelerate the dissolution) and stir and dissolve until it is uniform and transparent to prepare the second mixed material;

[0075] Step S3: stirring the second mixed material, other ingredients in phase C and the pH adjuster until they are evenly transparent to prepare a third mixed material;

[0076] Step S4: After the physical and chemical indicators are tested to be qualified, the material is filtered out with a 1000-mesh filter cloth, sealed and left to stand; after the micro-inspection is qualified, the material is disinfected and filled to obtain the finished product of the clothing pre-washing agent.

[0077] The pH value of the laundry pre-wash agent (1% solution) is controlled within the range of 7-8.

[0078] Example 4

[0079] This embodiment provides a clothing pre-washing agent for efficiently removing heavy dirt and oil stains and a preparation method thereof. The weight percentages of the components of the clothing pre-washing agent are as follows:

[0080] Phase A: water balance, 1% tetrasodium glutamate N,N-diacetate (GLDA), 3% dipropylene glycol monobutyl ether, 3% isohexylene glycol;

[0081] Phase B: 5% sodium alcohol polyether sulfate (AES), 5% fatty alcohol polyoxyethylene ether, 4% narrow distribution fatty alcohol polyoxyethylene ether, 2% secondary alcohol AEO-9;

[0082] Phase C: 0.1% flavor, 0.2% preservative, 0.5% protease, and appropriate amount of pH adjuster.

[0083] The method for preparing the above-mentioned clothing pre-washing agent for efficiently removing heavy dirt and oil stains comprises the following steps:

[0084] Step S1: adding the phase A chelating agent and the organic solvent into a weighed water container under low-speed stirring to prepare a first mixed material;

[0085] Step S2: Under good stirring, add the surfactant of phase B to the first mixed material in sequence (depending on the dissolution, it can be homogenized at a low speed or appropriately heated to 60° C. to accelerate the dissolution) and stir and dissolve until it is uniform and transparent to prepare the second mixed material;

[0086] Step S3: stirring the second mixed material, other ingredients in phase C and the pH adjuster until they are evenly transparent to prepare a third mixed material;

[0087] Step S4: After the physical and chemical indicators are tested to be qualified, the material is filtered out with a 1000-mesh filter cloth, sealed and left to stand; after the micro-inspection is qualified, the material is disinfected and filled to obtain the finished product of the clothing pre-washing agent.

[0088] The pH value of the laundry pre-wash agent (1% solution) is controlled within the range of 7-8.

[0089] Comparative Example 1

[0090] This comparative example provides a clothing pre-washing agent and a preparation method thereof. The weight percentages of the components of the clothing pre-washing agent are as follows:

[0091] Phase A: balance water, 2% tetrasodium glutamate N,N-diacetate (GLDA), 3% isohexanediol;

[0092] Phase B: 5% sodium alcohol polyether sulfate (AES), 10% fatty alcohol polyoxyethylene ether;

[0093] Phase C: 0.1% flavor, 0.2% preservative, 0.5% protease, and appropriate amount of pH adjuster.

[0094] The above-mentioned method for preparing the clothing pre-washing agent comprises the following steps:

[0095] Step S1: adding the phase A chelating agent and the organic solvent into a weighed water container under low-speed stirring to prepare a first mixed material;

[0096] Step S2: Under good stirring, add the surfactant of phase B to the first mixed material in sequence (depending on the dissolution, it can be homogenized at a low speed or appropriately heated to 60° C. to accelerate the dissolution) and stir and dissolve until it is uniform and transparent to prepare the second mixed material;

[0097] Step S3: stirring the second mixed material, other ingredients in phase C and the pH adjuster until they are evenly transparent to prepare a third mixed material;

[0098] Step S4: After the physical and chemical indicators are tested to be qualified, the material is filtered out with a 1000-mesh filter cloth, sealed and left to stand; after the micro-inspection is qualified, the material is disinfected and filled to obtain the finished product of the clothing pre-washing agent.

[0099] Comparative Example 2

[0100] This comparative example provides a clothing pre-washing agent and a preparation method thereof. The weight percentages of the components of the clothing pre-washing agent are as follows:

[0101] Phase A: water balance, 1% tetrasodium glutamate N,N-diacetate (GLDA), 3% dipropylene glycol monobutyl ether, 3% isohexylene glycol;

[0102] Phase B: 3% sodium alcohol polyether sulfate (AES), 5% alcohol polyoxyethylene ether, 5% narrow distribution alcohol polyoxyethylene ether;

[0103] Phase C: 0.1% flavor, 0.2% preservative, 0.3% protease, and appropriate amount of pH adjuster.

[0104] The above-mentioned method for preparing the clothing pre-washing agent comprises the following steps:

[0105] Step S1: adding the phase A chelating agent and the organic solvent into a weighed water container under low-speed stirring to prepare a first mixed material;

[0106] Step S2: Under good stirring, add the surfactant of phase B to the first mixed material in sequence (depending on the dissolution, it can be homogenized at a low speed or appropriately heated to 60° C. to accelerate the dissolution) and stir and dissolve until it is uniform and transparent to prepare the second mixed material;

[0107] Step S3: stirring the second mixed material, other ingredients in phase C and the pH adjuster until they are evenly transparent to prepare a third mixed material;

[0108] Step S4: After the physical and chemical indicators are tested to be qualified, the material is filtered out with a 1000-mesh filter cloth, sealed and left to stand; after the micro-inspection is qualified, the material is disinfected and filled to obtain the finished product of the clothing pre-washing agent.

[0109] The above-mentioned clothing pre-washing agent and the preparation method thereof meet the requirements of the standard QBT 1224-2012 liquid detergent for clothing.

[0110] The following are the contents of the efficacy test examples of the above-mentioned embodiments and comparative examples respectively.

[0111] 1. Stability test

[0112] The stability test is a test of the long-term stability of clothing pre-washing agents based on specific actual usage and storage conditions. Considering the vast territory of my country, a large part of the country is in a long-term low temperature state in winter, and detergents will become turbid, precipitate, and even solidify under low temperature conditions. Therefore, in the process of product development, long-term low temperature stability is also a product inspection content; in the south, the weather is hot for a long time, and the warehouse conditions and transportation process will have a high temperature of up to 40-45℃. This temperature will cause the color of the fragrance, alcohol amine, etc. in the clothing pre-washing agent to change, thereby affecting the appearance of the clothing pre-washing agent. Therefore, in the process of product development, long-term high temperature stability is also a product inspection content.

[0113] According to the research experience in this field and the theoretical formula of temperature difference thermodynamics, the stability can be maintained for 1 month at 48°C and -10°C. This product can ensure good quality during the shelf life of the product (3 years).

[0114] Table 1 Stability test results

[0115]

[0116]

[0117] 2. Daily heavy dirt stain removal test

[0118] Test method: Treat white cloth with equal amounts of various stains in advance. After the stains are naturally dried for 24 hours, spray the stains with equal amounts (5 pump pressures for each) of the example and comparative example samples, rub them gently (rubbing after 5 minutes will have a better effect), and then carry out formal clothing washing.

[0119] The examples show that the compounded specific organic solvent, heavy dirt and oil stain remover and enzyme can effectively remove daily heavy dirt stains. The test results show that the effect is immediate after spraying, and the effect is better after rubbing for 5 minutes.

[0120] Table 2 Daily heavy dirt stain removal test result record

[0121]

[0122] As shown in Table 2, Examples 1-4 showed excellent cleaning ability for heavy oil stains (mixed chili oil, soy sauce, cream, etc.), fruit stains, ballpoint pen stains, blood stains, sweat stains, and red wine stains, and showed good cleaning effect for marker pen stains; Comparative Examples 1-2 performed poorly in all kinds of stains.

[0123] Figure 1 and Figure 2 The instant spray-on results of Example 4, Comparative Example 1 and the competing product are shown in the comparison chart before and after cleaning. The decontamination effect of Example 4 is significantly better than that of Comparative Example 1 and the competing product.

[0124] Figure 3 and Figure 4 They are respectively the spray-and-use examples 1, 2 and 3, and the comparison charts of the actual use test results before and after cleaning.

[0125] 3. Synergistic effect test example

[0126] Table 3 Components of Example 1 and Comparative Examples 3-10

[0127]

[0128] Comparative Examples 3-10 were prepared according to the steps in Example 1 to obtain clothing pre-wash agents. It can be seen from the test results that after reducing any component (except for flavors, preservatives and water, which play a modifying role), the composition of the present invention still has certain efficacy, but the effect is obviously far inferior to the composition of the present invention. This is due to the synergistic effect between the compositions of the present invention, which can chelate and disperse stains through the chelating agent, soften water quality, and ensure and improve the decontamination performance of the surfactant; the biological enzyme decomposes specific types of stains into small molecules that are easy to clean, and cooperates with surfactants of different decontamination types to evenly remove various types of stains; the organic solvent quickly dissolves lipophilic dirt and synergistically improves the effect of the surfactant in removing stains. Without any component, the removal effect of the clothing pre-wash agent on heavy dirt and oil stains is greatly reduced.

[0129] Detergency test

[0130] The laundry pre-washing agents prepared in Example 1 and Comparative Examples 3-10 were used respectively to measure the stain removal values ​​of JB01, JB02, and JB03 dirty cloths in accordance with GBT 13174-2021 Detergents for Clothes and Washing Cycle Performance.

[0131] The results of Example 1 and Comparative Examples 3-10 are shown in Table 4 below.

[0132] Table 4 Detergency test results of Example 1 and Comparative Examples 3-10

[0133]

[0134]

[0135] From the test results in Table 4, it can be seen that the test group has a certain effect on the three kinds of dirty cloths. The decontamination values ​​of JB01, JB02 and JB03 in Example 1 are 1.68, 1.89 and 1.88 respectively, while the decontamination values ​​of JB01, JB02 and JB03 in the comparative example are 1.20-1.57, 1.02-1.58 and 1.20-1.71 respectively. There is a statistically significant difference in the decontamination effects of the two.

[0136] It can be seen from the test results that after reducing any component (except for flavors, preservatives and water, which play a modifying role), the composition of the present invention still has certain efficacy, but the effect is obviously far inferior to the composition of the present invention. This is due to the synergistic effect between the compositions of the present invention, which can chelate and disperse stains through the chelating agent, soften water quality, and ensure and improve the decontamination performance of the surfactant; the biological enzyme decomposes specific types of stains into small molecules that are easy to clean, and cooperates with surfactants of different decontamination types to evenly remove various types of stains; the organic solvent quickly dissolves lipophilic dirt and synergistically improves the effect of the surfactant in removing stains. If any component is missing, the removal effect of the clothing pre-wash agent on heavy dirt and oil stains is greatly reduced.

[0137] It can also be found in the experiment that in order to ensure the effect of the present invention, the reasonable combination of the components of the present invention has an important influence on the performance of the efficacy. Only when the components are reasonably matched can a synergistic effect be produced to achieve the high-efficiency removal of heavy dirt and oil pollution of the present invention.

[0138] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Therefore, any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the present invention without departing from the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A clothing pre-washing agent for efficiently removing heavy dirt and oil stains, characterized in that: In terms of weight percentage, it includes the following components: The surfactant is selected from one or more of anionic surfactants and nonionic surfactants; The anionic surfactant is selected from one or more of sodium fatty alcohol polyether sulfate, dodecylbenzene sulfonic acid, sodium fatty alcohol alkyl sulfonate, sodium α-olefin sulfonate, and α-sulfo fatty acid methyl ester; The nonionic surfactant is selected from one or more of fatty alcohol polyoxyethylene ether, secondary alcohol AEO-9, narrow distribution fatty alcohol polyoxyethylene ether, alkyl glycoside, and fatty acid methyl ester ethoxylate; The chelating agent is selected from citrate, sodium gluconate, tetrasodium glutamate N,N-diacetate, and methylglycine diacetate.

2. The clothing pre-washing agent for efficiently removing heavy dirt and oil stains according to claim 1, characterized in that: The organic solvent is selected from one or more of propylene glycol, isohexylene glycol, isopropanol, propylene glycol n-butyl ether, and dipropylene glycol monobutyl ether; The pH adjuster is selected from one or more of citric acid and its salts, and triethanolamine.

3. The clothing pre-washing agent for efficiently removing heavy dirt and oil stains according to claim 1, characterized in that: The other ingredients include 0.05%-1% preservatives, 0.2%-0.9% enzyme preparations, and 0.1% flavors.

4. The clothing pre-washing agent for efficiently removing heavy dirt and oil stains as claimed in claim 3, characterized in that: The enzyme preparation is selected from one or more of the protease, cellulase and lipase of YTDOL.

5. The clothing pre-washing agent for efficiently removing heavy dirt and oil stains according to any one of claim 4, characterized in that: The formula contains the following weight percentage ingredients: Phase A: water balance, 1-2% tetrasodium glutamate N,N-diacetate, 5% dipropylene glycol monobutyl ether or 3% isohexylene glycol or 3% dipropylene glycol monobutyl ether, 3% isohexylene glycol; Phase B: 5% sodium fatty alcohol polyether sulfate, and / or 5-10% fatty alcohol polyoxyethylene ether, and 3-10% narrow distribution fatty alcohol polyoxyethylene ether, and / or 2-3% sodium fatty alcohol alkyl sulfonate, and / or 2-4% secondary alcohol AEO-9; Phase C: 0.1% flavor, 0.05-1% preservative, 0.3-1% protease, and appropriate amount of pH adjuster.

6. The clothing pre-washing agent for efficiently removing heavy dirt and oil stains as claimed in claim 5, characterized in that: The formula contains the following weight percentage ingredients: Phase A: water balance, 1-2% tetrasodium glutamate N,N-diacetate, 5% dipropylene glycol monobutyl ether, or 3% isohexylene glycol, or 3% dipropylene glycol monobutyl ether, 3% isohexylene glycol; Phase B: 5% sodium fatty alcohol polyether sulfate, 5-10% fatty alcohol polyoxyethylene ether, 3-10% narrow distribution fatty alcohol polyoxyethylene ether, 2-3% sodium fatty alcohol alkyl sulfonate, 2-4% secondary alcohol AEO-9; Phase C: 0.1% flavor, 0.05-1% preservative, 0.3-1% protease, and appropriate amount of pH adjuster.

7. The clothing pre-washing agent for efficiently removing heavy dirt and oil stains as claimed in claim 5, characterized in that: The formula contains the following weight percentage ingredients: Phase A: water balance, 1-2% tetrasodium glutamate N,N-diacetate, 5% dipropylene glycol monobutyl ether, or 3% isohexylene glycol, or 3% dipropylene glycol monobutyl ether, 3% isohexylene glycol; Phase B: 5-10% fatty alcohol polyoxyethylene ether, 3-10% narrow distribution fatty alcohol polyoxyethylene ether, 2-3% sodium fatty alcohol alkyl sulfonate; Phase C: 0.1% flavor, 0.05-1% preservative, 0.3-1% protease, and appropriate amount of pH adjuster.

8. The clothing pre-washing agent for efficiently removing heavy dirt and oil stains as claimed in claim 5, characterized in that: The formula contains the following weight percentage ingredients: Phase A: water balance, 1-2% tetrasodium glutamate N,N-diacetate, 5% dipropylene glycol monobutyl ether, or 3% isohexylene glycol, or 3% dipropylene glycol monobutyl ether, 3% isohexylene glycol; Phase B: 5% sodium alcohol polyether sulfate, 5-10% fatty alcohol polyoxyethylene ether, 3-10% narrow distribution fatty alcohol polyoxyethylene ether, 2-4% secondary alcohol AEO-9; Phase C: 0.1% flavor, 0.05-1% preservative, 0.3-1% protease, and appropriate amount of pH adjuster.

9. The method for preparing the clothing pre-washing agent for efficiently removing heavy dirt and oil stains according to any one of claims 1 to 8, characterized in that: The steps include: Step S1: adding the phase A chelating agent and the organic solvent into a weighed water container under low-speed stirring to prepare a first mixed material; Step S2: under good stirring, sequentially add the surfactant of phase B to the first mixed material and stir and dissolve until it becomes uniform and transparent to prepare the second mixed material; Step S3: stirring the second mixed material, other ingredients in phase C and the pH adjuster until they are evenly transparent to prepare a third mixed material; Step S4: After the physical and chemical indicators are tested to be qualified, the material is filtered out with a 1000-mesh filter cloth, sealed and left to stand; after the micro-inspection is qualified, the material is disinfected and filled to obtain the finished product of the clothing pre-washing agent.

10. The method for preparing the clothing pre-washing agent for efficiently removing heavy dirt and oil stains according to claim 9, characterized in that: The pH value of the laundry pre-wash agent (1% solution) is controlled within the range of 7-8.

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