A solvent-free laundry detergent and a method for preparing the same

Abstract

This invention discloses a solvent-free laundry detergent, comprising the following components in parts by weight: 15-30 parts isomeric alcohol ether, 10-30 parts fatty alcohol polyoxyethylene ether, 15-40 parts alkylbenzene sulfonic acid, 10-25 parts organic base neutralizer, 5-10 parts nonionic polymer, 0.1-0.3 parts chelating agent, 0.1-8 parts defoamer, and 0.5-18 parts additives. This laundry detergent is a clear, transparent, homogeneous liquid with good fluidity and stability, and its quality fully meets industry standards. Compared with existing technologies, the solvent-free laundry detergent of this invention can significantly reduce the consumption of packaging materials and solvents, saving substantial packaging and transportation costs, and aligning with current trends of energy conservation, environmental protection, and sustainable development. This solvent-free laundry detergent can be used directly like traditional laundry detergent, or it can be simply diluted and repackaged to produce traditional laundry detergent or laundry pods for sale.

Description

Technical Field

[0001] This invention belongs to the field of daily chemical products technology, specifically relating to a solvent-free laundry detergent and its preparation method. Background Technology

[0002] Laundry detergent is a liquid fabric cleaner and a common daily chemical product. Its formula mainly consists of surfactants, builders, enzymes, and solvents. Surfactants (also called active ingredients), builders, and enzymes are the main cleaning components, while the solvent is the medium that dissolves and mixes them together. Typically, the solvent in laundry detergent is water, and sometimes a certain amount of alcohol or alcohol ether organic solvents are added. The solvents added to laundry detergent have virtually no impact on its cleaning effect.

[0003] During the production of laundry detergent, raw materials need to be dissolved, dispersed, mixed, and transported. When used, it must be easy to pour, disperse, and dissolve; therefore, laundry detergent must maintain good liquid flowability. Traditional laundry detergents require the addition of a certain amount of solvent to achieve good liquid flowability. However, the added solvent does not significantly improve cleaning performance. On the contrary, the large amount of solvent significantly increases the weight and volume of the laundry detergent product, causing substantial waste of resources and energy in product packaging and transportation. This is completely contrary to the requirements of energy conservation, environmental protection, and sustainable development. Therefore, my country strongly advocates the promotion and use of concentrated laundry detergent to minimize the use of solvents.

[0004] Concentrated laundry detergent (including laundry pods) refers to laundry detergent with a total surfactant content of ≥25%. Currently, the total surfactant content of concentrated laundry detergent on the market is generally around 40-50%. Although the solvent content of concentrated laundry detergent is much lower than that of ordinary laundry detergent (total surfactant content of around 15-20%), the solvent content of concentrated laundry detergent is still generally as high as 30-40%. Moreover, due to the needs of the production process, concentrated laundry detergent uses more organic solvents, resulting in a higher VOC content, which may pose a greater risk of environmental harm. Summary of the Invention

[0005] The purpose of this invention is to address the problem of the unavoidable addition of large amounts of solvent in traditional laundry detergents by providing a solvent-free laundry detergent. Apart from the small amount of solvent naturally present in the raw materials, no additional solvent needs to be added during the preparation process. This saves on packaging materials and solvent consumption, is environmentally friendly, and also has good fluidity and stability.

[0006] Another object of the present invention is to provide a method for preparing the above-mentioned solvent-free laundry detergent.

[0007] Technical solution

[0008] A solvent-free laundry detergent comprises the following components in parts by weight: 15-30 parts of isomeric alcohol ether, 10-30 parts of fatty alcohol polyoxyethylene ether, 15-40 parts of alkylbenzene sulfonic acid, 10-25 parts of organic base neutralizer, 5-10 parts of nonionic polymer, 0.1-0.3 parts of chelating agent, 0.1-8 parts of defoamer, and 0.5-18 parts of additives.

[0009] The chelating agent is selected from tetrasodium ethylenediaminetetraacetate, tetrasodium glutamate diacetate, or trisodium methylglycine diacetate; the defoamer is polydimethylsiloxane emulsion, fatty acid, or ethoxypropoxy polyether.

[0010] Furthermore, the isomeric alcohol ether is a 6-10 ethoxy ether or ethoxypropoxy ether of a C8, C10, or C13 isomeric alcohol, preferably a 7-10 ether of a C8 isomeric alcohol.

[0011] Furthermore, the fatty alcohol polyoxyethylene ether is a 6-10 ethoxy ether or ethoxypropoxy ether of a C12-18 fatty alcohol, preferably a C12-C18 fatty alcohol 7-9 ether.

[0012] Furthermore, the alkylbenzene sulfonic acid is a C12-C18 straight-chain alkylbenzene sulfonic acid.

[0013] Furthermore, the organic base neutralizing agent is a liquid organic amine, including but not limited to monoethanolamine, diethanolamine, triethanolamine, monoisopropanolamine, methyldiethanolamine, 2-amino-2-methylpropanol, etc., preferably monoethanolamine or triethanolamine.

[0014] Furthermore, the nonionic polymer is ACUSOL CB1 Cleaning Booster from Dow Chemical Company, a nonionic surfactant that acts as an anti-redeposition agent in the formulation.

[0015] The additive is selected from one or more of the following: anionic surfactants, nonionic surfactants, amphoteric surfactants, enzyme preparations, solubilizers, fragrances, or pigments, in any proportion.

[0016] The anionic surfactant is selected from one or more of fatty acid salts, fatty alcohol polyoxyethylene ether sulfates, secondary alkyl sulfates, fatty acid methyl ester sulfonates, fatty acid methyl ester ethoxylate sulfonates, fatty alcohol sulfates, α-alkenyl sulfonates, succinate sulfonates, fatty alcohol polyoxyethylene ether phosphates, and alkyl diphenyl ether disulfonates, in any proportion.

[0017] The nonionic surfactant is selected from one or more of alkylamine oxides, alkylamidopropylamine oxides, fatty acid diethanolamides, fatty acid polyoxyethylene esters, fatty acid methyl ester ethoxylates, alkylamine polyoxyethylene ethers, and alkyl glucosides, in any proportion.

[0018] The amphoteric surfactant is selected from one or more of alkyl betaine, alkylamidopropyl betaine, hydroxysulfonyl betaine alkylamino acetate, alkylaminopropionate, alkylcarboxymethyl hydroxyethyl imidazoline, alkylhydroxyethyl hydroxypropyl sulfonyl imidazoline, and alkylamide amino acid salts in any proportion.

[0019] The enzyme preparation is selected from one or more of the following: protease, lipase, cellulase, amylase, and mannanase, in any proportion.

[0020] The solubilizer is selected from one or more of sodium xylenesulfonate, sodium isopropylbenzenesulfonate, C8-10 alkyl glycoside, C8-10 sulfonate, and succinate in any proportion.

[0021] The preparation method of the above solvent-free laundry detergent includes the following steps:

[0022] S1. Add the isomeric alcohol ether to the mixing tank, start stirring, add the organic base neutralizer, and stir until evenly mixed; if the defoamer is a fatty acid, continue in the order of S2, S3, and S4; if the defoamer is not a fatty acid, skip step S2 and proceed in the order of S3 and S4.

[0023] S2. Add fatty acids to the mixing vessel and stir to react for 10 minutes;

[0024] S3. Add alkylbenzene sulfonic acid to the mixing tank, stir and mix evenly to carry out the neutralization reaction;

[0025] S4. Add the remaining components to the mixing vessel, stir and mix evenly, and adjust the pH to 7-9 to obtain the final product.

[0026] The beneficial effects of this invention are as follows: This invention provides a solvent-free laundry detergent, which is a clear, transparent, homogeneous liquid with good fluidity and stability, and its quality fully meets the requirements of industry standard QB / T 1224 "Liquid Detergents for Clothing". Compared with existing technologies, the solvent-free laundry detergent of this invention can significantly reduce the consumption of packaging materials and solvents (including water), saving a large amount of packaging and transportation energy and costs, which is in line with the current trend of energy conservation, environmental protection, and sustainable development. The solvent-free laundry detergent can be used directly like traditional laundry detergent, or it can be simply diluted and repackaged into traditional laundry detergent or laundry pods for sale, bringing more choices and convenience to product production, sales, and marketing. Furthermore, because the solvent-free laundry detergent has a very low water content, it generally does not require the addition of preservatives, or the amount of preservatives can be reduced, resulting in lower toxicity and irritation risks, making the product milder and safer. Detailed Implementation

[0027] The technical solution of the present invention will be further described below with reference to specific embodiments.

[0028] It should be noted that: in the following examples and comparative examples, the parts are all by weight; if the content of various components in the examples and comparative examples is not specified, its content is considered to be 100%.

[0029] Example 1

[0030] A solvent-free laundry detergent comprises the following components:

[0031] 30 parts of C10 isomeric alcohol (8) ether, 16.1 parts of triethanolamine, 7.2 parts of defoamer (oleic acid), 25 parts of linear dodecylbenzenesulfonic acid (content 96%), 0.2 parts of chelating agent, 6 parts of nonionic polymer (ACUSOL CB1 Cleaning Booster), 15 parts of C12 fatty alcohol polyoxyethylene (9) ether, and 0.5 parts of protease.

[0032] The chelating agent is trisodium methylglycine diacetate (content 40%).

[0033] The preparation method of the solvent-free laundry detergent is as follows:

[0034] S1. Add C10 isomeric alcohol (8) ether to the mixing tank, start stirring, add triethanolamine, and stir until evenly mixed;

[0035] S2. Add oleic acid to the mixing vessel and stir for 10 minutes;

[0036] S3. Slowly add alkylbenzene sulfonic acid to the mixing vessel and stir to carry out the neutralization reaction. After adding the alkylbenzene sulfonic acid, continue stirring for 10 minutes.

[0037] S4. Add the remaining components to the mixing vessel, stir to dissolve, mix evenly, adjust the pH to 8-9 after adding all the components, and continue stirring for 10 minutes to obtain the final product.

[0038] Example 2

[0039] A solvent-free laundry detergent comprises the following components:

[0040] 15 parts of C8 isomeric alcohol (9) ether, 19.7 parts of triethanolamine, 40 parts of linear dodecylbenzenesulfonic acid (content 96%), 0.2 parts of chelating agent, 10 parts of nonionic polymer (ACUSOL CB1 Cleaning Booster), 5 parts of nonionic surfactant, 10 parts of C12 fatty alcohol polyoxyethylene (9) ether, and 0.1 parts of defoamer.

[0041] The chelating agent is tetrasodium ethylenediaminetetraacetate (content 39%), the nonionic surfactant is C12 fatty acid methyl ester ethoxylate (content 70%), and the defoamer is polydimethylsiloxane emulsion (content 30%).

[0042] The preparation method of the solvent-free laundry detergent is as follows:

[0043] S1. Add C8 isomeric alcohol (9) ether to the mixing tank, start stirring, add triethanolamine, and stir until evenly mixed;

[0044] S2. Slowly add alkylbenzene sulfonic acid to the mixing vessel and stir to carry out the neutralization reaction. After adding the alkylbenzene sulfonic acid, continue stirring for 10 minutes.

[0045] S3. Add the remaining components to the mixing vessel, stir to dissolve, mix evenly, adjust the pH to 8-9 after adding all the components, and continue stirring for 10 minutes to obtain the final product.

[0046] Example 3

[0047] A solvent-free laundry detergent pod, comprising the following components:

[0048] 27 parts of C13 isomer alcohol (9) ether, 5.2 parts of monoethanolamine, 22 parts of linear dodecylbenzenesulfonic acid (content 96%), 0.2 parts of chelating agent, 6 parts of nonionic polymer (ACUSOL CB1 Cleaning Booster), 7 parts of anionic surfactant, 32 parts of C12 secondary alcohol polyoxyethylene (9) ether, 0.1 parts of defoamer, and 0.5 parts of protease.

[0049] The chelating agent is a tetrasodium glutamate diacetate solution (47%), the anionic surfactant is sodium C12 secondary alkyl sulfonate (60%), and the defoamer is polydimethylsiloxane emulsion (30%).

[0050] The preparation method of the solvent-free laundry detergent is as follows:

[0051] S1. Add C13 isomeric alcohol (9) ether to the mixing tank, start stirring, add monoethanolamine, and stir to mix evenly;

[0052] S2. Slowly add alkylbenzene sulfonic acid to the mixing vessel and stir to carry out the neutralization reaction. After adding the alkylbenzene sulfonic acid, continue stirring for 10 minutes.

[0053] S3. Add the remaining components to the mixing vessel, stir to dissolve, mix evenly, adjust the pH to 8-9 after adding all the components, and continue stirring for 10 minutes to obtain the final product.

[0054] Example 4

[0055] A solvent-free laundry detergent comprises the following components:

[0056] 22 parts of C8 isomeric alcohol (6) ether, 10.8 parts of monoisopropanolamine, 6 parts of defoamer (coconut oil fatty acid), 33 parts of linear dodecylbenzene sulfonic acid (content 96%), 0.2 parts of chelating agent, 6 parts of nonionic polymer (ACUSOL CB1 Cleaning Booster), 15 parts of C12 fatty alcohol polyoxyethylene (7) ether, and 7 parts of amphoteric surfactant.

[0057] The chelating agent is tetrasodium glutamate diacetate (47%), and the amphoteric surfactant is cocamidopropyl hydroxysulfonate betaine (30%).

[0058] The preparation method of the solvent-free laundry detergent is as follows:

[0059] S1. Add C8 isopropyl alcohol (6) ether to the mixing tank, start stirring, add monoisopropanolamine, and stir to mix evenly;

[0060] S2. Add coconut oil fatty acids to the mixing vessel and stir for 10 minutes.

[0061] S3. Slowly add alkylbenzene sulfonic acid to the mixing vessel and stir to carry out the neutralization reaction. After adding the alkylbenzene sulfonic acid, continue stirring for 10 minutes.

[0062] S4. Add the remaining components to the mixing vessel in sequence, stir to dissolve, mix evenly, adjust the pH to 8-9 after adding all the components, and continue stirring for 10 minutes to obtain the final product.

[0063] Example 5

[0064] A solvent-free laundry detergent comprises the following components:

[0065] 16.5 parts of C10 isomeric alcohol (9) ether, 18.3 parts of triethanolamine, 6 parts of defoamer (oleic acid), 30 parts of linear dodecylbenzenesulfonic acid (content 96%), 0.2 parts of chelating agent, 8.5 parts of nonionic polymer (ACUSOL CB1 Cleaning Booster), 20 parts of C12 fatty alcohol polyoxyethylene (7) ether, and 0.5 parts of protease.

[0066] The chelating agent is tetrasodium glutamate diacetate (content 47%).

[0067] The preparation method of the solvent-free laundry detergent is as follows:

[0068] S1. Add C10 isomeric alcohol (9) ether to the mixing tank, start stirring, add triethanolamine, and stir to mix evenly;

[0069] S2. Add oleic acid to the mixing vessel and stir for 10 minutes;

[0070] S3. Slowly add alkylbenzene sulfonic acid to the mixing vessel and stir to carry out the neutralization reaction. After adding the alkylbenzene sulfonic acid, continue stirring for 10 minutes.

[0071] S4. Add the remaining components to the mixing vessel, stir to dissolve, mix evenly, adjust the pH to 8-9 after adding all the components, and continue stirring for 10 minutes to obtain the final product.

[0072] Example 6

[0073] A solvent-free laundry detergent comprises the following components:

[0074] 18.5 parts of C8 isomeric alcohol (9) ether, 12.7 parts of triethanolamine, 25 parts of linear dodecylbenzenesulfonic acid (content 96%), 0.2 parts of chelating agent, 6.5 parts of solubilizer, 5 parts of nonionic polymer (ACUSOL CB1 Cleaning Booster), 9 parts of anionic surfactant, 22.5 parts of C12 fatty alcohol polyoxyethylene (9) ether, 0.1 parts of defoamer, and 0.5 parts of protease.

[0075] The chelating agent is a tetrasodium glutamate diacetate solution (47%), the solubilizer is sodium isopropylbenzenesulfonate (40%), the anionic surfactant is sodium lauryl polyoxyethylene ether sulfate (70%), and the defoamer is polydimethylsiloxane emulsion (30%).

[0076] The preparation method of the solvent-free laundry detergent is as follows:

[0077] S1. Add C8 isomeric alcohol (9) ether to the mixing tank, start stirring, add triethanolamine, and stir until evenly mixed;

[0078] S2. Slowly add alkylbenzene sulfonic acid to the mixing vessel and stir to carry out the neutralization reaction. After adding the alkylbenzene sulfonic acid, continue stirring for 10 minutes.

[0079] S3. Add the remaining components to the mixing vessel, stir to dissolve, mix evenly, adjust the pH to 8-9 after adding all the components, and continue stirring for 10 minutes to obtain the final product.

[0080] Comparative Example 1

[0081] A concentrated laundry detergent comprises the following components:

[0082] 32.5 parts water, 0.1 parts tetrasodium ethylenediaminetetraacetate, 3.2 parts sodium hydroxide, 24 parts linear dodecylbenzenesulfonic acid (96%), 6 parts sodium xylenesulfonate (40%), 6 parts propylene glycol, 3 parts glycerol, 5 parts nonionic polymer (ACUSOL CB1 Cleaning Booster), 5 parts C8 isomeric alcohol (9) ether, 8.5 parts sodium lauryl polyoxyethylene ether sulfate (70%), 6 parts C12 fatty alcohol polyoxyethylene (9) ether, 0.1 parts Kathon, 0.1 parts polydimethylsiloxane emulsion (30%), and 0.5 parts protease.

[0083] The concentrated laundry detergent is prepared as follows:

[0084] S1. Add water to the mixing vessel, start stirring, add tetrasodium ethylenediaminetetraacetate and sodium hydroxide in sequence, stir to dissolve, and mix evenly;

[0085] S2. Slowly add alkylbenzene sulfonic acid to the mixing vessel and stir to carry out the neutralization reaction. After the alkylbenzene sulfonic acid is added, continue stirring and reacting for 10 minutes.

[0086] S3. Add the remaining components to the mixing vessel, stir to dissolve, mix evenly, adjust the pH to 7-8 after adding all the components, and continue stirring for 10 minutes to obtain the final product.

[0087] Comparative Example 2

[0088] A laundry detergent pod contains the following components:

[0089] 18 parts propylene glycol, 0.2 parts tetrasodium glutamate diacetate solution (47%), 15.6 parts triethanolamine, 5 parts oleic acid, 27 parts linear dodecylbenzenesulfonic acid (96%), 4 parts glycerol, 5 parts nonionic polymer (ACUSOL CB1 CleaningBooster), 6 parts C10 isomer alcohol (9) ether, 10 parts C12 fatty alcohol polyoxyethylene (7) ether, 0.5 parts protease, and 8.7 parts water.

[0090] The preparation method of the contents of the laundry detergent pods is as follows:

[0091] S1. Add propylene glycol to the mixing tank, start stirring, and add tetrasodium glutamate diacetate and triethanolamine in sequence, stirring until evenly mixed;

[0092] S2. Add oleic acid to the mixing vessel and stir for 10 minutes;

[0093] S3. Slowly add alkylbenzene sulfonic acid to the mixing vessel and stir to carry out the neutralization reaction. After adding the alkylbenzene sulfonic acid, continue stirring for 10 minutes.

[0094] S4. Add the remaining components to the mixing vessel, stir to dissolve, mix evenly, adjust the pH to 7-8 after adding all the components, and continue stirring for 10 minutes to obtain the final product.

[0095] The laundry detergents of Examples 1-6 and Comparative Examples 1-2 were compared in terms of physicochemical properties, stability, and detergency. Stability testing was conducted according to industry standard QB / T 1224 "Liquid Detergents for Clothing"; detergency testing was performed according to the method specified in national standard GB / T 13174 "Determination of Detergency and Recycled Washing Performance of Detergents for Clothing". The sample concentrations are as follows:

[0096] a) Examples 1-6: 0.025%;

[0097] b) Comparative Examples 1-2: According to the industry standard QB / T 5651 "Laundry Detergent Pods", the concentration is 0.05%.

[0098] Note: Because the surfactant content in the laundry detergents of Examples 1-6 is about twice that of Comparative Examples 1-2, the test concentration of the examples is set to half that of the comparative examples during the detergency test to ensure that the total surfactant content in the test solutions of the examples and the comparative examples is basically the same.

[0099] The test results are shown in Table 1:

[0100] Table 1. Physicochemical properties and detergency test results of the examples and comparative examples.

[0101]

[0102] As can be seen from the test results in Table 1, the stability of the laundry detergents in both the examples and the comparative examples meets the requirements of the laundry detergent industry standard. Regarding the viscosity of the samples, the comparative example has a lower viscosity, approximately 200-600 cPs, while the examples have a relatively higher viscosity, approximately 1000-2000 cPs. Both are within the normal range for liquid detergent viscosity and do not affect production or use.

[0103] The detergency test results show that, with essentially the same total surfactant content, the detergency of the examples and comparative examples is roughly equivalent, and even slightly better than the comparative example. Specifically, the laundry detergents of Examples 1-6 achieve 8 times the detergency, and the laundry detergents of Comparative Examples 1-2 achieve 4 times the detergency (X times the detergency means that when the test concentration of the sample is 1 / X of the test concentration of the standard laundry detergent, the detergency ratio of the sample is ≥1.0). This indicates that solvent-free laundry detergents have comparable, or even better, detergency than traditional laundry detergents and laundry pods.

[0104] Looking at the water and organic solvents required in the formulation, the laundry detergent in the example contains 0% water and 0% organic solvent. In contrast, the concentrated laundry detergent in the comparative example contains 32% water and 9% organic solvent. Based on the same surfactant content, the concentrated laundry detergent has a packaging volume and transport weight at least 60% larger than the example (based on a product density of 1.1 g / ml). Furthermore, the comparative example's laundry detergent formula also uses the preservative Kathon, while the laundry detergent in the example does not require preservatives. In this respect, the laundry detergent in the example has a greater advantage in terms of mildness, safety, and non-irritation. In Comparative Example 2, the laundry pods contain only about 9% water, but 22% organic solvent. This means that for every ton of product, the laundry pods release 220 kg of volatile organic compounds (VOCs). The example does not add organic solvents, resulting in significantly lower VOCs. Moreover, the laundry pods consume a large amount of petrochemical-derived PVA water-soluble film. Therefore, the environmental risks posed by laundry pods are far greater than those of the laundry detergent in the example.

[0105] In summary, the laundry detergents in Examples 1-6, while ensuring product performance, can greatly reduce the consumption of resources, energy, and product costs, significantly reduce the product's harm to the environment, and are gentler, safer, and non-irritating, thus better meeting the requirements of safety, environmental protection, and sustainable development.

[0106] The above description is a specific description of feasible embodiments of the present invention. The above embodiments are not intended to limit the patent scope of the present invention. All equivalent implementations or modifications that do not depart from the basic idea of ​​the present invention should be included in the scope of this patent.

Claims

1. A solvent-free laundry detergent, characterized in that, It is composed of the following components in parts by weight: 15-30 parts of isomeric alcohol ether, 10-30 parts of fatty alcohol polyoxyethylene ether, 15-40 parts of alkylbenzene sulfonic acid, 10-25 parts of organic base neutralizer, 5-10 parts of nonionic polymer, 0.1-0.3 parts of chelating agent, 0.1-8 parts of defoamer, and 0.5-18 parts of additives; The chelating agent is selected from tetrasodium ethylenediaminetetraacetate, tetrasodium glutamate diacetate, or trisodium methylglycine diacetate; the defoamer is a polydimethylsiloxane emulsion, fatty acid, or ethoxypropoxy polyether; the isomeric alcohol ether is a 6-10 ethoxy ether or ethoxypropoxy ether of C8, C10, or C13 isomeric alcohols; and the nonionic polymer is ACUSOL CB1 Cleaning Booster from Dow Chemical Company. The additive is selected from one or more of anionic surfactants, nonionic surfactants, amphoteric surfactants, enzyme preparations, solubilizers, fragrances or pigments in any proportion; the solubilizer is selected from one or more of sodium xylenesulfonate, sodium isopropylbenzenesulfonate, C8-10 alkyl glycosides, C8-10 sulfonates or succinates in any proportion.

2. The solvent-free laundry detergent as described in claim 1, characterized in that, The fatty alcohol polyoxyethylene ether is a 6-10 ethoxy ether of a C12-18 fatty alcohol.

3. The solvent-free laundry detergent as described in claim 1, characterized in that, The alkylbenzene sulfonic acid is a C12-C18 straight-chain alkylbenzene sulfonic acid.

4. The solvent-free laundry detergent as described in claim 1, characterized in that, The organic base neutralizing agent is any one of monoethanolamine, diethanolamine, triethanolamine, monoisopropanolamine, methyldiethanolamine, or 2-amino-2-methylpropanol.

5. The solvent-free laundry detergent as described in claim 1, characterized in that, The anionic surfactant is selected from one or more of fatty acid salts, fatty alcohol polyoxyethylene ether sulfates, secondary alkyl sulfates, fatty acid methyl ester sulfonates, fatty acid methyl ester ethoxylate sulfonates, fatty alcohol sulfates, α-alkenyl sulfonates, succinate sulfonates, fatty alcohol polyoxyethylene ether phosphates, or alkyl diphenyl ether disulfonates, in any proportion.

6. The solvent-free laundry detergent as described in claim 1, characterized in that, The nonionic surfactant is selected from one or more of alkylamine oxides, alkylamidopropylamine oxides, fatty acid diethanolamides, fatty acid polyoxyethylene esters, fatty acid methyl ester ethoxylates, alkylamine polyoxyethylene ethers, or alkyl glucosides in any proportion.

7. The solvent-free laundry detergent as described in claim 1, characterized in that, The amphoteric surfactant is selected from one or more of alkyl betaine, alkylamidopropyl betaine, hydroxysulfonyl betaine alkylamino acetate, alkylaminopropionate, alkylcarboxymethyl hydroxyethyl imidazoline, alkylhydroxyethyl hydroxypropyl sulfonyl imidazoline or alkylamide amino acid salts in any proportion.

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