CN116875396A - Laundry detergent with strong detergency on sebum stains - Google Patents

Abstract

The application relates to a laundry detergent with strong detergency on sebum stains, and relates to the technical field of detergents; comprises the following raw materials in percentage by weight: 5-30% of anionic surfactant, 0.5-21% of high molecular surfactant, 0-25% of nonionic surfactant, 1-5% of preservative auxiliary agent, 0.1-3% of non-phosphorus chelating agent, 0.5-1% of thickener, 0-10% of solubilizer and 100% of deionized water; the high molecular surfactant comprises polyoxyethylene-polyoxypropylene block copolymer. According to the application, the polyoxyethylene-polyoxypropylene segmented copolymer and other conventional additives are compounded to prepare the liquid detergent, so that the detergency of the liquid detergent to sebum stains is effectively improved, and compared with the conventional nonionic surfactant, the liquid detergent has better detergency, and even if the consumption of the polyoxyethylene-polyoxypropylene segmented copolymer is reduced, the detergency better than that of the conventional nonionic surfactant can be obtained, so that the detergency of the liquid detergent is broken through by 1.20.

Description

Laundry detergent with strong detergency on sebum stains

Technical Field

The application relates to the technical field of detergents, in particular to a laundry detergent with strong detergency on sebum stains.

Background

Washing is a very common phenomenon in daily life and industrial production, and surfactants play a critical role in the washing process. Besides the requirement of better surface activity, the cost of the surfactant is an important factor in practical application, and how to reduce the dosage and the production cost is one of the working key points of surfactant researchers. Currently, specialty surfactants and functional surfactants are used in step-wise in detergents such as silicone surfactants, organic fluorine surfactants, gemini surfactants, chelating surfactants, and the like. These surfactants are used in small amounts, but tend to have unusual effects.

For the laundry industry, liquidization is the development direction of fabric detergents, and unlike traditional washing powder, the alkalinity of the washing liquid is low, and the decontamination is mainly carried out by using surfactants. The fatty alcohol polyoxyethylene ether is a main active substance in the liquid laundry detergent and is also a nonionic surfactant with the largest current dosage.

The fatty alcohol-polyoxyethylene ether has strong hard water resistance and high stability, and can achieve better decontamination effect under the condition of lower concentration, but the fatty alcohol-polyoxyethylene ether has limited effect of improving the decontamination capability of sebum stains, and the decontamination capability of national standard dirty cloth (sebum dirty cloth JB-03) is difficult to break through 1.20, which is also a pain spot facing the current laundry detergent, and the decontamination capability of sebum stains is difficult to improve.

Disclosure of Invention

In order to solve the problem of difficult improvement of the detergency of the sebum stains, the application provides the laundry detergent with the strong detergency of the sebum stains, so that the detergency of the laundry detergent to the sebum stains is improved, and the detergency of the sebum stains is broken through by 1.20.

In a first aspect, the application provides a laundry detergent with strong detergency on sebum stains, the laundry detergent comprising the following raw materials in percentage by weight: 5 to 30 percent of anionic surfactant, 0.5 to 21 percent of macromolecular surfactant, 0 to 25 percent of nonionic surfactant, 1 to 5 percent of preservative auxiliary agent, 0.1 to 3 percent of non-phosphorus chelating agent, 0.5 to 1 percent of thickener, 0 to 10 percent of solubilizer and 100 percent of deionized water; the high molecular surfactant comprises polyoxyethylene-polyoxypropylene block copolymer.

Further, the structural formula of the polyoxyethylene-polyoxypropylene block copolymer is as follows:

wherein: the value of x+y+z ranges from 120 to 180.

Further, the polymerization degree ratio of ethylene oxide to propylene oxide in the polyoxyethylene-polyoxypropylene block copolymer is in the range of 2.2-4.0, and the molecular weight of the polyoxyethylene-polyoxypropylene block copolymer is 4500-7500.

Further, the polyoxyethylene-polyoxypropylene block copolymer has a hydrophilic-lipophilic balance value in the range of 14.0 to 15.5.

Further, the nonionic surfactant comprises at least one of fatty alcohol polyoxyethylene ether, fatty acid methyl ester ethoxylate and modified grease ethoxylate;

when the polyoxyethylene-polyoxypropylene block copolymer and the nonionic surfactant are added at the same time, the proportion of the polyoxyethylene-polyoxypropylene block copolymer to the total mass of the nonionic surfactant is more than or equal to 30 percent.

Further, the mass ratio of the anionic surfactant to the nonionic surfactant is (1-5): 1.

further, the carbon chain distribution in the fatty alcohol-polyoxyethylene ether is C10-C16, wherein the ratio of C12-C14 is more than 85%, and the ethoxy number is 4-10.

Further, the anionic surfactant is at least one selected from the group consisting of sodium linear dodecylbenzene sulfonate, sodium fatty alcohol polyoxyethylene ether sulfate, sodium fatty acid methyl ester sulfonate and alpha-alkenyl sulfonate.

Further, the preservative aid is at least one selected from lactic acid, sodium benzoate and cocamidopropyl PG-dimethyl ammonium chloride phosphate.

In a second aspect, the present application provides a method for preparing a laundry detergent having a strong detergency on sebum stains, comprising:

sequentially mixing a non-phosphorus chelating agent, an anionic surfactant, a high molecular surfactant, a nonionic surfactant and a solubilizer to prepare a premix;

and sequentially adding the anti-corrosion auxiliary agent, the thickening agent and the deionized water into the premix, and stirring and mixing to obtain the liquid laundry detergent.

By adopting the technology, the premix is prepared firstly to ensure that the surfactant is completely dissolved, so that the uniformity is improved.

In summary, the present application includes at least one of the following beneficial technical effects:

1. according to the application, the polyoxyethylene-polyoxypropylene segmented copolymer and other conventional additives are compounded to prepare the liquid detergent, so that the detergency of the liquid detergent on sebum stains is effectively improved, and compared with a traditional nonionic surfactant, the liquid detergent has better detergency, and even if the consumption of the polyoxyethylene-polyoxypropylene segmented copolymer is reduced, the detergency better than that of the conventional nonionic surfactant can be obtained, so that the detergency of sebum stains is broken through by 1.20.

Drawings

FIG. 1 is a graph showing the relationship between concentration and viscosity of an aqueous solution of a polyoxyethylene-polyoxypropylene block copolymer in an example of the present application;

FIG. 2 is a graph showing the relationship between the concentration and viscosity of an aqueous solution of fatty alcohol-polyoxyethylene ether in the example of the present application;

FIG. 3 is a graph showing the concentration-viscosity measurement of aqueous solutions of fatty alcohol-polyoxyethylene ethers in accordance with an embodiment of the present application.

Detailed Description

The present application will be described in further detail with reference to examples. The specific description is: the following examples were conducted under conventional conditions or conditions recommended by the manufacturer, where specific conditions were not noted; the raw materials used in the following examples were all commercially available from ordinary sources except for the specific descriptions.

The application provides a laundry detergent with strong detergency on sebum stains, which comprises the following raw materials in percentage by weight:

5 to 30 percent of anionic surfactant, 0.5 to 21 percent of macromolecular surfactant, 0 to 25 percent of nonionic surfactant, 1 to 5 percent of preservative aid, 0.1 to 3 percent of non-phosphorus chelating agent, 0.5 to 1 percent of thickener, 0 to 10 percent of solubilizer and 100 percent of deionized water.

Wherein the anionic surfactant may be at least one of sodium linear dodecylbenzenesulfonate, sodium fatty alcohol polyoxyethylene ether sulfate, sodium fatty acid methyl sulfonate, alpha-alkenyl sulfonate, higher fatty acid salt, fatty alcohol polyoxyethylene ether sulfate, fatty alcohol sulfate, succinate sulfonate, secondary alkyl sulfonate, alkyl ether carboxylate, N-fatty acyl amino acid salt (carbon chain distribution is preferably C12-C18), sodium lauroyl glutamate, sodium lauroyl alaninate, lauroyl alanine, disodium oleoyl glutamate, sodium cocoyl glycinate, potassium cocoyl glycinate, sodium cocoyl glutamate, disodium cocoyl glutamate, potassium cocoyl glutamate, triethanolamine cocoyl glycinate, triethanolamine cocoyl glutamate, sodium cocoyl alaninate, potassium cocoyl alaninate and supramolecular amino acid surfactant.

Preferably, the anionic surfactant is at least one of linear sodium dodecyl benzene sulfonate, fatty alcohol polyoxyethylene ether sulfate, fatty acid methyl ester sulfonate and alpha-alkenyl sulfonate, and further preferably, the anionic surfactant is linear sodium dodecyl benzene sulfonate and fatty alcohol polyoxyethylene ether sulfate.

The straight-chain sodium dodecyl benzene sulfonate and the fatty alcohol polyoxyethylene ether sodium sulfate have good emulsifying, dispersing and wetting properties, are favorable for reducing the surface tension of the liquid, are easier to mix with other substances, and improve the stability of the liquid.

The nonionic surfactant can be at least one of fatty alcohol polyoxyethylene ether, fatty acid methyl ester ethoxylate, fatty alcohol ethoxylate, fatty amine alkoxylate, modified fatty alcohol ethoxylate, and alkyl polyglycoside. Preferably, the nonionic surfactant includes at least one of fatty alcohol polyoxyethylene ethers, fatty acid methyl ester ethoxylates, and modified grease ethoxylates.

The mass ratio of the anionic surfactant to the nonionic surfactant is (1-5): 1, the mass ratio of specific anionic surfactant to nonionic surfactant may be 4:1, 3:1, 2:1, 1:1, etc. The carbon chain distribution of the fatty alcohol polyoxyethylene ether is C10-C16, wherein the C12-C14 accounts for more than 85 percent, the ethoxy number is 4-10, and the fatty alcohol polyoxyethylene ether comprises fatty alcohol polyoxyethylene ether 9 (AE 09), fatty alcohol polyoxyethylene ether 7 (AE 07) and the like according to the different values.

The high molecular surfactant is polyoxyethylene-polyoxypropylene segmented copolymer, which is a copolymer of polyoxyethylene and polypropylene of special ethanol, and the molecular formula of the polyoxyethylene-polyoxypropylene segmented copolymer is as follows:

wherein: the value of x+y+z may range from 100 to 200, preferably the value of x+y+z ranges from 120 to 180. The ratio of the polymerization degree of ethylene oxide to propylene oxide in the polyoxyethylene-polyoxypropylene block copolymer may be in the range of 1.0 to 4.0, and preferably the ratio of polyoxyethylene to polyoxypropylene in the polyoxyethylene-polyoxypropylene block copolymer is in the range of 2.2 to 4.0.

Wherein the ratio of EO number to PO number also affects the hydrophilicity and lipophilicity of the nonionic surfactant, the lipophilic-hydrophilic balance (HLB) is a value used to describe the balance between the lipophilicity and the hydrophilicity of the surfactant, and the HLB value typically ranges from 0 to 20, with HLB values in different ranges having different effects on the nature and application of the surfactant. The polymerization degree ratio of ethylene oxide and propylene oxide in the polyoxyethylene-polyoxypropylene block copolymer is in the range of 2.2-4.0, and the micelle structure and the hydrophilicity/hydrophobicity of the surfactant reach equilibrium values so as to improve the liquid stability. The polyoxyethylene-polyoxypropylene block copolymer may have a hydrophilic-lipophilic balance in the range of 10.0-18.0, preferably the polyoxyethylene-polyoxypropylene block copolymer has a hydrophilic-lipophilic balance in the range of 14.0-15.5.

The application limits the lipophilic-hydrophilic balance (HLB) within 14.0-15.5, so that the oil-water mixed emulsion has better lipophilicity and hydrophilicity, can emulsify oil and dissolve nonpolar substances, and can form stable solution with water. When the polyoxyethylene-polyoxypropylene block copolymer and the nonionic surfactant are added at the same time, the proportion of the polyoxyethylene-polyoxypropylene block copolymer to the total mass of the nonionic surfactant is more than or equal to 30 percent.

The surfactant solution mainly has 3 states from thin to thick, namely a single molecule solution, a micelle solution and a liquid crystal state, and different liquid crystal states have different rheological properties, and the rheological properties can influence the preparation of the laundry detergent. Taking the nonionic surfactant AEO9 as an example, referring to FIGS. 2 and 3, when the concentration is in the range of 0-20%, the viscosity is very low, mainly in the isotropic micelle solution zone; when the concentration is in the range of 20-50%, the viscosity of the AEO9 begins to gradually increase and is converted into a liquid crystal phase, the AEO9 in a colloid state is insoluble under the intervention of no external condition, the production of the detergent is influenced, and the surface activity of the dissolved AEO9 needs higher temperature, a large amount of time and a large amount of solubilizer, so that the production cost is increased.

According to experiments, the viscosity change of the polyoxyethylene-polyoxypropylene block copolymer aqueous solution and the viscosity change of the fatty alcohol polyoxyethylene ether aqueous solution are greatly different, and referring to figure 1, the ordinary surface activity, namely the viscosity-concentration relation curve of the nonionic surfactant adopted in the prior art, is parabolic, namely the viscosity is increased with the concentration, and then is reduced, but the viscosity of the polyoxyethylene-polyoxypropylene block copolymer aqueous solution is gradually increased with the concentration. This is due to the unique rheological properties of polymeric surfactants, which change viscosity with concentration, temperature, electrolyte, and agitation rate after dissolution in water. Some of them have pseudoplasticity, or newtonian mechanical properties, or are non-newtonian fluids, most of which have thickening properties and therefore often act as colloidal protectants. Based on the above, the inventors further found that the aqueous solution of the high molecular polyether surfactant with the concentration ranging from 0% to 100% has low viscosity, does not form a gel body, is easy to dissolve in the production and use process, saves the cost and time, reduces the production cost, and can be better applied to the preparation of the laundry detergent, particularly the concentrated laundry detergent.

The antiseptic auxiliary agent is at least one of lactic acid, sodium benzoate, cocamidopropyl PG-dimethyl ammonium chloride phosphate, polylysine, lauroyl arginine ethyl ester hydrochloride, nano silver, octanoyl hydroxamic acid, glycerol caprylate, lauric acid monoglyceride, polyene heterocyclic epoxy mannose sugar mixture, 1, 2-pentanediol, 1, 2-hexanediol, octanoyl glycol and ethylhexyl glycerol. Preferably, the preservative aid may be at least one of lactic acid, sodium benzoate, and cocamidopropyl PG-dimethylammonium chloride phosphate.

Lactic acid is an organic acid of natural origin, which can be obtained from natural sources by fermentation, such as sugars and starches. Compared with the synthetic chemical preservative, the lactic acid has higher safety, can not irritate skin or eyes, can not cause anaphylactic reaction, and is more suitable for people with sensitive skin. The sodium benzoate has high stability, is not easy to be influenced by temperature and pH value, can keep the antiseptic effect under different environmental conditions, and ensures the quality and the safety of the laundry detergent.

The non-phosphorus chelating agent is at least one of citric acid, sodium citrate, trisodium citrate, iminodisuccinic acid, tetrasodium glutamate diacetate and trisodium methylglycine diacetate. Preferably, the non-phosphorus chelating agent may be at least one of sodium citrate and tetrasodium glutamate diacetate.

The thickener is at least one of sodium chloride, sodium sulfate, polyacrylic polymer, modified starch, cellulose ether and its derivatives (polyanion cellulose, hydroxyethyl cellulose, methyl hydroxyethyl cellulose, propylene glycol, methyl hydroxypropyl cellulose), fatty alcohol polyoxyethylene ether (C12-C18, EO number is 2.0-4.0) polyoxyethylene methyl glucose ester, polyoxyethylene distearate, guar gum, and alkanolamide. Preferably, the thickener may be at least one of sodium chloride, sodium sulfate, and fatty alcohol polyoxyethylene ethers.

The solubilizer is at least one of ethanol, propylene glycol, butanol, n-octanol, sodium xylene sulfonate, polyalcohol, urea, short-chain benzene sulfonate, alkyl phosphate, glycol ether and propylene glycol ether. Preferably, the solubilizer is at least one of sodium xylene sulfonate and propylene glycol.

Examples

Example 1

Preparation of 100Kg of ordinary laundry detergent:

1. mixing and stirring 0.5Kg of tetra sodium glutamate diacetate or 1Kg of sodium citrate, 7Kg of straight-chain sodium dodecyl benzene sulfonate (LAS), 3Kg of polyoxyethylene-polyoxypropylene block copolymer (hereinafter referred to as macromolecular polyether) and 6Kg of fatty alcohol polyoxyethylene ether sodium sulfate to prepare a premix;

2. then adding 1Kg lactic acid or 1Kg sodium benzoate, 0.5Kg sodium chloride and 0.5Kg sodium sulfate in turn, adding deionized water to 100Kg, stirring to mix uniformly, and obtaining the common laundry detergent.

Examples 2-6 differ from example 1 in the raw material formulation and amounts employed, and reference is specifically made to Table 1 in which LAS is a short term for sodium linear dodecylbenzenesulfonate; AES is an abbreviation for sodium fatty alcohol polyoxyethylene ether sulfate.

TABLE 1 formula and dosage of general laundry detergent

Examples 7 to 10

In examples 7-10, concentrated liquid laundry detergent was prepared, and when concentrated liquid laundry detergent was prepared, a solubilizing agent was added to the premix, and differences between examples 7-10 and example 1 also include differences in raw material formulation and amounts of concentrated liquid laundry detergent, and reference may be made to table 2.

TABLE 2 concentrated laundry detergent raw material formulation

Comparative example

Comparative examples 1-5 the general laundry detergent controls were prepared in comparative examples 1-5, the preparation method of the general laundry detergent controls was the same as that of example 1, and the comparative examples 1-5 were different from example 1 in the raw material formulation and the amount of the general laundry detergent controls were different, and refer to table 3.

TABLE 3 raw material formulation of general laundry detergent reference

Comparative examples 6 to 8

The concentrated laundry detergent control was prepared in comparative examples 6 to 8, and the preparation method of the concentrated laundry detergent control was the same as that of examples 7 to 10, and the differences between comparative examples 6 to 8 and examples 7 to 10 were that the raw material formulation and the amount of the concentrated laundry detergent control were different, and refer to table 4.

TABLE 4 concentrated laundry detergent control formulation and dosage

Experiment and experimental data experiment one: the detergent detergency tests were carried out on the ordinary type liquid laundry detergent prepared in examples 1 to 6 and the ordinary type liquid laundry detergent control prepared in comparative examples 1 to 5 with reference to GB/T13174-2008 "determination of detergency of detergents for clothing and cycle washing Performance".

1. The concentration of the detergent for the common type liquid laundry detergent and the reference detergent for the common type liquid laundry detergent is 0.2%, and the concentration of the standard liquid laundry detergent is 0.2%.

2. The detergency was calculated as: the detergency of the laundry detergent is characterized by a dirty cloth decontamination ratio P,

wherein:

after Wi: whiteness value of the polluted cloth washed by the sample laundry detergent;

before Wi: the whiteness value of the polluted cloth before washing the sample laundry detergent;

after Wo: whiteness value of the polluted cloth washed by the standard laundry detergent;

before Wo: dirty cloth whiteness value before washing in standard laundry detergent.

The detergency results are shown in Table 5.

TABLE 5 detergency of ordinary laundry detergent and ordinary laundry detergent control

3. The concentrated laundry detergent prepared in examples 7 to 10 and the concentrated laundry detergent control prepared in comparative examples 6 to 8 were subjected to detergency tests, the concentration of the concentrated laundry detergent and the concentrated laundry detergent control were both 0.067% and the standard laundry detergent concentration was 0.2%, the detergency calculation method was the same as that of the ordinary laundry detergent, and the detergency results were shown in table 6.

TABLE 6 detergency of concentrated laundry detergent and concentrated laundry detergent control

Conclusion: according to the detergency result, whether a common laundry liquid system or a concentrated laundry liquid system is obtained, the detergency to sebum stains of the general laundry liquid system or the concentrated laundry liquid system is better than that of conventional nonionic surfactants such as fatty alcohol polyoxyethylene ether, fatty acid methyl ester ethoxylate, modified grease ethoxylate and the like by adding the macromolecular polyether surfactant into the formula; the detergency to sebum stains can be obviously improved by adopting the macromolecular polyether surfactant and the conventional nonionic surfactant for compounding, and the detergency to sebum stains of the embodiment containing the macromolecular polyether surfactant is more than 1.20.

Experiment II: the high-efficiency detergency of the polyoxyethylene-polyoxypropylene block copolymer is tested, and the detergency of the common type liquid detergent is tested by referring to GB/T13174-2008 determination of detergency and cycle washing Performance of detergents for clothing, wherein the concentration of the detergency test of the common type liquid detergent is 0.2%, and the concentration of the standard liquid detergent is 0.2%.

The detection method comprises the following steps: according to the test result of experiment one, the polyoxyethylene-polyoxypropylene block copolymer has strong detergency to sebum stains, and experiment two, in order to reduce the comparison of the use amount of the polyoxyethylene-polyoxypropylene block copolymer with the detergency of AEO9, experiment groups 1-3 were designed, and the detergency of the ordinary laundry detergent and the ordinary laundry detergent control prepared in example 2, experiment groups 1-3 and comparative example 2 were respectively tested, wherein the difference between the experiment groups 1-3 is that the raw material formulation and the use amount are different, as shown in the following table 7:

TABLE 7 general laundry detergent materials and amounts

The experimental data and detergency are shown in table 8, and the detergency is the same as the calculation method of the detergency of the ordinary laundry detergent:

TABLE 8 detergency of general laundry detergent

Conclusion: according to the experimental result of the experiment II, after the consumption of the polyoxyethylene-polyoxypropylene block copolymer is reduced, the experimental groups 1-3 still have better detergency, the detergency is still equivalent to that of AEO9 when the consumption of the polyoxyethylene-polyoxypropylene block copolymer is 1/4 of that of the fatty alcohol polyoxyethylene ether (AEO 9), and the detergency of sebum dirt cloth is still greater than 1.20 when the consumption of the polyoxyethylene-polyoxypropylene block copolymer is 1/3 of that of the fatty alcohol polyoxyethylene ether (AEO 9), which indicates that the polyoxyethylene-polyoxypropylene block copolymer has high-efficiency removal capability on sebum dirt.

To sum up: according to the application, the polyoxyethylene-polyoxypropylene segmented copolymer is compounded with the conventional additive of the laundry detergent, so that the detergency of the laundry detergent on sebum stains can be obviously improved, and the detergency of the sebum stains is enabled to break through 1.20.

The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims (10)

1. The liquid laundry detergent with the strong detergency on sebum stains is characterized by comprising the following raw materials in percentage by weight:

5 to 30 percent of anionic surfactant, 0.5 to 21 percent of macromolecular surfactant, 0 to 25 percent of nonionic surfactant, 1 to 5 percent of preservative auxiliary agent, 0.1 to 3 percent of non-phosphorus chelating agent, 0.5 to 1 percent of thickener, 0 to 10 percent of solubilizer and 100 percent of deionized water;

the polymeric surfactant comprises a polyoxyethylene-polyoxypropylene block copolymer.

2. The laundry detergent with strong detergency on sebum stains according to claim 1, wherein the polyoxyethylene-polyoxypropylene block copolymer has the structural formula:

wherein: the value of x+y+z ranges from 120 to 180.

3. The laundry detergent with strong detergency on sebum stains according to claim 2, characterized in that: the polymerization degree ratio of the ethylene oxide to the propylene oxide in the polyoxyethylene-polyoxypropylene block copolymer ranges from 2.2 to 4.0, and the molecular weight of the polyoxyethylene-polyoxypropylene block copolymer ranges from 4500 to 7500.

4. A laundry detergent with strong detergency on sebum stains according to claim 3, characterized in that: the polyoxyethylene-polyoxypropylene block copolymer has a hydrophilic-lipophilic balance value in the range of 14.0-15.5.

5. The laundry detergent with strong detergency on sebum stains according to claim 1, characterized in that: the nonionic surfactant comprises at least one of fatty alcohol polyoxyethylene ether, fatty acid methyl ester ethoxylate and modified grease ethoxylate; when the polyoxyethylene-polyoxypropylene block copolymer and the nonionic surfactant are added at the same time, the proportion of the polyoxyethylene-polyoxypropylene block copolymer to the total mass of the nonionic surfactant is more than or equal to 30 percent.

6. The laundry detergent with strong detergency on sebum stains according to claim 5, characterized in that: the mass ratio of the anionic surfactant to the nonionic surfactant is (1-5): 1.

7. the laundry detergent with strong detergency on sebum stains according to claim 5, characterized in that: the carbon chain distribution in the fatty alcohol-polyoxyethylene ether is C10-C16, wherein the ratio of C12-C14 is more than 85%, and the ethoxy number is 4-10.

8. The laundry detergent with strong detergency on sebum stains according to claim 1, characterized in that: the anionic surfactant is at least one selected from linear sodium dodecyl benzene sulfonate, fatty alcohol polyoxyethylene ether sulfate, fatty acid methyl ester sodium sulfonate and alpha-alkenyl sulfonate.

9. The laundry detergent with strong detergency on sebum stains according to claim 1, characterized in that: the preservative aid is at least one selected from lactic acid, sodium benzoate and cocamidopropyl PG-dimethyl ammonium chloride phosphate.

10. A process for the preparation of a laundry detergent with strong detergency on sebum stains according to any one of claims 1 to 9, comprising:

mixing the non-phosphorus chelating agent, the anionic surfactant, the macromolecular surfactant, the nonionic surfactant and the solubilizer in sequence to prepare a premix;

and sequentially adding the anti-corrosion auxiliary agent, the thickening agent and the deionized water into the premix, and stirring and mixing to obtain the liquid laundry detergent.