Detergent composition as well as preparation method and application thereof

Abstract

The invention discloses a detergent composition, a preparation method and application thereof, the raw materials comprise a nonionic surfactant, an alkylamine derivative, an auxiliary agent, an organic solvent and water, the structural formula of the alkylamine derivative is # imgabs0 #, R1 is alkyl or alkylene and has 8-18 carbon atoms, R2 is alkyl or alkylene, and R3 is alkyl or alkylene with 8-18 carbon atoms; r2 is alkyl alcohol or polyoxyethylene ether; and R3 is H or alkyl alcohol or polyoxyethylene ether. The cleaning agent comprises the following raw materials in percentage by mass: 10-50% of a nonionic surfactant, 5-30% of an alkylamine derivative, 1-10% of an auxiliary agent, 0-5% of an organic solvent and the balance of water. The raw materials of the detergent composition do not contain anionic surfactants, the detergent composition can be used in cooperation with cationic functional components, the alkylamine derivatives, the auxiliaries and the like are added into the raw materials, the low-temperature stability of the nonionic surfactants is improved, the gelation process of the nonionic surfactants is destroyed, on the basis that the washing performance is guaranteed, the detergent composition is easy to pour or pump, and the washing effect is good. The use of solvents is reduced and the cost is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of detergents, and specifically relates to a detergent composition without anionic surfactants, a preparation method thereof, and an application thereof. Background Art

[0002] A detergent is a product specially formulated for cleaning through a washing process. There are many types of detergents, which can be divided into various forms such as powder, block, paste, slurry, and liquid according to the shape of the product. The commonly used surfactants in detergents include cationic surfactants, anionic surfactants, amphoteric surfactants, and nonionic surfactants.

[0003] Since anionic surfactants carry negative charges and form hydrophilic anionic micelles in water, they have good detergency, can disperse stains to prevent them from sticking back to clothes or tableware, and also have good thickening ability, making it easy to pour or pump out using a pump head. Therefore, most common liquid detergents, such as laundry detergents and dishwashing liquids, contain anionic surfactants. However, the residue of anionic surfactants on clothes can cause certain irritation to the skin, and it is easy to make wool fabrics fuzz, deform, and fade, so it is not suitable for washing wool fabrics, and its cleaning ability is also greatly affected by temperature. In addition, due to the problem that cations and anions cannot coexist, some cationic functional ingredients cannot be used in products containing anionic surfactants, such as cationic fungicides, cationic fabric softeners, cationic color fixatives, cationic conditioners, etc. Therefore, it is necessary to develop a detergent that can be compatible with cations and ensure the washing effect.

[0004] Although nonionic surfactants can be compatible with cationic surfactants, when the content of nonionic surfactants is relatively high, jelly-like gels are likely to form at low temperatures, making it difficult to pour or pump into the washing machine. Chinese Patent with Application No. 202210992930.4 discloses a cleaning agent for a laundry dragon device and a preparation method thereof. In this patent, a cleaning agent without anionic surfactants is prepared by a composite of nonionic and cationic surfactants and other auxiliaries. Although it plays a role in cleaning stains and is environmentally friendly, in order to improve the low-temperature stability of the product, the addition amount of organic solvents is as high as 30 - 40%. The addition of a large amount of organic solvents not only does not improve the washing effect, but also causes a significant increase in cost and is not environmentally friendly.

[0005] Therefore, how to obtain a fully nonionic liquid detergent with good low-temperature stability at low cost is a technical problem to be solved.

[0006] In view of this, the present invention is specifically proposed. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a detergent composition. The raw materials do not contain anionic surfactants, can be used in combination with cationic active ingredients, and by adding an alkylamine derivative to the raw materials, the low-temperature stability of the non-ionic surfactant is improved, its gelation process is disrupted, while ensuring the washing performance, it is easy to pour or pump, reducing the use of organic solvents, lowering costs, and being more environmentally friendly.

[0008] To solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0009] A detergent composition, the raw materials of which include a non-ionic surfactant and an alkylamine derivative, and the structural formula of the alkylamine derivative is:

[0010]

[0011] Wherein, R1 is an alkyl group or an alkenyl group having 8 to 18 carbon atoms; R2 is an alkyl alcohol or a polyoxyethylene ether group; R3 is H or an alkyl alcohol or a polyoxyethylene ether group.

[0012] In the above solution, when the non-ionic surfactant is added to a certain amount, such as when the content of the non-ionic surfactant in the raw materials is greater than or equal to 30%, it is prone to gelation at normal temperature or even low temperature to produce a jelly-like gel, which is difficult to dissolve, pour, or pump, resulting in inconvenient use and not being conducive to automated production. Gelation is a network structure formed by the orderly arrangement of surfactant small molecules through intermolecular non-covalent interactions, such as electrostatic interactions, hydrogen bonds, hydrophobic interactions, van der Waals forces, etc. Therefore, disrupting gelation means disrupting the orderly structure between molecules. Generally, non-ionic surfactants have a linear molecular structure with high orderliness, while alkylamine derivatives have a Y-shaped structure, which can effectively disrupt the orderly structure of non-ionic surfactants, thereby disrupting the gelation process, improving their low-temperature stability, reducing the use of organic solvents, and lowering costs.

[0013] At the same time, when R1 has 8 to 18 carbon atoms, it can ensure that the alkylamine derivative has both solubilizing properties and surface activity, and has detergency. It can not only disrupt the gelation of non-ionic surfactants under certain conditions, but also assist in improving the washing performance; when the number of carbon atoms is less than 8, the alkylamine derivative is only equivalent to a solubilizer, although it shows solubilizing properties, it has no surface activity and no detergency; when the number of carbon atoms is greater than 18, the alkylamine derivative is more of an oil and is a softener, mainly making clothes smooth, and also has no detergency.

[0014] Compared with the traditional method of solving the gel problem of non-ionic surfactants by increasing the amount of organic solvents, organic solvents not only have high costs, are environmentally unfriendly, and have no washing effect. In contrast, under the above limitations, the alkylamine derivatives in the present invention are also equivalent to a kind of surfactant, which can not only improve the low-temperature stability of non-ionic surfactants, but also assist in improving the washing performance. Therefore, by adding alkylamine derivatives to the raw materials, improvements have been achieved in terms of washing performance, environmental protection, and cost.

[0015] Furthermore, the alkylamine derivative is selected from one or a combination of two of polyoxyethylene alkylamine and bis(2-hydroxyethyl)oleylamine.

[0016] Preferably, the degree of polymerization of the polyoxyethylene alkylamine is 2 to 10;

[0017] More preferably, the degree of polymerization of the polyoxyethylene alkylamine is 5.

[0018] In the above scheme, when the alkylamine derivative is selected from polyoxyethylene alkylamine, polyoxyethylene alkylamine has high surface activity. When the degree of polymerization is in the range of 2 to 10, the surface tension and cmc value of its aqueous solution are also low, and the micelle aggregation number is large, with strong solubilization ability, good emulsifying ability and washing effect, and can be used for the production of high-efficiency detergents and emulsifiers; at the same time, due to its organic amine structure, polyoxyethylene alkylamine also has some characteristics of non-ionic surfactants and cationic surfactants, such as certain bactericidal properties; as well as low irritation and good acid-base stability.

[0019] Furthermore, by mass percentage, the non-ionic surfactant is 10 to 50%, and the alkylamine derivative is 5 to 30%;

[0020] Preferably, by mass percentage, the non-ionic surfactant is 20 to 45%, and the alkylamine derivative is 5 to 20%.

[0021] Furthermore, the sum of the masses of the non-ionic surfactant and the alkylamine derivative is greater than 30% of the total mass of the raw materials.

[0022] In the above solution, by reasonably adjusting the addition amounts of the nonionic surfactant and the alkylamine derivative so that their total mass is greater than 30% of the total mass of the raw materials. On the one hand, when the content of the nonionic surfactant is small and no gelation occurs at low temperature, it acts together with the alkylamine derivative to ensure the washing performance of the detergent composition. On the other hand, when the content of the nonionic surfactant is large and gelation easily occurs at low temperature, due to the presence of the alkylamine derivative, the ordered structure of the nonionic surfactant is destroyed, thus destroying the gelation process. It can solve the problem that when the nonionic surfactant is added to a certain amount, it easily gels at normal temperature or even low temperature to produce a jelly-like gel, improves its low-temperature stability, greatly reduces the use of organic solvents, is environmentally friendly and reduces costs.

[0023] Furthermore, the raw materials further include additives, organic solvents and water;

[0024] Preferably, by mass percentage, the additives are 1-10%, the organic solvents are 0-5%, and the balance is water.

[0025] Furthermore, the nonionic surfactant is selected from one or a combination of more of alkyl alcohol alkoxylates, alkyl polyglucosides, fatty acid alkoxylates, fatty acid ethoxylates, fatty acid alkylolamides, and ethoxylated sorbitan fatty acid esters;

[0026] Preferably, the nonionic surfactant is selected from alkyl alcohol alkoxylates;

[0027] More preferably, the nonionic surfactant is selected from linear alkyl alcohol alkoxylates;

[0028] More preferably, the nonionic surfactant is selected from one or a combination of more of ethoxylated fatty alcohols, ethoxylated isodecanols, and ethoxylated isotridecanols.

[0029] In the above solution, the nonionic surfactant has good compatibility with other types of surfactants and can be used in combination with cationic active ingredients; the nonionic surfactant does not exist in an ionic state in the solution, so it has high stability, is not easily affected by the presence of strong electrolytes, nor is it easily affected by acids and bases. It can be mixed with other types of surfactants, has good compatibility, has good solubility in various solvents, does not strongly adsorb on the solid surface, and is easy to rinse; it has various properties such as good washing, dispersion, emulsification, foaming, wetting, solubilization, antistatic, leveling, corrosion prevention, sterilization, and protecting colloids.

[0030] Since the detergent formulation contains an alkali agent, when the nonionic surfactant is selected from ethoxylated fatty alcohols, ethoxylated isodecanols, ethoxylated isotridecanols, etc., the ethoxy compounds produced by ethoxylation can increase its tolerance to alkaline conditions and the activity is more stable.

[0031] Further, the auxiliary agent is selected from one or a combination of more of inorganic salts, enzyme preparations, alkali agents, viscosity regulators, pH stabilizers, preservatives, colorants, fluorescent whitening agents, color stabilizers and flavoring agents.

[0032] Preferably, the enzyme preparation is alkaline protease; the preservative is a mixture of methylisothiazolinone and chloromethylisothiazolinone.

[0033] In the above scheme, the addition of the auxiliary agent can assist in destroying the gelation process of the nonionic surfactant and can also improve the washing performance of the detergent composition. For example, the salting-out effect of the inorganic salt can assist in destroying the gelation process of the nonionic surfactant. Moreover, when the water quality is relatively hard, it will lead to a poor washing effect and more dirt residue. The addition of the inorganic salt can not only soften the water quality but also provide ions for the detergent composition, giving it a certain conductivity so that the prepared detergent composition can be applied to automatic dosing washing equipment using conductivity as a sensor; the addition of the enzyme preparation can effectively remove stubborn stains such as blood stains, milk stains, grass stains, etc., and can also remove odors; the addition of the alkali agent can effectively remove oily stains, etc.

[0034] Further, the organic solvent is selected from one or a combination of more of ethanol, glycerol, propylene glycol, sorbitol, polyethylene glycol, diethylene glycol butyl ether, dipropylene glycol methyl ether, tripropylene glycol methyl ether, diethylene glycol butyl ether acetate, dipropylene glycol butyl ether and tripropylene glycol butyl ether.

[0035] A preparation method of a detergent composition for preparing a detergent composition as described above, the method comprising:

[0036] First, add water to the preparation tank according to the mass percentage, and then successively add the nonionic surfactant, alkylamine derivative, auxiliary agent and organic solvent according to the mass percentage and stir until completely dissolved, and after post-treatment, obtain a uniform detergent composition;

[0037] Preferably, the post-treatment includes: adding a pH regulator while stirring;

[0038] Preferably, the pH regulator is citric acid or sodium hydroxide, and the pH is adjusted to a required range according to the application scenario of the prepared detergent composition.

[0039] An application of a detergent composition, applying the detergent composition as described above in a washing equipment;

[0040] Preferably, it is applied in an automatic dosing washing equipment.

[0041] In the above solution, due to the addition of the alkylamine derivative, the low-temperature stability of the nonionic surfactant is improved, and its gelation process is disrupted. On the basis of ensuring the washing performance, it is easy to pour or pump. Therefore, it can be applied to washing equipment with automatic dosing.

[0042] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0043] 1. The present invention provides a detergent composition. The raw materials do not contain anionic surfactants and can be used in combination with cationic active ingredients. By adding an alkylamine derivative to the raw materials, the low-temperature stability of the nonionic surfactant is improved, and its gelation process is disrupted. On the basis of ensuring the washing performance, it is easy to pour or pump, reducing the use of organic solvents, lowering costs, and being more environmentally friendly.

[0044] 2. The present invention also provides an application of a detergent composition. Due to the addition of the alkylamine derivative, the low-temperature stability of the nonionic surfactant is improved, and its gelation process is disrupted. On the basis of ensuring the washing performance, it is easy to pour or pump. At the same time, due to the addition of the inorganic salt auxiliary agent, ions are provided for the detergent composition, giving it a certain conductivity, so that the prepared detergent composition can be applied to washing equipment with automatic dosing using conductivity as a sensor. Detailed Embodiments

[0045] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the following describes the technical solutions of the present invention clearly and completely in conjunction with some embodiments. Those skilled in the art can understand that the following embodiments are only used to explain the technical principle of the present invention and are not intended to limit the protection scope of the present invention. For example, although the steps of the method of the present invention are described in a specific order in this application, these orders are not restrictive. Without departing from the basic principle of the present invention, those skilled in the art can execute the steps in a different order.

[0046] It should be noted that:

[0047] 1. Nonionic surfactant:

[0048] (1) AEO9: Ethoxylated fatty alcohol with an average ethoxylation degree of 9;

[0049] (2) XL-80: Ethoxylated isomeric decanol with an average ethoxylation degree of 8;

[0050] (3) TO-8: Ethoxylated isomeric tridecanol with an average ethoxylation degree of 8.

[0051] 2. Enzyme preparation: Alkaline protease, a product of Novozymes, with the trade name Savinase Ultra 16XL.

[0052] 3. Preservative: A mixture of methylisothiazolinone and chloromethylisothiazolinone.

[0053] 4. The stability of the embodiments of the present invention is defined as that after being stored under certain conditions for a period of time, there are no significant phenomena such as stratification, precipitation, flocculation, solidification, etc. in the appearance of the detergent composition.

[0054] The stability involved in the present invention can be tested by a storage stability test:

[0055] (1) High-temperature stability: After the detergent composition is bottled and sealed, it is placed in an environment of 45°C ± 1°C and kept at a constant temperature for 1 month, and then restored to room temperature of 25°C ± 5°C. If there are no significant changes in the appearance of the detergent composition, such as no stratification, turbidity, gel or precipitation, it is qualified for high-temperature stability;

[0056] (2) Low-temperature stability: After the detergent composition is bottled and sealed, it is placed in an environment of 0°C ± 2°C and kept at a constant temperature for 1 month, and then taken out and observed immediately. If there are no significant changes in the appearance of the composition, such as no stratification, turbidity, gel or precipitation, it is qualified for low-temperature stability;

[0057] (3) Room-temperature stability: After the detergent composition is bottled and sealed, it is placed in a room-temperature environment (20°C - 30°C) for 1 month. If there are no significant changes in the appearance of the detergent composition, such as no stratification, turbidity, gel or precipitation, it is qualified for room-temperature stability.

[0058] 5. The method for detergency test is as follows: Refer to "GB / T 13174 2008 Determination of Detergency and Recycling Washing Performance of Detergents for Clothing" for the detergency test. Among them, the P value represents the detergency ratio. Generally, taking a standard laundry detergent as a reference sample, its test concentration is 2 g / L, and its detergency ratio is set to 1.00. The higher the P value, the better the cleaning power. P1, P2, and P3 respectively refer to the detergency ratios measured for different stains.

[0059] Example 1

[0060] (1) First, add water with a mass percentage of 53.1% to the preparation tank;

[0061] (2) Then, sequentially add 30% of AEO9, 10% of polyoxyethylene alkylamine, 2% of propylene glycol, 1% of sodium citrate, 3% of sodium chloride, 0.4% of protease, 0.2% of essence, and 0.3% of preservative by mass percentage and stir until completely dissolved;

[0062] (3) The pH value is adjusted to 7-8 with citric acid and sodium hydroxide, and then stirred until the appearance is uniform to obtain a detergent composition.

[0063] Experimental Example 1

[0064] In this experimental example, according to the preparation method of the detergent composition in Example 1, by adjusting the type and percentage of each raw material, Examples 2-5 and Comparative Examples 1-7 were prepared, and the stability and decontamination ability of the prepared detergent compositions were tested. The results are shown in Table 1.

[0065] Table 1

[0066]

[0067]

[0068] As shown in Table 1, in Examples 3 and 5, since the content of the added nonionic surfactant is less than 30%, gelation will not occur at low temperatures, and the nonionic surfactant works together with the alkyl derivative to make the sum of their masses exceed 30% of the total mass of the raw materials in order to ensure the washing performance of the detergent composition; in Examples 1, 2, and 4, the content of the nonionic surfactant added is greater than or equal to 30%, and gelation is likely to occur at low temperatures, but the addition of the alkyl derivative destroys the gelation process, thereby improving the low-temperature stability of the nonionic surfactant, and only a small amount of organic solvent needs to be added or even no organic solvent is added to ensure the stability of the detergent composition, while ensuring the washing performance and reducing the cost.

[0069] Compared with Comparative Example 1, although the sum of the added amounts of the nonionic surfactant and the alkylamine derivative is the same in Example 1 and exceeds 30% of the total mass of the raw materials, and the content of the nonionic surfactant is also greater than 30%, gelation will occur at low temperatures, but since the alkylamine derivative is added in Example 1, the gelation process is destroyed, and therefore only a small amount of organic solvent needs to be added, while no alkylamine derivative is added in Comparative Example 1, so a large amount of organic solvent needs to be added, which is not good for the environment and increases the cost, and because the organic solvent itself has no decontamination ability, while the alkylamine derivative has decontamination ability, therefore, the detergent composition prepared in Comparative Example 1 not only has poor stability and high cost, but also has inferior decontamination ability to the detergent composition prepared in Example 1.

[0070] Compared with Example 4, although the amount of non-ionic surfactant added in Comparative Example 1 is the same, no alkylamine derivative is added in Comparative Example 1. After adding a large amount of organic solvent, it only ensures that the detergent composition does not solidify at high temperature and room temperature, and it will still solidify at low temperature.

[0071] Comparative Example 2 and Example 4 were compared. Although the amount of non-ionic surfactant added was the same, organic solvent and alkylamine derivative were not added in Comparative Example 2. Under the three temperature conditions, the stability of the detergent composition could not be ensured.

[0072] Moreover, by comparing Example 5 with Comparative Example 3 and Comparative Example 4, it was found that the detergency of the detergent compositions prepared in Example 5 and Comparative Example 3 or Comparative Example 4 was close, indicating that polyoxyethylene alkylamine had detergency and had a detergency equivalent to that of non-ionic surfactants TO-8 or XL-80.

[0073] Compared with Example 5, in Comparative Example 5, the sum of the addition amounts of non-ionic surfactant and alkylamine derivative did not exceed 30% of the total mass of the raw materials. Therefore, the content of the corresponding non-ionic surfactant did not exceed 30% either. Gelation generally did not occur under the three temperature conditions, and the prepared detergent composition could be poured or pumped. However, the detergency of the detergent composition prepared in Comparative Example 5 was poor, and only when the usage amount was large could it reach the same detergency as Example 5.

[0074] Comparative Example 6 was compared with Example 1. Only the type of alkylamine derivative was changed to triethanolamine, and other conditions remained unchanged. As can be seen from Table 1, for the detergent composition prepared in Comparative Example 6, obvious gelation occurred during low-temperature storage. This was because in the alkylamine derivative selected in Comparative Example 6, R1, R2, and R3 were all hydroxyethyl groups. Although a Y-shaped structure could be formed, since the number of carbon atoms in R1 was small, it was actually a kind of base and did not have the ability to destroy gelation and surface activity. Therefore, the detergent composition prepared in Comparative Example 6 not only showed gelation at low temperature but also had a lower detergency than Example 1.

[0075] Comparative Example 7 was compared with Example 1. Only the type of alkylamine derivative was changed to coconut oil amide propyl amine oxide, and other conditions remained unchanged. As can be seen from Table 1, for the detergent composition prepared in Comparative Example 7, obvious gelation occurred during low-temperature storage. This was because the coconut oil amide propyl amine oxide selected in Comparative Example 7 was a thickening surfactant. In its structure, N was connected to four groups, R1 was coconut oil amide propyl, R2 and R3 were methyl groups, and R4 was O. It was equivalent to that the ammonium ion was a tetrahedral structure rather than a Y-shaped structure, and R2 and R3 were small. Therefore, it did not have a significant ability to destroy gelation.

[0076] Experimental Example 2

[0077] In this experimental example, compatibility tests were carried out on the detergent compositions prepared in Examples 1-5:

[0078] Since the prepared detergent composition does not contain an anionic surfactant, 1% of the cationic surfactant benzalkonium chloride was added to Examples 1-5 respectively, and no precipitate was produced in the test results, that is, the detergent composition prepared by the present invention can be used in combination with the cationic surfactant.

[0079] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to the equivalent embodiments by using the technical content prompted above within the scope of the technical solution of the present invention. However, as long as the content does not depart from the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still fall within the scope of the present invention.

Claims

1. A detergent composition, characterized in that, The raw materials include a nonionic surfactant and an alkylamine derivative, and the structural formula of the alkylamine derivative is: Wherein, R1 is an alkane group or an alkene group having 8 to 18 carbon atoms; R2 is an alkyl alcohol or a polyoxyethylene ether; R3 is H or an alkyl alcohol or a polyoxyethylene ether.

2. The detergent composition according to claim 1, characterized in that, The alkylamine derivative is selected from one or a combination of two of polyoxyethylene alkylamine and bis(2-hydroxyethyl) oleylamine.

3. A detergent composition according to claim 1 or 2, characterized in that By mass percentage, the nonionic surfactant is 10 to 50%, and the alkylamine derivative is 5 to 30%; Preferably, by mass percentage, the nonionic surfactant is 20 to 45%, and the alkylamine derivative is 5 to 20%.

4. A detergent composition according to claim 3, characterized in that, The sum of the masses of the nonionic surfactant and the alkylamine derivative is greater than 30% of the total mass of the raw materials.

5. A detergent composition according to claim 3 or 4, characterized in that, The raw materials further include an auxiliary agent, an organic solvent and water; Preferably, by mass percentage, the auxiliary agent is 1 to 10%, the organic solvent is 0 to 5%, and the balance is water.

6. A detergent composition according to any one of claims 1-5, characterized in that, The nonionic surfactant is selected from one or a combination of multiple of alkyl alcohol alkoxylates, alkyl polyglycosides, fatty acid alkoxylates, fatty acid ethoxylates, fatty acid alkyl alcohol amides, and ethoxylated sorbitan fatty acid esters.

7. A detergent composition according to claim 5, wherein The auxiliary agent is selected from one or a combination of multiple of inorganic salts, enzyme preparations, alkali agents, viscosity regulators, pH stabilizers, preservatives, colorants, fluorescent whitening agents, color stabilizers and fragrances.

8. A detergent composition according to claim 5, characterized in that, The organic solvent is selected from one or a combination of multiple of ethanol, glycerol, propylene glycol, sorbitol, polyethylene glycol, diethylene glycol butyl ether, dipropylene glycol methyl ether, tripropylene glycol methyl ether, diethylene glycol butyl ether acetate, dipropylene glycol butyl ether and tripropylene glycol butyl ether.

9. A method for preparing a detergent composition, characterized in that, For preparing a detergent composition according to any one of claims 1-8, the method includes: First, add water to a preparation tank according to mass percentage, and then sequentially add a nonionic surfactant, an alkylamine derivative, an auxiliary agent and an organic solvent according to mass percentage and stir until completely dissolved. After post-treatment, a uniform detergent composition is obtained; Preferably, the post-treatment includes adding a pH regulator while stirring.

10. Use of a detergent composition, characterized in that, Apply a detergent composition according to any one of claims 1-8 in a washing device; Preferably, it is applied in a washing device with automatic dosing.

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