Automatic Dishwasher Liquid Detergent

Abstract

The present invention relates to the field of daily chemical products, and provides an automatic dishwasher liquid detergent. The liquid detergent contains a colored stain removal synergistic composition, and the colored stain removal synergistic composition includes an oxidase and an enzymatic synergist with a mass ratio of 10:1 - 1:1. By adding the colored stain removal synergistic composition to the liquid detergent, the present invention can effectively remove colored stains such as tea stains, coffee stains, and fruit stains under mild washing conditions, making up for the shortcoming that liquid detergent formulations are ineffective in cleaning such stains, and at the same time meeting the needs of consumers for clean and reassuring washing.

Description

Technical Field

[0001] The invention relates to the field of daily chemical products, in particular to a liquid detergent for automatic dishwashers. Background Art

[0002] The popularity of household dishwashers is increasing. Dishwashers can free consumers from the tedious and tedious task of washing dishes, save physical energy, and are easy to operate. They also have many advantages such as high cleaning power, water saving, disinfection and sterilization. Currently, the commercially available household dishwasher detergents are mainly divided into dishwashing powder, dishwashing liquid (gel), dishwashing blocks (tablets), and dishwashing beads.

[0003] Dishwashing powder is the earliest product, and consumers need to choose the amount to use based on the amount of dishes to be washed each time and the degree of dirt. The composition of dishwashing blocks is similar to that of dishwashing powder. The product is pressed into independent tablets and individually packaged in plastic bags or water-soluble films. Dishwashing gel beads are a relatively new product form, usually combining liquid and solid dosage forms in different cavities of a gel bead. Both dishwashing blocks and dishwashing gel beads are pre-measured single-dose products, which can be used one at a time, making them convenient to use. However, there is also a situation where the dishes are wasted when there are fewer and cleaner dishes. The above three types of products have good cleaning power, but because of the high alkalinity, they are more likely to damage the dishes. Consumers also encounter problems such as incomplete dissolution of detergent solids, and scale deposition on the surface of dishes and machines after multiple uses. Liquid dishwashing liquid (gel) is a relatively mild product, mainly with a weak alkaline or nearly neutral system. It dissolves quickly and is not easy to leave residue. However, compared with other dosage forms, its cleaning power is weaker. When some heavy dirt needs to be cleaned, dishwashing liquid often cannot clean it thoroughly, especially colored stains such as tea stains, coffee stains, and fruit stains are its weaknesses in cleaning.

[0004] Therefore, the present invention aims to develop a liquid detergent for dishwashers with excellent cleaning power, which can simultaneously meet consumers' needs for clean washing and safe washing. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems existing in the related art. To this end, the present invention provides a liquid detergent for an automatic dishwasher.

[0006] According to the liquid detergent for an automatic dishwasher according to an embodiment of the present invention, the liquid detergent comprises a colored stain removal synergistic composition, wherein the colored stain removal synergistic composition comprises an oxidase and an enzymatic synergist in a mass ratio of 10:1-1:1.

[0007] According to some embodiments of the present invention, the oxidase is selected from one or more of laccase, monophenol monooxidase, and catechol oxidase, preferably laccase.

[0008] According to some embodiments of the present invention, the enzyme enhancer is selected from one or more of acetosyringone, 2,2-azino-di(3-ethyl-benzothiazole-6-sulfonic acid), 1-hydroxybenzotriazole, purpuric acid, isopromazine hydrochloride, phenothiazine, 2-nitroso-1-naphthol-4-sulfonic acid, 4-hydroxybenzenesulfonic acid, 3,5-dimethoxybenzaldehyde, ascorbic acid, N-hydroxy-N-acetylanilide, 1-nitroso-2-naphthol-3,6-disulfonic acid, 10-(3-dimethylaminopropyl), sinapinic acid, caffeic acid, coumaric acid, and syringaldehyde.

[0009] According to some embodiments of the present invention, the mass percentage of the colored stain removal enhancing composition in the liquid detergent is 0.2-10%.

[0010] According to some embodiments of the present invention, the liquid detergent further comprises a chelating agent, wherein the chelating agent consists of methylglycine diacetic acid and hydroxyethylidene diphosphonic acid.

[0011] According to some embodiments of the present invention, the mass percentage of the chelating agent in the liquid detergent is 5-25%.

[0012] According to some embodiments of the present invention, the liquid detergent further contains, by mass percentage, 0.01-15% of an enzyme stabilizer, and the enzyme stabilizer is selected from: diols; polyols; amines; alkanolamines; compounds containing calcium ions, magnesium ions, sodium ions, potassium ions, tin ions, organic ammonium ions and combinations thereof; one or more of carboxylic acids or carboxylates having a fatty chain of 3-12 carbon atoms or an aromatic group.

[0013] According to some embodiments of the present invention, the liquid detergent further contains 0.01-10% of other biological enzyme preparations in terms of mass percentage, and the other biological enzyme preparations are selected from one or more of protease, amylase, cellulase, lipase, pectinase, and mannanase.

[0014] According to some embodiments of the present invention, the liquid detergent further contains 2-25% of a surfactant, calculated by mass percentage, and the surfactant is selected from one or more of fatty alcohol alkoxylates, isomeric tridecanol polyoxyethylene ethers, isomeric decanol polyoxyethylene ethers and EP / PO block copolymers.

[0015] According to some embodiments of the present invention, the liquid detergent further contains 0.1-20% of a polymer dispersant, measured in percentage by mass, wherein the polymer dispersant is selected from one or more of sulfonated polymers and polycarboxylate polymers, and has a molecular weight between 2000-80000.

[0016] According to some embodiments of the present invention, the liquid detergent further contains, by mass percentage, 0.1-50% of an alkaline auxiliary agent, and the alkaline auxiliary agent is selected from one or more of sodium hydroxide, potassium hydroxide, sodium metasilicate, sodium carbonate, potassium carbonate, sodium bicarbonate, potassium bicarbonate, sodium disilicate, triethanolamine, and monoethanolamine.

[0017] According to some embodiments of the present invention, the liquid detergent further contains one or more of corrosion inhibitors, rheology modifiers, pigments, color stabilizers, flavors, defoamers, antibacterial agents, and preservatives, with a total mass percentage of 0.1-5%, and the remainder being fillers.

[0018] According to some embodiments of the present invention, the liquid detergent is designed as a two-component, the oxidase and enzyme stabilizer belong to the first component, the chelating agent and the enzymatic enhancer belong to the second component, and the remaining raw material components belong to the first component and / or the second component.

[0019] The above one or more technical solutions in the embodiments of the present invention have at least one of the following technical effects:

[0020] The present invention adds a colored stain removal synergistic composition to a liquid detergent, thereby effectively removing colored stains such as tea stains, coffee stains, fruit stains, etc. under mild washing conditions, thereby making up for the shortcoming that liquid detergents are not effective in cleaning such stains.

[0021] Furthermore, the present invention has a higher cleaning power than conventional dishwashing liquid through a two-component design.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. DETAILED DESCRIPTION

[0023] The following examples are used to illustrate the present invention, but they are not intended to limit the scope of the present invention.

[0024] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0025] At present, for colored stains such as tea stains, coffee stains, and fruit stains, daily chemical products mainly add bleaching agents to the formula to achieve this. Bleaching agents mainly include chlorine-containing bleaching agents and oxygen-containing bleaching agents. Among them, chlorine-containing bleaching agents are strongly oxidizing, and commonly used ones include trisodium chlorinated phosphate and dichloroisocyanurate, etc., which can destroy pigments to achieve bleaching effects, but the storage stability of this system is poor, and it is very easy to destroy the activity of other components, such as oxidative degradation of non-ionic surfactants, especially enzyme preparations. Even if it is only released in the washing stage, it will greatly reduce the activity of the enzyme, and it is extremely corrosive, easy to corrode tableware and machines, and consumers are also prone to corroding their skin when using it. Oxygen-containing bleaching agents are relatively mild in nature, and commonly used hydrogen peroxide and persalts (such as sodium borate, sodium percarbonate, perphosphate, persulfate, etc.). Persalts are currently only used in solid dishwasher detergent products, and their stability is extremely poor, they are very sensitive to heat and humidity, and they decompose when exposed to water, and cannot be used in liquid products. Liquid hydrogen peroxide, also known as hydrogen peroxide, has poor thermodynamic stability, is easily decomposed, and has poor storage stability. It can usually only be used as a bleaching agent in conjunction with other cleaning products (such as stain bleaching liquid). In addition, it is quite inert in terms of kinetics, and requires a higher pH value and temperature than some typical dishwasher applications to exert its effect. In an era that advocates low-temperature and gentle washing, its application will also be limited in the future.

[0026] That is to say, due to their stability and compatibility with other active ingredients in the formula, chlorine bleach and oxygen bleach are basically only used in solid detergents, while liquid products, such as dishwashing liquid, basically do not contain bleach. Therefore, liquid detergents are weak in removing colored stains such as tea stains, coffee stains, and fruit stains. At the same time, in order to reduce the negative impact on the enzyme system, the alkaline system and chelating system used in dishwashing liquid are relatively weak, and its comprehensive cleaning effect is inferior to that of solid dosage products.

[0027] In view of the above problems, an embodiment of the present invention provides a liquid detergent for an automatic dishwasher, wherein the liquid detergent comprises a colored stain removal synergistic composition, wherein the colored stain removal synergistic composition comprises an oxidase and an enzymatic synergist in a mass ratio of 10:1-1:1.

[0028] The oxidase of the present invention oxidizes the substrate to produce hydrogen peroxide through catalysis, and then uses hydrogen peroxide as a bleaching agent to bleach colored stains. Therefore, this biological enzyme bleaching is not a direct bleaching effect of the biological enzyme, but can be regarded as indirect hydrogen peroxide bleaching, which has the characteristics of hydrogen peroxide bleaching, but is lower in temperature and milder than conventional hydrogen peroxide bleaching. Furthermore, the present invention compounds the oxidase with a specific proportion of an enzymatic enhancer, which can further improve the activity of the oxidase, so that it can efficiently destroy the color development structure of colored stains, thereby achieving the effect of enhancing the removal of colored stains such as tea stains, coffee stains, and fruit stains.

[0029] According to some embodiments of the present invention, the oxidase is selected from one or more of laccase, monophenol monooxidase, and catechol oxidase.

[0030] According to some embodiments of the present invention, the oxidase is laccase. Laccase is a polyphenol oxidase containing four copper ions, belonging to copper blue oxidase, and exists in the form of monomeric glycoprotein. Laccase exists in mushrooms, fungi and plants, and can also survive in the air. The only product after the reaction is water.

[0031] The enzyme synergist of the present invention can also be called an intermediary, which is mainly used to improve the catalytic activity of oxidase and improve its oxidation efficiency for colored stains. They are oxidized in the reaction, and then the oxidized intermediary oxidizes the original colored substrate and is reduced itself, because the intermediary is easy to oxidize, and the oxidized intermediary has a higher oxidation ability, thereby achieving a promoting effect. The enzyme synergist can be a compound containing an oxime group (-NOH) or a nitroso group (-N=O), 1-hydroxybenzotriazole (HOBT) and violaceum (VLA), a compound with -NH on the benzene ring 2 、-OCH 3 One or more natural extracts of strong electron-pushing groups.

[0032] According to some embodiments of the present invention, the enzyme enhancer is selected from one or more of acetosyringone, 2,2-azino-di(3-ethyl-benzothiazole-6-sulfonic acid), 1-hydroxybenzotriazole, purpuric acid, isopromazine hydrochloride, phenothiazine, 2-nitroso-1-naphthol-4-sulfonic acid, 4-hydroxybenzenesulfonic acid, 3,5-dimethoxybenzaldehyde, ascorbic acid, N-hydroxy-N-acetylanilide, 1-nitroso-2-naphthol-3,6-disulfonic acid, 10-(3-dimethylaminopropyl), sinapinic acid, caffeic acid, coumaric acid, and syringaldehyde.

[0033] According to some embodiments of the present invention, the mass percentage of the colored stain removal enhancing composition in the liquid detergent is 0.2-10%. The mass percentage of the oxidase in the liquid detergent is preferably 0.2-2%. If the mass percentage is lower than 0.2%, the stain removal power on colored stains is poor, and if the mass percentage is higher than 2%, the performance cannot be further improved, but the cost is increased.

[0034] According to some embodiments of the present invention, the liquid detergent further comprises a chelating agent, wherein the chelating agent consists of methylglycine diacetic acid and hydroxyethylidene diphosphonic acid.

[0035] According to some embodiments of the present invention, the mass percentage of the chelating agent in the liquid detergent is 5-25%.

[0036] In the prior art, there are many conventional choices of chelating agents, such as citric acid, hydroxyethylethylenediaminetriacetic acid, ethylenediaminetetraacetic acid, iminodisuccinic acid, methylglycine diacetic acid, aspartic acid diacetic acid, glutamic acid diacetic acid, hydroxyethylidene diphosphonic acid and its salts, etc. However, the present invention has found that the use of methylglycine diacetic acid and hydroxyethylidene diphosphonic acid as chelating agents can effectively strip calcium and magnesium ions that act as adhesives between dirt layers, making the dirt structure loose and easy to remove. Further, the amount of the chelating agent is better in the range of 5-25%, and the effect is poor when it is less than 5% or higher than 25%. Among them, methylglycine diacetic acid and hydroxyethylidene diphosphonic acid can be combined in any ratio. In some embodiments of the present invention, the mass ratio of methylglycine diacetic acid and hydroxyethylidene diphosphonic acid is 12:1-1:12.

[0037] According to some embodiments of the present invention, the liquid detergent further contains 0.01-15% of an enzyme stabilizer, measured by mass percentage, and the enzyme stabilizer is selected from: diols; polyols; amines; alkanolamines; compounds containing calcium ions, magnesium ions, sodium ions, potassium ions, tin ions, organic ammonium ions, and combinations thereof; and one or more of carboxylic acids or carboxylates having a fatty chain of 12 carbon atoms or less or an aromatic group. The enzyme stabilizer can effectively improve the long-term stability of the oxidase.

[0038] In some embodiments of the present invention, in the liquid detergent, the oxidase is laccase, the enzyme stabilizer is propylene glycol and a compound containing calcium ions, the chelating agent is methylglycine diacetic acid and hydroxyethylidene diphosphonic acid, and the enzyme synergistic ingredient is acetosyringone. Under the above combination, the effect of removing colored stains is better.

[0039] According to some embodiments of the present invention, the liquid detergent further contains 0.01-10% of other biological enzyme preparations, measured by mass percentage, and the other biological enzyme preparations are selected from one or more of protease, amylase, cellulase, lipase, pectinase, and mannanase. When there are multiple combinations, the multiple other biological enzyme preparations can be in any ratio.

[0040] According to some embodiments of the present invention, the liquid detergent further contains 2-25% of a surfactant, calculated by mass percentage, and the surfactant is selected from one or more of fatty alcohol alkoxylates, isomeric tridecanol polyoxyethylene ethers, isomeric decanol polyoxyethylene ethers and EP / PO block copolymers.

[0041] According to some embodiments of the present invention, the liquid detergent further contains, by mass percentage, 0.1-50% of an alkaline auxiliary agent, and the alkaline auxiliary agent is selected from one or more of sodium hydroxide, potassium hydroxide, sodium metasilicate, sodium carbonate, potassium carbonate, sodium bicarbonate, potassium bicarbonate, sodium disilicate, triethanolamine, and monoethanolamine.

[0042] Furthermore, in some embodiments of the present invention, the alkaline auxiliary agent is one or more of sodium carbonate and triethanolamine, and the amount of the alkaline auxiliary agent is 5-20%.

[0043] According to some embodiments of the present invention, the liquid detergent further contains 0.1-20% of a polymer dispersant, measured in percentage by mass, wherein the polymer dispersant is selected from one or more of sulfonated polymers and polycarboxylate polymers, and has a molecular weight between 2000-80000.

[0044] According to some embodiments of the present invention, the liquid detergent further contains one or more of corrosion inhibitors, rheology modifiers, pigments, color stabilizers, flavors, defoamers, antibacterial agents, and preservatives, and the total mass percentage in the liquid detergent is 0.1-5%.

[0045] The balance in the liquid detergent of the present invention is filler, which can be one or more of water, diols and polyols.

[0046] According to some embodiments of the present invention, the liquid detergent is designed as a two-component, the oxidase and enzyme stabilizer belong to the first component, the chelating agent and the enzyme synergist belong to the second component, and the remaining raw material components belong to the first component and / or the second component. That is, "oxidase and enzyme stabilizer" and "chelating agent and enzyme synergist" belong to two different components, and the remaining raw materials are arbitrary.

[0047] The present invention adopts a dual-component design, that is, the two components are stored separately in two containers, and at the beginning of washing, they are put into the dishwasher simultaneously or successively for use. Compared with conventional dishwashing liquid products, the present invention has better comprehensive cleaning performance and can effectively remove heavy dirt.

[0048] The liquid detergent for automatic dishwashers of the present invention makes up for the shortcoming of existing liquid detergents in removing colored stains. By adding a colored stain removal enhancing composition, the synergistic effect of each component can play a role in the synergistic removal of colored stains such as tea stains, coffee stains, and fruit stains. Among them, the colored stain removal enhancing composition introduces biological enzyme oxygen bleaching technology, which can take effect at a lower temperature than conventional oxygen bleaching and chlorine bleaching technologies, and acts on colored stains instead of the surface of tableware, and is gentle and does not damage the tableware.

[0049] The method of using the dishwasher detergent of the present invention is well known to those skilled in the art. A typical method of use is to contact the specific detergent with the surface of the washed object in an undiluted manner, and then rinse the surface of the washed object. Preferably, the washed object undergoes a washing step between the above-mentioned contact step and the rinsing step. The washing step includes but is not limited to scrubbing and mechanical stirring. The concentration of the detergent in water is about 500ppm to 10000ppm, and the water temperature is preferably 5°C to about 60°C. The ratio of water to washed objects is preferably about 1:1 to about 20:1. Of course, the detergent of the present invention can also be used according to the description of detergent addition in the specific operating instructions of the dishwasher.

[0050] Specific embodiments will be described below.

[0051] In the following examples, the protease and amylase complex enzyme preparations used were provided by Novozymes;

[0052] The molecular weight of maleic acid acrylic acid copolymer is 4000;

[0053] The mass ratio of sodium carbonate to triethanolamine is 1:1;

[0054] Fragrances, pigments and preservatives are commonly used agents in this field.

[0055] In the following examples, the cleaning power test and evaluation method for colored stains is as follows:

[0056] GB "Dishwasher Energy Efficiency and Water Efficiency Limits and Grades" is implemented. The dishwasher model is RX600, 13 sets of tableware are loaded, including 6 tea cups (in a single test, the contaminants are coffee stains or black tea stains), and the amount of liquid detergent is 31.25g. Test procedure: (ECO energy-saving washing). After washing, score each tea cup from 0 to 5 points and take the average value. The degree represented by 0 to 5 points is shown in the following table.

[0057] Table 1

[0058]

[0059] Examples 1-4

[0060] Examples 1-4 and Comparative Examples 1-2 respectively provide a dishwasher detergent, and the formulation composition thereof is shown in Table 2 (weight percentage, unit %). Among them, the oxidase and enzyme stabilizer belong to the first component, and the remaining raw materials belong to the second component.

[0061] Table 2

[0062]

[0063] The cleaning performance of the dishwasher detergents obtained in the above groups on colored stains was tested, and the results are shown in the following table.

[0064] Table 3

[0065] Components Example 1 Example 2 Example 3 Example 4 Comparative Example 1 Comparative Example 2 Coffee Stains 2.9 3.2 3.2 5 0 5 Black Tea Stains 3.1 3.5 4 5 1 5

[0066] From the above results, it can be seen that when the ratio of oxidase to enzymatic enhancer is 10:1-1:1, the cleaning ability for colored stains is the best. When it is lower than 10:1, the cleaning ability for colored stains is significantly poor, and when it is higher than 1:1, the cleaning ability cannot be further improved.

[0067] Example 5-12

[0068] Examples 5-12 provide a dishwasher detergent, respectively, and the formulation composition thereof is shown in Table 4 (the table is weight percentage, unit %). Among them, the oxidase and enzyme stabilizer belong to the first component, and the remaining raw materials belong to the second component.

[0069] Table 4

[0070]

[0071] The dishwasher detergents obtained in the above groups were tested for their cleaning power on colored stains. The results are shown in the following table.

[0072] Table 5

[0073]

[0074]

[0075] By comparing Examples 1-4 and Examples 5-6, it can be seen that the preferred range of oxidase is 0.2-2%. Below 0.2%, the cleaning power for colored stains is poor. 2% oxidase can already clean colored stains, and increasing the amount further will not further improve the performance, but will increase the cost.

[0076] By comparing Examples 1-4 and Examples 7-9, it can be seen that the combination of methylglycine diacetic acid and hydroxyethylidene diphosphonic acid has the best effect when used as a chelating agent.

[0077] By comparing Examples 1-4 and Examples 10-12, it can be seen that when the dosage of the chelating agent is 5-25%, the removal effect on colored stains is good, and when the dosage is less than or greater than this range, the effect is poor.

[0078] In addition, the dishwasher detergents of Examples 1-12 were tested for their cleaning power on standard stains.

[0079] Evaluation method: Implementation of GB 38383-2019 "Limited Values ​​and Grades of Energy and Water Efficiency of Dishwashers", dishwasher model: Miele-G1222SC standard dishwasher, liquid detergent dosage: 25g. Test procedure: EN / IEC, loading capacity: 12 sets. The test results are shown in the following table.

[0080] Table 6

[0081]

[0082] The results show that the products obtained in the examples have good cleaning power on a variety of different standard tableware. In summary, the present invention further improves the cleaning power of colored stains while ensuring the cleaning power of conventional stains, and can effectively remove colored stains such as tea stains, coffee stains, and fruit stains under mild washing conditions, making up for the shortcoming of liquid detergents in cleaning such stains.

[0083] Finally, it should be noted that the above embodiments are only used to illustrate the present invention, rather than to limit the present invention. Although the present invention is described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications or equivalent substitutions of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention, and should be included in the scope of the claims of the present invention.

Claims

1. An automatic dishwasher liquid detergent, characterized in that, the liquid detergent contains a colored stain removal synergistic composition, and the colored stain removal synergistic composition comprises an oxidase and an enzyme-promoting synergist with a mass ratio of 10:1 - 4:1; the liquid detergent further contains a chelating agent, and the chelating agent is composed of methylglycine diacetic acid and hydroxyethylidene diphosphonic acid; the mass percentage content of the chelating agent in the liquid detergent is 5 - 25%; the mass percentage content of the colored stain removal synergistic composition in the liquid detergent is 2.5 - 10%; the oxidase is selected from one or more of laccase, monophenol monooxygenase, and catechol oxidase; the enzyme-promoting synergist is selected from one or more of acetosyringone, 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid), 1-hydroxybenzotriazole, purpuric acid, promethazine hydrochloride, phenothiazine, 2-nitroso-1-naphthol-4-sulfonic acid, 4-hydroxybenzenesulfonic acid, 3,5-dimethoxybenzaldehyde, ascorbic acid, N-hydroxy-N-acetylaniline, 1-nitroso-2-naphthol-3,6-disulfonic acid, 10-(3-dimethylaminopropyl), sinapic acid, caffeic acid, coumaric acid, and syringaldehyde.

2. The automatic dishwasher liquid detergent according to claim 1, characterized in that, by mass percentage, the liquid detergent further contains 0.01 - 15% of an enzyme stabilizer.

3. The automatic dishwasher liquid detergent according to claim 2, characterized in that, by mass percentage, the liquid detergent further contains 0.01 - 10% of other bioenzyme preparations, and the other bioenzyme preparations are selected from one or more of protease, amylase, cellulase, lipase, pectinase, and mannanase.

4. The automatic dishwasher liquid detergent according to claim 3, characterized in that, by mass percentage, the liquid detergent further contains 2 - 25% of a surfactant; by mass percentage, the liquid detergent further contains 0.1 - 20% of a polymer dispersant, and the polymer dispersant is selected from one or more of sulfonated polymers and polycarboxylate polymers, and its molecular weight is between 2000 and 80000; by mass percentage, the liquid detergent further contains 0.1 - 50% of an alkaline auxiliary agent, and the alkaline auxiliary agent is selected from one or more of sodium hydroxide, potassium hydroxide, sodium metasilicate, sodium carbonate, potassium carbonate, sodium bicarbonate, potassium bicarbonate, disodium silicate, triethanolamine, and monoethanolamine.

5. The automatic dishwasher liquid detergent according to claim 4, characterized in that, the liquid detergent further contains one or more of a corrosion inhibitor, a rheology modifier, a pigment, a color stabilizer, a fragrance, an antifoaming agent, an antibacterial agent, and a preservative, and the total mass percentage is 0.1 - 5%, and the balance is water.

6. The automatic dishwasher liquid detergent according to claim 5, characterized in that, the liquid detergent is of a two-component design, the oxidase and the enzyme stabilizer belong to the first component, the chelating agent and the enzyme-promoting synergist belong to the second component, and the remaining raw material components belong to the first component and / or the second component.

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