Powder-liquid type dishwashing condensate beads and preparation method thereof

Abstract

The present application relates to a kind of powder liquid type dishwashing condensation beads and its preparation method, the powder liquid type dishwashing condensation beads include: powder: basic salt, percarbonate, acrylic polymer, surfactant, washing aid;Concentrated solution: synergist, chelating agent, hexanediol, water balance;Wherein, the acrylic polymer is selected from one or more of acrylic acid homopolymer or acrylic acid / sulfonic acid copolymer;The synergist is maleic acid diisooctyl sulfonate sodium;The chelating agent is amino acid derivative chelating agent.The present application is obtained by the component of different form of powder, concentrated solution and is compounded to get condensation bead, the basic salt in the powder cavity of the present application, percarbonate and synergist in liquid cavity can improve the tension of surfactant in powder cavity, to produce synergistic effect, improve the penetration and wetting area of surfactant on the surface of tableware, reach the effect of strong and efficient stripping and removing stain.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tableware washing care, in particular to a powder-liquid type dishwashing condensation bead and a preparation method thereof. BACKGROUND

[0002] With the change of the times, the post-90s and post-00s population gradually become the main consumer group, they pursue a relaxed life, and the current consumers pay unprecedented attention to the cleaning and disinfection of daily necessities. Therefore, the unique disinfection and sterilization function of dishwashers and their detergents provides strong support for the rapid development of the dishwasher market. In addition, with the continuous improvement of housing conditions, the area of household kitchen is gradually expanding, and more and more consumers choose to install dishwashers, and the demand for supporting washing products is also gradually increasing.

[0003] Automatic dishwashing products have also developed from dishwashing powder to dishwashing block, and then to the current new form of dishwashing condensation bead. Dishwashing powder has many defects, first, it is difficult to control the usage amount, and second, the washing effect of the powder is limited. In order to improve this situation, manufacturers have improved dishwashing powder by making powder into block for quantitative treatment. Moreover, dishwashing powder lacks drying, scale removal, and brightening effects, and needs to be used with dishwashing machine special drying agents, brightening agents, and softening salts on the market at the same time, which not only increases the cost of use, but also complicates the use process and is inconvenient. In addition, due to the strong alkalinity of the automatic dishwashing powder product, the functions of many drying agents and high-efficiency wetting agents are difficult to play, and the washing effect is poor.

[0004] Therefore, the current automatic dishwashing detergent product has been difficult to meet the requirements of the market and consumers for product performance, and it is necessary to improve and enhance the performance of the new dishwashing condensation bead to realize the multi-effect combination of stain removal, drying, brightening, and scale removal.

[0005] In view of the above, it is necessary to develop a new technical scheme to solve the problems in the prior art. SUMMARY

[0006] Based on this, the present application provides a powder-liquid type dishwashing condensation bead and a preparation method thereof. The condensation bead is obtained by compounding components in different forms of powder and concentrated liquid, wherein the powder includes salt, acrylic multifunctional polymer, surfactant and other components, the concentrated liquid includes synergist, chelating agent, solvent and other components, and the powder-liquid compounding maximizes the cleaning functions of rapid drying, brightening, and scale removal. In addition, the alkaline salt and percarbonate in the powder cavity and the synergist in the liquid cavity can improve the tension of the surfactant in the powder cavity, thereby producing a synergistic effect, improving the penetration and wetting area of the surfactant on the tableware surface, and achieving the effect of strong and efficient stain removal.

[0007] One object of the present application is to provide a powder-liquid type dishwashing condensate bead, which comprises a powder cavity and a liquid cavity; the powder cavity comprises a powder, and the liquid cavity comprises a concentrated liquid; the mass ratio of the powder to the concentrated liquid is (1-3):1.

[0008] The powder comprises the following components in mass fraction:

[0009]

[0010] The concentrated liquid comprises the following components in mass fraction:

[0011]

[0012] Among them,

[0013] The synergist is sodium maleate diisooctyl sulfonate;

[0014] The structural formula of the sodium maleate diisooctyl sulfonate is:

[0015]

[0016] The sodium maleate diisooctyl sulfonate has strong accommodation for Mg 2+ , Ca 2+ ions in hard water, so that Mg 2 + , Ca 2+ is not easy to deposit; on the other hand, it can enhance the spreading and penetration effect, thereby producing a synergistic effect with the surfactant, further reducing the interfacial tension, and achieving stronger decontamination effect.

[0017] The chelating agent is an amino acid derivative chelating agent.

[0018] Further, the amino acid derivative chelating agent is selected from one or more of methyl glycine diacetic acid, glutamic acid diacetic acid, N,N-dicarboxylic acid amino-2-hydroxy propane sulfonic acid, 3-hydroxy-2,2'-iminodiacetic acid disuccinic acid and alkali metal salts or ammonium salts thereof.

[0019] Further, the structural formula of the chelating agent is:

[0020]

[0021] The R is selected from H, Na, K.

[0022] Further, the structural formula of the hexanediol is:

[0023]

[0024] Further, the percarbonate salt is a coated percarbonate salt.

[0025] The coated percarbonate salt is selected from one or more of coated sodium percarbonate, coated potassium percarbonate or coated calcium percarbonate.

[0026] Preferably, the coated percarbonate salt is coated sodium percarbonate.

[0027] The coated percarbonate salt can quickly release active oxygen when it meets water, and the active oxygen can break the chemical bond between the organic stains and the tableware, so that the stains are oxidized and decomposed into small molecules that are soluble in water, achieving the effect of easier cleaning; on the other hand, the coated percarbonate salt has corrosion inhibition effect when it contacts with the water-soluble film, thereby enhancing the stability during the storage process of the dishwashing condensation beads.

[0028] Further, the alkaline salt is selected from one or more of silicate, sulfate, bicarbonate, carbonate, citrate.

[0029] Further, the acrylic polymer is selected from one or more of acrylic homopolymer or acrylic / sulfonic acid copolymer.

[0030] The molecular weight of the acrylic polymer is 500-20000.

[0031] Further, the surfactant is selected from one or more of EO / PO block polyether surfactant, isooctanol phosphate derivative surfactant, ethoxylated fatty acid methyl ester derivative surfactant, polyether modified silicone surfactant.

[0032] Further, the washing aid is selected from one or more of enzyme preparation, defoaming agent, percarbonate activator, essence, pigment.

[0033] Further, the enzyme preparation is selected from one or more of protease, alpha-amylase, cellulase, hemicellulase, phospholipase, esterase, lipase, peroxidase / oxidase, pectinase, lyase, mannanase, cutinase, reductase, xylanase, debranching enzyme, tannase, pentosanase, maltamylase, arabinase, beta-glucanase.

[0034] Another object of the present application is to provide a preparation method of the above-mentioned powder-liquid type dishwashing condensation beads, and the preparation method of the powder-liquid type dishwashing condensation beads comprises the following steps:

[0035] S1. Mixing the alkaline salt, percarbonate salt, acrylic polymer, surfactant and washing aid to obtain a powder;

[0036] S2. Mixing the synergist, hexanediol, chelating agent and water to obtain a concentrated solution;

[0037] S3. The powder and the concentrated liquid are wrapped with a water-soluble film to form a powder cavity and a liquid cavity, so as to obtain the powder-liquid type dishwashing condensate beads.

[0038] Further, in step S1, the surfactant is added to the powder in the form of spraying.

[0039] Further, in step S2, the synergist is first dissolved by using hexanediol, and then mixed with the chelating agent and water.

[0040] The present application has the following beneficial effects:

[0041] 1. The powder-liquid type dishwashing condensate beads are prepared by using percarbonate, alkaline salt, synergist, chelating agent, surfactant and other components. In the use process, after the outer film is dissolved, the percarbonate can quickly release active oxygen when meeting water, so as to promote the alkaline salt and surfactant to play the effect of strong stain removal and large-area stain stripping. At the same time, the chelating agent in the liquid cavity greatly improves the stability of the percarbonate, can effectively regulate the release speed of active oxygen, and the synergistic effect of multiple components gives the product a persistent active oxygen washing capacity.

[0042] 2. The liquid cavity of the powder-liquid type dishwashing condensate beads uses hexanediol as a solvent, which can stabilize the synergist and chelating agent in a strong alkaline system and avoid the separation phenomenon. The present application also uses maleic acid diisooctyl ester sodium sulfonate as a synergist, which has a good synergistic effect when compounded with the surfactant, can enhance the penetration and wetting effect, further reduce the interfacial tension, and achieve a stronger effect of removing aged and stubborn stains. In the washing process, the synergist can increase the adhesion and contact time of the acrylic multifunctional polymer with tableware, increase the spreading area of the washing components, thereby inhibiting the redeposition of dirt and further improving the brightness and rapid drying effect. In addition, the synergist combined with the amino acid derivative chelating agent can chelate Mg 2+ , Ca 2+ ions in hard water to a greater extent, so that the scale residue on tableware is significantly reduced. DETAILED DESCRIPTION

[0043] In order to more clearly illustrate the technical solutions of the present application, the following examples are listed. The raw materials, reactions and post-treatment methods appearing in the examples are all common raw materials on the market and technical means well known to those skilled in the art, unless otherwise stated.

[0044] The words "preferred" and "preferably" in the application refer to embodiments of the application that can provide certain benefits under certain circumstances. However, other embodiments can also be preferred under the same or other circumstances. Additionally, the recitation of one or more preferred embodiments does not imply that other embodiments are not useful, and is not intended to exclude those other embodiments from the scope of the application.

[0045] It should be understood that, except where noted otherwise, or otherwise evident from context, expressions of amount or all numbers in the specification and claims, such as, for example, amounts of ingredients in the specification and claims, are intended to be understood as being modified by the term "about". Thus, unless otherwise indicated, the numerical parameters set forth in the following specification and attached claims are approximations.

[0046] The synergist in the embodiment of the application is sodium maleate diisooctyl sulfonate, which is purchased from Guangzhou Fangzhong Chemical Co., Ltd., and the trade name is FTRT OT-75, and the structural formula is as follows:

[0047]

[0048] The chelating agent in the embodiment of the application is purchased from Shandong Yuanlian Chemical Co., Ltd., and the trade name is IDS-Na4, and the structural formula is as follows:

[0049]

[0050] Wherein, R is Na.

[0051] The hexanediol in the embodiment of the application is purchased from Solvay.

[0052] The low-foaming surfactant in the embodiment of the application is an EO / PO block polyether, which is purchased from Noligen Chemical Co., Ltd., and the trade name is ETHYLAN CPG7545.

[0053] The acrylic polymer in the embodiment of the application includes acrylic acid homopolymer and acrylic acid / sulfonic acid copolymer, wherein the acrylic acid homopolymer is Dow ACUSOL 445NG, and the molecular weight is 4500; the acrylic acid / sulfonic acid copolymer is Dow ACUSOL588G, and the molecular weight is 11000.

[0054] The coated sodium percarbonate in the embodiment of the application is purchased from Jinke Rihua, and the trade name is SPCC.

[0055] The percarbonate activator in the embodiment of the application is tetraacetylethylenediamine, which is purchased from Jinke Rihua, and the trade name is TAED.

[0056] The defoaming agent in the embodiment of the application is DowSIL GP-4503.

[0057] The enzyme preparation in the embodiments of the present application is purchased from Novozymes Enzyme Preparation Co., Ltd., the amylase is Stainzyme Plus Evity 24T, and the protease is BLAZE EVITY 100T.

[0058] The propylene glycol in the comparative examples of the present application is purchased from Nanjing Heta Chemical Co., Ltd.

[0059] The chelating agent EDTA-4Na in the comparative examples of the present application is purchased from Nuolong Chemical Co., Ltd.

[0060] The synergist in the comparative examples of the present application is purchased from SACHEM Co., Ltd., and the brand is MARLOX RAEV39.

[0061] The components and corresponding mass fractions in the powder-liquid type dishwashing condensation beads of Examples 1-3 are shown in Table 1.

[0062] Table 1: Components and mass fractions in Examples 1-3

[0063]

[0064]

[0065] The preparation method of the powder-liquid type dishwashing condensation beads of Examples 1-3 includes the following steps:

[0066] S1. According to the above mass fractions, sodium carbonate, anhydrous sodium sulfate, anhydrous sodium citrate, low-foaming surfactant, ACUSOL 588G, ACUSOL 445NG, coated sodium percarbonate, tetraacetyl ethylenediamine, defoaming agent, protease, and amylase are mixed and stirred uniformly to obtain a powder, wherein the low-foaming surfactant is added in a spraying manner;

[0067] S2. According to the above mass fractions, sodium diisooctyl maleate sulfonate is added to hexanediol, stirred and dissolved, and then mixed with a chelating agent and water to obtain a concentrated solution;

[0068] S3. The powder and the concentrated solution with a mass ratio of 3:1 are wrapped with a PVA film to form a powder cavity and a liquid cavity, thereby obtaining a powder-liquid type dishwashing condensation bead.

[0069] Based on Example 1, Comparative Examples 1-3 are set up. The components and corresponding mass fractions in the powder-liquid type dishwashing condensation beads of Comparative Examples 1-3 are shown in Table 2.

[0070] Table 2: Components and mass fractions in Comparative Examples 1-3

[0071]

[0072]

[0073] Comparative Examples 1-3 differ from Example 1 in that Comparative Example 1 replaces sodium diisooctyl maleate sulfonate and hexanediol with equal mass of propylene glycol; Comparative Example 2 replaces the chelating agent with equal mass of EDTA-4Na, while replacing hexanediol with equal mass of propylene glycol; Comparative Example 3 replaces sodium diisooctyl maleate sulfonate with equal mass of the drying-enhancing penetrant MARLOX RAE V39, and the other ingredients and preparation method are the same as in Example 1.

[0074] Test Example 1

[0075] The powder-liquid type dishwashing condensation beads prepared in Example 1 and Comparative Examples 1-3 were subjected to stability tests.

[0076] Test Method:

[0077] High-temperature stability: The powder-liquid type dishwashing condensation beads prepared in Example 1 and Comparative Examples 1-3 were respectively bottled and sealed, then placed in a 45°C environment, and after constant temperature for 1 month, the appearance was observed after returning to room temperature 25°C. The evaluation criteria are: the appearance of the condensation beads has no significant change, the powder cavity has no discoloration, caking, the liquid cavity has no leakage, stringing, delamination, turbidity, gel or precipitate, and the wrapped water-soluble film has no damage, which is qualified for high-temperature stability.

[0078] Low-temperature stability: The powder-liquid type dishwashing condensation beads prepared in Example 1 and Comparative Examples 1-3 were respectively bottled and sealed, then placed in a 0°C environment, and after constant temperature for 1 month, the appearance was observed immediately after taking out. The evaluation criteria are: the appearance of the condensation beads has no significant change, the powder cavity has no caking, the liquid cavity has no leakage, stringing, delamination, turbidity, gel or precipitate, and the wrapped water-soluble film has no damage, which is qualified for low-temperature stability.

[0079] Room temperature stability: The powder-liquid type dishwashing condensation beads prepared in Example 1 and Comparative Examples 1-3 were respectively bottled and sealed, then placed in a room temperature environment (25°C), and after 1 month, the appearance was observed. The evaluation criteria are: the powder cavity has no discoloration, caking, the liquid cavity has no leakage, stringing, delamination, turbidity, gel or precipitate, and the wrapped water-soluble film has no damage, which is qualified for room temperature stability.

[0080] The test results are shown in Table 3.

[0081] Table 3 Stability test results

[0082]

[0083] From Table 3, it can be concluded that the powder-liquid type dishwashing condensation beads of Example 1 can ensure the stability of the sample under various test environments. The stability of the laundry condensation beads of Comparative Examples 1-3 is poor, and we speculate that this is because: in Comparative Example 1, propylene glycol is used instead of sodium maleate diisooctyl sulfonate and hexanediol in the liquid cavity. Since propylene glycol has low viscosity and strong diffusion capacity, it can easily penetrate outside the water-soluble film in the liquid cavity, resulting in liquid leakage and seepage of the liquid material, which pollutes the powder; in Comparative Example 2, the effect of propylene glycol combined with sodium maleate diisooctyl sulfonate is not good, which causes the sodium salt to easily combine with the water-soluble film and adhere to the surface of the water-soluble film, and the chelating agent and sodium maleate diisooctyl sulfonate compete for the solvent, resulting in turbidity; in Comparative Example 3, the quick-drying synergist MARLOX RAEV39 is affected by the electrolyte content in the chelating agent, and has poor compatibility with the solvent, resulting in stratification.

[0084] Test Example 2

[0085] The decontamination performance of the powder-liquid type dishwashing condensation beads prepared in Example 1 and Comparative Examples 1-3 was tested.

[0086] Test method:

[0087] (1) Artificial dirt was prepared, which included the following components in mass fraction:

[0088]

[0089] Among them, the mixed oil was prepared by placing lard, beef tallow and vegetable oil in a beaker in a mass ratio of 1:1:2, heating to melt, and stirring uniformly for standby use;

[0090] According to the above mass fraction, fresh eggs were shelled and placed in a beaker, stirred uniformly for standby use; then the waxy rice powder and whole milk powder were mixed uniformly; the mixed oil was placed in a beaker and heated to 50-60°C to melt; then the uniformly mixed waxy rice powder and whole milk powder were transferred into the beaker containing the mixed oil in batches and stirred uniformly; then the egg liquid, tomato sauce and mustard were added in turn and stirred uniformly; finally, distilled water was added to the beaker in batches and stirred to form a fine artificial dirt.

[0091] (2) Preparation before staining: first, the same size of dishes and glasses were washed in a dishwasher with 1% citric acid solution, then washed with a commercially available conventional detergent, and then rinsed with distilled water until there was no water mark on the dishes, and then washed until no water droplets were left, and then placed in a drying oven for drying. After cooling, it was ready for use.

[0092] (3) Artificial dirt staining: the artificial dirt was evenly coated on the center surface of the dishes by dipping a pig brown paintbrush with artificial dirt, 4g per dish, and then placed in a constant temperature drying oven at 115±1°C for 1h after staining. After cooling, it was ready for use.

[0093] The glass cup is not subjected to the coating treatment.

[0094] (4) Washing test:

[0095] The powder-liquid type dishwashing condensation beads prepared by using Examples 1-3 and Comparative Examples 1-3, respectively, are used to wash the soiled dinner plate, and the washing instrument is Panasonic dishwashing machine NP-K8RWH3R; the washing mode is standard (1 h); the washing water is tap water; and the washing times is 1 time.

[0096] The powder-liquid type dishwashing condensation beads prepared by using Examples 1-3 and Comparative Examples 1-3, respectively, are used to wash the glass cup, and the washing instrument is Panasonic dishwashing machine NP-K8RWH3R; the washing mode is fast washing mode (26 min); the washing water is tap water; and the washing times is 5 times.

[0097] (5) Results and evaluation:

[0098] After washing, the dinner plate is uniformly soaked with iodine solution, and after color development, it is washed once with tap water, and then it is left to stand until all the dinner plates are colored, and visual scoring comparison is performed;

[0099] The bottom of the washed glass cup is irradiated with a flashlight to observe the scale deposition, and visual scoring comparison is performed;

[0100] The score is 0-10, with 10 being the best, decreasing downwards, and 0 being the worst; 10 people score, and the final result of each sample is taken as the average value.

[0101] The test results are shown in Table 4.

[0102] Table 4: Detergency test results

[0103] Project Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 Dishpan soil removal score 8.5 9.1 9.3 5 5.4 7.3 Glassware soil removal score 9 8.9 9.1 3.4 3.5 7

[0104] According to Table 4, the ability of Examples 1-3 to remove dirt from tableware and glass cup scale is significantly better than that of Comparative Examples 1-3. On the one hand, by dissolving sodium maleate diisooctyl sulfonate with hexanediol, the surface activity of the surfactant is improved, the deep penetration is enhanced, and the spreading area of the washing ingredients such as acrylic multifunctional polymer is promoted, so as to remove the aged stubborn stains on the dinner plate; on the other hand, sodium maleate diisooctyl sulfonate is compounded with chelating agent to chelate Ca 2+ , Mg 2+ ions in hard water to a greater extent, effectively preventing scale from depositing on the surface of the glass cup during washing, and increasing the brightness of the tableware.

[0105] Test Example 3

[0106] The powder-liquid type dishwashing condensation beads prepared by using Examples 1 and Comparative Examples 1-3 are subjected to the drying performance test.

[0107] Test method:

[0108] The powder-liquid type dishwashing condensation beads prepared by Example 1 and Comparative Examples 1-3 were used to wash the same size dinner plates, respectively, and the washing instrument was Panasonic dishwashing machine NP-K8RWH3R; the washing mode was fast washing mode (26 min); the washing water was tap water; and the washing times were 5 times.

[0109] After one shift of the dishwashing machine ended, the test dinner plates were immediately taken out, timing was started, and the drying time until complete drying was recorded. Each group of example or comparative example samples was tested for 5 shifts, and the drying time of each shift was recorded, and the average value was taken.

[0110] The test results are shown in Table 5.

[0111] Table 5: Drying performance test results

[0112] Project Example 1 Comparative Example 1 Comparative Example 2 Comparative Example 3 Dry time (s) 90 170 102 115

[0113] According to Table 5, it can be concluded that the powder-liquid type dishwashing condensation beads prepared by Example 1 have good drying effect, which is obviously better than Comparative Example 1, because the synergist and the surfactant have good spreading and wetting performance, can quickly wet the surface of the tableware, and the synergist can prolong the action time of the acrylic multifunctional polymer in the machine washing process, thus promoting the formation of a uniform thin water film on the surface of the tableware, accelerating the drying speed of the tableware, and preventing the tableware surface from leaving film and stripes. It can be seen that the powder-liquid type dishwashing condensation beads of the present application can achieve rapid drying effect without additional addition of anionic hydrotrope.

[0114] It is apparent to those skilled in the art that the present application is not limited to the details of the foregoing exemplary embodiments, and that the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all respects as illustrative and not restrictive, and the scope of the present application is defined by the appended claims rather than the foregoing description, and it is intended to encompass all changes falling within the meaning and range of equivalents of the claims.

[0115] In addition, it should be understood that although the present specification is described in terms of embodiments, each embodiment does not contain only one independent technical solution, and the description manner of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be properly combined to form other embodiments that those skilled in the art can understand.

Claims

1. A powder-in-liquid type dishwashing condensate, characterized in that, The powder-liquid type dishwashing condensation beads comprise a powder cavity and a liquid cavity; the powder cavity comprises a powder, and the liquid cavity comprises a concentrated liquid; the mass ratio of the powder to the concentrated liquid is (1-3):1; The powder comprises the following components in mass fraction: The concentrated liquid comprises the following components in mass fraction: Among them, The synergist is sodium maleate diisooctyl sulfonate; The structural formula of the sodium maleate diisooctyl sulfonate is: The chelating agent is an amino acid derivative chelating agent; The structural formula of the chelating agent is: R is selected from H, Na, K; The basic salt is selected from one or more of silicate, sulfate, bicarbonate, carbonate, citrate; The washing aid is selected from one or more of enzyme preparation, defoaming agent, percarbonate activator, essence, pigment.

2. The powder-in-liquid type dishwashing condensation bead according to claim 1, wherein, The percarbonate is a coated percarbonate; The coated percarbonate is selected from one or more of coated sodium percarbonate, coated potassium percarbonate or coated calcium percarbonate.

3. The powder-in-liquid type dishwashing condensation bead according to claim 1, wherein, The acrylic polymer is selected from one or more of acrylic homopolymer or acrylic acid / sulfonic acid copolymer; The molecular weight of the acrylic polymer is 500-20,000.

4. The powder-in-liquid type dishwashing condensation bead according to claim 1, wherein The surfactant is selected from one or more of EO / PO block polyether surfactant, isooctanol phosphate ester derivative surfactant, ethoxylated fatty acid methyl ester derivative surfactant, polyether modified silicone surfactant.

5. A process for the preparation of a powder-in-liquid type dishwashing condensation bead according to any one of claims 1 to 4, characterized in that, The preparation method of the powder-liquid type dishwashing condensation beads comprises the following steps: S1. Mixing a basic salt, percarbonate, acrylic polymer, surfactant and washing aid to obtain a powder; S2. Mixing a synergist, hexanediol, chelating agent and water to obtain a concentrated liquid; S3. Using a water-soluble film to divide and coat the powder and the concentrated liquid to form a powder cavity and a liquid cavity, thereby obtaining the powder-liquid type dishwashing condensation beads.

6. The method for preparing powder-liquid type dishwashing beads according to claim 5, characterized in that, In step S1, the surfactant is added to the powder in the form of spraying.

7. The method for preparing powder-liquid type dishwashing beads according to claim 5, characterized in that, In step S2, the synergist is first dissolved with hexanediol, and then mixed with the chelating agent and water.

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