A water-soluble cleaning sheet and methods of making and using the same

Abstract

The application relates to the field of cleaning materials, in particular to a water-soluble cleaning agent sheet and a preparation method and use method thereof. The water-soluble cleaning agent sheet comprises the following components in parts by mass: 12-35 parts of a film forming agent, 0-3 parts of a thickening agent, 0-10 parts of a water quality softening agent, 15-50 parts of an anionic surfactant, 1-10 parts of a non-ionic surfactant, 1-10 parts of a zwitterionic surfactant, 0-10 parts of a solubilizing agent, 1-10 parts of an acrylic ester polymer, 0-10 parts of a plant extract, and 0-1 part of a preservative. The product can be uniformly and easily sprayed when used, abundant foam is generated, the product can be in contact with stains for a long time, has a better stain removal effect, and is convenient to transport.

Description

Technical Field

[0001] This application relates to the field of cleaning materials, and more specifically, to a water-soluble cleaning agent sheet, a method for preparing the same, and a method for using the same. Background Technology

[0002] Currently, the cleaning product market is experiencing a diverse and abundant development trend, encompassing various types of cleaning materials from liquid cleaners to solid concentrated detergents. Most cleaning agents on the market are water-based, formulated with compound surfactants. In particular, household hard surface cleaners, which are applied via spraying, are primarily offered to consumers in liquid form.

[0003] To ensure the cleaning agent in the spray bottle is sprayed more evenly and easily, the concentration of active ingredients in the cleaning agent is generally low. This results in the need for multiple sprays and wiping when cleaning stubborn stains, significantly extending the cleaning time.

[0004] At the same time, because the concentration of active ingredients is generally low, the cleaning agent foam sprayed through the spray bottle is sparse and quickly disperses or slides off the stain surface, making it difficult to stay on the stain. Especially for stains on vertical surfaces such as walls, bathrooms, car bodies, and glass, it is difficult for the cleaning agent to make complete contact, greatly reducing the cleaning effect.

[0005] Furthermore, there is a risk of leakage during the transportation of large quantities of liquid cleaning agents. Additionally, transporting large amounts of water as a substrate results in unnecessary waste and increased costs.

[0006] In conclusion, there is still room for improvement. Summary of the Invention

[0007] To address the aforementioned deficiencies, this application provides a water-soluble cleaning agent sheet, its preparation method, and its application method. The product provided by this application allows the cleaning agent to be sprayed evenly and easily during use, producing rich foam, and maintaining prolonged contact with stains for better cleaning performance; it is also convenient for transportation.

[0008] In a first aspect, this application provides a water-soluble cleaning agent sheet, which adopts the following technical solution:

[0009] A water-soluble cleaning agent sheet, comprising the following components by weight: 12-35 parts film-forming agent, 0-3 parts thickener, 0-10 parts water softener, 15-50 parts anionic surfactant, 1-10 parts nonionic surfactant, 1-10 parts amphoteric surfactant, 0-10 parts solubilizer, 1-10 parts acrylate polymer, 0-10 parts plant extract, and 0-1 part preservative;

[0010] The anionic surfactant is one or a mixture of α-alkenyl sulfonate, dodecylbenzene sulfonate, disodium succinate-C-(2-cocoaluminoethyl) ester sulfonate, and dodecyl sulfate.

[0011] The nonionic surfactant is one or more of alkyl glycosides, maltodextrins, coconut oil fatty acid diethanolamide, and cocamidomethyl MEA;

[0012] The zwitterionic surfactant is one or a mixture of N-(2-aminoethyl)-N-(2-hydroxyethyl)-β-alanine-N-coconut oil derivative monosodium salt, cocoylamine propyl betaine, dodecyl dimethylamine oxide, disodium cocoyl amphoteric diacetate, and sodium imidazoline dipropionate of coconut oil fatty acids.

[0013] By controlling the specific ratio of unethoxylated surfactants, the resulting product exhibits excellent emulsification of stains while generating abundant, thick foam. In this particular surfactant formulation system, water-based acrylate polymers are incorporated, resulting in a highly viscous aqueous solution when sprayed, innovatively introducing "spray-adhesive" technology into the formulation. Using this product effectively increases the contact time between the product and the stain surface, thereby enhancing its detergency, which is particularly important for cleaning vertical surfaces. Furthermore, when sprayed from a spray bottle, the cleaning solution possesses good shear resistance, causing the detergent components to form a thick, dense foam that adheres well to the stain surface, increasing the contact time and thus better extending the adsorption, wetting, and emulsification time of stains.

[0014] The product provided in this application is in sheet form and can be used after being diluted with water when cleaning is required. This product exhibits excellent stain removal capabilities; for common everyday stains, a simple and easy rinsing is sufficient to achieve a clean result. It is simple and convenient to use, has strong cleaning power, easily removes dirt, and reduces cleaning time. This product contains no ethoxylated substances, effectively avoiding the generation of harmful components such as 1,4-dioxane during use.

[0015] Preferably, the anionic surfactant is a combination of dodecyl sulfate, α-alkenyl sulfonate, and disodium succinate-C-(2-cocoaluminoethyl) ester sulfonate;

[0016] The nonionic surfactant is a combination of alkyl glycosides and cocamidomethyl MEA;

[0017] The zwitterionic surfactant is a combination of N-(2-aminoethyl)-N-(2-hydroxyethyl)-β-alanine-N-coconut oil derivative monosodium salt, disodium cocoamphodiacetate, and sodium imidazoline dipropionate of coconut oil fatty acid.

[0018] By employing the above technical solutions, and further selecting and compounding specific types of anionic, nonionic, and amphoteric surfactants, a richer foam is generated. Furthermore, through a special combination with acrylate polymers, the product's aqueous solution exhibits optimized shear-thinning rheological properties, providing shear resistance during application. This allows the cleaning agent aqueous solution to be evenly sprayed onto the stain surface in the form of a viscous foam, without immediately sliding off, thereby increasing the contact time with the stain surface and prolonging the adsorption, wetting, and emulsification of stains, thus improving the cleaning power. Simultaneously, the excellent spray adhesion allows the cleaning agent to be sprayed directionally and in a controlled manner onto a small area of ​​the stain surface, leaving uncontaminated areas unaffected, significantly reducing cleaning time and making it convenient and practical.

[0019] Preferably, in the anionic surfactant, the mass ratio of dodecyl sulfate, α-alkenyl sulfonate, and disodium succinate-C-(2-cocoaluminoethyl) ester sulfonate is (20-30):(3-8):(1-3);

[0020] In nonionic surfactants, the mass ratio of alkyl glycosides to cocamide methyl MEA is (1-3):(2-5);

[0021] In the zwitterionic surfactant, the mass ratio of N-(2-aminoethyl)-N-(2-hydroxyethyl)-β-alanine-N-coconut oil derivative monosodium salt, disodium cocoamphodiacetate, and sodium imidazoline dipropionate of coconut oil fatty acid is (1-3):(1-3):(0.1-2).

[0022] By adopting the above technical solution and further limiting the amount of various surfactants used, it is possible to generate richer and finer foam, which can then come into more full contact with the stains. Moreover, the rich and fine foam can spread more quickly and evenly on the surface of the area to be cleaned, forming a thin layer of viscous foam, which helps to further extend the residence time of the foam in the area to be cleaned, thereby improving the cleaning ability.

[0023] Preferably, the acrylate polymer is present in parts by weight of 2-6 parts.

[0024] By adopting the above technical solution, and further limiting the dosage of various surfactants, the dosage of acrylate polymers is further limited, resulting in a rich foam with a suitable viscosity that is not too thick, allowing for targeted spraying onto designated areas. Furthermore, it allows for appropriate contact time with stains, making it easy to wipe clean.

[0025] Preferably, the film-forming agent is one or more of polyvinyl alcohol and polyvinyl alcohol crosslinked polymers.

[0026] Preferably, the mass ratio of film-forming agent to thickener is (20-26):(0.5-1.5).

[0027] Sheets are prepared by mixing water-soluble polyvinyl alcohol of different molecular weights, polyvinyl alcohol cross-linked polymers, and thickeners in a specific ratio. The formulation system has multiple effects, including protecting the colloid, swelling upon contact with water, and promoting dissolution.

[0028] Water-soluble cleaning sheets can be dispensed without plastic packaging and dissolve quickly and completely in water during use.

[0029] Preferably, the thickener is any combination of one or more water-soluble polymer colloids and cellulose.

[0030] Preferably, the water-soluble polymeric adhesive is one or a mixture of xanthan gum, gum arabic, guar gum, and locust bean gum. The cellulose is one or a combination of carboxymethyl cellulose, hydroxypropyl methyl cellulose, hydroxyethyl cellulose, and polyanionic cellulose.

[0031] The aforementioned thickeners, when combined with acrylate polymers, can further enhance the viscosity of the foam formed by re-spraying, resulting in more stable and durable viscosity properties.

[0032] It is worth noting that although a thickener is used in this application, the cleaning solution, after being diluted with water, still has a relatively thin consistency and does not affect spraying. The cleaning solution in this application only forms a high-viscosity foam after spraying.

[0033] Preferably, the solubilizer includes one or more of alcohol solubilizers and ether solubilizers.

[0034] Preferably, the alcohol solubilizer is one or a combination of ethanol, ethylene glycol, glycerol, propylene glycol, dipropylene glycol, isopropanol, pentanediol, butanediol, and isohexyl glycol. The ether solubilizer is one or a combination of diethyl ether, n-ethyl ether, dimethyl ether, ethylene glycol ether, and dipropylene glycol ether.

[0035] Preferably, the solubilizer is isohexanediol or dipropylene glycol ether, and the mass ratio of isohexanediol to dipropylene glycol ether is 5:(1-5).

[0036] By adopting the above technical solution and further selecting specific types and proportions of solubilizers, it is possible to better remove stains.

[0037] Preferably, the plant extract is at least one of Sapindus mukorossi extract and Camellia oleifera extract.

[0038] Preferably, the plant extract is Sapindus mukorossi extract and Camellia oleifera extract, with a mass ratio of Sapindus mukorossi extract to Camellia oleifera extract of 1:(0.8-1.2), based on the mass of Sapindus mukorossi extract.

[0039] By adopting the above technical solution and compounding an appropriate amount of specific plant extracts, it is helpful to further improve foam performance, reduce the irritation of the formula system, reduce the corrosiveness to the cleaned surface, and extend the service life of the household.

[0040] Preferably, the water softener is any one or more of the following: trisodium methylglycine diacetate, tetrasodium ethylenediaminetetraacetate, sodium gluconate, trisodium dicarboxymethylalanine, and tetrasodium dicarboxymethyl aspartate, combined with sodium citrate.

[0041] By adopting the above technical solutions and selecting specific types of water softeners, it is possible to achieve better softening effects on everyday tap water (hard water). Furthermore, adding sodium citrate in combination with other water softeners helps the sheets dissolve better during use. Using sodium citrate as a water softener is also more complete and environmentally friendly.

[0042] Preferably, the preservative is a high-temperature resistant preservative. The preservative is at least one selected from hydroxydichlorodiphenyl ether, dichlorobenzyl alcohol, methylparaben, and ethylparaben.

[0043] Secondly, this application provides a method for preparing a water-soluble detergent sheet, which adopts the following technical solution:

[0044] A method for preparing a water-soluble cleaning agent sheet includes the following steps: mixing various raw materials with water until homogeneous, drying and then forming the sheet.

[0045] By adopting the above technical solution, the cleaning agent is made into sheets, which eliminates the need to transport it along with water, thus improving safety and stability and reducing costs.

[0046] Preferably, a method for preparing a water-soluble detergent sheet includes the following steps:

[0047] Prepare water in an amount 2-3 times the weight of the film-forming agent. Mix the water with the thickener, heat to 50-60℃, then add the film-forming agent and stir. Continue heating to 80-90℃ until the mixture is completely dissolved and homogeneous, then stop heating.

[0048] Then add water softener, anionic surfactant, nonionic surfactant, amphoteric surfactant, and solubilizer, and stir until dissolved evenly.

[0049] The acrylate polymer is premixed with water, diluted and dissolved, and then added to the above materials. The mixture is stirred until it is evenly dissolved. The mass ratio of the acrylate polymer to water is 1:(1-3).

[0050] Then add plant extracts and preservatives, stir and dissolve evenly to obtain a slurry.

[0051] The slurry is dried, demolded, and sliced ​​to obtain sheets.

[0052] Thirdly, this application provides a method for using a water-soluble cleaning agent sheet, employing the following technical solution:

[0053] A method for using a water-soluble cleaning agent sheet includes the following steps: mixing and diluting the sheet with water at a ratio of 1:(100-1000), dissolving it evenly, placing it in a pressure spray bottle, and then spraying it onto the stained surface for cleaning.

[0054] After the sheet is mixed and diluted with water, it remains a liquid with a certain degree of fluidity in the pressure sprayer. When it is sprayed out of the pressure sprayer, the force causes the cleaning solution to instantly turn into a thick, dense, rich, and delicate foam, which adheres to the surface of the area to be cleaned. This increases the contact time with the stains, prolongs the time for adsorbing, wetting, and emulsifying the stains, and improves the cleaning effect.

[0055] In summary, this application has the following beneficial effects:

[0056] 1. By limiting the specific ratio of unethoxylated surfactants, the resulting product exhibits excellent emulsification of stains while generating abundant, thick foam. In this specific surfactant formulation system, the addition of water-based acrylate polymers ensures the aqueous solution exhibits good viscosity during spraying, innovatively introducing "spray-adhesive" technology into the formulation. Using this product effectively increases the contact time between the product and the stain surface, thereby enhancing its detergency, which is particularly important for cleaning vertical surfaces. Furthermore, when sprayed from a spray bottle, the cleaning agent aqueous solution possesses good shear resistance, causing the detergent components to form a thick, dense foam that adheres well to the stain surface, increasing the contact time and thus better extending the adsorption, wetting, and emulsification time of stains.

[0057] 2. The sheets prepared in this application can be used without plastic packaging and can dissolve quickly and completely in water before use. This product can be prepared into solid sheet products of any size. After being diluted with a certain proportion of water, it can be used to clean stained surfaces (it can also be used on vertical surfaces). It is convenient, practical, easy to transport and store, and suitable for large-scale production.

[0058] 3. This product contains no ethoxylated substances, thus avoiding the generation of harmful components such as 1,4-dioxane during use; it also effectively increases foaming performance, reduces the irritation of the formula system, helps reduce corrosion to the cleaned surface, and extends the service life of the product. Attached Figure Description

[0059] Figure 1 This is a photograph of the water-soluble cleaning agent sheet from Embodiment 3 of this application.

[0060] Figure 2 This is a state diagram of Example 3 of this application in detection 2), and also the detection result of the aqueous solution in Test 1.

[0061] Figure 3 This is a state diagram of Comparative Example 1 in this application during detection 2).

[0062] Figure 4 This is the state diagram of Comparative Example 2 in Detection 2).

[0063] Figure 5 This is a state diagram of Comparative Example 5 in test 2).

[0064] Figure 6 This is a state diagram of Comparative Example 6 in test 2).

[0065] Figure 7 This is a graph showing the detection results of the aqueous solution in Test 1 of this application.

[0066] Figure 8This is a graph showing the detection results of the aqueous solution in Test 3 of this application. Detailed Implementation

[0067] The present application will be further described in detail below with reference to the accompanying drawings and embodiments.

[0068] The raw materials used in the following examples and comparative examples are all commercially available products.

[0069] Example

[0070] In the following embodiments and comparative examples:

[0071] The film-forming agent can be polyvinyl alcohol or / and polyvinyl alcohol crosslinked polymer.

[0072] Thickeners can be xanthan gum, gum arabic, hydroxyethyl cellulose, hydroxypropyl methyl cellulose, or polyanionic cellulose.

[0073] Water softeners can be trisodium methylglycine diacetate, sodium citrate, tetrasodium ethylenediaminetetraacetate, sodium gluconate, or trisodium dicarboxymethylalanine.

[0074] Anionic surfactants can be sodium dodecyl sulfate, potassium sodium dodecyl sulfate, sodium α-alkenyl sulfonate, potassium α-alkenyl sulfonate, sodium dodecylbenzene sulfonate, potassium dodecylbenzene sulfonate, or disodium succinate-C-(2-cocoaluminoethyl) ester sulfonate.

[0075] Disodium succinate-C-(2-cocoaluminoethyl) ester sulfonate was purchased from Evonik GmbH, Germany, product number TEGOTENSES501.

[0076] Nonionic surfactants can be alkyl glycosides, coconut oil fatty acid diethanolamides, and cocamidomethyl MEA.

[0077] Amphoteric surfactants can be monosodium salts of N-(2-aminoethyl)-N-(2-hydroxyethyl)-β-alanine-N-coconut oil derivatives, cocoylamine propyl betaine, dodecyl dimethylamine oxide, disodium cocoyl amphoteric diacetate, and sodium imidazoline dipropionate of coconut oil fatty acids.

[0078] N-(2-aminoethyl)-N-(2-hydroxyethyl)-β-alanine-N-coconut oil derivative monosodium salt was purchased from Evonik GmbH, Germany, product code REWOTERIC AM KSF 40.

[0079] The solubilizer can be glycerol, propylene glycol, isohexyl glycol, dipropylene glycol butyl ether, dipropylene glycol, or pentanediol.

[0080] Acrylic ester polymers can be acrylic polymers such as CrystaSense Sapphire and acrylic (ester) VA copolymers such as SF-1.

[0081] Plant extracts can include Sapindus mukorossi extract and Camellia oleifera extract.

[0082] Preservatives can be hydroxydichlorodiphenyl ether or dichlorobenzyl alcohol.

[0083] For details on the selection and dosage of specific substances in each embodiment, please refer to Table 1.

[0084] Example 1

[0085] A water-soluble cleaning agent sheet comprises the following components: film-forming agent, thickener, water softener, anionic surfactant, nonionic surfactant, amphoteric surfactant, solubilizer, acrylate polymer, plant extract, and preservative.

[0086] For details on the specific selection and dosage of each raw material, please refer to Table 1.

[0087] This application also discloses a method for preparing a water-soluble detergent sheet, comprising the following steps:

[0088] (1) Weigh water at twice the weight of the film-forming agent, add the water and thickener to the emulsifying pot, and stir to dissolve evenly. Turn on the heater and heat to 55°C, then add the film-forming agent while stirring homogeneously. Continue stirring and heating to 85°C until the material is completely dissolved and homogeneous, then stop heating.

[0089] (2) While stirring, add water softener, anionic surfactant, nonionic surfactant, amphoteric surfactant and solubilizer to the emulsification pot in sequence, and stir until they are evenly dissolved.

[0090] (3) Weigh water at twice the weight of the acrylate polymer, then mix this water with the acrylate polymer, dilute and dissolve, stir evenly to obtain an acrylate polymer solution.

[0091] Add the acrylate polymer solution to the emulsifying pot and stir until dissolved.

[0092] (4) Continue to add plant extract and preservative to the emulsifying pot, and stir until dissolved evenly to obtain a slurry with good stability.

[0093] (5) The prepared slurry is transported to the drying equipment through pipeline for drying.

[0094] (6) After molding and demolding, slice the product to obtain the following: Figure 1 The water-soluble cleaning agent sheet shown.

[0095] This application also discloses a method for using a water-soluble cleaning agent sheet, including the following steps: mixing and diluting the sheet with water at a ratio of 1:500, dissolving it evenly, placing it in a pressure spray bottle, and then spraying it onto the stained surface for cleaning.

[0096] Examples 2-8

[0097] A water-soluble cleaning agent sheet differs from Example 1 in that the selection and dosage of each raw material are different, as detailed in Table 1.

[0098] Table 1

[0099]

[0100]

[0101]

[0102] Comparative Example

[0103] Comparative Example 1

[0104] A water-soluble cleaning agent sheet, which differs from Example 3 in that the nonionic surfactant, amphoteric surfactant, and acrylate polymer are replaced with water.

[0105] That is, the amount of nonionic surfactant, amphoteric surfactant, and acrylate polymer is 0.

[0106] The anionic surfactant consists of 25 kg sodium dodecyl sulfate, 5 kg sodium α-olefin sulfonate, and 2 kg sodium dodecylbenzene sulfonate.

[0107] Comparative Example 2

[0108] A water-soluble cleaning agent sheet differs from Example 3 in that the nonionic surfactant and amphoteric surfactant are replaced with water.

[0109] That is, the amount of nonionic surfactant and amphoteric surfactant used is 0.

[0110] The anionic surfactant consists of 25 kg sodium dodecyl sulfate, 5 kg sodium α-olefin sulfonate, and 2 kg sodium dodecylbenzene sulfonate.

[0111] Comparative Example 3

[0112] A water-soluble cleaning agent sheet, which differs from Example 3 in that the nonionic surfactant and acrylate polymer are replaced with water.

[0113] That is, the amount of nonionic surfactant and acrylate polymer is 0.

[0114] The anionic surfactant consists of 25 kg sodium dodecyl sulfate, 5 kg sodium α-olefin sulfonate, and 2 kg sodium dodecylbenzene sulfonate.

[0115] The zwitterionic surfactant consists of 2 kg of disodium cocoamphodiacetate, 1 kg of sodium imidazoline dipropionate of coconut oil fatty acid, and 2 kg of monosodium salt of N-(2-aminoethyl)-N-(2-hydroxyethyl)-β-alanine-N-coconut oil derivative.

[0116] Comparative Example 4

[0117] A water-soluble cleaning agent sheet, which differs from Example 3 in that the nonionic surfactant is replaced with water.

[0118] That is, the amount of nonionic surfactant used is 0.

[0119] The anionic surfactant consists of 25 kg sodium dodecyl sulfate, 5 kg sodium α-olefin sulfonate, and 2 kg sodium dodecylbenzene sulfonate.

[0120] The zwitterionic surfactant consists of 2 kg of disodium cocoamphodiacetate, 1 kg of sodium imidazoline dipropionate of coconut oil fatty acid, and 2 kg of monosodium salt of N-(2-aminoethyl)-N-(2-hydroxyethyl)-β-alanine-N-coconut oil derivative.

[0121] Comparative Example 5

[0122] A water-soluble cleaning agent sheet, which differs from Example 3 in that the amphoteric surfactant and acrylate polymer are replaced with water.

[0123] That is, the amount of zwitterionic surfactant and acrylate polymer is 0.

[0124] The anionic surfactant consists of 25 kg sodium dodecyl sulfate, 5 kg sodium α-olefin sulfonate, and 2 kg sodium dodecylbenzene sulfonate.

[0125] The nonionic surfactants are 2 kg of alkyl glycoside and 3 kg of cocamide methyl MEA.

[0126] Comparative Example 6

[0127] A water-soluble cleaning agent sheet, which differs from Example 3 in that the amphoteric surfactant is replaced with water.

[0128] That is, the amount of zwitterionic surfactant used is 0.

[0129] The anionic surfactant consists of 25 kg sodium dodecyl sulfate, 5 kg sodium α-olefin sulfonate, and 2 kg sodium dodecylbenzene sulfonate.

[0130] The non-ionic surfactant is 2 kg of alkyl polyglycoside and 3 kg of coconut oil amide methyl MEA.

[0131] Comparative Example 7

[0132] A water-soluble cleaning sheet, which is different from Example 3 in that

[0133] The anionic surfactant is 25 kg of sodium lauryl polyoxyethylene ether sulfate, 5 kg of sodium fatty alcohol methyl ester sulfonate, and 2 kg of fatty acid methyl ester ethoxysulfonate.

[0134] The non-ionic surfactant is 2 kg of fatty alcohol polyoxyethylene ether and 1 kg of isomeric alcohol ether.

[0135] The zwitterionic surfactant is 2 kg of dodecyl dimethyl betaine, 1 kg of sodium lauroamphoacetate, and 2 kg of oleamide propyl dimethyl betaine.

[0136] Performance detection test

[0137] 1. Detergency effect: According to Appendix A "Determination of detergency" in QB / T 4532-2013 "Hard floor cleaner", the cleaning strength of the sheets of Examples 1-8 and Comparative Examples 1-7 was tested, and the detergency (%) was recorded in Table 2.

[0138] The greater the detergency obtained by the test, the better the detergency effect, and vice versa. Detergency ≥ 90% is qualified, otherwise it is considered unqualified.

[0139] Table 2

[0140]

[0141]

[0142] From the comparison of the detection data of Examples 1-8 and Comparative Examples 1-7 in Table 2, it can be seen that the sheets prepared in Examples 1-8 of the present application have significantly better detergency ability than those of Comparative Examples 1-7.

[0143] 2. Foam performance detection:

[0144] Detection 1):

[0145] Prepare 15 glass cups of the same size and model with a volume of 25 ml.

[0146] Dilute and mix the sheets of Examples 1-8 and Comparative Examples 1-7 with water in a ratio of 1:500 to prepare an aqueous solution, and spray it into the cleaned 25-ml glass cups through a foaming bottle until the foam fills up to the 25-ml scale line of the glass cup, and scrape off the excess foam on the surface.

[0147] Place the glass cups filled with foam on the experimental table and let them stand for 5 minutes and 10 minutes. Observe the changes in the foam in each glass cup and record them in Table 3.

[0148] Test 2):

[0149] The sheets from Examples 1-8 and Comparative Examples 1-7 were diluted and mixed with water at a ratio of 1:500 to prepare an aqueous solution, which was then sprayed onto the cleaned vertical glass surface using a pressure sprayer.

[0150] Mark a 100cm x 100cm area on a vertical glass surface, and draw a horizontal line 4cm below the area. Spray the foam approximately 12cm from the center of the area, using one pump (5-6g). Record the time it takes for the foam to slide down to the bottom of the horizontal line and record the data in Table 3. A longer time indicates a better retention effect, while a shorter time indicates a poorer retention effect.

[0151] Table 3

[0152]

[0153]

[0154] According to the test results in Table 3, the functional water-soluble cleaning agent sheet of this application embodiment, compared with the comparative examples, has a much greater amount of foam after standing for five and ten minutes than that of comparative examples 1-7, and its foam morphology hardly changes, and the foam remains dense.

[0155] Comparing the test data of Examples 1-8 and Comparative Examples 1-7 in Tables 2 and 3, it can be seen that the products of Comparative Examples 1-7 not only have inferior detergency performance compared to Examples 1-8, but also exhibit inferior foam morphology, foam quantity, and foam retention time. This indicates that by changing the formulation system or type of the Comparative Examples 1-7, the specific formulation effect was disrupted, making it impossible to generate rich foam that adheres for a long time to the area to be cleaned (especially vertical areas to be cleaned).

[0156] Figure 2 This is the state diagram of Example 3 in detection 2). Figure 3 This is a state diagram of Comparative Example 1 during detection 2). Figure 4 This is the state diagram of Comparative Example 2 in Detection 2). Figure 5 This is a state diagram of Example 5 in Detection 2). Figure 6 This is a state diagram of Comparative Example 6 in Detection 2).

[0157] 3. Adhesion performance test:

[0158] The sheet from Example 3 was diluted and mixed with water at a ratio of 1:1000 to obtain an aqueous solution of Sample 1.

[0159] Example 3: The sheet was diluted and mixed with water at a ratio of 1:500 to form an aqueous solution of Sample 2.

[0160] Example 3: The sheet was diluted and mixed with water at a ratio of 1:250 to form an aqueous solution of sample 3.

[0161] Place the above aqueous solution into a commercially available pressure spray bottle, spray it onto a clean, vertical glass surface, observe and take photos.

[0162] For details of the test results of the aqueous solution in Experiment 1, please refer to [link / reference]. Figure 7 For details of the test results of the aqueous solution in Experiment 2, please refer to [link / reference]. Figure 2 For details of the test results of the aqueous solution in Experiment 3, please refer to [link / reference]. Figure 8 .

[0163] By comparison Figure 2 , 7 As shown in section 8, the diluted water-soluble cleaning tablets adhere well to smooth, vertical surfaces after spraying and do not easily slip off. The foam concentrates on the area to be cleaned, and the foam density increases with increasing dilution concentration. This allows for easy adjustment of the dilution concentration based on the degree of staining during daily use, avoiding waste and making it convenient and practical. Furthermore, this product is in solid tablet form, eliminating the need for plastic packaging, facilitating transportation and storage. It also significantly reduces the use of plastic spray bottles, minimizing waste and white pollution.

[0164] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A water-soluble cleaning agent sheet, characterized in that, According to the mass fraction, it includes the following components: 12-35 parts film-forming agent, 0-3 parts thickener, 0-10 parts water softener, 15-50 parts anionic surfactant, 1-10 parts nonionic surfactant, 1-10 parts amphoteric surfactant, 0-10 parts solubilizer, 2-6 parts acrylate polymer, 0-10 parts plant extract, and 0-1 part preservative; The anionic surfactant is a combination of dodecyl sulfate, α-alkenyl sulfonate, and disodium succinate-C-(2-cocoaluminoethyl) ester sulfonate, and the mass ratio of dodecyl sulfate, α-alkenyl sulfonate, and disodium succinate-C-(2-cocoaluminoethyl) ester sulfonate is (20-30):(3-8):(1-3). The nonionic surfactant is a combination of alkyl glycoside and cocamide methyl MEA, and the mass ratio of the alkyl glycoside to cocamide methyl MEA is (1-3):(2-5). The zwitterionic surfactant is a combination of N-(2-aminoethyl)-N-(2-hydroxyethyl)-β-alanine-N-coconut oil derivative monosodium salt, disodium cocoamphodiacetate, and sodium imidazoline dipropionate of coconut oil fatty acid, and the mass ratio of N-(2-aminoethyl)-N-(2-hydroxyethyl)-β-alanine-N-coconut oil derivative monosodium salt, disodium cocoamphodiacetate, and sodium imidazoline dipropionate of coconut oil fatty acid is (1-3):(1-3):(0.1-2).

2. The water-soluble cleaning agent sheet according to claim 1, characterized in that: The film-forming agent is one or more of polyvinyl alcohol and polyvinyl alcohol crosslinked polymers.

3. The water-soluble cleaning agent sheet according to claim 1, characterized in that: The solubilizer includes one or more of alcohol solubilizers and ether solubilizers.

4. The water-soluble cleaning agent sheet according to claim 1, characterized in that: The plant extract is at least one of Sapindus mukorossi extract and Camellia oleifera extract.

5. A method for preparing a water-soluble detergent sheet according to any one of claims 1-4, characterized in that, Includes the following steps: Prepare water in an amount of 2-3 times the weight of the film-forming agent. Mix the water with the thickener, heat to 50-60℃, then add the film-forming agent and stir. Continue to heat to 80-90℃ until the mixture is completely dissolved and homogeneous, then stop heating. Then continue to add water softener, anionic surfactant, nonionic surfactant, amphoteric surfactant, and solubilizer, and stir until dissolved evenly; The acrylate polymer is premixed with water, diluted and dissolved, and then added to the above materials. The mixture is stirred until it is evenly dissolved. The mass ratio of the acrylate polymer to water is 1:(1-3). Then add plant extract and preservative, stir and dissolve evenly to obtain slurry; The slurry is dried, demolded, and sliced ​​to obtain sheets.

6. A method of using a water-soluble cleaning agent sheet according to any one of claims 1-4, characterized in that, The process includes the following steps: mixing and diluting the sheet with water at a ratio of 1:(100-1000), dissolving it evenly, placing it in a pressure spray bottle, and then spraying it onto the stained surface for cleaning.

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