Two-in-one solid detergent composition and method for preparing same

Abstract

This application relates to the technical field of detergent materials, and more specifically, provides a two-in-one solid detergent composition and a method for preparing the same. The two-in-one solid detergent composition contains, based on 100% weight of raw materials, 10 to 30% (a) forming agent, 10 to 50% (b) surfactant, 5 to 20% (c) softener, 10 to 30% (d) forming aid, and optionally 0.1 to 1% (e) softening conditioner, 0.1 to 1% (f) forming stabilizer, 1 to 10% (g) water softener, 1 to 10% (h) soil dissolving agent, or 0.1 to 5% (i) fragrance enhancer, with the remainder being deionized water. The solid detergent composition employs an anionic surfactant with an ethoxy group, which, by attraction of positive and negative charges, avoids precipitation caused by cationic softeners and provides a two-in-one effect of cleaning and softening.

Description

[Technical Field]

[0001] FIELD OF THE INVENTION This application relates to the field of detergent materials, and in particular to two-in-one solid detergent compositions and methods for preparing same. [Background technology]

[0002] Traditionally, detergents used to wash textiles such as clothing are generally in liquid form. Liquid detergents contain a large amount of water and are bulky, requiring large amounts of packaging, resulting in high transportation costs and the risk of leakage during storage and use. Considering this situation, there are two major solutions. One is to concentrate and encapsulate liquid detergents into granules, but this requires expensive capsule film and the preparation method is relatively complicated. The other is to directly convert liquid detergents into solid detergents in regular or irregular shapes such as tablets, granules, rods, or tubes. These solid detergents are then added to washing machines and other cleaning equipment. When they encounter water, they quickly disintegrate, disperse, and dissolve in the water, providing effective cleaning.

[0003] Existing methods for preparing solid detergents have the following challenges: (1) They require the compounding of liquid detergent components to form a stable solid state, without softening or dissolving of the raw materials at least at 60°C, and stable performance. (2) They have poor hygroscopicity, but they quickly decompose and disperse in water, dissolving in water and performing their cleaning function quickly. (3) They have at least the same cleaning effect as liquid detergents and leave no residue after rinsing. (4) When adding a cationic fabric softener to a solid detergent, it is necessary to avoid precipitation of the anionic surfactant in the detergent due to adsorption of positive and negative charges, which could affect its performance. Prior art detergent tablets, such as those disclosed in Chinese patent application CN116194562A, first encase the softener in polyethylene glycol / polypropylene glycol, then add it to a carrier such as bentonite, and prepare solid granules by a drying method such as spray drying, which are then combined with the remaining detergent ingredients to prepare detergent tablets. This method requires an additional step of preparing the detergent tablets and requires additional drying equipment such as a spray dryer, increasing process time and costs.

[0004] Therefore, further study was conducted on the selection of raw materials and preparation method for the cleaning and softening two-in-one (2in1) tablet detergent, and it was possible to prepare an effective tablet detergent with a simple preparation method. Summary of the Invention

[0005] To solve the above technical problems, the present application provides a two-in-one solid detergent composition and a method for preparing the same.

[0006] This application adopts the following technical solutions: The two-in-one solid detergent composition contains, based on 100% by weight of raw materials, 10 to 30% (a) a molding agent, 10 to 50% (b) a surfactant, 5 to 20% (c) a softening agent, 10 to 30% (d) a molding aid, and optionally 0.1 to 1% (e) a softening conditioner, 0.1 to 1% (f) a molding stabilizer, 1 to 10% (g) a water softener, 1 to 10% (h) a soil dissolving agent, or 0.1 to 5% (i) a fragrance enhancer, with the remainder being deionized water; The surfactant contains an anionic surfactant and a nonionic surfactant, The structure of the anionic surfactant is R 1 (EO) n R 2 M, where n=1 to 15, and R 1 is selected from a hydrocarbon group (C4-C20) or a substituted hydrocarbon group (C4-C20), and R 2 is selected from one or more combinations of sulfate ions, sulfonate ions, phosphate ions, and carboxylate ions; M is selected from alkali metal ions or ammonium ions; and EO represents -CH2CH2O-.

[0007] Preferably, the weight ratio of the anionic surfactant to the nonionic surfactant in the surfactant is 1:9 to 9:1.

[0008] Preferably, the surfactant also contains a zwitterionic surfactant, the zwitterionic surfactant comprising 10 to 40% by weight of the surfactant.

[0009] Preferably, the molding agent is selected from a combination of one or more of polyvinyl alcohol, polyvinyl alcohol crosspolymer, polyvinylpyrrolidone, and vinyl acetate-vinyl alcohol copolymer.

[0010] Preferably, the softening agent is selected from a combination of one or more of aminosilicone oil, aminosilicone oil emulsion, aminosilicone oil microemulsion, and cationic polysiloxane and emulsions thereof.

[0011] Preferably, the forming aid is selected from a combination of one or more of anhydrous sodium sulfate, starch, kaolin, attapulgite, bentonite, and silica.

[0012] Preferably, the softening conditioner is selected from cationic celluloses.

[0013] Preferably, the form stabilizer is selected from a combination of one or more of hydroxyethyl cellulose, hydroxypropyl methyl cellulose, gelatin, carrageenan, and polyanionic cellulose.

[0014] Preferably, the soil dissolving agent is selected from polyols having a molecular weight of 150 or less.

[0015] In any one of the above technical solutions, the method for preparing a two-in-one solid detergent composition comprises: The method for preparing a two-in-one solid detergent composition comprises adding the deionized water to a container, adding and dissolving the molding agent, adding the surfactant, and stirring to dissolve uniformly, and then adding the remaining raw materials in order, stirring to disperse and dissolve uniformly, and drying the resulting detergent slurry, releasing it from the mold, and shaping it to obtain a solid detergent composition.

[0016] In summary, the present application has the following beneficial technical effects: 1. The anionic surfactant used in the two-in-one solid detergent composition of the present application contains a polyoxyethylene ether chain segment. After mixing this anionic surfactant with the cationic softener selected in the present application, precipitation occurs due to charge adsorption, which has been found to have no effect on the performance of the softener. Therefore, there is no need to coat the softener and add it to a carrier in advance, and the preparation method is simple.

[0017] 2. The present two-in-one solid detergent composition has good cleaning effect, good antistatic effect and softness of washed fabrics, and can maintain good cleaning effect and good antistatic effect even when mixed with other detergents. 3. The present two-in-one solid detergent composition has good storage stability, a softening temperature of above 60°C, and meets the requirements for both dryness resistance and humidity resistance. DETAILED DESCRIPTION OF THE INVENTION

[0018] To further clarify the objectives, technical solutions and advantages of the present disclosure, the following provides a detailed description of the technical solutions of the present disclosure.

[0019] Throughout this specification, unless otherwise specified, the terms used herein shall be interpreted as commonly used in the art.Therefore, unless otherwise defined, all technical and scientific terms used in this disclosure have the same meaning as commonly understood by those skilled in the art.In the event of any discrepancy, this specification shall prevail.

[0020] On the other hand, the two-in-one solid detergent composition provided herein contains, based on 100% weight of raw materials, 10 to 30% (a) molding agent, 10 to 50% (b) surfactant, 5 to 20% (c) softener, 10 to 30% (d) molding aid, and optionally 0.1 to 1% (e) softening conditioner, 0.1 to 1% (f) molding stabilizer, 1 to 10% (g) water softener, 1 to 10% (h) soil dissolving agent, or 0.1 to 5% (i) fragrance enhancer, with the remainder being deionized water.

[0021] (a) Molding agent The molding agent plays a role in molding the solid detergent composition and has good water solubility, and is selected from one or more combinations of polyvinyl alcohol, polyvinyl alcohol crosspolymer, polyvinylpyrrolidone, and vinyl acetate-vinyl alcohol copolymer. Taking polyvinyl alcohol (PVA) as an example, the alcoholysis degree of the PVA in this application is 86% to 89%, and it may have a low degree of polymerization (average molecular weight of 2 to 100,000), a medium degree of polymerization (average molecular weight of 12 to 150,000), a high degree of polymerization (average molecular weight of 17 to 220,000), or an ultra-high degree of polymerization (average molecular weight of 25 to 300,000). For example, the PVA may be BP-05, BP-17, PVA17-88, etc. Taking polyvinylpyrrolidone (PVP) as an example, it may be PVP K30, PVP K60, PVP K90, etc.

[0022] Further, in the present application, the weight percentage of the forming agent in the detergent may be 10 to 25%, for example, any value among 10%, 12%, 14%, 15%, 16%, 18%, 20%, 22%, 24%, 25%, etc.

[0023] (b) Surfactants Surfactants are the main components that allow detergents to perform their cleaning function. In the present application, the surfactants include anionic surfactants and nonionic surfactants, and the weight ratio of the anionic surfactants to the nonionic surfactants may be 1:9 to 9:1. Here, the structure of the anionic surfactant is R 1 (EO) n R 2 M, where n=1 to 15, and R 1 is selected from a hydrocarbon group (C4-C20) or a substituted hydrocarbon group (C4-C20), and R 2 is selected from one or more combinations of sulfate ions, sulfonate ions, phosphate ions, and carboxylate ions, M is selected from alkali metal ions or ammonium ions, and EO represents -CH2CH2O-. For example, anionic surfactants include C 12 H25 (EO)3OSO3Na, C8H 17 (EO)2OSO3Na, C 12 H 25 (EO)3OSO3NH4, C 15 H 31 (EO)4OSO3Na, C 12 H 25 O(EO)4CH2CH2SO3Na, C 15 H 31 O(EO)5CH2CH2SO3Na, C 18 H 37 O(EO)5CH2CH2SO3Na, C 12-14 H 25-29 O(EO) 10 CH2COONa, C 12-14 H 25-29 O(EO)8CH2COONa, etc. The nonionic surfactant is not particularly limited, and may be, for example, alkyl glucoside, maltoside, alcohol ether glycoside, fatty alcohol ethoxylate AEO-3, AEO-7, AEO-9, AEO-12, alkanamide, isomeric decanol polyoxyethylene ether, isomeric tridecanol polyoxyethylene ether, secondary alcohol ethoxylate, EO-PO block polyoxyethylene ether, or fatty acid oil ester ethoxide.

[0024] The combination of anionic and nonionic surfactants can play a beneficial role in cleaning and decontamination. The present application's 2-in-1 cleaning and softening solid detergent composition contains a fabric softener, which is typically cationic. Anionic surfactants are prone to adsorption of anions and ions, affecting water solubility and causing precipitation, which impacts the detergent's product stability and cleaning and softening effects. The applicant discovered that mixing anionic surfactants containing ethoxy groups with fabric softeners did not result in precipitation or affect the cleaning and softening effects of the detergent composition.

[0025] In the present application, there are no particular limitations on the weight of the anionic surfactant and the nonionic surfactant and the weight ratio in the surfactant, but generally 60% or more is preferred. Furthermore, the weight ratio of the anionic surfactant to the nonionic surfactant in the surfactant may be from 6:1 to 1:3, and for example, the weight ratio may be any one of 6:1, 5:1, 4:1, 3:1, 2:1, 1:1, 1:2, 1:3, etc.

[0026] In the present application, the surfactant may also include a zwitterionic surfactant. Zwitterionic surfactants have low toxicity and irritation, good wetting and foaming properties, and some bactericidal and mildew-inhibiting properties. They can achieve additivity when combined with anionic and / or nonionic surfactants. The zwitterionic surfactant may be selected from betaine, amine oxide, or imidazoline types, or a combination of two or more thereof. For example, cocamidopropyl betaine, lauroylamidopropyl betaine, cocamidopropyl hydroxysultaine, cocamidopropylamine oxide, lauramidopropylamine oxide, cocoamphodiacetate disodium, lauroamphodiacetate disodium, etc. The weight percentage of the zwitterionic surfactant in the surfactant is 10 to 40%, for example, the weight percentage may be any one of 10%, 12%, 15%, 18%, 20%, 22%, 25%, 27%, 30%, 32%, 35%, 37%, 40%, etc.

[0027] In the present application, furthermore, the weight proportion of surfactant in the detergent may be 20 to 40%, for example, any one of the values ​​of 20%, 22%, 24%, 25%, 26%, 28%, 30%, 32%, 38%, 40%, etc.

[0028] (c) Fabric softener Adding a softener to the detergent composition of the present application improves the softness, smoothness, and antistatic properties of fabrics, making them more comfortable to wear. Specifically, the softener may be selected from one or more combinations of aminosilicone oils, aminosilicone oil emulsions, aminosilicone oil microemulsions, and cationic polysiloxanes and their emulsions. Aminosilicone oil emulsions and aminosilicone oil microemulsions are generally acidic, and the amino groups are positively charged, which can improve the stability of emulsions or microemulsions. Cationic polysiloxanes generally refer to quaternary ammonium-type silicones, i.e., the side chain structure of the polysiloxane molecule contains a quaternary ammonium salt group. Two or more different softeners can also be selected for combination, particularly one of which is cationic (such as aminosilicone oil emulsions, aminosilicone oil microemulsions, or quaternary ammonium salt silicone emulsions), to achieve synergistic effectiveness and improve performance. For example, the softening agent may be a composite of polyether-modified polysiloxane and aminosilicone oil emulsion in a weight ratio of 1:2 to 10, a composite of polyether-modified polysiloxane and aminosilicone oil microemulsion in a weight ratio of 1:2 to 10, a composite of polyether-modified polysiloxane and quaternary ammonium salt silicone emulsion in a weight ratio of 1:2 to 10, a composite of aminosilicone oil emulsion and quaternary ammonium salt silicone emulsion in a weight ratio of 5:1 to 1:5, etc.

[0029] Further, in the present application, the weight percentage of the fabric softener in the detergent may be 8 to 17%, for example, any one of 8%, 9%, 10%, 11%, 12%, 13%, 14%, 15%, 16%, 17%, etc.

[0030] (d) Molding aids In the present application, the addition of a molding aid can further improve the stability of the solid detergent composition, particularly meeting the requirements for moisture absorption and drying resistance, and increasing the softening temperature. The molding aid may be selected from one or more combinations of anhydrous sodium sulfate, starch, kaolin, attapulgite, bentonite, and silica. The average particle size of the molding aid is not particularly limited and may be from 1 μm to 1 mm.

[0031] In the present application, furthermore, the weight proportion of the forming aid in the detergent may be 10 to 23%, for example, any one of 10%, 11%, 12%, 13%, 14%, 15%, 16%, 17%, 18%, 19%, 20%, 21%, 22%, 23%, etc.

[0032] (c) Softening conditioner The soft conditioner can further improve the soft conditioning effect. In the present application, the soft conditioner may be selected from cationic celluloses, such as one or a combination of two or more of polyquaternium-6, polyquaternium-7, polyquaternium-10, polyquaternium-39, and polyquaternium-67. Specifically, the weight ratio of the soft conditioner in the detergent may be any one of 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, 1%, etc.

[0033] (f) Molding stabilizer Combining a molding stabilizer with a molding agent can further improve the molding effect and heat resistance, thereby increasing the softening temperature of the solid detergent composition. The molding stabilizer may be selected from one or more combinations of hydroxyethyl cellulose, hydroxypropyl methylcellulose, gelatin, carrageenan, and polyanionic cellulose. Specifically, the weight percentage of the molding stabilizer in the detergent may be any one of 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, 1%, etc.

[0034] (g) Water softeners Water softeners mainly remove magnesium from water. 2+ , Ca 2+ , Al 3+ The purpose of the water softener is to complex or remove metal ions such as ammonium hydroxide, ammonium nitrate, ammonium iodide, etc., thereby reducing water hardness and preventing the interaction of these metal ions with the nonionic surfactant from affecting the cleaning and decontamination effects. For example, the water softener is generally a metal ion complexing agent and may be one or more combinations of tetrasodium dicarboxymethylglutamate, disodium EDTA, sodium gluconate, trisodium dicarboxymethylalanine, sodium hexametaphosphate, and sodium citrate. Specifically, the weight percentage of the water softener in the detergent may be any one of 1%, 2%, 3%, 4%, 5%, 6%, 7%, 8%, 9%, 10%, etc.

[0035] (h) Dirt dissolving agent The soil dissolving agent can improve the dissolving effect of oily soils and improve decontamination ability and effect. In this application, the soil dissolving agent is selected from polyols having a molecular weight of 150 or less, and may be, for example, one or more combinations of glycerol, 1,3-propanediol, dipropylene glycol, diethylene glycol, 1,4-butanediol, pentylene glycol, and isohexanediol. Specifically, the weight ratio of the soil dissolving agent in the detergent may be any one of 1%, 2%, 3%, 4%, 5%, 6%, 7%, 8%, 9%, 10%, etc.

[0036] (i) Aroma enhancer The scent bar enhancer is primarily used to impart a pleasant scent to fabrics, and may be used directly with perfume essences and fragrances, or may be provided in the form of microcapsules, in which the perfume essences and fragrances are coated. Furthermore, the weight percentage of the scent bar enhancer in the detergent may be 0.1 to 2%, for example, 0.1%, 0.3%, 0.5%, 0.7%, 0.8%, 1%, 1.2%, 1.3%, 1.5%, 1.6%, 1.8%, 2%, etc.

[0037] On the other hand, in the method for preparing a two-in-one solid detergent composition according to any one of the above technical solutions of the present application, Deionized water is added to a container, a molding agent is added and dissolved, a surfactant is added and stirred to dissolve uniformly, and then the remaining raw materials are added in turn, stirred to disperse and dissolve uniformly, and the resulting detergent slurry is dried, molded, demolded, and shaped to obtain a solid detergent composition.

[0038] In the method for preparing the two-in-one solid detergent composition described above, the molding stabilizer and the softening conditioner may be pre-dissolved in a portion of deionized water to prepare a solution, which may then be added to a container and stirred to dissolve.

[0039] The technical solution of the present disclosure will be described in further detail below with reference to examples and comparative examples.

[0040] Example 1 The solid detergent contained 100% by weight of 22% BP-05, 24% AES surfactant (from Zanyu Technology Group Co., Ltd.), 6% AEO-9, 12% amino silicone oil emulsion (from Lvlian (Jining) Chemical Technology Co., Ltd.), 18% kaolin with an average particle size of 100 μm, and the remainder was deionized water.

[0041] Deionized water is added to a container, and BP-05 is added. The temperature is raised to 90°C and stirred to dissolve. The container is then cooled to room temperature. AES surfactant and AEO-9 are added and stirred to dissolve uniformly. Kaolin is then added and stirred to disperse uniformly. After that, amino silicone oil emulsion is added and stirred to dissolve uniformly. The resulting detergent slurry is dried in a continuous infrared dryer and molded, then demolded and cut into small pieces to obtain tablet-shaped detergent.

[0042] Example 2 The difference between Example 2 and Example 1 is that the 12% amino silicone oil emulsion in Example 1 is replaced with a combination of 3% polyether-modified polysiloxane (from Jinan Shanhai Chemical Technology Co., Ltd.) and 9% amino silicone oil emulsion, and the remaining steps are the same.

[0043] Example 3 The difference between Example 3 and Example 1 is that in Example 3, the solid detergent composition also contains 0.5% hydroxyethyl cellulose, and the amount of deionized water is correspondingly reduced by 0.5%. The remaining steps are the same.

[0044] Comparative Example 1 The difference between Comparative Example 1 and Example 1 is that the AES surfactant in Example 1 is replaced with an equal weight proportion of sodium dodecyl sulfate. The remaining steps are the same.

[0045] Comparative Example 2 The difference between Comparative Example 2 and Example 1 is that in Example 1, kaolin is not added and the amount of deionized water is increased by 18% accordingly. The remaining steps are the same. When crushing, it was found that the hardness of the detergent composition was very high and it was easy to break during crushing.

[0046] Comparative Example 3 Use the raw material components of Example 1. According to the prior art CN116194562A, firstly, the amino silicone oil is coated with polyethylene glycol / polypropylene glycol copolymer, and then added to kaolin.

[0047] The amino silicone oil microemulsion and the same weight of polyethylene glycol / polypropylene glycol (average molecular weight 2000, EO 70%, PO 30%) are placed in a container and heated until melted, then the amino silicone oil emulsion and 60% kaolin are added, stirred, mixed uniformly, and spray-dried to form softener particles.

[0048] Prepare according to the preparation method of Example 1, and add the remaining 40% kaolin and the softener particles mentioned above at the same time. The performance test results for Examples 1 to 3 and Comparative Examples 1 to 3 are shown in Table 1 below. Detergent Slurry Stability: Allow the slurry to stand at room temperature for 24 hours and observe for the presence of any precipitate. Softening temperature of detergent: Tested using the Vicat softening point test method with a load of 1 kg.

[0049] Hygroscopicity of detergent tablets: Take 100±1g of detergent tablets and place them in an environment with 37°C and 75±1% humidity for 24 hours. Weigh them before and after storage and calculate the weight gain. Weight gain = (weight after storage - weight before storage) / weight before storage x 100%. If the weight gain is between 5% and 10%, a low weight gain indicates poor moisture absorption, resulting in slow dispersion and dissolution during use. A high weight gain indicates excessive moisture absorption, leading to gradual absorption of moisture during storage and problems such as softening and adhesion.

[0050] Drying resistance of detergent tablets: Take 100±1g of detergent tablets and place them in an oven at 55±1°C for 24 hours. Weigh them before and after baking and calculate the weight loss rate. Weight loss rate = (weight before baking - weight after baking) / weight before baking x 100%. The weight loss rate must be ≦15%.

[0051] [Table 1]

[0052] From the data results in Table 1 above, it can be seen that the slurry preparation process of the present invention has good stability, a high softening temperature, and meets the weight gain and weight loss requirements. In Comparative Example 2, when no molding aid is added, the softening temperature is significantly lowered and the weight gain rate is also low, failing to meet the requirements. In Comparative Example 3, using the existing method, the weight gain rate also fails to meet the requirements. Example 4

[0053] The solid detergent contained, by weight, 10% BP-17, 20% AES surfactant (from Shandong Runyue Chemical Co., Ltd.), 5% alkyl (C12-16) glycoside, 10% cocoamidopropyl betaine, 2% polyether-modified polysiloxane of Example 2, 10% aminosilicone oil microemulsion (from Guangdong Tiansheng Environmental New Materials Technology Co., Ltd., TS-8378), 16% bentonite with an average particle size of 150 μm, 5% amylose, 0.5% polyquaternium-6, 0.6% hydroxypropyl methylcellulose, 2% disodium EDTA, 3% propylene glycol, and the remainder was deionized water.

[0054] Deionized water was added to the container, and BP-17 was added. The temperature was raised to 92°C and stirred to dissolve the solution. The solution was then cooled to room temperature, and the AES surfactant (C 12-16 ) Add alkyl glycoside and cocoamidopropyl betaine and stir to dissolve uniformly, then add hydroxypropyl methylcellulose, bentonite, and amylose and stir to disperse evenly, then add polyether-modified polysiloxane, aminosilicone oil microemulsion, polyquaternium-6, EDTA-disodium, and propylene glycol and stir to dissolve uniformly, and the resulting detergent slurry is dried and molded in a continuous infrared drying device, and then demolded and cut into small pieces to obtain tablet-shaped detergent. Example 5

[0055] The difference between Example 5 and Example 4 is that the AES surfactant in Example 4 was adjusted from 20% to 15%, and (C 12-16 ) The alkyl glycoside is adjusted from 5% to 10%. The remaining steps remain the same. Example 6

[0056] The difference between Example 6 and Example 4 is that the AES surfactant in Example 4 was adjusted from 20% to 10%, and (C 12-16 ) The alkyl glycosides are adjusted from 5% to 15%. The remaining steps remain the same. Example 7

[0057] The difference between Example 7 and Example 4 is that the polyether-modified polysiloxane in Example 4 is replaced with the same weight of quaternary ammonium type silicone oil (HANSA SQ2030D). The remaining steps are the same. Example 8

[0058] The difference between Comparative Example 8 and Example 4 is that the kaolin content of Example 4 is adjusted from 16% to 8%, and the amount of deionized water is increased accordingly. The remaining steps are the same. Example 9

[0059] The difference between Comparative Example 9 and Example 4 is that the amylose content of Example 4 is adjusted from 5% to 2%, and the amount of deionized water is increased accordingly. The remaining steps are the same. Comparative Example 4

[0060] The difference between Comparative Example 4 and Example 4 is that the AES surfactant in Example 4 is replaced with an equal weight of sodium dodecyl sulfate. The remaining steps are the same. Comparative Example 5

[0061] The difference between Comparative Example 5 and Example 4 is that in Example 4, bentonite and amylose were not added, and the amount of deionized water was increased accordingly. The remaining steps were the same. It was found that the cleaning composition had a very high hardness when pulverized, making it prone to cracking during pulverization. Comparative Example 6

[0062] The difference between Comparative Example 6 and Example 4 is that the bentonite in Example 4 is adjusted from 16% to 5%, the amylose is adjusted from 5% to 2%, and the amount of deionized water is increased accordingly. The remaining steps are the same. Comparative Example 7

[0063] The difference between Comparative Example 7 and Example 4 is that, according to the preparation method of Comparative Example 3, the amino silicone oil microemulsion of Example 4 is pre-coated with polyethylene glycol / polypropylene glycol copolymer and then added to 60% weight proportion of bentonite, and the remaining steps are the same. Comparative Example 8

[0064] The difference between Comparative Example 8 and Example 4 is that, according to the preparation method of Comparative Example 3, the amino silicone oil microemulsion of Example 4 is pre-coated with polyethylene glycol / polypropylene glycol copolymer, and then loaded into bentonite at 30% by weight, and the remaining steps are the same. The stability and softening temperature of the detergent slurries were tested as described above, and the results are shown in Table 2 below.

[0065] Table 2 [Table 2]

[0066] The data in Table 2 show that when sodium dodecyl sulfate is used as an anionic surfactant and other ingredients such as zwitterionic surfactants are included, the slurry still precipitates. Insufficient molding aids affect the softening temperature of the detergent tablets.

[0067] Detergency test: The test was conducted in accordance with the evaluation method of GB / T13174-2021 "Measurement of the detergency and cycle washing performance of laundry detergents" and in combination with the requirements of QB / T1224-2012 "Liquid laundry detergents". The national standard carbon black stain cloth (JB-01 stain cloth), the national standard protein stain cloth (JB-02 stain cloth), and the national standard sebum stain cloth (JB-03 stain cloth) were cut into 6cm x 6cm pieces and combined into 22 groups with similar average blackness for each type, and samples from each group were used to test the performance of the same sample.The national standard stain cloth and standard formulation liquid detergent were purchased from the National Institute of Chemical Industry.

[0068] Using a whiteness meter, the whiteness values ​​were read at 457 nm before and after washing. All detergent dosages were 0.2% by weight. Before washing, two points were taken on the front and back of the sample (two points on each side must be symmetrical about the center), and the whiteness values ​​were measured. The average of four measurements was taken as the whiteness F1 of the sample before washing. After washing, two points were taken on the front and back of the sample (two points on each side must be symmetrical about the center), and the average of four measurements was taken as the whiteness F2 of the sample after washing.

[0069] The whiteness difference (F2-F1) of each sample before and after washing was calculated using a one-to-one correspondence method, and the detergency was calculated separately for each sample group. According to the types of soiled fabric samples, the cleaning value R and cleaning ratio P of detergents for various types of soiled fabrics were determined, and the method is as follows:

[0070] Calculation of cleaning value of soiled cloth: cleaning value of a certain kind of soiled cloth Ri=Σ(F2i-F1i) / n; In the formula, i is the i-th type of soiled cloth sample, F1i is the spectral reflectance of the i-th type of soiled fabric sample before washing, %, F2i is the spectral reflectance of the i-th type of soiled fabric sample after washing, %, n is the effective content of each group of soiled fabric samples. The result is kept to one decimal place.

[0071] Calculation of cleaning value of soiled fabrics: cleaning ratio Pi=R3i / R0i for the i-th type of soiled fabric for standard liquid detergent In the formula, R0i is the cleaning value of the standard liquid detergent, %; R3i is the cleaning value of the sample being tested, %. The result is kept to one decimal place.

[0072] Judging the cleaning power of detergents: (1) If Pi≧1.0, the judgment result is that “the cleaning power of the sample on the i-th type of soiled fabric is equal to or greater than that of a standard liquid detergent,” which is abbreviated as “the cleaning power on the i-th type of soiled fabric is passed.” (2) If Pi<1.0, the judgment conclusion is “The cleaning power of the sample on the i-th type of soiled cloth is inferior to that of the standard liquid detergent,” which is abbreviated as “The cleaning power on the i-th type of soiled cloth fails.” The results are shown in Table 3 below.

[0073] Table 3 [Table 3]

[0074] The data in Table 3 show that the tablet detergent of the present invention has excellent washing and decontamination effects. Fabric conditioning antistatic test: Tested according to GB / T6801-2013. The test concentration of the tested detergent tablets was 10.0 g / L. The tested polyester fabric was purchased from the National Institute of Chemical Industry. The logarithmic difference meter of surface resistivity Δlgρs≧2.5 is acceptable. The results are shown in Table 4 below.

[0075] Table 4 [Table 4]

[0076] The data results in Table 4 show that the fabrics washed with the tablet-type detergent of the present invention have good antistatic properties, and that the tablet-type detergent of the present invention has a better antistatic effect on plants compared with Example 4, Comparative Example 7, and Comparative Example 8. This may be because the release, dispersion, and dissolution of the softener in Comparative Example 7 and Comparative Example 8 are affected after the softener is coated and added to the carrier, and the effect is not fully exerted. It should be noted that the specific examples are merely an interpretation of the present application and are not limitations on the present application. After reading this specification, a person skilled in the art may, if necessary, modify the examples without inventive step, provided that such modifications are within the scope of the claims of the present application and are protected by patent law.

Claims

1. A two-in-one solid detergent composition, based on 100% by weight of raw materials, comprising 10 to 30% (a) a molding agent, 10 to 50% (b) a surfactant, 5 to 20% (c) a softening agent, 10 to 30% (d) a molding aid, and optionally 0.1 to 1% (e) a softening conditioner, 0.1 to 1% (f) a molding stabilizer, 1 to 10% (g) a water softener, 1 to 10% (h) a soil dissolving agent, or 0.1 to 5% (i) a fragrance enhancer, with the remainder being deionized water; The surfactant contains an anionic surfactant and a nonionic surfactant, The structure of the anionic surfactant is R １ (EO) ｎ R ２ M, where n=1 to 15, and R １ is selected from a hydrocarbon group (C4-C20) or a substituted hydrocarbon group (C4-C20), and R ２ is selected from one or more combinations of sulfate, sulfonate, phosphate, and carboxylate ions; M is selected from alkali metal ions or ammonium ions; and EO is —CH ２ CH ２ A two-in-one solid detergent composition, characterized in that it represents O-.

2. 2. The two-in-one solid detergent composition according to claim 1, wherein the weight ratio of the anionic surfactant to the nonionic surfactant in the surfactant is from 1:9 to 9:

1.

3. 2. The two-in-one solid detergent composition of claim 1, wherein the surfactant also contains a zwitterionic surfactant, and the zwitterionic surfactant accounts for 10 to 40% by weight of the surfactant.

4. 2. The two-in-one solid detergent composition of claim 1, wherein the molding agent is selected from one or more combinations of polyvinyl alcohol, polyvinyl alcohol crosspolymer, polyvinylpyrrolidone, and vinyl acetate-vinyl alcohol copolymer.

5. 2. The two-in-one solid detergent composition of claim 1, wherein the softening agent is selected from one or more combinations of aminosilicone oil, aminosilicone oil emulsion, aminosilicone oil microemulsion, and cationic polysiloxane and emulsion thereof.

6. 2. The two-in-one solid detergent composition of claim 1, wherein the molding aid is selected from a combination of one or more of anhydrous sodium sulfate, starch, kaolin, attapulgite, bentonite, and silica.

7. 2. The two-in-one solid detergent composition of claim 1, wherein the softening conditioner is selected from cationic celluloses.

8. 2. The two-in-one solid detergent composition of claim 1, wherein the form stabilizer is selected from one or more combinations of hydroxyethyl cellulose, hydroxypropyl methylcellulose, gelatin, carrageenan, and polyanionic cellulose.

9. 2. The two-in-one solid detergent composition according to claim 1, wherein the soil dissolving agent is selected from polyols having a molecular weight of 150 or less.

10. A method for preparing the two-in-one solid detergent composition according to any one of claims 1 to 9, comprising: The method for preparing a two-in-one solid detergent composition comprises adding the deionized water to a container, adding and dissolving the molding agent, adding the surfactant, and stirring to dissolve uniformly, and then adding the remaining raw materials in order, stirring to disperse and dissolve uniformly, and drying the resulting detergent slurry, releasing it from the mold, and shaping it to obtain a solid detergent composition.

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