Two-in-one solid detergent composition and preparation method therefor

Abstract

A two-in-one solid detergent composition, comprising the following raw material components on a 100% weight basis: 10-30% of (a) a forming agent, 10-50% of (b) a surfactant, 5-20% of (c) a softener, 10-30% of (d) a forming aid, and optionally 0.1-1% of (e) a softening conditioner, 0.1-1% of (f) a formation stabilizer, 1-10% of (g) a water softener, 1-10% of (h) a stain solubilizer, or 0.1-5% of (i) a flavoring agent, the balance being deionized water. The solid detergent composition uses an anionic surfactant having ethoxy groups so as to prevent the anionic surfactant and a cationic softener from affecting each other's performance due to precipitate generation caused by attraction between positive and negative charges, and can exert a washing and softening two-in-one effect.

Description

Two-in-one solid detergent composition and preparation method thereof Technical Field

[0001] The present application relates to the technical field of detergent materials, and in particular, to a two-in-one solid detergent composition and a preparation method thereof. Background Art

[0002] Traditional detergents used to clean clothes and other fabrics are generally in liquid form. Due to their high water content and bulk, liquid detergents require a large amount of packaging materials, resulting in high transportation costs and the risk of leakage during storage and use. To address this problem, there are two main approaches. One is to concentrate the liquid detergent and coat it into granules, but this requires a costly coating film and is also complex to prepare. The other is to directly prepare the liquid detergent into a solid form, such as a tablet, granule, rod, tube, or other regular or irregular shape. When the solid detergent is added to a washing machine, such as a washing machine, it quickly decomposes and disperses and dissolves in water, achieving a cleaning effect.

[0003] Existing methods for preparing solid detergents face the following challenges: (1) compounding the liquid detergent ingredients and forming a stable solid, which is required to not soften or precipitate the raw materials at least at 60°C and have stable performance; (2) poor moisture absorption capacity, but can quickly decompose and disperse and dissolve in water, quickly exerting a washing effect; (3) at least have the same washing effect as liquid detergents, and no residue after rinsing; (4) when adding cationic softeners to solid detergents, it is necessary to avoid precipitation due to mutual adsorption of positive and negative charges with anionic surfactants in the detergent, thereby affecting their performance. Prior art Chinese invention patent application CN116194562A discloses a detergent tablet. To prevent the cationic softener added to the tablet from adsorbing and precipitating with anionic surfactants, which could affect performance, the softener is first coated with polyethylene glycol / polypropylene glycol, then loaded onto a carrier such as bentonite. Solid particles are then prepared using a drying method such as spray drying, and then combined with the remaining detergent ingredients to form a detergent tablet. This method increases the number of steps required in the tablet preparation process and requires additional drying equipment, such as spray drying, which prolongs the process and increases costs.

[0004] Therefore, it is necessary to further study the raw material selection and preparation method of two-in-one washing and softening detergent tablets to prepare detergent tablets with good effects and simple preparation methods.

[0005] Summary of the Invention

[0006] In order to solve the above technical problems, the present application provides a two-in-one solid detergent composition and a preparation method thereof.

[0007] This application adopts the following technical solutions:

[0008] A two-in-one solid detergent composition, comprising, by weight, 100% of the raw materials: 10-30% (a) a forming agent, 10-50% (b) a surfactant, 5-20% (c) a softener, 10-30% (d) a forming aid, and optionally 0.1-1% (e) a softening conditioner, 0.1-1% (f) a forming stabilizer, 1-10% (g) a water softener, 1-10% (h) a stain solubilizer, or 0.1-5% (i) a fragrance, with the balance being deionized water;

[0009] The surfactant comprises an anionic surfactant and a nonionic surfactant;

[0010] The structure of the anionic surfactant is R 1 (EO) n R 2 M, where n = 1-15, R 1 is selected from C4-C20 hydrocarbon group or C4-C20 substituted hydrocarbon group, R 2 is selected from one or more of sulfate ion, sulfonate ion, phosphate ion and carboxylate ion, M is selected from alkali metal ion or ammonium ion, and EO represents -CH2CH2O-.

[0011] Preferably, the weight ratio of the anionic surfactant to the nonionic surfactant in the surfactant is 1:9-9:1.

[0012] Preferably, the surfactant further contains a zwitterionic surfactant, and the weight proportion of the zwitterionic surfactant in the surfactant is 10-40%.

[0013] Preferably, the molding agent is selected from one or a combination of polyvinyl alcohol, polyvinyl alcohol cross-linked polymer, polyvinyl pyrrolidone and vinyl acetate-vinyl alcohol copolymer.

[0014] Preferably, the softener is selected from one or a combination of amino silicone oil, amino silicone oil emulsion, amino silicone oil microemulsion, cationic polysiloxane and emulsions thereof.

[0015] Preferably, the molding aid is selected from one or a combination of anhydrous sodium sulfate, starch, kaolin, attapulgite, bentonite and silicon dioxide.

[0016] Preferably, the softening conditioner is selected from cationic cellulose.

[0017] Preferably, the molding stabilizer is selected from one or a combination of hydroxyethyl cellulose, hydroxypropyl methyl cellulose, gelatin, carrageenan and polyanionic cellulose.

[0018] Preferably, the stain solubilizing agent is selected from polyols with a molecular weight not exceeding 150.

[0019] The preparation method of the two-in-one solid detergent composition described in any of the above technical solutions,

[0020] The deionized water is added into a container, the forming agent is added and dissolved, the surfactant is added and stirred and dissolved evenly, and then the remaining raw material components are added in sequence, stirred and dispersed, and dissolved evenly. The obtained detergent slurry is dried, formed, demolded, and formed.

[0021] In summary, this application has the following beneficial effects:

[0022] 1. The anionic surfactant used in the two-in-one solid detergent composition of the present application contains a polyoxyethylene ether chain segment. It has been found that after this anionic surfactant is mixed with the cationic softener selected in the present application, no precipitation will be produced due to charge adsorption, thereby affecting their performance. Therefore, there is no need to pre-coat the softener and load it on a carrier, and the preparation method is simpler.

[0023] 2. The two-in-one solid detergent composition of the present application has good washing effect. The washed fabrics have good antistatic effect and good softness. Moreover, when mixed with other detergents, it can still maintain good washing effect and good antistatic effect.

[0024] 3. The two-in-one solid detergent composition of the present application has good storage stability, a softening temperature exceeding 60° C., and both dryness resistance and moisture resistance meet the requirements. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below.

[0026] Throughout this specification, unless otherwise specified, the terms used herein should be understood as having the same meaning as commonly used in the art. Therefore, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In the event of any conflict, the present specification shall take precedence.

[0027] On the one hand, the present application proposes a two-in-one solid detergent composition, the raw material components of which are 100% by weight and include: 10-30% (a) a forming agent, 10-50% (b) a surfactant, 5-20% (c) a softener, 10-30% (d) a forming aid, and optionally 0.1-1% (e) a softening conditioner, 0.1-1% (f) a forming stabilizer, 1-10% (g) a water softener, 1-10% (h) a stain solubilizer or 0.1-5% (i) a fragrance, and the balance is deionized water.

[0028] (a) Molding agent

[0029] The forming agent plays a shaping role in the solid detergent composition and has good water solubility. It can be selected from one or more combinations of polyvinyl alcohol, polyvinyl alcohol cross-linked polymer, polyvinyl pyrrolidone and vinyl acetate-vinyl alcohol copolymer. Taking polyvinyl alcohol PVA as an example, the alcoholysis degree of the PVA of the present application is 86%-89%, and can be a low degree of polymerization (number average molecular weight 20,000-100,000), a medium degree of polymerization (number average molecular weight 120,000-150,000), a high degree of polymerization (number average molecular weight 170,000-220,000) or an ultra-high polymer (number average molecular weight 250,000-300,000). For example, PVA can be BP-05, BP-17, PVA17-88, etc. Taking polyvinyl pyrrolidone PVP as an example, it can be PVP K30, PVP K60, PVP K90, etc.

[0030] In the present application, further, the weight proportion of the forming agent in the detergent can be 10-25%. For example, it can be any value among 10%, 12%, 14%, 15%, 16%, 18%, 20%, 22%, 24%, 25%, etc.

[0031] (b) Surfactants

[0032] Surfactants are the main components of detergents that play a role in washing. In this application, surfactants include anionic surfactants and nonionic surfactants, and the weight ratio of anionic surfactants and nonionic surfactants can be 1:9-9:1; wherein the structure of the anionic surfactant is R 1 (EO) n R 2 M, where n = 1-15, R 1 is selected from C4-C20 hydrocarbon group or C4-C20 substituted hydrocarbon group, R 2 is selected from one or more of sulfate ion, sulfonate ion, phosphate ion and carboxylate ion, M is selected from alkali metal ion or ammonium ion, EO represents -CH2CH2O-. For example, the anionic surfactant can be C 12 H 25 (EO)3OSO3Na、C8H17 (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 examples thereof include alkyl glucoside, maltoside, alcohol ether glycoside, fatty alcohol polyoxyethylene ether AEO-3, AEO-7, AEO-9, AEO-12, alkanolamide, isomeric decanol polyoxyethylene ether, isomeric tridecanol polyoxyethylene ether, secondary alcohol polyoxyethylene ether, EO-PO block polyoxyethylene ether, and fatty acid oil ethoxylate.

[0033] The combination of anionic surfactants and nonionic surfactants can achieve excellent cleaning and decontamination effects. In the present application, since the two-in-one solid detergent composition for washing and softening contains a softener, which is generally cationic, it is prone to anionic and cationic adsorption with the anionic surfactant, affecting water solubility and resulting in precipitation, which affects the product stability, washing, and softening effects of the detergent. The applicant has discovered that the use of anionic surfactants containing ethoxy groups, when mixed with the softener, does not produce precipitation and does not affect the washing and softening effects of the detergent composition.

[0034] In the present application, the weight of the anionic surfactant and the nonionic surfactant and their proportion in the weight of the surfactant are not particularly limited, but generally more than 60% is more preferred. In addition, the weight ratio of the anionic surfactant to the nonionic surfactant in the surfactant can be further 6:1-1:3. For example, the weight ratio can be any value of 6:1, 5:1, 4:1, 3:1, 2:1, 1:1, 1:2, 1:3, etc.

[0035] In the present application, the surfactant may also contain a zwitterionic surfactant, which has relatively low toxicity and irritation, good wettability and foaming properties, and certain bactericidal and antifungal properties. It can be compounded with anionic surfactants and / or nonionic surfactants to produce additivity. The zwitterionic surfactant may be selected from betaine type, amine oxide type or imidazoline type, or a combination of two or more thereof, for example, cocamidopropyl betaine, lauroylamidopropyl betaine, cocamidopropyl hydroxysulfobetaine, cocamidopropylamine oxide, lauroylamidopropylamine oxide, cocoamphodiacetate disodium, lauroamphodiacetate disodium, etc. The weight proportion of the zwitterionic surfactant in the surfactant is 10-40%. For example, the weight proportion can be any value of 10%, 12%, 15%, 18%, 20%, 22%, 25%, 27%, 30%, 32%, 35%, 37%, 40%, etc.

[0036] In the present application, further, the weight proportion of the surfactant in the detergent can be 20-40%. For example, it can be any value among 20%, 22%, 24%, 25%, 26%, 28%, 30%, 32%, 33%, 35%, 37%, 38%, 40%, etc.

[0037] (c) Softener

[0038] Adding softening agent in the detergent composition of the present application can improve the softness, smoothness and antistatic properties of fabric, making it more comfortable to wear. Concretely, softening agent can be selected from one or more combinations in aminosilicone oil, aminosilicone oil emulsion, aminosilicone oil microemulsion and cationic polysiloxane and emulsion thereof. Aminosilicone oil emulsion and aminosilicone oil microemulsion are generally acidic, and amino group is positively charged, which can improve the stability of emulsion or microemulsion like this. Cationic polysiloxane generally refers to quaternary ammonium salt type organosilicon, i.e. contains quaternary ammonium salt group in the side chain structure of polysiloxane molecule. The softener can also be compounded with two or more different softeners, especially one of which is cationic (such as amino silicone oil emulsion, amino silicone oil microemulsion, quaternary ammonium salt type silicone emulsion, etc.), to synergistically exert its efficacy and improve the effect. For example, the softener can be a compound of polyether modified polysiloxane and amino silicone oil emulsion at a weight ratio of 1:2-10, a compound of polyether modified polysiloxane and amino silicone oil microemulsion at a weight ratio of 1:2-10, a compound of polyether modified polysiloxane and quaternary ammonium salt type silicone emulsion at a weight ratio of 1:2-10, an amino silicone oil emulsion and quaternary ammonium salt type silicone emulsion at a weight ratio of 5:1-1:5, etc.

[0039] In the present application, further, the weight proportion of the softener in the detergent can be 8-17%. For example, it can be any value among 8%, 9%, 10%, 11%, 12%, 13%, 14%, 15%, 16%, 17%, etc.

[0040] (d) Molding aids

[0041] In the present application, the addition of a forming aid can further improve the stability of the solid detergent composition, particularly ensuring that the hygroscopicity and dryness resistance meet the requirements and the softening temperature is higher. The forming aid can be selected from one or a combination of anhydrous sodium sulfate, starch, kaolin, attapulgite, bentonite, and silica. The average particle size of the forming aid is not particularly limited and can be 1 μm to 1 mm.

[0042] In the present application, further, the weight proportion of the forming aid in the detergent can be 10-23%. For example, it can be any value among 10%, 11%, 12%, 13%, 14%, 15%, 16%, 17%, 18%, 19%, 20%, 21%, 22%, 23%, etc.

[0043] (e) Softening conditioner

[0044] The softening agent can further improve the softening and conditioning effect. In the present application, the softening agent can be selected from cationic cellulose, for example, one or a combination of two or more of polyquaternium-6, polyquaternium-7, polyquaternium-10, polyquaternium-39 and polyquaternium-67. Specifically, the weight proportion of the softening agent in the detergent can be any value of 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, 1%, etc.

[0045] (f) Molding stabilizer

[0046] A molding stabilizer can be used in combination with a molding agent to further improve the molding effect and heat resistance, and the softening temperature of the solid detergent composition can be higher. The molding stabilizer can be selected from one or a combination of hydroxyethyl cellulose, hydroxypropyl methyl cellulose, gelatin, carrageenan, and polyanionic cellulose. Specifically, the weight proportion of the molding stabilizer in the detergent can be any value of 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, 1%, etc.

[0047] (g) Water softener

[0048] Water softeners are mainly used to complex or remove Mg in water 2+ , Ca 2+ 、Al 3+Water softeners can remove metal ions such as glutamic acid and sodium phosphate, reduce water hardness, and prevent these metal ions from interacting with nonionic surfactants and affecting the washing and cleaning effect. For example, water softeners are generally metal ion complexing agents, which can be one or a combination of tetrasodium dicarboxymethyl glutamate, disodium edetate, sodium gluconate, trisodium dicarboxymethyl alanine, sodium hexametaphosphate, and sodium citrate. Specifically, the weight proportion of water softeners in detergents can be any value such as 1%, 2%, 3%, 4%, 5%, 6%, 7%, 8%, 9%, 10%, etc.

[0049] (h) Stain solubilizer

[0050] The stain solubilizing agent can improve the solubilizing effect on oil stains, and improve the stain removal ability and effect. In the present application, the stain solubilizing agent is selected from a polyol with a molecular weight not exceeding 150. For example, it can be one or a combination of glycerol, 1,3-propylene glycol, dipropylene glycol, diethylene glycol, 1,4-butanediol, pentanediol and isohexanediol. Specifically, the weight proportion of the stain solubilizing agent in the detergent can be any value such as 1%, 2%, 3%, 4%, 5%, 6%, 7%, 8%, 9%, 10%, etc.

[0051] (i) Flavoring agents

[0052] Fragrance enhancers primarily impart a pleasant fragrance to fabrics. These can be either directly applied fragrances or microencapsulated fragrances. Furthermore, the weight percentage of fragrance enhancers in the detergent can range from 0.1% to 2%. For example, the weight percentage can be any of 0.1%, 0.3%, 0.5%, 0.7%, 0.8%, 1%, 1.2%, 1.2%, 1.3%, 1.5%, 1.6%, 1.8%, 2%, and the like.

[0053] On the other hand, the present application proposes a method for preparing the two-in-one solid detergent composition described in any of the above technical solutions.

[0054] Deionized water is added into a container, a forming agent is added and dissolved, a surfactant is added and stirred to dissolve evenly, and then the remaining raw material components are added in sequence, stirred to disperse and dissolve evenly, and the obtained detergent slurry is dried, formed, demolded, and shaped to obtain the product.

[0055] In the preparation method of the above two-in-one solid detergent composition, the shaping stabilizer and the softening conditioner can also be pre-dissolved in part of deionized water to form a solution, which is then added to the container for stirring and dissolution.

[0056] The technical solution of the present application is described in detail below with reference to embodiments and comparative examples.

[0057] Example 1

[0058] The solid detergent is composed of 22% BP-05, 24% AES surfactant (from Zanyu Technology Group Co., Ltd.), 6% AEO-9, 12% amino silicone oil emulsion (from Green Union (Jining) Chemical Technology Co., Ltd.), 18% kaolin with an average particle size of 100 μm, and the balance is deionized water.

[0059] Deionized water was added to a container, BP-05 was added, the temperature was raised to 90°C and stirred to dissolve, the temperature was lowered to room temperature, AES surfactant and AEO-9 were added, the mixture was stirred to dissolve evenly, kaolin was added, the mixture was stirred to disperse evenly, amino silicone oil emulsion was added, the mixture was stirred to dissolve evenly, the obtained detergent slurry was dried, formed, demolded, and sliced ​​in a continuous infrared drying equipment to obtain detergent tablets.

[0060] Example 2

[0061] The difference between Example 2 and Example 1 is that in Example 1, the 12% amino silicone oil emulsion is replaced by a combination of 3% polyether-modified polysiloxane (from Jinan Shanhai Chemical Technology Co., Ltd.) and 9% amino silicone oil emulsion. The remaining steps remain unchanged.

[0062] Example 3

[0063] The difference between Example 3 and Example 1 is that in Example 1, the solid detergent composition further contains 0.5% hydroxyethyl cellulose, and the amount of deionized water is reduced by 0.5% accordingly. The remaining steps remain unchanged.

[0064] Comparative Example 1

[0065] The difference between Comparative Example 1 and Example 1 is that in Example 1, the AES surfactant is replaced with an equal weight percentage of sodium lauryl sulfate. The remaining steps remain unchanged.

[0066] Comparative Example 2

[0067] Comparative Example 2 differs from Example 1 in that, in Example 1, no kaolin was added, and the amount of deionized water was increased by 18%. The remaining steps remained unchanged. The detergent composition was found to be very hard during slicing, and it broke easily during slicing.

[0068] Comparative Example 3

[0069] The raw material components of Example 1 were used. According to the prior art CN116194562A, amino silicone oil was first coated with polyethylene glycol / polypropylene glycol copolymer and then loaded on kaolin.

[0070] Polyethylene glycol / polypropylene glycol (average molecular weight 2000, EO 70%, PO 30%) with an equal weight to the amino silicone oil microemulsion is put into a container and heated until melted. The amino silicone oil emulsion and 60% kaolin are added, stirred and mixed evenly, and softener particles are formed by spray drying.

[0071] Prepare according to the preparation method of Example 1, and add the remaining 40% kaolin and the above softener particles at the same time.

[0072] The performance test results of Examples 1-3 and Comparative Examples 1-3 are shown in Table 1 below.

[0073] Detergent slurry stability: Place the slurry at room temperature for 24 hours and observe whether precipitation occurs.

[0074] Softening temperature of detergent tablets: tested using the Vicat softening point test method with a load of 1 kg.

[0075] Hygroscopicity of detergent tablets: Place 100±1g of detergent tablets in an environment at 37°C and 75±1% humidity for 24 hours. Weigh the tablets before and after storage and calculate the weight gain. Weight gain = (weight after storage - weight before storage) / weight before storage × 100%. The weight gain should be between 5% and 10%. A lower weight gain indicates poor water absorption, resulting in slow dispersion and dissolution. A higher weight gain indicates excessive water absorption, leading to softening and sticking during storage.

[0076] Drying resistance of detergent tablets: Place 100±1g of detergent tablets in a 55±1°C oven for 24 hours. Weigh the tablets before and after baking and calculate the weight loss. Weight loss = (weight before baking - weight after baking) / weight before baking × 100%. The weight loss requirement is ≤ 15%.

[0077] Table 1

[0078] As shown in Table 1, the two-in-one laundry tablets of the present invention exhibit good slurry stability and a high softening temperature during preparation, while both the weight gain and weight loss rates meet the requirements. In Comparative Example 2, when no forming aid is added, the softening temperature decreases significantly and the weight gain is also low, not meeting the requirements. In Comparative Example 3, the weight gain also does not meet the requirements when the conventional method is used.

[0079] Example 4

[0080] The solid detergent is composed of 10% BP-17, 20% AES surfactant (from Shandong Runyue Chemical Co., Ltd.), 5% C 12-16Alkyl glucoside, 10% cocoamidopropyl betaine, 2% polyether-modified polysiloxane in Example 2, 10% amino silicone oil microemulsion (from Guangdong Tiansheng Environmental Protection New Material 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% EDTA-disodium, 3% propylene glycol, and the balance is deionized water.

[0081] Add deionized water to the container, add BP-17, heat to 92℃ and stir to dissolve, cool to room temperature, add AES surfactant, C 12-16 Alkyl glucoside and cocamidopropyl betaine are stirred and dissolved evenly, and then hydroxypropyl methylcellulose, bentonite and amylose are added and dispersed evenly, and then polyether modified polysiloxane, amino silicone oil microemulsion, polyquaternium-6, EDTA-disodium and propylene glycol are added and stirred and dissolved evenly. The obtained detergent slurry is dried, formed, demolded and sliced ​​in a continuous infrared drying equipment to obtain detergent tablets.

[0082] Example 5

[0083] The difference between Example 5 and Example 4 is that in Example 4, the AES surfactant is adjusted from 20% to 15%, and C 12-16 The amount of alkyl glycoside was adjusted from 5% to 10%, and the remaining steps remained unchanged.

[0084] Example 6

[0085] The difference between Example 6 and Example 4 is that in Example 4, the AES surfactant is adjusted from 20% to 10%, and C 12-16 The amount of alkyl glycoside was adjusted from 5% to 15%, and the remaining steps remained unchanged.

[0086] Example 7

[0087] The difference between Example 7 and Example 4 is that in Example 4, the polyether-modified polysiloxane is replaced by an equal weight of quaternary ammonium silicone oil (HANSA SQ2030D), while the remaining steps remain unchanged.

[0088] Example 8

[0089] The difference between Example 8 and Example 4 is that in Example 4, the bentonite content is adjusted from 16% to 8%, and the amount of deionized water is increased accordingly. The remaining steps remain unchanged.

[0090] Example 9

[0091] The difference between Example 9 and Example 4 is that in Example 4, the amylose content was adjusted from 5% to 2%, and the amount of deionized water was increased accordingly. The remaining steps remained unchanged.

[0092] Comparative Example 4

[0093] The difference between Comparative Example 4 and Example 4 is that in Example 4, the AES surfactant is replaced by an equal weight of sodium lauryl sulfate. The remaining steps remain unchanged.

[0094] Comparative Example 5

[0095] Comparative Example 5 differs from Example 4 in that, in Example 4, bentonite and amylose were omitted, and the amount of deionized water was increased accordingly. The remaining steps remained unchanged. During slicing, the detergent composition was found to be very hard and easily fractured.

[0096] Comparative Example 6

[0097] The difference between Comparative Example 6 and Example 4 is that in Example 4, the bentonite content was adjusted from 16% to 5%, the amylose content was adjusted from 5% to 2%, and the amount of deionized water was increased accordingly. The remaining steps remained unchanged.

[0098] Comparative Example 7

[0099] 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 in Example 4 was pre-coated with polyethylene glycol / polypropylene glycol copolymer and then loaded on 60% by weight bentonite. The remaining steps remained unchanged.

[0100] Comparative Example 8

[0101] 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 in Example 4 was pre-coated with polyethylene glycol / polypropylene glycol copolymer and then loaded on 30% by weight of bentonite. The remaining steps remained unchanged.

[0102] The detergent slurry stability and softening temperature were tested as described above. The results are shown in Table 2 below.

[0103] Table 2

[0104] The data in Table 2 show that even with other raw materials such as zwitterionic surfactants, the slurry still precipitates when sodium lauryl sulfate is used as the anionic surfactant. If the amount of forming aid is insufficient, the softening temperature of the detergent tablet will be affected.

[0105] Detergency test: The test is conducted in accordance with the method of GB / T 13174-2021 "Determination of detergency and washing cycle performance of detergents for clothing" and combined with the requirements of QB / T 1224-2012 "Liquid detergents for clothing".

[0106] National standard carbon black stained cloth (JB-01), national standard protein stained cloth (JB-02), and national standard sebum stained cloth (JB-03) were cut into 6 cm × 6 cm pieces and matched into 22 groups of similar average blackness. Each group of test pieces was used for performance testing of the same sample. National standard stained cloth and standard formula laundry detergent were purchased from the National Daily Chemical Industry Research Institute.

[0107] Whiteness values ​​were read individually before and after washing using a whiteness meter at 457 nm. The detergent concentration was always 0.2% by weight. The whiteness before washing was measured at two points on each side of the test piece (the two points on each side should be symmetrical), and the average of these four measurements was the whiteness before washing (F1). The whiteness after washing was measured at two points on each side of the test piece (the two points on each side should be symmetrical), and the average of these four measurements was the whiteness after washing (F2).

[0108] Calculate the whiteness difference (F2 - F1) before and after washing for each test piece on a one-to-one basis. Detergent performance is then calculated for each set of test pieces. Calculate the detergent's cleaning value (R) and cleaning ratio (P) for each type of soiled fabric using the following method:

[0109] Calculation of the decontamination value of a dirty cloth: the decontamination value of a certain dirty cloth Ri = Σ(F2i-F1i) / n;

[0110] Where:

[0111] i——the i-th type of soiled cloth test piece;

[0112] F1i——spectral reflectance of the i-th type of dirty cloth specimen before washing, %;

[0113] F2i——spectral reflectance of the i-type soiled cloth specimen after washing, %;

[0114] n——effective content of each set of dirty cloth test pieces.

[0115] The result is rounded to one decimal place.

[0116] Calculation of the soiling ratio of dirty cloth: the soiling ratio of the relative standard laundry detergent on the i-th type of dirty cloth Pi = R3i / R0i;

[0117] Where: R0i - the decontamination value of the standard laundry detergent, %; R3i - the decontamination value of the sample to be tested, %.

[0118] The result is rounded to one decimal place.

[0119] Determination of detergent detergency:

[0120] (1) When Pi ≥ 1.0, the conclusion is "the sample's detergency for the i-th type of dirty cloth is equivalent to or better than that of the standard laundry detergent", referred to as "the detergency for the i-th type of dirty cloth is qualified";

[0121] (2) When Pi is less than 1.0, the conclusion is that "the sample's cleaning power for the i-th type of dirty cloth is inferior to that of the standard laundry detergent", which is referred to as "the cleaning power for the i-th type of dirty cloth is unqualified".

[0122] The results are shown in Table 3 below.

[0123] Table 3

[0124] It can be seen from the data in Table 3 that the laundry tablet of the present application has a good washing and decontamination effect.

[0125] Fabric Conditioning Antistatic Test: Tested according to GB / T6801-2013. The test concentration of the laundry tablets was 10.0 g / L. The test polyester fabric was purchased from the National Research Institute of Daily Chemical Industry.

[0126] The surface resistivity logarithm difference Δlgρs≥2.5 was considered acceptable. The results are shown in Table 4 below.

[0127] Table 4

[0128] From the data results in Table 4, it can be seen that the fabric washed with the detergent tablet of the present application has good antistatic properties, and compared with Example 4, Comparative Example 7 and Comparative Example 8, it can be seen that the detergent tablet of the present application has a better antistatic effect on plants. It may be that the softener in Comparative Examples 7 and 8 is coated and loaded on the carrier, which affects the release, dispersion and solvent of the softener, resulting in the softener's effect not being fully exerted.

[0129] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but as long as they are within the scope of the claims of the present application, they are protected by the patent law.

Claims

1. A two-in-one solid detergent composition, characterized in that, The raw material components, by 100% weight, include: 10-30% (a) forming agent, 10-50% (b) surfactant, 5-20% (c) softener, 10-30% (d) forming aid, and optionally 0.1-1% (e) softening conditioner, 0.1-1% (f) forming stabilizer, 1-10% (g) water softener, 1-10% (h) stain solubilizer or 0.1-5% (i) flavor enhancer, with the balance being deionized water; The surfactant includes an anionic surfactant and a nonionic surfactant; The structure of the anionic surfactant is R 1 (EO) n R 2 M, where n = 1 - 15, R 1 is selected from C4 - C20 hydrocarbon groups or C4 - C20 substituted hydrocarbon groups, R 2 is selected from one or a combination of sulfate ions, sulfonate ions, phosphate ions, and carboxylate ions, M is selected from alkali metal ions or ammonium ions, and EO represents -CH2CH2O-.

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

1.

3. The solid detergent composition according to claim 1, characterized in that, The surfactant also contains an amphoteric ion surfactant, and the weight proportion of the amphoteric ion surfactant in the surfactant is 10-40%.

4. The solid detergent composition according to claim 1, characterized in that, The forming agent is selected from one or a combination of several of polyvinyl alcohol, cross-linked polyvinyl alcohol polymer, polyvinylpyrrolidone, and vinyl acetate-vinyl alcohol copolymer.

5. The solid detergent composition according to claim 1, characterized in that, The softener is selected from one or a combination of several of amino silicone oil, amino silicone oil emulsion, amino silicone oil microemulsion, and cationic polysiloxane and its emulsion.

6. The solid detergent composition according to claim 1, characterized in that, The forming aid is selected from one or a combination of several of anhydrous sodium sulfate, starch, kaolin, attapulgite, bentonite, and silica.

7. The solid detergent composition according to claim 1, wherein The softening conditioner is selected from cationic cellulose.

8. The solid detergent composition according to claim 1, wherein The forming stabilizer is selected from one or a combination of several of hydroxyethyl cellulose, hydroxypropyl methyl cellulose, gelatin, carrageenan, and polyanionic cellulose.

9. The solid detergent composition according to claim 1, characterized in that, The stain solubilizer is selected from polyhydric alcohols with a molecular weight not exceeding 150.

10. The preparation method of the two-in-one solid detergent composition according to any one of claims 1-9, characterized in that The deionized water is added to a container, the forming agent is added and dissolved, the surfactant is added and stirred until dissolved uniformly, and then the remaining raw material components are added in sequence, stirred, dispersed, and dissolved uniformly. The obtained detergent slurry is subjected to drying, forming, demolding, and shaping to obtain the product.

Images