Detergent tablets

Abstract

The present application relates to the technical field of detergents, and in particular to tablet-type detergents. The detergent contains 8 to 34 parts by weight of a water-soluble polymer, 14 to 50 parts by weight of a surfactant, 0.1 to 50 parts by weight of an enzyme preparation, 0.1 to 50 parts by weight of a fabric softener preparation, 1 to 10 parts by weight of a foam booster preparation, and 0 to 30 parts by weight of a molding aid. The enzyme preparation and fabric softener preparation are embedded in the tablet-type detergent in the form of solid particles. The tablet-type detergent of the present application has a high content of the enzyme preparation and the fabric softener preparation, and has obvious advantages in cleaning power and static electricity removal ability. Due to the high enzyme content, it has excellent cleaning effect on proteins, milk scum, and bloodstains that are difficult to remove in daily life, and can be used not only for clothes but also for washing dishes in a dishwasher.

Description

[Technical Field]

[0001] The present application relates to the technical field of detergents, and in particular to detergent tablets. [Background technology]

[0002] Solid detergent tablets (detergent tablets) are increasingly favored by young consumers and those traveling on business due to their advantages of high concentration, effective active ingredient content, and ease of storage, transportation, and portability. Despite these advantages, detergent tablets lack the ideal cleaning power, which is a major concern for consumers, especially when it comes to stains that are difficult to remove in daily life, such as protein and milk dregs. Because water evaporates during the drying process, detergent tablets have a very low moisture content, resulting in almost no moisture. While these products are highly concentrated and portable, the high temperatures encountered during the drying process can deactivate the active ingredients in specialized enzyme preparations, significantly weakening their cleaning ability and causing a loss of their original cleaning performance, making them unable to remove difficult-to-remove protein and milk dregs in daily life.

[0003] Furthermore, when adding liquid enzyme preparations to detergent tablets by spraying or smearing, the liquid enzyme preparation itself contains a large amount of water and organic solvents. Adding too much liquid enzyme preparation can not only dissolve the highly water-soluble detergent tablets themselves, but also make the detergent tablets sticky and soft, resulting in poor storage stability. Furthermore, in detergent tablets containing liquid enzyme preparations, the enzyme preparation is exposed to air and is easily affected by ambient temperature and humidity, such as high temperature and humidity. Hyperacidic and hyperalkaline environments also easily inactivate enzyme-containing preparations. Therefore, current enzyme-containing detergent tablets have poor stability and are difficult to demonstrate high detergency, leaving room for improvement.

[0004] Furthermore, existing detergent tablets do not contain fabric softeners, making laundry more complicated and cumbersome. When cationic fabric softeners are directly added to detergents, they can sometimes be in contact with anionic surfactants in the detergent for long periods of time, resulting in the mutual adsorption of different charges and the formation of precipitates. Because this reduces the functionality of both, no detergent tablets incorporating fabric softeners yet retain their cleaning and de-static properties have been developed in the prior art. Summary of the Invention

[0005] In view of this, the present application provides a detergent tablet and a method for preparing the same. The detergent tablet of the present invention has a large amount of an enzyme preparation embedded therein, ensuring the stability of the enzyme preparation. At the same time, the detergent tablet of the present invention has a fabric softener component embedded therein, making the effects of the fabric softener and the detergent component less susceptible to precipitation caused by mutual adsorption.

[0006] This application provides the following technical solutions: In a first aspect, the present invention provides a detergent tablet comprising: 8 to 34 parts by weight of a water-soluble polymer; 14 to 50 parts by weight of a surfactant; 0.1 to 50 parts by weight of an enzyme preparation; 0.1 to 50 parts by weight of a fabric softener formulation; 1 to 10 parts by weight of a foam booster formulation; and 0 to 30 parts by weight of a molding aid, The enzyme formulation and fabric softener formulation are embedded in the form of solid particles onto a detergent tablet.

[0007] In some embodiments, the amount of water-soluble polymer in the detergent tablet is preferably 9 to 33 parts by weight, 10 to 32 parts by weight, 11 to 31 parts by weight, 12 to 30 parts by weight, 13 to 29 parts by weight, 14 to 28 parts by weight, 15 to 27 parts by weight, 16 to 26 parts by weight, 17 to 25 parts by weight, 18 to 24 parts by weight, 19 to 23 parts by weight, 20 to 22 parts by weight, or 21 parts by weight, including any value and range therebetween.

[0008] In some embodiments, the amount of surfactant in the detergent tablet is preferably 16 to 48 parts by weight, 18 to 46 parts by weight, 20 to 44 parts by weight, 22 to 42 parts by weight, 24 to 40 parts by weight, 26 to 38 parts by weight, 28 to 36 parts by weight, 30 to 34 parts by weight, or 32 to 33 parts by weight, including any value and range therebetween.

[0009] In some embodiments, the amount of enzyme formulation in the detergent tablet is preferably 0.5 to 50 parts by weight, 1 to 50 parts by weight, 2 to 48 parts by weight, 4 to 46 parts by weight, 6 to 44 parts by weight, 8 to 42 parts by weight, 10 to 40 parts by weight, 12 to 38 parts by weight, 14 to 36 parts by weight, 16 to 34 parts by weight, 18 to 32 parts by weight, 20 to 30 parts by weight, 22 to 28 parts by weight, 24 to 26 parts by weight, including any value and range therebetween.

[0010] In some embodiments, the amount of fabric softener formulation in the detergent tablet is preferably 0.5 to 50 parts by weight, 1 to 50 parts by weight, 2 to 48 parts by weight, 4 to 46 parts by weight, 6 to 44 parts by weight, 8 to 42 parts by weight, 10 to 40 parts by weight, 12 to 38 parts by weight, 14 to 36 parts by weight, 16 to 34 parts by weight, 18 to 32 parts by weight, 20 to 30 parts by weight, 22 to 28 parts by weight, 24 to 26 parts by weight, including any value and range therebetween.

[0011] In some embodiments, the amount of foam booster formulation in the detergent tablet is preferably 2 to 9 parts by weight, 3 to 8 parts by weight, 4 to 6 parts by weight, or 5 parts by weight, including any value and range therebetween.

[0012] In some embodiments, the amount of molding aid in the detergent tablet is preferably 1 to 28 parts by weight, 3 to 26 parts by weight, 5 to 24 parts by weight, 7 to 22 parts by weight, 9 to 20 parts by weight, 11 to 18 parts by weight, 13 to 16 parts by weight, or 14 to 15 parts by weight, including any value and range therebetween.

[0013] In some embodiments, the water-soluble polymer is one or more selected from polyvinyl alcohol, polyvinylpyrrolidone, gelatin, carrageenan, cross-linked polyacrylic acid, water-soluble polyacrylamide, polymers of vinyl acetate and vinyl alcohol, starch, dextrin, polysaccharides, cellulose, modified cellulose, and microcrystalline cellulose.

[0014] In some embodiments, the water-soluble polymer comprises polyvinyl alcohol (PVA), polyvinylpyrrolidone (PVP), hydroxypropylmethylcellulose (HPMC), and / or hydroxyethylcellulose (HEC).

[0015] In some embodiments, the polyvinyl alcohol may be unmodified or modified, e.g., carboxylated or sulfonated, or may be a copolymer of vinyl alcohol or vinyl ester monomers with one or more other monomers. Preferably, the PVA is partially or fully alcoholized or hydrolyzed. For example, the PVA may be about 40 to 100%, preferably about 50 to about 95%, and preferably about 80 to about 92% alcoholized or hydrolyzed. The degree of hydrolysis is known to affect the temperature at which the PVA begins to dissolve in water; for example, 88% hydrolysis corresponds to a PVA solution that is soluble in cold water (i.e., room temperature), while 90% or greater hydrolysis corresponds to a PVA solution that is soluble in warm water (hot water). The average molecular weight (MW) of polyvinyl alcohol is 20,000 to 120,000, and the average degree of polymerization (DP) is 500 to 2,500, but the average molecular weight (MW) of polyvinyl alcohol is more preferably 25,000 to 100,000, and the average degree of polymerization (DP) is 550 to 2,000.

[0016] In some embodiments, the polyvinylpyrrolidone (PVP) may be prepared by bulk polymerization or solution polymerization using the monomer vinylpyrrolidone. It may be in the form of a homopolymer, copolymer, or crosslinked polymer, and may be nonionic, cationic, or anionic. Preferably, it is either nonionic or anionic, or a combination thereof. In the present application, nonionic polyvinylpyrrolidone is more preferred. A composite of nonionic polyvinylpyrrolidone and PVA having an average molecular weight of 5,000 to 1,000,000 and a K value of 15 to 90 is preferred, while a composite of nonionic polyvinylpyrrolidone and PVA having an average molecular weight of 8,000 to 400,000 and a K value of 15 to 60 is even more preferred.

[0017] In some embodiments, the aforementioned hydroxypropyl methylcellulose (HPMC) and / or hydroxyethyl cellulose (HEC) are synthetic or semi-synthetic inert viscoelastic polymers. By blending and compounding with polyvinyl alcohol, they can play a protective role, enhancing the film-forming properties of polyvinyl alcohol, reducing the amount of polyvinyl alcohol used, increasing the amount of surfactant used, and improving the effective content of the concentrated product, thereby achieving the goal of achieving good cleaning results with a small amount of product.

[0018] In some embodiments, the surfactant is a combination of one or two of an anionic surfactant and a nonionic surfactant.

[0019] In some embodiments, the surfactant is a composition comprising an anionic surfactant and a nonionic surfactant in a weight ratio of 10:1 to 10:6.

[0020] In some embodiments, the anionic surfactant may be selected from sulfate compounds obtained by sulfated olefins, such as alkylbenzenesulfonates and α-alkene sulfonates, and non-alkoxylated linear or branched alkyl (C6-C20) sulfates obtained by directly sulfating fatty acids and neutralizing them with alkali. Representative examples include dodecylbenzenesulfonate (LAS), α-olefin sulfonate (AOS), dodecyl sulfate (SLS), secondary alkane sulfonate (SAS), and fatty acid methyl ester sulfonate (MES). It may also be selected from linear or branched (C6-C20) alkyl alkoxylated sulfates having a weight average alkoxylation degree of 0.1 to 10, preferably linear or branched (C10-C16) alkyl ethoxylated sulfates having a heavy homoalkoxylation degree of about 1 to 5, such as, but not limited to, dodecyl polyether sulfate (AES).

[0021] In some embodiments, the nonionic surfactant may be selected from alkyl alkoxylated alcohols (C6-C20) having a weight average degree of alkoxylation ranging from 5 to 15, including fatty alcohols, isomeric alcohol ethoxylates, polyoxyethylene ethers, alkylphenol ethoxylates, fatty acid polyoxyvinyl esters, oil ethoxylates, alkanol ethoxylates, ethylene oxide, propylene oxide, polyethers, polyol ester ethers, etc. Representative examples include, but are not limited to, fatty acid alcohol ethoxylates, polyoxyethylene alkylphenyl ethers, polyoxyethylene alkyl ethers, polyoxyethylene polyoxypropylene block copolymers, polyethylene glycol fatty acid esters, polyoxyethylene sorbitan fatty acid esters, cocamide monomethylamine, cocamide dimethylamine, cocamide monoethanolamine, cocamide diethanolamine, fatty acid alkyl olamides, alkyl polyglucosides, methyl polyvinyl ethers, glucoside polyoxylates, fatty acid methyl ester ethoxylates, etc.

[0022] In some embodiments, the enzyme preparation is one or more selected from the group consisting of proteases, amylases, lipases, cellulases, mannanases, pectin lyases, papain, oxidoreductases, and glycohydrolases.

[0023] In some examples, the enzyme formulation may be a commercially available solid enzyme formulation, such as solid phase isozymes from KDN Biotech Group (Cat. No. DX01: a complex of protease and cellulase), solid phase protease (Cat. No. 12.0T), solid phase cellulase (Cat. No. C2000), and solid phase cellulase from Novozymes (Cat. No. Careayme Premium 5000T, Cat. No. Celluclean 4500T), solid phase amylase (Cat. No. Stainzyme Plus Evity 12T), or the Savinase series of solid phase proteases (Savinase 4.0T, Savinase 6.0T, Savinase 8.0T, Savinase 12T, Savinase 24T).

[0024] The enzyme preparation may be, for example, but is not limited to, alkaline protease-coated particles and the preparation method thereof disclosed in Chinese Patent Publication No. CN102533708A, and enzyme particles prepared in a granular enzyme composition disclosed in Chinese Patent Publication No. CN105283534A.

[0025] In some embodiments, the particles of the enzyme preparation have an average particle size of 0.01 mm to 3.0 mm.

[0026] In some embodiments, the particles of the enzyme formulation have an average particle size of 0.05 mm to 2.8 mm, 0.1 mm to 2.5 mm, 0.1 mm to 2.0 mm, 0.5 mm to 2.0 mm, 1 mm to 2.0 mm, or 1.5 mm to 1.8 mm, including, but not limited to, any value and range therein.

[0027] In some embodiments, the fabric softener formulation comprises one or more of a cationic fabric softener, an anionic fabric softener, a nonionic fabric softener, an amphoteric quaternary ammonium salt fabric softener, a silicone fabric softener, polyethylene glycol / polypropylene glycol, and a molding aid.

[0028] In some embodiments, the particles of the fabric softener formulation have an average particle size of 0.01 mm to 3.0 mm.

[0029] In some embodiments, the particles of the fabric softener formulation have an average particle size of 0.05 mm to 2.8 mm, 0.1 mm to 2.5 mm, 0.1 mm to 2.0 mm, 0.5 mm to 2.0 mm, 1 mm to 2.0 mm, or 1.5 mm to 1.8 mm, including, but not limited to, any value and range therein.

[0030] In some embodiments, the fabric softener formulation comprises a cationic fabric softener, polyethylene glycol / polypropylene glycol, and a molding aid.

[0031] In some embodiments, the softener formulation comprises a cationic softener, a silicone softener, a polyethylene glycol / polypropylene glycol, and a molding aid.

[0032] In some embodiments, the fabric softener formulation contains a cationic softener, a natural or synthetic cationic cellulose polymer softener, polyethylene glycol / polypropylene glycol, and a molding aid. The cationic softener may be one or more selected from alkyldimethylammonium chloride, alkylimidazoline salt, alkylamide quaternary ammonium salt, and ester quaternary ammonium compound. The natural or synthetic cationic cellulose polymer softener may be one or more selected from guar hydroxypropyltrimonium chloride, hydroxypropyl guar hydroxypropyltrimonium chloride, chitosan, polyquaternary ammonium salt-10, polyquaternary ammonium salt-6, polyquaternary ammonium salt-7, polyquaternary ammonium salt-39, and polyquaternary ammonium salt-6. The polyquaternary ammonium salt series is preferably polyquaternary ammonium salt-10.

[0033] In some embodiments, the silicone flexibilizer is selected from one or more of dimethylsiloxane, polydimethylsiloxane, amino-modified polyorganosiloxane, polyether-modified siloxane, aminopolyether-modified siloxane, aminopolyether-modified siloxane, epoxypolyether-modified polysiloxane, and linear block polypolyether-modified siloxane.

[0034] In some examples, the shaping aid may be a water-soluble organic substance, an insoluble organic substance, an inorganic salt, etc. Specifically, the shaping aid is selected from one or more of bentonite, kaolin, sodium sulfate, neutral sodium silicate, sodium pyrophosphate, sodium borate, talc, silicon dioxide, 4A zeolite, and starch, cellulose, dextrin, and polysaccharides.

[0035] In some embodiments, the weight average molecular weight of the polyethylene glycol / polypropylene glycol is between 2,000 and 20,000.

[0036] In some embodiments, the weight average molecular weight of the polyethylene glycol / polypropylene glycol is 3,000 to 20,000, 4,000 to 18,000, 5,000 to 15,000, 6,000 to 13,000, 7,000 to 12,000, 8,000 to 11,000, 9,000 to 10,000, including any value and range therebetween.

[0037] In some embodiments, the particles of the fabric softener formulation comprise: 3 to 60 parts by weight of polyethylene glycol / polypropylene glycol; 1 to 60 parts by weight of a cationic softener; and / or 1 to 10 parts by weight of a silicone softener; 1 to 90 parts by weight of bentonite; 1 to 50 parts by weight of starch; and 1 to 10 parts by weight of dextrin.

[0038] In some embodiments, the process can be selected from, but is not limited to, fluidized bed spray drying, pressure spray drying, pneumatic spray drying, vertical scraper film drying, turbulent tube drying, horizontal scraper film flash drying, and rotary drum drying.

[0039] In some embodiments, the foam booster formulation is selected from a mixture of anionic surfactants, zwitterionic surfactants, nonionic surfactants, and water, and more particularly, the foam booster formulation is a mixture of at least one of potassium lauryl alkanoate, triethanolamine dodecylbenzenesulfonic acid salt, sodium laureth sulfate, polyoxyethylene alkyl ether phosphate triethanolamine salt, alkyl glycosides with carbon chains (C8-C16), alkanolamides (C10-C16), fatty acid monoethanolamides and diethanolamides, cocamidopropyl hydroxysultaine, sodium alkylamidoamphoacetate, and olefin (C12-C16) sulfonates with deionized or distilled water, and has a conductivity of <10 μs / cm.

[0040] In some embodiments, the foam booster formulation comprises: 1 to 4 parts by weight of potassium lauryl alkylate; 6 to 14 parts by weight of dodecylbenzenesulfonic acid TEA salt; 2 to 8 parts by weight of an olefin (C12-C16) sulfonate; 5 to 11 parts by weight of polyoxyethylene alkyl ether phosphate ester salt triethanolamine salt; 6 to 14 parts by weight of an alkyl glycoside; 2 to 6 parts by weight of cocamidopropyl hydroxysultaine, and 30 to 90 parts by weight of deionized water.

[0041] In some embodiments, the foam booster formulation can be prepared by the following method: adding 60.5 parts by weight of deionized water / distilled water to a stirring vessel, and sequentially adding 2.5 parts by weight of potassium lauryl alkylate, 10 parts by weight of TEA salt of dodecylbenzenesulfonic acid, 5 parts by weight of olefin (C12-C16) sulfonic acid, 8 parts by weight of polyoxyethylene alkyl ether phosphate triethanolamine salt, 10 parts by weight of alkyl (C12-C16) glycoside, and 4 parts by weight of cocamidopropyl hydroxysulfobetaine, and stirring until uniformly dissolved to obtain the foam booster formulation.

[0042] In some embodiments, the detergent tablets further contain one or more of a dye inhibitor, a fragrance essence, glycerin, propylene glycol, butylene glycol, pentylene glycol, mannitol, hydroxyethyl urea, glyceryl glucoside, tetrasodium glutamate diacetate, sodium bicarbonate, sodium iminodisuccinate, sodium polyaspartate, sodium polyepoxysuccinate, and trisodium methylglycine diacetate.

[0043] In some embodiments, the dye inhibitor is one or more selected from cationic dye inhibitors, nonionic dye inhibitors, and inorganic salt dye fixatives. Specifically, the dye inhibitor is one or more of cationic dye inhibitors such as imidazoline, quaternary ammonium salt, aliphatic polyamine derivatives, inorganic salts (e.g., bentonite), and celluloses, and nonionic dye inhibitors such as polyvinylpyrrolidone and modified vinylpyrrolidone / vinimidazole copolymers. Preferably, the dye inhibitor is a mixture of polyvinylpyrrolidone and one or more of modified vinylpyrrolidone / vinimidazole copolymer, aliphatic polyamine derivative, and polyquaternary ammonium salt cellulose. More preferably, the dye inhibitor is a combination of polyvinylpyrrolidone and modified vinylpyrrolidone / vinimidazole copolymer (10:1-10).

[0044] In some embodiments, the detergent tablet further comprises a foaming accelerator having foaming properties, which may be selected from inorganic foaming accelerators and organic foaming accelerators, and the inorganic foaming accelerator may be a mixture of any one or two of sodium carbonate and sodium bicarbonate.

[0045] In some examples, the enzyme preparations and fabric softener preparation particles of the present invention may appear as spheres, rods, plates, tubes, squares, rectangles, disks, stars, or thin slices of regular or irregular shapes.

[0046] In a second aspect, the present invention provides a method for preparing a detergent tablet, comprising: 1) dissolving a water-soluble polymer in deionized water to form a film-forming sheet material solution for the preparation of a tablet-type detergent; 2) adding surfactants, foaming agent formulation ingredients and / or molding aids in sequence, stirring and mixing uniformly, and then heating and drying to obtain a semi-solid sheet material; 3) distributing the enzyme preparation and the softener preparation in solid particle form onto the semi-solid sheet material prepared in step 2) while continuously heating, and then drying and shaping the sheet material to obtain a detergent tablet.

[0047] In summary, the present application includes at least one of the following beneficial technical effects: 1. The present tablet detergent has a high content of enzyme and fabric softener preparations, providing clear advantages in cleaning power and anti-static ability. The high enzyme content provides excellent cleaning effects on proteins, milk scum, and blood stains that are difficult to remove in daily life, making it suitable for use not only on clothes but also in dishwashers for washing dishes. The high content of fabric softener preparations allows the present tablet detergent to simultaneously achieve the dual effects of washing and softening clothes.

[0048] 2. This application uses a solid enzyme formulation that is less likely to volatilize and has stable performance characteristics. The solid enzyme formulation and the coated fabric softener are added to detergent tablets that are continuously dried by a mechanical device. This allows the solid enzyme formulation and the coated fabric softener to be added in maximum amounts while drying, ensuring that the stability of the detergent tablets is not affected by temperature or humidity. This allows the solid enzyme formulation and the coated fabric softener to be stably adsorbed by the dried tablets and meets the requirements for plastic-free packaging, reducing plastic pollution and making the product more environmentally friendly. Furthermore, the amount of solid enzyme formulation and the coated fabric softener can be flexibly controlled by adjusting the mechanical speed via frequency conversion, and the amount added can be flexibly set according to the items being washed, making it suitable for large-scale production.

[0049] 3. The use of a foam booster formulation in combination with detergent ingredients increases the volume of the slurry during tablet production, reduces its density, makes it lighter, and loosens its internal structure. The tablet detergent slurry can be dried quickly during tablet production, reducing and avoiding the impact of drying temperature on the stability of the solid enzyme formulation and the coated solid fabric softener formulation. At the same time, the low density, light weight, and loose internal structure of the slurry not only facilitates the addition of large amounts of enzyme formulation ingredients to the continuously drying slurry, but also ensures that the solid enzyme formulation and solid fabric softener formulation are firmly adsorbed by the sheet material after the water continues to evaporate, preventing them from falling off, forming a stable detergent sheet material with strong cleaning power and softening properties.

[0050] 4. By utilizing the properties of the foam booster formulation and the foaming agent to loosen the internal structure of the slurry, the molecular chains of the film-forming water-soluble polymer are easily broken or unraveled in the aqueous slurry, so that the addition of an auxiliary agent to the cleaning sheet composition does not affect the stability and non-shedding of the components of the cleaning particle composition or the solid-phase fabric softener formulation. At the same time, the addition of an auxiliary agent not only makes the slurry easier to dry, but also reduces the moisture content of the dried cleaning sheet, which helps improve the storage stability of the tablet detergent.

[0051] 5. The high molecular weight of polyethylene glycol / polypropylene glycol allows the polyethylene glycol / polypropylene glycol and the coated cationic fabric softener ingredients to dissolve slowly. This avoids interactions with strong anionic detergent ingredients due to electrostatic adsorption and precipitation during the first wash cycle. After the anionic detergent ingredient-containing tablet and solid enzyme preparation are initially dissolved in the laundry, the polyethylene glycol / polypropylene glycol and the coated cationic fabric softener ingredients begin to dissolve during the rinse cycle, releasing the cationic fabric softener ingredients and bringing them into contact with the clothes. This not only quickly neutralizes anionic detergent residue on clothes, but also quickly restores fabric softener to the washed clothes. This truly achieves the benefits of washing, cleaning, protecting, and softening clothes. DETAILED DESCRIPTION OF THE INVENTION

[0052] The technical solution of the present disclosure will be described in more detail below with reference to the accompanying drawings and examples, which are not intended to limit the present application but are merely used to interpret the present application.

[0053] Unless otherwise specified, materials used in the examples are commercially available. If specific operational steps, experimental conditions, instruments or devices used are not shown in the examples, those skilled in the art can carry out operational steps, experimental conditions, instruments or devices routinely used in the art and are within the scope of this application.

[0054] Preparation example Enzyme preparation particles The enzyme preparations used in the examples and comparative examples of this application are enzyme preparation A: solid-phase isozyme from KDN Biotech Group, catalog number DX01, which is a complex of protease and cellulase, and enzyme preparation B: solid-phase cellulase from Novozymes, catalog number: solid-phase protease Savinase 8.0T.

[0055] Preparation of fabric softener formulation particles The method for preparing the softener preparation particles used in the examples and comparative examples of this application is as follows: 40 kg of polyethylene glycol / polypropylene glycol is added to a heated stirring kettle and heated to a liquid state, and 40 kg of cationic softener, 5 kg of silicone softener, 45 kg of bentonite, 25 kg of starch, and 5 kg of dextrin are added sequentially, stirred and mixed uniformly, and then extruded and cooled or spray-dried to obtain an irregular solid-phase softener preparation.

[0056] Preparation of Foam Booster Formulation The foam booster formulation used in the examples and comparative examples of this application is prepared as follows: 60.5 kg of deionized / distilled water is added to a stirring kettle, and 2.5 kg of potassium lauryl alkylate, 10 kg of TEA salt of dodecylbenzenesulfonic acid, 5 kg of olefin (C12-C16) sulfonic acid, 8 kg of polyoxyethylene alkyl ether phosphate triethanolamine salt, 10 kg of alkyl (C12-C16) glycoside, and 4 kg of cocamidopropyl hydroxysulfobetaine are added in sequence, and the mixture is stirred and dissolved uniformly to obtain the foam booster formulation.

[0057] Example Example 1 The tablet detergent provided in this example is It contains 8 kg of water-soluble polymers (specifically, 6 kg of PVA, 1 kg of PVP, and 1 kg of HPMC), 14 kg of surfactants (specifically, 12 kg of SDS and 2 kg of fatty alcohol polyoxyethylene ether AEO9), 2 kg of enzyme preparation, 2 kg of softener preparation, 1 kg of foam enhancer preparation, 5 kg of molding aid, 0.1 kg of dye inhibitor, 1 kg of tetrasodium glutamate diacetate, 0.2 kg of fragrance essence, 0.2 kg of sodium bicarbonate, and 3 kg of glycerin.

[0058] The method for preparing the detergent tablets according to this example is as follows. 1) Dissolve 8 kg of water-soluble polymer in 50 kg of deionized water, heat to 80-90°C, and stir evenly to prepare a film-forming sheet material solution for tablet detergent. 2) 14 kg of surfactant, 1 kg of foam booster formulation ingredients, 5 kg of molding aids (specifically starch / bentonite), 0.1 kg of dye inhibitor, 1 kg of tetrasodium glutamate diacetate, 0.2 kg of fragrance essence, 0.2 kg of sodium bicarbonate, and 3 kg of glycerin are added in sequence, stirred and mixed uniformly, heated and dried to obtain a semi-solid sheet material. 3) 2 kg of the enzyme preparation in the form of solid particles and 2 kg of the fabric softener preparation in the form of solid particles prepared in the preparation example are distributed on the semi-solid sheet material prepared in 2) which is being continuously heated, dried and molded to obtain tablet-type detergent.

[0059] Examples 2 to 8 The detergent tablets of Examples 2 to 8 are prepared according to the composition of each detergent tablet of Table 1 and the method disclosed in Example 1.

[0060] Comparative Examples 1 to 2 and 5 to 6 Using the composition of each comparative detergent tablet in Table 2, the detergent tablets of Comparative Examples 1 to 2 and 5 to 6 are prepared according to the method disclosed in Example 1.

[0061] Comparative Example 3 Table 2 shows the content of each component in this comparative example.

[0062] The method for preparing the tablet detergent according to this comparative example is as follows. 1) 29.5 kg of water-soluble polymer is dissolved in 60 kg of deionized water, heated to 80 to 90°C, and stirred uniformly to be used as a solution of film-forming sheet material for manufacturing tablet detergent. 2) 39 kg of surfactant, 1 kg of foam booster formulation ingredients, 10 kg of molding aids (especially starch / bentonite), 0.6 kg of dye inhibitor, 1 kg of tetrasodium glutamate diacetate, 0.5 kg of fragrance essence, 0.7 kg of sodium bicarbonate, and 5 kg of glycerin are added in sequence, stirred and mixed uniformly, heated and dried to obtain a semi-solid sheet material. 3) 5 kg of the softener formulation in solid particle form is distributed onto a semi-solid sheet material that is continuously heated, dried, molded and demolded to obtain a solid sheet material. 4) Add 5 kg of fabric softener preparation to a mixture of an appropriate amount of glycerin and propylene glycol to dissolve, and stir thoroughly and uniformly to obtain a solution of enzyme preparation. Spray the solution of enzyme preparation onto a solid sheet material to obtain the tablet-type detergent.

[0063] Comparative Example 4 Table 2 shows the content of each component in this comparative example.

[0064] The method for preparing the tablet detergent according to this comparative example is as follows. 1) 29.5 kg of water-soluble polymer is dissolved in 60 kg of deionized water, heated to 80 to 90°C, and stirred uniformly to be used as a solution of film-forming sheet material for manufacturing tablet-type detergent. 2) Add 25 kg of enzyme preparation to water and dissolve, then stir thoroughly and uniformly to obtain a solution of enzyme preparation. 3) The solution of the enzyme preparation prepared in 2) is added to the solution of the film-forming sheet material prepared in 1), and 39 kg of surfactant, 1 kg of foaming agent preparation components, 10 kg of forming aids (specifically starch / bentonite), 0.6 kg of dye inhibitor, 1 kg of tetrasodium glutamate diacetate, 0.5 kg of fragrance essence, 0.7 kg of sodium bicarbonate, and 5 kg of glycerin are added in sequence, and the mixture is stirred and mixed uniformly, heated, and dried to obtain a semi-solid sheet material. 3) 5 kg of the fabric softener preparation in the form of solid particles is distributed onto the semi-solid sheet material prepared in 2) which is continuously heated, dried and molded to obtain the tablet-type detergent.

[0065] Comparative Example 7 Table 2 shows the content of each component in this comparative example.

[0066] The method for preparing the tablet detergent according to this comparative example is as follows. 1) 29.5 kg of water-soluble polymer is dissolved in 60 kg of deionized water, heated to 80 to 90°C, and stirred uniformly to be used as a solution of film-forming sheet material for manufacturing tablet detergent. 2) 39 kg of surfactant, 1 kg of foam booster formulation ingredients, 10 kg of molding aids (especially starch / bentonite), 0.6 kg of dye inhibitor, 1 kg of tetrasodium glutamate diacetate, 0.5 kg of fragrance essence, 0.7 kg of sodium bicarbonate, and 5 kg of glycerin are added in sequence, stirred and mixed uniformly, heated and dried to obtain a semi-solid sheet material. 3) 25 kg of the enzyme preparation in the form of solid particles is distributed onto a semi-solid sheet material that is continuously heated, dried, molded and released to obtain a solid sheet material. 4) Add 5 kg of fabric softener preparation to the mixture of appropriate amounts of glycerin, propylene glycol, and dissolve, and stir thoroughly and uniformly to obtain a solution of fabric softener preparation. Spray the solution of fabric softener preparation onto the solid sheet material to obtain the tablet-type detergent.

[0067] Comparative Example 8 Table 2 shows the content of each component in this comparative example.

[0068] The method for preparing the tablet detergent according to this comparative example is as follows. 1) 29.5 kg of water-soluble polymer is dissolved in 60 kg of deionized water, heated to 80 to 90°C, and stirred uniformly to be used as a solution of film-forming sheet material for manufacturing tablet detergent. 2) Add 5 kg of fabric softener preparation to water and dissolve, then stir thoroughly and evenly to obtain a solution of fabric softener preparation. 3) The solution of the softener formulation prepared in 2) is added to the solution of the film-forming sheet material prepared in 1), and 39 kg of surfactant, 1 kg of foaming agent formulation components, 10 kg of forming aids (specifically starch / bentonite), 0.6 kg of dye inhibitor, 1 kg of tetrasodium glutamate diacetate, 0.5 kg of fragrance essence, 0.7 kg of sodium bicarbonate, and 5 kg of glycerin are added in sequence, and the mixture is stirred and mixed uniformly, heated, and dried to obtain a semi-solid sheet material. 4) 25 kg of the fabric softener preparation in the form of solid particles is distributed onto the semi-solid sheet material prepared in 2) which is continuously heated, dried and molded to obtain the tablet-type detergent.

[0069] Comparative Example 9 The content of each component in this comparative example is shown in Table 2. According to the method disclosed in Example 1, the detergent tablets of this comparative example are prepared.

[0070] Comparative Example 10 Table 2 shows the content of each component in this comparative example.

[0071] The method for preparing the tablet detergent according to this comparative example is as follows. 1) 29.5 kg of water-soluble polymer is dissolved in 60 kg of deionized water, heated to 80 to 90°C, and stirred uniformly to be used as a solution of film-forming sheet material for manufacturing tablet detergent. 2) 39 kg of surfactant, 1 kg of foam booster formulation components, 10 kg of molding aids (specifically starch / bentonite), 0.6 kg of dye inhibitor, 1 kg of tetrasodium glutamate diacetate, 0.5 kg of fragrance essence, 0.7 kg of sodium bicarbonate, and 5 kg of glycerin are added in sequence, stirred and mixed uniformly, and 25 kg of a solid particle form enzyme formulation and 25 kg of a solid particle form softener formulation are added in sequence, stirred uniformly, heated, and dried to obtain a semi-solid sheet material.

[0072] Table 1. Compositions of detergent tablets in Examples 1 to 8 [Table 1]

[0073] Table 2. Compositions of tablet detergents in Comparative Examples 1 to 10 [Table 2]

[0074] Performance test experiment 1. Stability of enzyme and fabric softener particles: After the detergent tablets were placed in a test environment with a temperature of (25±2)°C and a humidity of (40±5)% for 48 hours, the detergent tablets were picked up by hand, turned over, and rubbed appropriately to observe whether the enzyme and fabric softener particles on the detergent tablets had fallen off. The results are shown in Table 3.

[0075] 2. Moisture resistance and stability: Two detergent tablets were placed one on top of the other and left in a test environment with a temperature of (25±2)°C and humidity of (85±5)% for 24 hours. Then, the two detergent tablets were separated and observed for adhesion between the tablets. The adhesion was classified into no adhesion, slight adhesion, and obvious adhesion. The results are shown in Table 3.

[0076] 3. Detergency test: According to the evaluation method of GB / T13174-2021 "Measurement of Detergency and Cycle Washing Performance of Laundry Detergents" and combined with the evaluation criteria of QB / T1224-2012 "Liquid Laundry Detergents", the test concentration of standard liquid detergent is 0.2%, and the test concentration of the sample is 0.013% (the test concentration is 1 / 15 of the standard liquid detergent).

[0077] 3.1 Whiteness measurement: The JB-01 soiled cloth, JB-02 soiled cloth, and JB-03 soiled cloth were cut into 6 cm x 6 cm pieces and combined into six groups with approximately the same average blackness for each type, and the samples from each group were used in the performance test of the same sample.

[0078] Using a whiteness meter, the whiteness values were read at 457 nm for each sample before and after cleaning. Before cleaning, two points were taken on the front and back of the sample (the 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 cleaning. After cleaning, two points were taken on the front and back of the sample (the 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 cleaning.

[0079] 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:

[0080] 3.2 Calculation of cleaning value of soiled cloth The cleaning value of a certain type of soiled cloth is 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.

[0081] 3.3 Calculation of cleaning ratio for soiled cloth The cleaning ratio Pi=R3i / R0i for the ith type of soiled cloth for standard liquid detergent In the formula, R0i is the cleaning value of a standard liquid detergent, %, R3i is the cleaning value of the sample. The result is kept to one decimal place.

[0082] 3.4 Determination of detergent cleaning power If Pi≧1.0, the judgment conclusion is "The cleaning power of the sample on the i-th type of soiled cloth is equal to or better than the cleaning power of the standard liquid detergent," which is abbreviated as "The cleaning power on the i-th type of soiled cloth is pass."

[0083] 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 4.

[0084] 4. Antistatic performance test: According to QB / T4535-2013 fabric softener standard, the antistatic properties of the detergent tablets were tested. The logarithmic difference meter of surface resistivity △lgρs≧2.5 was considered acceptable. The results are shown in Table 4.

[0085] Table 3: Particle stability and humidity stability test results for tablet detergents prepared in Examples and Comparative Examples [Table 3]

[0086] Table 4. Test results of detergency and antistatic performance of tablet detergents prepared in Examples and Comparative Examples [Table 4]

[0087] The data in Table 4 show that with increasing enzyme preparation content, the cleaning ratios for JB-01, JB-02, and JB-03 soiled cloths gradually increased, and cleaning performance gradually improved. In Comparative Example 2, the enzyme preparation content was relatively high (70 kg), but the improvement in cleaning effect was not as obvious as in Example 8 (enzyme preparation content of 50 kg). When the enzyme preparation addition amount was in the range of 0.1 to 50 kg, the cleaning effect increased with the enzyme preparation content, and the improvement in cleaning effect was obvious. In particular, for JB-02 soiled cloth, which had a high level of protein stains, the enzyme preparation content had a more significant effect on detergency.

[0088] In Comparative Example 3, the enzyme preparation was prepared as a liquid and then sprayed onto solid detergent tablets. The cleaning ratio for JB-02-stained fabrics was only 2.52, whereas the cleaning ratio for JB-02-stained fabrics in Example 1, which contained the same enzyme preparation content, was 3.95. This indicates that the cleaning effect was much worse than that of detergent tablets using a particulate enzyme preparation. This is because the exposed liquid enzyme preparation is easily affected by ambient temperature and humidity, which affects the cleaning effect. In Comparative Example 4, the liquid enzyme preparation was directly mixed with other ingredients in detergent tablets, dried, and molded. The cleaning ratio for JB-02-stained fabrics was only 2.21, whereas the cleaning ratio for JB-02-stained fabrics in Example 1, which contained the same enzyme preparation content, was 3.95. This indicates that the cleaning effect was much worse than that of detergent tablets using a particulate enzyme preparation. This is because the liquid enzyme preparation was directly incorporated into the detergent tablets, and the enzyme was partially inactivated during the drying and molding process, thereby impairing the detergent tablets' detergency.

[0089] In Comparative Examples 3 and 4, a liquid enzyme preparation was incorporated, and clear adhesion was observed in the 24-hour humidity stability test and the 48-hour humidity stability test. The stability performance of the tablet-type detergents in Examples 1 to 8 is all good.

[0090] As can be seen from the data in Table 4, the antistatic properties of fabrics washed with tablet detergent gradually increase with increasing content of fabric softener formulation. In Comparative Example 6, the amount of fabric softener particles was high (70 kg), and the antistatic properties were not significantly improved compared to the addition of 50 kg of fabric softener formulation in Example 7.

[0091] In Comparative Example 7, the fabric softener was sprayed onto the semi-solid detergent tablets in liquid form. As can be seen from the data in Table 4, the antistatic property of the fabric washed with the detergent tablets of Comparative Example 7 was only 2.0. The detergency of the detergent tablets of Comparative Example 7 was also significantly weaker than that of the detergent tablets containing the same amount of fabric softener formulation in Example 1. In Comparative Example 8, the fabric softener was added directly in liquid form together with the other ingredients. As can be seen from the data in Table 4, the antistatic property of the fabric washed with the detergent tablets of Comparative Example 8 was only 2.0, which was unacceptable. The detergency of the detergent tablets of Comparative Example 8 was also significantly weaker than that of the detergent tablets containing the same amount of fabric softener formulation in Example 1. This is because the surfactants used in the examples of this application were anionic and nonionic surfactants, while the softener used contained a cationic surfactant. When fabric softener formulations are incorporated by spraying or directly mixed with other ingredients in tablet-type detergents, they can come into direct contact with the surfactants, causing electrostatic adsorption and precipitation of cationic and anionic surfactants, weakening their effectiveness. In Example 1, the high molecular weight properties of polyethylene glycol / polypropylene glycol are utilized to slowly dissolve the cationic fabric softener components coated with polyethylene glycol / polypropylene glycol. This avoids interactions with strong anionic detergent components due to electrostatic adsorption and precipitation during the first wash cycle. After the anionic detergent component-containing tablet and solid-phase enzyme formulation are initially dissolved in the laundry, the cationic fabric softener components coated with polyethylene glycol / polypropylene glycol begin to dissolve during the rinse cycle, releasing the cationic fabric softener components into contact with the clothes. This not only quickly neutralizes anionic detergent residue on clothes, but also quickly restores fabric softener to the washed clothes. This effectively achieves the washing, cleaning, protecting, and softening effects of clothes.

[0092] In Comparative Examples 7 and 8, a liquid fabric softener formulation was incorporated, and in the stability test, clear adhesion was observed in the 24-hour humidity stability and 48-hour humidity stability tests.

[0093] In Comparative Example 9, no foam booster was added, and the overall structure of the tablet detergent was relatively compact and not sufficiently loose, resulting in the phenomenon of many enzyme preparation particles and fabric softener particles falling off, and the detergency and antistatic properties were also much weaker than in Example 5, which contained a foam booster but had the same other compositions. This is because the foam booster loosens the internal structure of the slurry, making the molecular chains of the film-forming water-soluble polymer fragile or easily unravel in the aqueous slurry, and the addition of an auxiliary agent to the tablet detergent composition does not affect the stability and non-shedding of the components of the cleaning particle composition and the solid-phase fabric softener formulation.

[0094] In Comparative Example 10, enzyme particles and fabric softener particles were directly mixed with other ingredients of the detergent tablets to prepare a detergent tablet in which the enzyme particles and fabric softener particles were completely embedded in the detergent tablets. The composition of the detergent tablets in Comparative Example 10 was exactly the same as that in Example 5, with the only difference being the location of the enzyme particles and fabric softener particles in the detergent tablets. In Example 5, the particles were embedded on the detergent tablets, while in Comparative Example 10, the particles were uniformly embedded inside the detergent tablets. The test results for detergency and antistatic performance in Table 4 show that the detergent tablets in Comparative Example 10 had poor detergency and antistatic performance. This is because the enzyme particles and fabric softener particles were positioned on the surface of the detergent tablets, allowing them to come into contact with water more quickly and dissolve quickly, thereby quickly achieving their cleaning and antistatic effects. In Comparative Example 10, the particles are uniformly embedded in the detergent tablet, and the detergent tablet must be dissolved as a whole before the enzyme particles and fabric softener particles are released, after which the enzyme particles and fabric softener particles come into contact with water to exert their cleaning and antistatic effects. In the quick mode of the washing machine, the advantage of the setting with the enzyme particles and fabric softener particles embedded in the detergent tablet is even more obvious.

[0095] 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 make modifications to the examples as necessary 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. In tablet detergents, The composition contains a water-soluble polymer, a surfactant, an enzyme preparation, a softener preparation, a foam booster preparation, and a molding aid in a weight ratio of 8 to 34:14 to 50:0.1 to 50:0.1 to 50:1 to 10:0 to 30, the water-soluble polymer is a mixture of PVA, PVP, and HPMC; the surfactant is one or more of SDS, AOS, LAS, AES, fatty alcohol polyoxyethylene ethers, fatty acid methyl ester ethoxylates, isomeric tridecanol polyoxyethylene ethers; The enzyme preparation is a complex of protease and cellulase or a solid-phase cellulase, the fabric softener formulation comprises polyethylene glycol / polypropylene glycol, a cationic fabric softener, a silicone fabric softener, bentonite, starch, and dextrin in a weight ratio of 3-60:1-60:1-10:1-90:1-50:1-10; the foam booster formulation comprises potassium lauryl alkylate, dodecylbenzenesulfonic acid TEA salt, olefin (C12-C16) sulfonate, polyoxyethylene alkyl ether phosphate ester salt triethanolamine salt, alkyl glycoside, cocamidopropyl hydroxysultaine, and deionized water in a weight ratio of 1-4:6-14:2-8:5-11:6-14:2-6:30-90; the molding aid is starch / bentonite; The detergent tablet is characterized in that the enzyme preparation and the fabric softener preparation are embedded in the form of solid particles so as to be exposed on the surface of the detergent tablet.

2. 2. The detergent tablet according to claim 1, wherein the average particle size of the enzyme preparation particles is 0.01 mm to 3.0 mm.

3. 2. The detergent tablet of claim 1, further comprising one or more of a dye inhibitor, a fragrance essence, glycerin, propylene glycol, butylene glycol, pentylene glycol, mannitol, hydroxyethyl urea, glyceryl glucoside, tetrasodium glutamate diacetate, sodium bicarbonate, sodium iminodisuccinate, sodium polyaspartate, sodium polyepoxysuccinate, and trisodium methylglycine diacetate.

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