A detergent composition with enhanced cleaning power, preparation method and application thereof

Abstract

The present invention provides a detergent composition with enhanced cleaning power, as well as its preparation method and application. The detergent composition comprises the following components in the following mass fractions: a solvent, a surfactant, a nonionic polymer, a protease, a cellulase, and an additive. The detergent composition of the present invention utilizes the synergistic combination of cellulase, nonionic polymer, protease, and other compounded cleaning ingredients to enhance the detergent composition's cleaning performance, achieving a tenfold cleaning power. Furthermore, the synergistic action of the cellulase, nonionic polymer, and protease rapidly decomposes dirt within a short period of time, improving product efficiency and reducing product cost.

Description

Technical Field

[0001] The present invention belongs to the technical field of washing and care, and in particular relates to a detergent composition with enhanced cleaning power, a preparation method and an application thereof. Background Art

[0002] Laundry detergent pods are a new product in the laundry detergent market. They feature high concentration and quantitative formulations. They are composed of surfactants, builders, enzymes, fragrances, and other ingredients, coated with a water-soluble film to create granular forms. Each pod is a separate washing unit that can be directly placed in the washing machine. Dissolving in water, their convenience has made them popular with consumers.

[0003] While laundry detergent beads contain a high content of active ingredients, the cleaning power of a single bead still has room for improvement. Further improving cleaning power can save resources and increase consumer satisfaction with the cleaning performance of the beads. Commercially available laundry detergent beads are small, weighing approximately 10g-15g each. Most commercially available products are only effective on protein-based stains, with poor cleaning effects on carbon black and sebum-based stains. Improving the comprehensive detergency of laundry detergent beads is a pressing technical challenge.

[0004] In summary, there is an urgent need to research and develop a detergent composition with enhanced cleaning power, a preparation method thereof, and an application technology solution to solve the problems existing in the prior art. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, the present invention provides a detergent composition with enhanced cleaning power, a preparation method and application thereof, so as to solve the problem that the detergent composition in the prior art only has a high cleaning effect on protein stains, but has a poor cleaning effect on carbon black and sebum stains.

[0006] One embodiment of the present invention provides a detergent composition with enhanced cleaning power, comprising the following components in mass fractions:

[0007]

[0008]

[0009] in,

[0010] The nonionic polymer is a product obtained by the reaction of polyol, organic acid and ethylene oxide.

[0011] The synergistic effect of protease, cellulase and non-ionic polymer can significantly improve the removal ability of carbon black, sebum and protein stains.

[0012] Furthermore, the solvent is selected from one or more of ethanol, glycerol, propylene glycol, sorbitol, polyethylene glycol, diethylene glycol butyl ether, dipropylene glycol methyl ether, tripropylene glycol methyl ether, diethylene glycol butyl ether acetate, dipropylene glycol butyl ether, and tripropylene glycol butyl ether.

[0013] Furthermore, the surfactant is selected from one or more of anionic surfactants, nonionic surfactants, amphoteric surfactants, and cationic surfactants.

[0014] Specifically, the anionic surfactant is selected from a mixture of one or more of alkyl sulfates, fatty alcohol polyoxyethylene sulfates, fatty alcohol polyoxyethylene carboxylates, α-olefin sulfonates, and fatty acid salts;

[0015] Furthermore, the fatty acid salt is a metal salt of a C10-C20 straight-chain saturated fatty acid.

[0016] Specifically, the fatty acid salt is formed by neutralizing fatty acids with an alkali agent;

[0017] Preferably, the alkaline agent is one or more of NaOH, KOH and monoethanolamine;

[0018] Preferably, the fatty acid salt is a mixture of one or more alkali metal salts of lauric acid, myristic acid, palmitic acid, oleic acid, stearic acid and arachidonic acid;

[0019] Preferably, the fatty acid salt is the sodium salt of the fatty acid salt.

[0020] Specifically, the nonionic surfactant is selected from one or more of fatty alcohol polyoxyethylene ethers, fatty alcohol alkoxylates, fatty acid ethoxylates, and fatty acid alkylolamides.

[0021] Specifically, the zwitterionic surfactant is selected from one or more mixtures of amino acid surfactants, amine oxide surfactants, betaine surfactants, and imidazoline surfactants.

[0022] Furthermore, the cellulase is selected from one or more of endocellulase, exocellulase, cellobiase, oxidative cellulase and cellulose phosphorylase.

[0023] Furthermore, the protease is selected from one or more of cysteine ​​protease, metalloprotease, serine protease and aspartic protease.

[0024] Furthermore, the auxiliary agent is selected from one or more of preservatives, anti-redeposition agents, flavors, pigments, and alkali metal halide salts.

[0025] The present invention also provides a method for preparing a detergent composition with enhanced cleaning power, comprising the following steps:

[0026] A1. Add the solvent and 1 / 5 of water into the container and stir well.

[0027] A2. Heat to 50-70°C, add the alkali and fatty acid, and stir until completely dissolved;

[0028] A3. Add surfactant, nonionic polymer, anti-redeposition agent and stir until completely dissolved;

[0029] A4. Add the remaining water, cool to 50°C, and adjust the pH of the solution to 6.5-8.5.

[0030] A5. After cooling to 45°C, add other additives and stir until dissolved to obtain a detergent composition.

[0031] Furthermore, the preparation method of the nonionic polymer comprises the following steps:

[0032] S1. Under nitrogen protection, the polyol and the organic acid are mixed, lead oxide is added, and the reaction is heated to obtain an intermediate product;

[0033] S2. Under the protection of nitrogen, add the intermediate product and catalyst, stir evenly, then add ethylene oxide, heat to react, and purify to obtain a non-ionic polymer.

[0034] Furthermore, nonionic polymers have hydrophobic and hydrophilic groups that can interact with surfactants to form micelle structures, making it easier for detergents to penetrate and dissolve dirt, thereby improving the sebum detergency of the formula;

[0035] Specifically, since anionic surfactants easily adsorb on the surface of cellulase, they change the structure of cellulase and thus inactivate the cellulase. The long carbon chain cross-linked structure of non-ionic polymers can wrap the cellulase, preventing the side chain structure on the surface of cellulase from being adsorbed by the anionic surfactants in the formula, thereby improving the stability of the formula and the activity of cellulase.

[0036] Furthermore, the polyol is selected from one or more triols of glycerol, 1,2,4-butanetriol, and octantriol.

[0037] Furthermore, the organic acid is selected from C16-20 straight-chain saturated fatty acids.

[0038] Furthermore, the lead oxide is selected from one or more of lead oxide, lead dioxide, and lead tetroxide.

[0039] Furthermore, the molar ratio of the polyol to the organic acid is 1:2-4.

[0040] Furthermore, the molar ratio of the intermediate product to the ethylene oxide is 1:6-10.

[0041] Furthermore, in step S1, the heating reaction temperature is 175-185°C.

[0042] Furthermore, in step S2, the heating reaction temperature is 145-155°C.

[0043] Furthermore, in step S2, the catalyst is selected from one or more of potassium hydroxide and sodium hydroxide.

[0044] The present invention also provides the use of the detergent composition with enhanced cleaning power in laundry detergent beads products.

[0045] The detergent composition with enhanced cleaning power provided by the present invention has the following beneficial effects:

[0046] Non-ionic polymers can wrap stains that have not been broken down by cellulase and protease and disperse them in water to form an emulsion suspension, which can be more easily mixed with the detergent solution to prevent the stains from adhering to clothes again, thereby improving the cleaning effect on carbon black, protein, and sebum, and quickly decomposing dirt in a short period of time, thereby enhancing the cleaning power; we also unexpectedly discovered that the addition of non-ionic polymers can improve the stability of the formula. Non-ionic polymers with a long carbon chain structure contain more oxygen-containing functional groups, which can easily wrap cellulase, protease and other ingredients, forming intermolecular forces, effectively enhancing stability and the binding strength between ingredients, and reducing the adsorption of anionic surfactants on cellulase in the formula, thereby avoiding cellulase inactivation. DETAILED DESCRIPTION

[0047] In order to more clearly illustrate the technical solutions of the present invention, the following examples are given. Unless otherwise stated, the raw materials, reactions and post-processing methods mentioned in the examples are common raw materials on the market and technical methods well known to those skilled in the art.

[0048] The organic acid was stearic acid purchased from Pacific Oils.

[0049] Ethylene oxide was purchased from Liaoning Aoke Chemical.

[0050] Lead oxide was purchased from Guangzhou Reagent Factory.

[0051] Glycerol, propylene glycol, and diethylene glycol were purchased from Guangzhou Reagent Factory.

[0052] Fatty acid: Palmitic acid purchased from Pacific Oils.

[0053] MEA: monoethanolamine, alkaline agent, purchased from Dow.

[0054] AES: Fatty alcohol polyoxyethylene sulfate, the number of carbon atoms of the fatty alcohol is 12-14, the average degree of ethoxylation is 2, anionic surfactant.

[0055] AOS: α-olefin sulfonate, anionic surfactant.

[0056] AEO9: Fatty alcohol polyoxyethylene ether, the carbon number of the fatty alcohol is 12-14, the average degree of ethoxylation is 9, and it is a non-ionic surfactant.

[0057] CAB: Cocamidopropyl Betaine, a zwitterionic surfactant.

[0058] APG: Alkyl polyglycoside, nonionic surfactant.

[0059] The protease was serine endo-alkaline protease purchased from Novozymes.

[0060] Cellulase was purchased from Novozymes.

[0061] Preservative: Methylisothiazolinone and chloromethylisothiazolinone mixture, purchased from Clariant.

[0062] Anti-redeposition agent, purchased from Dow.

[0063] Caprylic acid: purchased from Pacific Oils & Fats.

[0064] HP20, a polyethyleneimine polymer, was purchased from BASF.

[0065] In an embodiment of the present invention, the preparation method of the nonionic polymer comprises the following steps:

[0066] S1. Under nitrogen, glycerol and stearic acid were mixed, heated to 170°C, a catalytic amount of lead oxide was added, and the mixture was heated at 180°C for 5 h to obtain an intermediate product, wherein the molar ratio of glycerol to stearic acid was 1:2;

[0067] S2. Under the protection of nitrogen, add the intermediate product and a catalytic amount of potassium hydroxide, stir evenly, slowly add ethylene oxide, heat at 150 ° C, and pressurize to 1.5 kg / cm 2 , the reaction was completed after 30 minutes, and the mixed solution after the reaction was passed through diethylene glycol for aggregation, sedimentation, and separation to obtain a non-ionic polymer, wherein the molar ratio of the intermediate product to ethylene oxide was 1:8.

[0068] The components and their corresponding mass fractions in the examples and comparative examples of the present invention are shown in Table 1.

[0069] Table 1 The components and corresponding mass fractions in the detergent compositions of Examples 1-3 and Comparative Examples 1-2

[0070]

[0071] The preparation method of the detergent composition with enhanced cleaning power of Examples 1-3 comprises the following steps:

[0072] A1. Add the solvent and 1 / 5 of deionized water to the container and stir well.

[0073] A2. Heat to 60°C, add the alkali and fatty acid, and stir until completely dissolved;

[0074] A3. Add surfactant, nonionic polymer, anti-redeposition agent and stir until completely dissolved;

[0075] A4. Add the remaining deionized water, cool to 50°C, and adjust the pH of the solution to 7.5.

[0076] A5. After cooling to 45°C, add protease, cellulase, preservatives, pigment, fragrance, and sodium chloride, and stir until dissolved to obtain a detergent composition.

[0077] Comparative Example 1

[0078] The difference between Comparative Example 1 and Example 2 is that in Comparative Example 1, stearic acid in the nonionic polymer is replaced with an equal molar amount of octanoic acid to obtain nonionic polymer A, and the other components, component mass fractions and preparation methods are the same.

[0079] Comparative Example 2

[0080] The difference between Comparative Example 2 and Example 2 is that the nonionic polymer in Comparative Example 2 is replaced by an equal mass of HP20, and the other components, component mass fractions and preparation methods are the same.

[0081] 1. Decontamination performance test

[0082] Test method: The test was conducted in accordance with the national standard GB / T 13174 "Determination of detergency and washing cycle performance of detergents for clothing." The concentration of the standard laundry detergent was 0.2%, and the concentration of the detergent composition samples prepared in Example 2 and Comparative Examples 1-2 was 0.02%. The P values ​​of the three types of soiled fabrics were tested and recorded. The test results are shown in Table 2.

[0083] Table 2 Detergency test results of the detergent compositions of Example 2 and Comparative Examples 1-2

[0084] Carbon black stained cloth Protein stain cloth Sebaceous cloth Standard laundry detergent 1.00 1.00 1.00 Example 2 1.06 1.30 1.18 Comparative Example 1 0.96 0.98 0.89 Comparative Example 2 0.98 1.12 0.90

[0085] Table 2 shows that the detergent composition of Example 2, which rationally combines nonionic polymer, protease, and cellulase, exhibits significantly better cleaning performance on three types of carbon black-stained fabrics, protein-stained fabrics, and sebum-stained fabrics than the standard laundry detergent and the detergent compositions of Comparative Examples 1-2, demonstrating the synergistic effect of the nonionic polymer, protease, and cellulase. In Comparative Example 1, the substitution of stearic acid with octanoic acid in the nonionic polymer resulted in a P value for the detergency of all three types of fabrics less than 1.0. In Comparative Example 2, the substitution of the nonionic polymer for another commercially available polymer resulted in a lack of synergistic effect, resulting in P values ​​for the detergency of carbon black and sebum less than 1.0.

[0086] 2. Stability

[0087] Test method: The specific inspection indicators are as follows:

[0088] Low temperature stability: The detergent compositions of Example 2 and Comparative Examples 1-2 were placed in a refrigerator at 0°C for 4 weeks, returned to room temperature, and their appearance was observed;

[0089] High temperature stability: The detergent compositions of Example 2 and Comparative Examples 1-2 were placed in a 45°C oven for 4 weeks, returned to room temperature, and their appearance was observed;

[0090] The test results are shown in Table 3;

[0091] Table 3 Stability test results of the detergent compositions of Example 2 and Comparative Examples 1-2

[0092]

[0093] According to Table 3, it can be concluded that the various components of the present invention have good compatibility with each other, and the various ingredients can be stably and evenly dispersed in the system, forming a uniform liquid without mechanical impurities, without stratification, and without obvious suspended matter or precipitation. The detergent composition of Example 2 can still maintain the stability of the components under high or low temperature environments, has excellent heat and cold resistance, and remains stable at -0°C and 45°C. However, in Comparative Example 1, since the stearic acid in the non-ionic polymer is replaced with octanoic acid, the stability at high and low temperatures all shows slight turbidity and stratification. Comparative Example 2 replaces the non-ionic polymer in the detergent composition, which cannot play the role of encapsulation and solubilization. The room temperature, high temperature, and low temperature samples all show stratification, and the stability of the detergent composition is poor.

[0094] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations that come within the meaning and range of equivalents of the claims be embraced therein.

[0095] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A detergent composition with enhanced cleaning power, characterized in that It is composed of the following components in mass fraction: Solvent 20-40wt% Surfactant 30-60wt% Nonionic polymer 1-5wt% Protease 0.5-5wt% Cellulase 0.5-5wt% Additives 0.1-10wt% Water balance; in, The nonionic polymer is a product obtained by the reaction of glycerol, stearic acid and ethylene oxide; The preparation method of the nonionic polymer comprises the following steps: S1. Under nitrogen protection, glycerol and stearic acid were mixed, lead oxide was added, and the reaction was heated to obtain an intermediate product; S2. Under nitrogen, the intermediate product and the catalyst were added, stirred, and then ethylene oxide was added, heated to react, and purified to obtain a nonionic polymer; The surfactants include anionic surfactants, nonionic surfactants, amphoteric surfactants, and cationic surfactants; The cellulase is selected from one or more of endocellulase, exocellulase, cellobiase, oxidative cellulase and cellulose phosphorylase; The molar ratio of the glycerol to the stearic acid is 1:2-4; the molar ratio of the intermediate product to the ethylene oxide is 1:6-10; In step S1, the temperature of the heating reaction is 175-185°C; in step S2, the temperature of the heating reaction is 145-155°C.

2. The detergent composition with enhanced cleaning power according to claim 1, wherein The protease is selected from one or more of cysteine ​​protease, metalloprotease, serine protease and aspartic acid protease.

3. The detergent composition with enhanced cleaning power according to claim 1, wherein The auxiliary agent is selected from one or more of preservatives, anti-redeposition agents, flavors, pigments, and alkali metal halide salts; The solvent is selected from one or more of ethanol, glycerol, propylene glycol, sorbitol, polyethylene glycol, diethylene glycol butyl ether, dipropylene glycol methyl ether, tripropylene glycol methyl ether, diethylene glycol butyl ether acetate, dipropylene glycol butyl ether, and tripropylene glycol butyl ether.

4. Use of the detergent composition with enhanced cleaning power according to any one of claims 1 to 3 in laundry detergent beads products.

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