Highly concentrated environmentally friendly laundry composition and preparation method

Abstract

The present invention provides a highly concentrated, environmentally friendly laundry composition and preparation method, belonging to the technical field of concentrated laundry products. The laundry composition of the present invention comprises: a narrow distribution fatty alcohol polyoxyethylene ether AEO7 / AEO9 mixture, isomeric alcohol ethers, fatty alcohol polyoxyethylene ether sodium sulfate, microcrystalline cellulose, microcapsule plant essential oil, sodium citrate, tetrasodium glutamate diacetate, sodium polyaspartate, microcapsule biological enzymes and preservatives. The narrow distribution fatty alcohol polyoxyethylene ether AEO7 / AEO9 mixture, isomeric alcohol ethers and AES surfactants have a synergistic effect, can improve low-temperature stability, optimize the hydrophilic-lipophilic balance, adapt to different water quality and temperature conditions, can still maintain a micellar structure after being diluted 30 times, has a high viscosity, and has excellent foaming performance and detergency.

Description

Technical Field

[0001] The present invention relates to the technical field of concentrated laundry products, and in particular to a highly concentrated and environmentally friendly laundry composition and a preparation method thereof. Background Art

[0002] With increasing emphasis on environmental protection and resource conservation, the detergent industry is rapidly developing towards high concentration, low-temperature compatibility, and eco-friendliness. Traditional laundry detergents often suffer from high water content, uneven dispersion of active ingredients, and easy precipitation at low temperatures. These issues not only increase packaging and transportation costs, but also put pressure on aquatic ecosystems due to the use of ingredients like phosphates and fluorescent brighteners. Furthermore, existing concentrated detergents often experience problems such as micelle structure destruction and active ingredient sedimentation upon dilution, resulting in diminished detergency. Therefore, developing laundry detergent formulas that combine high concentration, low-temperature stability, environmental performance, and dilution adaptability has become a core area of ​​technical research for the industry.

[0003] In the field of surfactant compounding, traditional nonionic surfactants suffer from a wide distribution of ethylene oxide (EO) addition numbers, resulting in significant variations in molecular polarity and dispersed cloud points, making them prone to turbidity or stratification at low temperatures. Furthermore, anionic / nonionic compound systems often experience a mismatch in the hydrophilic-lipophilic balance, leading to an elevated critical micelle concentration. This significantly reduces micelle stability, particularly in hard water conditions where ionic strength increases.

[0004] In terms of thickening and suspension systems, traditional formulations often use acrylic polymers or inorganic salts for thickening, but these can easily cause phase separation or shear thinning in concentrated systems. While cellulose thickeners offer environmental advantages, their linear molecular structure tends to form dense gels at high concentrations. This network structure quickly disintegrates upon dilution, making it difficult to maintain suspension stability. Summary of the Invention

[0005] The object of the present invention is to provide a highly concentrated and environmentally friendly laundry composition and a preparation method thereof. The laundry composition provided by the present invention has strong stability and can improve foam performance and detergency.

[0006] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions:

[0007] The invention provides a highly concentrated and environmentally friendly laundry composition, comprising the following components in parts by weight: 15-35 parts of a narrow distribution fatty alcohol polyoxyethylene ether AEO7 / AEO9 mixture, 5-15 parts of isomeric alcohol ethers, 5-15 parts of fatty alcohol polyoxyethylene ether sodium sulfate, 0.5-1.5 parts of microcrystalline cellulose, 0.5-1.5 parts of microencapsulated plant essential oil, 2-5 parts of sodium citrate, 0.5-3 parts of tetrasodium glutamate diacetate, 0.5-1.5 parts of sodium polyaspartate, 0.05-0.15 parts of microencapsulated biological enzymes, and 0.05-0.3 parts of a preservative.

[0008] Preferably, the weight ratio of AEO7 to AEO9 in the narrow distribution fatty alcohol polyoxyethylene ether AEO7 / AEO9 mixture is 1-3:1.

[0009] Preferably, the isomeric alcohol ether is one or more of C10 isomeric alcohol ether 7EO, C10 isomeric alcohol ether 9EO, and isomeric tridecyl alcohol polyoxyethylene (5) ether.

[0010] Preferably, the method for preparing the microcapsule plant essential oil comprises: mixing the plant essential oil with polyethylene glycol, stirring (high speed) shearing, adding carboxymethyl chitosan for cross-linking, and centrifuging to obtain the microcapsule plant essential oil.

[0011] Preferably, the microcapsule plant essential oil is one or more of lavender essential oil, chamomile essential oil, and orange blossom essential oil.

[0012] Preferably, the preparation method of the microencapsulated bioenzyme comprises: mixing and emulsifying the bioenzyme solution with a sodium alginate solution, dropping into a calcium chloride solution for cross-linking to obtain microspheres, mixing with a carboxymethyl chitosan solution, coating, and drying to obtain the microencapsulated bioenzyme.

[0013] Preferably, the biological enzyme is one or more of protease, lipase and mannanase.

[0014] Preferably, the preservative is 1,2-hexanediol or anisic acid.

[0015] The present invention also provides a method for preparing the laundry composition, comprising: mixing sodium citrate, tetrasodium glutamate diacetate, sodium polyaspartate and water and heating to obtain a chelate system; heating and mixing a narrow distribution fatty alcohol polyoxyethylene ether AEO7 / AEO9 mixture, isomeric alcohol ethers and fatty alcohol polyoxyethylene ether sodium sulfate, adding the mixture to the chelate system, stirring (high speed) and shearing, adding microencapsulated plant essential oil, microencapsulated biological enzyme, microcrystalline cellulose and a preservative, and homogenizing to obtain the laundry composition.

[0016] Preferably, the stirring (high-speed) shearing speed is 1500-2500 rpm, and the time is 6-10 min.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The present invention provides a highly concentrated, environmentally friendly laundry composition comprising a narrowly distributed fatty alcohol polyoxyethylene ether (AEO7 / AEO9) mixture, isomeric alcohol ethers, sodium fatty alcohol polyoxyethylene ether sulfate, microcrystalline cellulose, microencapsulated plant essential oils, sodium citrate, tetrasodium glutamate diacetate, sodium polyaspartate, microencapsulated enzymes, and a preservative. The narrowly distributed fatty alcohol polyoxyethylene ether (AEO7 / AEO9) mixture, isomeric alcohol ethers, and AES surfactants exhibit a synergistic effect, improving low-temperature stability and foam performance, optimizing the hydrophilic-lipophilic balance, adapting to varying water quality and temperature conditions, and maintaining a micellar structure after dilution to prevent phase separation. Microencapsulation technology effectively addresses the issues of traditional detergent active ingredients being easily inactivated and having a short fragrance retention time. Experimental results demonstrate that the combined surfactants synergistically improve stability, foam performance, and detergency, maintaining high viscosity and detergency even after a 30-fold dilution. This invention integrates surfactant compounding technology, a microencapsulation controlled-release process, and an environmentally friendly chelating system, aligning with the industry trend toward high concentration and low environmental impact. DETAILED DESCRIPTION

[0019] The invention provides a highly concentrated and environmentally friendly laundry composition, comprising the following components in parts by weight: 15-35 parts of a narrow distribution fatty alcohol polyoxyethylene ether AEO7 / AEO9 mixture, 5-15 parts of isomeric alcohol ethers, 5-15 parts of fatty alcohol polyoxyethylene ether sodium sulfate, 0.5-1.5 parts of microcrystalline cellulose, 0.5-1.5 parts of microencapsulated plant essential oil, 2-5 parts of sodium citrate, 0.5-3 parts of tetrasodium glutamate diacetate, 0.5-1.5 parts of sodium polyaspartate, 0.05-0.15 parts of microencapsulated biological enzymes, and 0.05-0.3 parts of a preservative.

[0020] The narrowly distributed AEO7 / AEO9 mixture of fatty alcohol polyoxyethylene ethers described herein preferably has a weight ratio of AEO7 to AEO9 of 1-3:1, more preferably 2:1. The EO distribution coefficient (CV) of the narrowly distributed AEO7 / AEO9 mixture is ≤15%. The narrowly distributed AEO7 / AEO9 mixture of the present invention exhibits more uniform molecular size, lowering the cloud point and improving low-temperature stability.

[0021] The isomeric alcohol ethers of the present invention are one or more of C10 isomeric alcohol ether 7EO, C10 isomeric alcohol ether 9EO, and isomeric tridecanol polyoxyethylene (5) ether. The isomeric alcohol ethers of the present invention have branched hydrophobic groups that disrupt the regular molecular arrangement, resulting in a lower freezing point (still liquid at -5°C), making them suitable for cold water washing. They also improve the low-temperature solubility and hard water resistance of laundry compositions. When used in combination with AEO7 / AEO9 or AES, they can reduce the critical micelle concentration and enhance interfacial adsorption.

[0022] The sodium fatty alcohol polyoxyethylene ether sulfate described in the present invention can significantly reduce the surface tension of water. When compounded with non-ionic surfactants (such as AEO and isomeric alcohol ethers), it can form mixed micelles, thereby increasing surface activity and reducing the critical micelle concentration. Even after dilution, it can still maintain the micelle structure, prevent phase separation, and enhance the emulsification ability of hydrophobic stains (such as edible oil and sebum). When compounded with microcrystalline cellulose, the negative charge of the sodium fatty alcohol polyoxyethylene ether sulfate is adsorbed on the fiber surface, forming an electrostatic barrier, reducing dirt re-adhesion, and improving the detergency.

[0023] The present invention combines "a narrow distribution fatty alcohol polyoxyethylene ether AEO7 / AEO9 mixture, isomeric alcohol ethers and fatty alcohol polyoxyethylene ether sodium sulfate" to optimize the hydrophilic-lipophilic balance and HLB value matching, adapting to various water quality and temperature conditions. It can achieve: the micellar structure can achieve high active substance loading and low-temperature stability; broad-spectrum decontamination (improving the removal rate of grease / protein / particulate stains); improved hard water adaptability and low-temperature adaptability; green and sustainable.

[0024] The method for preparing microencapsulated plant essential oils described herein preferably comprises: mixing the plant essential oil with polyethylene glycol, stirring (high-speed) shearing, adding carboxymethyl chitosan for crosslinking, and centrifuging to obtain the microencapsulated plant essential oil. The microencapsulated plant essential oil is preferably one or more of lavender essential oil, chamomile essential oil, and neroli essential oil. Microencapsulating the plant essential oil using aspects of the present invention improves its stability and prevents reactions with other components of the composition that could affect the cleaning effect. Furthermore, polyethylene glycol, a water-soluble component, dissolves rapidly during the washing process, releasing some of the essential oil. During the wearing phase, the carboxymethyl chitosan slowly releases the remaining essential oil through fiber friction and changes in sweat pH, thereby extending the fragrance's longevity.

[0025] The method for preparing the microencapsulated enzyme of the present invention preferably comprises: emulsifying the enzyme solution with a sodium alginate solution, mixing with a carboxymethyl chitosan solution, coating, dripping into a glutaraldehyde solution for crosslinking, washing with PBS and deionized water, and drying to obtain the microencapsulated enzyme. The enzyme preferably comprises a protease, a lipase, and a mannanase. The sodium alginate-carboxymethyl chitosan double-layer microcapsule structure in the microencapsulated enzyme can isolate the anionic surfactant in the laundry composition, preventing the enzyme from being degraded in activity and improving the enzyme's stability. During the washing process, mechanical friction destroys the outer chitosan layer of the microcapsule, gradually releasing the enzyme preparation, avoiding waste caused by a one-time release, and improving the detergency performance of the protease, lipase, and mannanase.

[0026] The preservative of the present invention is preferably 1,2-hexanediol or anisic acid.

[0027] The present invention also provides a preparation method of the above-mentioned laundry composition, comprising: mixing sodium citrate, tetrasodium glutamate diacetate, sodium polyaspartate and water and heating them to obtain a chelate system; heating and mixing a narrow distribution fatty alcohol polyoxyethylene ether AEO7 / AEO9 mixture, isomeric alcohol ethers and fatty alcohol polyoxyethylene ether sodium sulfate, adding the mixture to the chelate system, stirring and shearing, adding microcapsule plant essential oil, microcapsule biological enzyme, microcrystalline cellulose and preservatives, and homogenizing to obtain the laundry composition.

[0028] The rotation speed of the stirring and shearing process of the present invention is preferably 1500-2500 rpm, more preferably 2000 rpm, and the time is preferably 6-10 min, more preferably 8 min.

[0029] In the present invention, unless otherwise specified, all raw material components are commercially available products well known to those skilled in the art.

[0030] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions of the present invention. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] In the following examples, unless otherwise specified, all methods are conventional.

[0032] Unless otherwise specified, the materials and reagents used in the following examples can be obtained from commercial sources.

[0033] Lavender essential oil was purchased from Guangzhou Qianxiangyuan Essential Oil Co., Ltd.; chamomile essential oil was purchased from Guangzhou Qianxiangyuan Essential Oil Co., Ltd.; orange blossom essential oil was purchased from Guangzhou Qianxiangyuan Essential Oil Co., Ltd.; polyethylene glycol 400 was purchased from Tianjin Zhonghe Shengtai Chemical Co., Ltd.; carboxymethyl chitosan was purchased from Xi'an Xihai Biotechnology Co., Ltd.; protease was purchased from Shandong Yousuo Chemical Technology Co., Ltd.; lipase was purchased from Guangzhou Xumei Chemical Technology Co., Ltd.; mannanase was purchased from Zhejiang Weihong Biotechnology Co., Ltd.; fatty alcohol polyoxyethylene ether AEO7 was purchased from Guangzhou Cansheng Chemical Co., Ltd.; fatty alcohol polyoxyethylene ether AEO9 was purchased from Guangzhou Cansheng Chemical Co., Ltd.; fatty alcohol polyoxyethylene ether sodium sulfate was purchased from Shandong Shunxing Chemical Co., Ltd.; microcrystalline cellulose was purchased from Wuxi Shengshi Hongcheng Biotechnology Co., Ltd.

[0034] The w / v appearing in the Examples and Comparative Examples refers to the mass volume concentration. Taking a 2% (w / v) sodium alginate solution as an example, it means that 2 g of sodium alginate is contained in every 100 mL of the solution.

[0035] Example 1

[0036] Highly concentrated environmentally friendly laundry composition

[0037] (1) Preparation of microencapsulated plant essential oils

[0038] Lavender essential oil and 15wt% polyethylene glycol 400 aqueous solution were mixed in a mass ratio of 1:4, and shear emulsified at a temperature of 45°C and a rotation speed of 1000 rpm for 15 minutes. The mixture was cooled to 27°C, and carboxymethyl chitosan was added (the addition amount was 3% of the mass of the lavender essential oil). The pH was adjusted to 5, and the mixture was allowed to stand for cross-linking for 3 hours. The mixture was centrifuged, washed with deionized water three times, and dried to obtain microencapsulated plant essential oil.

[0039] (2) Preparation of microencapsulated enzymes

[0040] A 5 mg / mL protease solution (obtained by mixing protease with phosphate buffer) was mixed with a 2% (w / v) sodium alginate solution at a volume ratio of 1:2, emulsified at 300 rpm for 10 min, and then mixed with a 1% (w / v) carboxymethyl chitosan solution at a volume ratio of 1:3. After coating for 30 min, the mixture was dropped into a 0.8% (w / v) glutaraldehyde solution and stirred at 4°C and 25 rpm for 3 h. The microspheres were collected, washed three times with PBS and three times with deionized water, and dried to obtain microencapsulated protease.

[0041] Microencapsulated lipase and microencapsulated mannan were prepared in exactly the same way.

[0042] The microencapsulated protease, microencapsulated lipase and microencapsulated mannanase were mixed in a mass ratio of 5:3:2 to obtain a microencapsulated bioenzyme;

[0043] (3) Weighing

[0044] Accurately weigh 20 parts of a narrow distribution fatty alcohol polyoxyethylene ether AEO7 / AEO9 mixture, 10 parts of C10 isomeric alcohol ether 7EO, 10 parts of fatty alcohol polyoxyethylene ether sodium sulfate, 1 part of microcrystalline cellulose, 1 part of microencapsulated plant essential oil, 3 parts of sodium citrate, 2 parts of tetrasodium glutamate diacetate, 1 part of sodium polyaspartate, 0.1 part of microencapsulated biological enzyme, and 0.1 part of 1,2-hexanediol. The narrow distribution fatty alcohol polyoxyethylene ether AEO7 / AEO9 mixture consists of AEO7 and AEO9 in a weight ratio of 2:1;

[0045] (4) Preparation of laundry composition

[0046] The microcrystalline cellulose was mixed with 15 parts of deionized water, homogenized at 2000 rpm for 15 minutes, and then ultrasonicated at 20 kHz for 5 minutes to obtain a microcrystalline cellulose colloid; tetrasodium glutamate diacetate was mixed with 10 parts of 35°C deionized water to obtain a tetrasodium glutamate diacetate solution; sodium polyaspartate was mixed with 8 parts of 35°C deionized water to obtain a sodium polyaspartate solution; sodium fatty alcohol polyoxyethylene ether sulfate was mixed with 20 parts of deionized water to obtain a sodium fatty alcohol polyoxyethylene ether sulfate solution; narrow distribution fatty alcohol polyoxyethylene ether AEO7 / A The EO9 mixture, C10 isomeric alcohol ether 7EO and fatty alcohol polyoxyethylene ether sodium sulfate solution were mixed and stirred at 50° C. and 400 rpm for 30 minutes. Sodium citrate, tetrasodium glutamate diacetate solution and sodium polyaspartate solution were added in sequence. After stirring for 25 minutes, microcrystalline cellulose colloid was added and stirring was continued for 15 minutes. The temperature was lowered to 30° C., microencapsulated plant essential oil, microencapsulated organisms and 1,2-hexanediol were added, and stirring was carried out at 200 rpm for 20 minutes. The pH value was adjusted to 7.2, and sterilization was performed to obtain the laundry composition.

[0047] Example 2

[0048] Highly concentrated environmentally friendly laundry composition

[0049] (1) Preparation of microencapsulated plant essential oils

[0050] Chamomile essential oil and 13wt% polyethylene glycol 400 aqueous solution were mixed in a mass ratio of 1:5, and shear emulsified at a temperature of 40°C and a rotation speed of 900 rpm for 18 minutes. The mixture was cooled to 25°C, and carboxymethyl chitosan was added (the amount added was 2.5% of the mass of the chamomile essential oil). The pH was adjusted to 4.8, and the mixture was allowed to stand for cross-linking for 2.5 hours. The mixture was centrifuged, washed twice with deionized water, and dried to obtain microencapsulated plant essential oil.

[0051] (2) Preparation of microencapsulated enzymes

[0052] A 4 mg / mL protease solution (obtained by mixing protease with phosphate buffer) was mixed with a 1% (w / v) sodium alginate solution at a volume ratio of 1:1.5, emulsified at 250 rpm for 15 min, and then mixed with a 0.8% (w / v) carboxymethyl chitosan solution at a volume ratio of 1:2. After coating for 35 min, the mixture was dropped into a 0.5% (w / v) glutaraldehyde solution and stirred at 2°C and 22 rpm for 3.5 h. The microspheres were collected, washed three times with PBS and three times with deionized water, and dried to obtain microencapsulated protease.

[0053] Microencapsulated lipase and microencapsulated mannan were prepared in exactly the same way.

[0054] Mixing microencapsulated protease, microencapsulated lipase and microencapsulated mannanase in a mass ratio of 4:2:1 to obtain microencapsulated bioenzyme;

[0055] (3) Weighing

[0056] Accurately weigh 15 parts of a narrow distribution fatty alcohol polyoxyethylene ether AEO7 / AEO9 mixture, 5 parts of C10 isomeric alcohol ether 9EO, 5 parts of fatty alcohol polyoxyethylene ether sodium sulfate, 0.5 parts of microcrystalline cellulose, 0.5 parts of microencapsulated plant essential oil, 2 parts of sodium citrate, 0.5 parts of tetrasodium glutamate diacetate, 0.5 parts of sodium polyaspartate, 0.05 parts of microencapsulated biological enzymes, and 0.05 parts of anisic acid. The narrow distribution fatty alcohol polyoxyethylene ether AEO7 / AEO9 mixture consists of AEO7 and AEO9 in a weight ratio of 1:1.

[0057] (4) Preparation of laundry composition

[0058] The microcrystalline cellulose was mixed with 10 parts of deionized water, homogenized at 1500 rpm for 20 minutes, and then ultrasonicated at 18 kHz for 8 minutes to obtain microcrystalline cellulose colloid; tetrasodium glutamate diacetate was mixed with 8 parts of 30°C deionized water to obtain tetrasodium glutamate diacetate solution; sodium polyaspartate was mixed with 5 parts of 30°C deionized water to obtain sodium polyaspartate solution; sodium fatty alcohol polyoxyethylene ether sulfate was mixed with 15 parts of deionized water to obtain sodium fatty alcohol polyoxyethylene ether sulfate solution; narrow distribution fatty alcohol polyoxyethylene ether AEO7 / The AEO9 mixture, C10 isomeric alcohol ether 9EO and fatty alcohol polyoxyethylene ether sodium sulfate solution were mixed and stirred at 48° C. and 350 rpm for 35 minutes. Sodium citrate, tetrasodium glutamate diacetate solution and sodium polyaspartate solution were added in sequence. The mixture was stirred for 30 minutes. Microcrystalline cellulose colloid was added and stirred for 20 minutes. The mixture was cooled to 28° C., microencapsulated plant essential oil, microencapsulated organisms and anisic acid were added, and the mixture was stirred at 180 rpm for 25 minutes. The pH value was adjusted to 7.5, and the mixture was sterilized to obtain the laundry composition.

[0059] Example 3

[0060] Highly concentrated environmentally friendly laundry composition

[0061] (1) Preparation of microencapsulated plant essential oils

[0062] Orange blossom essential oil and 18wt% polyethylene glycol 400 aqueous solution were mixed in a mass ratio of 1:5, stirred and sheared emulsified at a temperature of 48°C and a rotation speed of 1500rpm for 12 minutes, cooled to 30°C, and carboxymethyl chitosan was added (the addition amount was 4% of the mass of orange blossom essential oil). The pH was adjusted to 5.6, and the mixture was allowed to stand for cross-linking for 2 hours. The mixture was centrifuged, washed with deionized water 4 times, and dried to obtain microencapsulated plant essential oil.

[0063] (2) Preparation of microencapsulated enzymes

[0064] A 6 mg / mL protease solution (obtained by mixing protease with phosphate buffer) was mixed with a 3% (w / v) sodium alginate solution at a volume ratio of 1:4, emulsified at 350 rpm for 8 min, and then mixed with a 1.5% (w / v) carboxymethyl chitosan solution at a volume ratio of 1:4. After coating for 25 min, the mixture was dropped into a 0.9% (w / v) glutaraldehyde solution and stirred at 5°C and 30 rpm for 2.5 h. The microspheres were collected, washed three times with PBS and three times with deionized water, and dried to obtain microencapsulated protease.

[0065] Microencapsulated lipase and microencapsulated mannan were prepared in exactly the same way.

[0066] The microencapsulated protease, microencapsulated lipase and microencapsulated mannanase were mixed in a mass ratio of 6:4:3 to obtain a microencapsulated bioenzyme;

[0067] (3) Weighing

[0068] Accurately weigh 35 parts of a narrow distribution fatty alcohol polyoxyethylene ether AEO7 / AEO9 mixture, 15 parts of isomeric tridecyl alcohol polyoxyethylene (5) ether, 15 parts of fatty alcohol polyoxyethylene ether sodium sulfate, 1.5 parts of microcrystalline cellulose, 1.5 parts of microencapsulated plant essential oil, 5 parts of sodium citrate, 3 parts of tetrasodium glutamate diacetate, 1.5 parts of sodium polyaspartate, 0.15 parts of microencapsulated biological enzyme and 0.3 parts of 1,2-hexanediol. The narrow distribution fatty alcohol polyoxyethylene ether AEO7 / AEO9 mixture consists of AEO7 and AEO9 in a weight ratio of 3:1;

[0069] (4) Preparation of laundry composition

[0070] The microcrystalline cellulose was mixed with 20 parts of deionized water, homogenized at 2500 rpm for 12 minutes, and then ultrasonicated at 25 kHz for 4 minutes to obtain microcrystalline cellulose colloid; tetrasodium glutamate diacetate was mixed with 15 parts of 38°C deionized water to obtain tetrasodium glutamate diacetate solution; sodium polyaspartate was mixed with 10 parts of 38°C deionized water to obtain sodium polyaspartate solution; sodium fatty alcohol polyoxyethylene ether sulfate was mixed with 28 parts of deionized water to obtain sodium fatty alcohol polyoxyethylene ether sulfate solution; narrow distribution fatty alcohol polyoxyethylene ether AEO7 / AE was mixed with 10 parts of 38°C deionized water to obtain sodium polyaspartate solution; sodium fatty alcohol polyoxyethylene ether sulfate was mixed with 28 parts of deionized water to obtain sodium fatty alcohol polyoxyethylene ether sulfate solution; narrow distribution fatty alcohol polyoxyethylene ether AEO7 / AE was mixed with 10 parts of 38°C deionized water to obtain sodium fatty alcohol polyoxyethylene ether solution; sodium fatty alcohol polyoxyethylene ether sulfate ... The O9 mixture, isomeric tridecyl alcohol polyoxyethylene (5) ether and fatty alcohol polyoxyethylene ether sodium sulfate solution are mixed, stirred at 55° C. and 450 rpm for 20 min, sodium citrate, tetrasodium glutamate diacetate solution and sodium polyaspartate solution are added in sequence, and stirring is continued for 23 min. Microcrystalline cellulose colloid is added and stirring is continued for 13 min. The temperature is lowered to 32° C., microcapsule plant essential oil, microcapsule organisms and 1,2-hexanediol are added, and stirring is continued at 250 rpm for 18 min. The pH value is adjusted to 7.8, and sterilization is performed to obtain the laundry composition.

[0071] Comparative Example 1

[0072] The specific implementation method is the same as Example 1, except that "20 parts of narrow distribution fatty alcohol polyoxyethylene ether AEO7 / AEO9 mixture, 10 parts of C10 isomeric alcohol ether 7EO, and 10 parts of fatty alcohol polyoxyethylene ether sodium sulfate" are replaced by "40 parts of narrow distribution fatty alcohol polyoxyethylene ether AEO7 / AEO9 mixture".

[0073] Comparative Example 2

[0074] The specific implementation method is the same as Example 1, except that "20 parts of narrow distribution fatty alcohol polyoxyethylene ether AEO7 / AEO9 mixture, 10 parts of C10 isomeric alcohol ether 7EO, and 10 parts of fatty alcohol polyoxyethylene ether sodium sulfate" are replaced by "40 parts of C10 isomeric alcohol ether 7EO".

[0075] Comparative Example 3

[0076] The specific implementation method is the same as Example 1, except that "20 parts of narrow distribution fatty alcohol polyoxyethylene ether AEO7 / AEO9 mixture, 10 parts of C10 isomeric alcohol ether 7EO, and 10 parts of fatty alcohol polyoxyethylene ether sodium sulfate" are replaced by "40 parts of fatty alcohol polyoxyethylene ether sodium sulfate".

[0077] Comparative Example 4

[0078] The specific implementation method is the same as that of Example 1, except that "20 parts of narrow distribution fatty alcohol polyoxyethylene ether AEO7 / AEO9 mixture, 10 parts of C10 isomeric alcohol ether 7EO, and 10 parts of fatty alcohol polyoxyethylene ether sodium sulfate" are replaced by "26.7 parts of narrow distribution fatty alcohol polyoxyethylene ether AEO7 / AEO9 mixture, and 13.3 parts of C10 isomeric alcohol ether 7EO".

[0079] Comparative Example 5

[0080] The specific implementation method is the same as that of Example 1, except that "20 parts of a narrow distribution fatty alcohol polyoxyethylene ether AEO7 / AEO9 mixture, 10 parts of C10 isomeric alcohol ether 7EO, and 10 parts of sodium fatty alcohol polyoxyethylene ether sulfate" are replaced by "26.7 parts of a narrow distribution fatty alcohol polyoxyethylene ether AEO7 / AEO9 mixture, and 13.3 parts of sodium fatty alcohol polyoxyethylene ether sulfate."

[0081] Comparative Example 6

[0082] The specific implementation method is the same as that of Example 1, except that "20 parts of narrow distribution fatty alcohol polyoxyethylene ether AEO7 / AEO9 mixture, 10 parts of C10 isomeric alcohol ether 7EO, and 10 parts of fatty alcohol polyoxyethylene ether sodium sulfate" are replaced by "20 parts of C10 isomeric alcohol ether 7EO, and 20 parts of fatty alcohol polyoxyethylene ether sodium sulfate".

[0083] Comparative Example 7

[0084] The specific implementation is the same as that of Example 1, except that the microcapsule plant essential oil is replaced with lavender essential oil, and step (1) is deleted.

[0085] Comparative Example 8

[0086] The specific implementation is the same as that of Example 1, except that the microcapsule bioenzyme is replaced with a bioenzyme composed of protease, lipase and mannanase in a weight ratio of 5:3:2, and step (2) is deleted.

[0087] Test Example 1

[0088] Performance Testing

[0089] (1) Stability

[0090] The stability of the laundry compositions of Examples 1 to 3 and Comparative Examples 1 to 8 was measured respectively. The stability test of the laundry compositions was carried out with reference to the patent CN113493724B.

[0091] The stability test method is:

[0092] The composition was placed at 50°C, 40°C, 25°C and 4°C for 7 days to investigate the system stability of the laundry composition. After one week, it was observed whether there was obvious stratification and surface impurities. For each comparative example, 50 samples were tested. If less than 5 samples failed, they were rated as Class A; if 5 or more but less than 10 samples failed, they were rated as Class B; and if 10 or more samples failed, they were rated as Class C. The observation results are recorded in Table 1.

[0093] Table 1 Stability of different laundry compositions

[0094] Group 50℃ 40℃ 25℃ -4℃ Example 1 A A A A Example 2 A A A A Example 3 A A A A Comparative Example 1 C C B C Comparative Example 2 C C B C Comparative Example 3 B B A A Comparative Example 4 B B B B Comparative Example 5 B B A B Comparative Example 6 B B A B Comparative Example 7 A A A A Comparative Example 8 A A A A

[0095] As shown in Table 1, the laundry compositions of Examples 1-3 and Comparative Examples 7-8 exhibit strong overall stability, indicating that the stabilizing ingredients are the narrowly distributed AEO7 / AEO9 fatty alcohol polyoxyethylene ether mixture, C10 isomeric alcohol ether 7EO, and sodium fatty alcohol polyoxyethylene ether sulfate. As shown in Example 1 and Comparative Examples 1-6, high and low temperatures can affect the stability of laundry compositions. Sodium fatty alcohol polyoxyethylene ether sulfate improves the stability of laundry compositions more than the narrowly distributed AEO7 / AEO9 fatty alcohol polyoxyethylene ether mixture and C10 isomeric alcohol ether 7EO. The combined use of these three ingredients significantly enhances stability.

[0096] (2) Viscosity test

[0097] 20g of each laundry composition from Examples 1-3 and Comparative Examples 1-8 was placed in a beaker and diluted 10-fold and 30-fold with 25°C, 250 ppm hard water. The viscosity before and after dilution was measured at 25°C using a rotational viscometer according to QB / T 1224-2012, "Liquid Detergents for Clothing." This was repeated three times and the average value was calculated. The results are shown in Table 2.

[0098] Table 2 Viscosity of different laundry compositions before and after dilution

[0099] Group Before dilution (mPa·s) Diluted 10 times (mPa·s) Diluted 30 times (mPa·s) Example 1 20963 5356 1104 Example 2 19748 4729 993 Example 3 20081 5292 1047 Comparative Example 1 15317 3564 654 Comparative Example 2 12059 2588 561 Comparative Example 3 15424 3507 703 Comparative Example 4 17850 4030 816 Comparative Example 5 16105 3835 757 Comparative Example 6 16572 3671 770 Comparative Example 7 19291 4918 952 Comparative Example 8 19636 4843 925

[0100] As shown in Table 2, overall, the laundry compositions of Examples 1-3 exhibit the highest viscosity at all dilutions. A comparison of Example 1 with Comparative Examples 1-6 demonstrates that the narrowly distributed AEO7 / AEO9 fatty alcohol polyoxyethylene ether mixture, C10 isomeric alcohol ether 7EO, and sodium fatty alcohol polyoxyethylene ether sulfate are the primary factors determining viscosity; their combined use can increase the viscosity of the laundry composition. A comparison of Example 1 with Comparative Examples 7-8 demonstrates that microencapsulation has no significant effect on the viscosity of the laundry composition.

[0101] (3) Foam performance

[0102] The laundry compositions of Examples 1-3 and Comparative Examples 1-8 were diluted 30-fold with 150 ppm hard water and then tested at a concentration of 0.3%. According to QB / T 7462-1994, 150 ppm hard water was used and a Roche foam meter was used to measure the foam height at 40°C, at the instant, 5 minutes, and 20 minutes later. The average value was obtained by repeating this three times. The specific results are shown in Table 3.

[0103] Table 3 Foaming performance of different laundry compositions

[0104] Group Starting (mm) 5min (mm) 20min (mm) Example 1 75.7 74.8 70.7 Example 2 73.5 72.6 67.5 Example 3 74.8 73.4 68.9 Comparative Example 1 65.2 60.1 53.2 Comparative Example 2 60.4 55.3 50.5 Comparative Example 3 70.9 65.9 61.3 Comparative Example 4 68.0 63.0 58.1 Comparative Example 5 67.4 62.4 57.6 Comparative Example 6 66.1 61.2 56.0 Comparative Example 7 72.3 70.7 65.4 Comparative Example 8 71.6 69.5 64.8

[0105] As shown in Table 3, Examples 1-3 exhibit the highest foam height and the best foam duration, demonstrating that the example formulations can improve the foam performance of laundry compositions. A comparison of Example 1 with Comparative Examples 1-6 demonstrates that the combination of a narrowly distributed fatty alcohol polyoxyethylene ether AEO7 / AEO9 mixture, C10 isomeric alcohol ether 7EO, and sodium fatty alcohol polyoxyethylene ether sulfate can enhance the foam height and duration of a laundry composition. A comparison of Example 1 with Comparative Examples 7-8 demonstrates that microencapsulation has a limited effect on the foam performance of a laundry composition.

[0106] (4) Decontamination performance

[0107] The stain removal performance of the laundry compositions of Examples 1-3 and Comparative Examples 1-8 was measured using QBT1224-2012, "Liquid Detergents for Clothing." The laundry compositions were tested at a 0.1% concentration (using 250 ppm hard water to form a solution), with four replicates per test. The ratios of the stain removal values ​​of the laundry compositions on carbon black-stained cloth JB-01, protein-stained cloth JB-02, and sebum-stained cloth JB-03 to the stain removal values ​​of standard laundry detergents are shown in Table 4. Washing was performed using 250 ppm hard water.

[0108] The laundry compositions of Examples 1-3 and Comparative Examples 1-8 were diluted 30 times with 250 ppm hard water, and their detergency was measured using QBT1224-2012. Four samples were tested in parallel for each test. The results are shown in Table 5.

[0109] Table 4 Detergency of different laundry compositions

[0110] Group JB-01 detergency JB-02 detergency JB-03 detergency Example 1 1.28 1.36 1.30 Example 2 1.21 1.29 1.22 Example 3 1.26 1.33 1.29 Comparative Example 1 1.04 0.95 0.94 Comparative Example 2 0.98 1.01 0.86 Comparative Example 3 1.03 0.87 1.07 Comparative Example 4 1.15 1.04 1.00 Comparative Example 5 1.19 0.96 1.11 Comparative Example 6 1.07 1.15 1.13 Comparative Example 7 1.12 1.16 1.08 Comparative Example 8 1.10 1.08 1.05

[0111] Table 5 Decontamination ability of different laundry compositions after 30-fold dilution

[0112] Group JB-01 detergency JB-02 detergency JB-03 detergency Example 1 1.13 1.05 1.12 Example 2 1.08 1.02 1.05 Example 3 1.10 1.04 1.09 Comparative Example 1 0.90 0.82 0.83 Comparative Example 2 0.85 0.88 0.74 Comparative Example 3 0.89 0.75 0.93 Comparative Example 4 1.00 0.90 0.87 Comparative Example 5 1.03 0.83 0.96 Comparative Example 6 0.93 1.02 0.98 Comparative Example 7 0.98 1.03 0.94 Comparative Example 8 0.95 0.94 0.91

[0113] As shown in Tables 4-5, overall, the laundry compositions of Examples 1-3 outperformed the comparative examples in detergency both before and after dilution, with significant improvement on JB-02 and JB-03, demonstrating that the formula design of the examples offers significant advantages in detergency. A comparison of Example 1 with Comparative Examples 1-6 reveals that while the narrowly distributed fatty alcohol polyoxyethylene ether AEO7 / AEO9 mixture, C10 isomeric alcohol ether 7EO, and sodium fatty alcohol polyoxyethylene ether sulfate all exhibit varying degrees of detergency against carbon black, protein, and sebum, the laundry compositions prepared using these ingredients individually or in combination do not perform as well against these three factors as the combined combination. Example 1 and Comparative Examples 7-8 demonstrate that non-microencapsulated essential oils and enzymes can reduce the detergency of laundry compositions.

[0114] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A concentrated environmentally friendly laundry composition, characterized in that: The invention is prepared from the following components in parts by weight: 15-35 parts of a narrow distribution fatty alcohol polyoxyethylene ether AEO7 / AEO9 mixture, 5-15 parts of isomeric alcohol ethers, 5-15 parts of fatty alcohol polyoxyethylene ether sodium sulfate, 0.5-1.5 parts of microcrystalline cellulose, 0.5-1.5 parts of microencapsulated plant essential oil, 2-5 parts of sodium citrate, 0.5-3 parts of tetrasodium glutamate diacetate, 0.5-1.5 parts of sodium polyaspartate, 0.05-0.15 parts of microencapsulated biological enzyme and 0.05-0.3 parts of preservative; The weight ratio of AEO7 to AEO9 in the narrow distribution fatty alcohol polyoxyethylene ether AEO7 / AEO9 mixture is 1-3:1; The coefficient of variation of the EO distribution coefficient in the narrow distribution fatty alcohol polyoxyethylene ether AEO7 / AEO9 mixture is ≤15%; The preparation method of the microcapsule plant essential oil comprises: mixing the plant essential oil with polyethylene glycol, stirring and shearing, adding carboxymethyl chitosan for cross-linking, and centrifuging to obtain the microcapsule plant essential oil; The preparation method of the microcapsule bioenzyme comprises: mixing and emulsifying a bioenzyme solution with a sodium alginate solution, dripping into a calcium chloride solution for cross-linking to obtain microspheres, mixing with a carboxymethyl chitosan solution, coating, and drying to obtain the microcapsule bioenzyme; The isomeric alcohol ether is one or more of C10 isomeric alcohol ether 7EO, C10 isomeric alcohol ether 9EO, and isomeric tridecyl alcohol polyoxyethylene (5) ether.

2. The laundry composition according to claim 1, characterized in that The microcapsule plant essential oil is one or more of lavender essential oil, chamomile essential oil and orange blossom essential oil.

3. The laundry composition according to claim 1, characterized in that The biological enzyme is one or more of protease, lipase and mannanase.

4. The laundry composition according to claim 1, wherein The preservative is 1,2-hexanediol or anisic acid.

5. A method for preparing the laundry composition according to any one of claims 1 to 4, characterized in that: include: Sodium citrate, tetrasodium glutamate diacetate, sodium polyaspartate and water are mixed and heated to obtain a chelating system; a narrow distribution fatty alcohol polyoxyethylene ether AEO7 / AEO9 mixture, isomeric alcohol ethers and fatty alcohol polyoxyethylene ether sodium sulfate are heated and mixed, and then added to the chelating system, stirred and sheared, and microencapsulated plant essential oil, microencapsulated biological enzyme, microcrystalline cellulose and a preservative are added, and the mixture is homogenized to obtain the laundry composition.

6. The preparation method according to claim 5, characterized in that The stirring and shearing is performed at a rotation speed of 1500-2500 rpm and for a time of 6-10 minutes.