Laundry composition and preparation method therefor

Abstract

A laundry composition and a preparation method therefor, relating to the technical field of everyday chemical products. The laundry composition comprises: an encapsulation material, a functional component encapsulated within the encapsulation material, and a binder used for bonding the encapsulation material; the encapsulation material is a film-forming material having a washing function, and the functional component comprises one or more of softening particles, scent particles, active oxygen particles, and an enzyme preparation. By using the encapsulation material having a washing function to encapsulate the functional component, integration of cleaning and stain removal, softening, and scenting is achieved; furthermore, because the softening particles, the scent particles, the active oxygen particles, and the enzyme preparation in the functional component are not directly added to the encapsulation material, the functional component does not lose effectiveness even if the encapsulation material is subjected to high-temperature press-forming, thus overcoming the defect of poor effects or high costs caused by functional components being added directly to existing laundry detergent sheets.

Description

A laundry composition and preparation method thereof Technical Field

[0001] The present invention relates to the technical field of daily chemicals, in particular to a laundry composition and a preparation method thereof. Background Art

[0002] Existing laundry products come in a variety of forms, including powdered laundry detergent, laundry soap powder, soap blocks or flakes, laundry tablets, liquid laundry liquids, and beaded laundry beads. Among these, laundry beads and laundry tablets are more convenient to carry, but laundry beads are typically wrapped in PVA film, which has a high plastic content and is environmentally unfriendly. Laundry tablets, another high-tech laundry product, are high in active ingredients and dried at high temperatures to form tablets. They quickly disintegrate upon contact with water, making them easy to carry, accurate in metering, and low in transportation costs, making them another popular choice on the market. However, laundry tablets are typically dried at high temperatures to form tablets. For example, the soft, decontamination-removing laundry composition and preparation method disclosed in Chinese invention patent application No. CN117363432A, as well as the laundry tablets disclosed in the laundry tablet preparation process, use temperatures as high as 90-105°C. This results in poor enzyme stability and prone to partial inactivation, narrowing the enzyme selection range and requiring increased enzyme dosage. Furthermore, the high-temperature manufacturing process for laundry tablets precludes the use of fragrance microcapsules, which offer excellent fragrance retention. Conventional fragrances, however, are required for enhanced fragrance. Conventional fragrances readily consume surfactants, reducing their detergency. Furthermore, since laundry tablets primarily contain anionic or nonionic surfactants, while fabric softeners primarily contain cationic surfactants, adding the softener directly to the tablets consumes some of the anionic surfactant, resulting in reduced detergency and fabric softening.

[0003] It can be seen that the existing technology still needs to be improved and enhanced.

[0004] Summary of the Invention

[0005] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a laundry composition and a preparation method thereof, aiming to solve the defect of the single function of the laundry tablets in the prior art.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A laundry composition, comprising: a packaging material, a functional component coated in the packaging material, and a binder for bonding the packaging material; the packaging material is a film-forming material with a washing function; the functional components include one or more of softening particles, fragrance-retaining particles, active oxygen particles, and enzyme preparations.

[0008] In the laundry composition, the weight ratio of the packaging material to the functional component is 1:(1-3).

[0009] In the laundry composition, the functional components are composed of softening particles, fragrance-retaining particles, active oxygen particles and enzyme preparations, and the weight ratio of the softening particles, fragrance-retaining particles, active oxygen particles and enzyme preparations is 1:(2-4):(0.1-2):(0.01-0.5).

[0010] In the laundry composition, the raw materials for preparing the packaging material include, by mass percentage, 1-5% of a first film-forming agent, 10-20% of a second film-forming agent, 10-30% of a surfactant, 1-10% of an extender, 0-5% of an antibacterial agent, 0-1% of a pigment, and the balance is water.

[0011] In the laundry composition, the first film-forming agent is selected from one or more of polyvinyl alcohol, polyvinyl ether or polyvinyl pyridine compounds.

[0012] In the laundry composition, the second film-forming agent is selected from one or more of cationic modified starch, modified cellulose, modified hemicellulose, and modified lignin.

[0013] In the laundry composition, the surfactant is selected from one or more of lauryl sulfate, lauryl sulfonate, α-olefin sulfonate, betaine type amphoteric surfactant, amino acid surfactant, and fatty alcohol polyoxyethylene ether compound.

[0014] In the laundry composition, the extender is selected from one or more of glycerol or its polymer, alkyl glycoside or low molecular weight block polysiloxane.

[0015] In the laundry composition, the antibacterial agent is selected from one or more combinations of tropolone, curcumin, diclosan or parachlorometaxylenol.

[0016] A method for preparing a laundry composition, for preparing the laundry composition described above, comprising: preparing a packaging material, preparing a binder, and encapsulating a functional component; encapsulating the functional component comprises: placing the functional component on one of the packaging materials, applying the binder around the edges of the sheet-like packaging material, then covering it with another sheet of packaging material, and squeezing the edges of the packaging material to seal the two sheets of packaging material to obtain the laundry composition. Beneficial effects:

[0017] The present invention provides a laundry composition and a preparation method thereof. The laundry composition can achieve the functions of cleaning, decontamination, softening and fragrance retention by encapsulating functional components in a packaging material with a washing function. Moreover, since the softening particles, fragrance-retaining particles, active oxygen particles and enzyme preparations among the functional components are not directly added to the packaging material, even if the packaging material is formed by high-temperature drying, the functional components will not become ineffective. Therefore, the defects of directly adding functional components to existing laundry tablets, such as poor effect or excessive cost, can be solved. At the same time, the coating effect of the packaging material can isolate the functional components from the outside world, especially the active oxygen particles and enzyme preparations, so that they can avoid contact with air, thereby better retaining the efficacy of the functional components. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] FIG1 is a physical diagram of the laundry composition provided in Example 1 of the present invention.

[0019] FIG2 is a physical picture of the laundry composition provided in Example 7 of the present invention. DETAILED DESCRIPTION

[0020] The present invention provides a laundry composition and a method for preparing the same. To make the objectives, technical solutions, and effects of the present invention more clear and explicit, the present invention is further described in detail with reference to the following examples. It should be understood that the specific examples described herein are intended only to illustrate the present invention and are not intended to limit the present invention.

[0021] In the prior art, in order to increase the additional functions of laundry tablets, auxiliary ingredients are usually added to their raw materials. For example, to make laundry tablets have a fragrance-retaining or softening effect, fragrances (or fragrance microcapsules) or softener ingredients are often added, or to enhance the cleaning effect of laundry tablets, active oxygen particles or enzyme preparations are added. However, during the preparation of laundry tablets, the ingredients are usually stirred and mixed, melted into a slurry, and then dried and formed. During the preparation process, the slurry temperature reaches 100°C or above. However, under such high temperature conditions and the need for stirring, the active oxygen particles and enzyme preparations are prone to failure. The fragrance microcapsules will explode, causing the fragrance to be released prematurely, making it impossible to play the corresponding role when finally used. As a result, existing laundry tablets either do not have functions other than washing, or they obtain the corresponding functions by increasing the amount of auxiliary ingredients added, which in turn leads to increased costs. In addition, even if the added fragrance-retaining ingredient is not a fragrance microcapsule, such as adding a free fragrance, the free fragrance will consume the surfactant, which will reduce the cleaning function of the laundry tablet.

[0022] In this regard, the first aspect of the present invention provides a laundry composition, which can be in the form of sheets, blocks or bags, and the specific product form can be set according to actual needs. The laundry composition includes: a packaging material, a functional component coated in the packaging material, and a binder for bonding the packaging material, wherein the packaging material and the functional component can be combined in any ratio according to actual functional needs, but based on the requirements of coating, when the weight ratio of the packaging material to the functional component is 1: (1-3), the packaging material can better seal and coat the functional component, and can have better decontamination function and other auxiliary functions; the packaging material is a film-forming material with a washing function, such as a film-forming sheet-shaped laundry film or laundry sheet, which has a cleaning and decontamination effect when dissolved in water, has a good molding effect when solidified, and does not stick to each other. At the same time, the The packaging material also needs to have a certain degree of flexibility or ductility, that is, it has good tensile strength, so that one or two pieces of packaging material can be bonded together to form a space for accommodating functional components, so as to obtain a sheet-shaped, block-shaped or bagged laundry composition that integrates the functions of washing, softening, fragrance retention, sterilization, and anti-color transfer; the functional components include one or more of softening particles, fragrance retention particles, active oxygen particles and enzyme preparations, preferably multiple types. By coating these functional components in the packaging material, the laundry composition can have a softening, fragrance retention or better washing effect; the adhesive is used to seal the opening or edge of the packaging material to seal the functional components in the packaging material.

[0023] The laundry composition adopts a method of encapsulating functional components in a packaging material with a washing function, thereby achieving the integration of cleaning, decontamination, softening and fragrance retention. Moreover, since the granular softening particles, fragrance retention particles, active oxygen particles and enzyme preparation are not directly added to the packaging material, even if the packaging material is dried and formed at high temperature, it will not cause the functional components to become ineffective. Therefore, it can solve the defects of the existing laundry tablets directly adding functional components, such as poor effect or high cost. At the same time, through the coating effect of the packaging material, the functional components can be isolated from the outside world, especially the active oxygen particles and enzyme preparation, which can avoid contact with air and better retain the efficacy of each functional component. Furthermore, the laundry composition can form a washing material with a specific amount by controlling the amount of the packaging material and the functional components. It is not only easy to carry but also convenient to use. When in use, only one or more pieces need to be added according to the amount of clothes to achieve the functions of washing, softening, fragrance retention and sterilization.

[0024] Because the packaging material not only encapsulates the functional components but also performs a cleaning function, it must possess excellent molding properties and flexibility or ductility, while also maintaining the required amount of surfactant. However, existing laundry tablets typically use polyvinyl alcohol as a carrier. While this material exhibits excellent ductility, it is difficult to degrade and is ineffective for cleaning. Therefore, reducing the amount of polyvinyl alcohol-based film-forming materials used while simultaneously improving the packaging material's molding and cleaning properties is a pressing issue. In a preferred embodiment, the raw materials used to prepare the packaging material include, by weight percentage: 1-5% of a first film-forming agent, 10-20% of a second film-forming agent, 10-30% of a surfactant, 1-10% of an extender, 0-5% of an antibacterial agent, 0-1% of a pigment, and the balance being water. The first film-forming aid is selected from one or more of polyvinyl alcohol, polyvinyl ether, or polyvinyl pyridine compounds, but is not limited to these components. It can also be other organic substances with film-forming properties. These film-forming materials exhibit excellent film-forming properties even with a relatively low addition amount. The second film-forming agent is selected from one or more of cationic modified starch, modified cellulose, modified hemicellulose, and modified lignin, but is not limited to the aforementioned ingredients. It can also be other substances with film-forming effects and easily degraded in the environment. Such substances have film-forming effects and can be decomposed by microorganisms after being dissolved in water, so they are more environmentally friendly. In addition, such film-forming agents also have gelling or flocculating effects after being dispersed in water. They can adsorb anionic pigments and thus play a role in preventing color transfer. The extender is selected from one or more of glycerol or its polymers, alkyl glycosides, or low-molecular-weight block polysiloxanes, but is not limited to the aforementioned ingredients. It can also be other compounds with the same function. Such extenders can act on the first film-forming agent and the second film-forming agent to improve the ductility of the packaging material, avoid cracking of the packaging material, and thus make the packaging material have a better encapsulation effect on the functional components. The surfactant is selected from one or more of lauryl sulfate, lauryl sulfonate, α-olefin sulfonate, betaine-type amphoteric surfactant, amino acid surfactant, and fatty alcohol polyoxyethylene ether compounds, but is not limited to the aforementioned surfactants and may also be other ingredients with similar functions. Such surfactants have a good washing effect, can effectively remove stains from clothing, and effectively clean clothing. The antibacterial agent is selected from one or more of tropolone, curcumin, diclosan (HP-100), or parachlorometaxylenol (PCMX), thereby providing the laundry composition with a good antibacterial effect.

[0025] The aforementioned packaging material uses easily degradable cationic modified starch, modified cellulose, modified hemicellulose, and modified lignin to replace the difficult-to-degrade polyvinyl alcohol, and combines the effect of the extender. This not only greatly reduces the amount of the difficult-to-degrade first film-forming agent, thereby achieving the purpose of plastic reduction, but also enables the packaging material to have better molding effect and flexibility, thereby having a better encapsulation effect on the functional components; at the same time, by utilizing the colloid or flocculant effect of film-forming agents such as cationic modified starch, modified cellulose, modified hemicellulose, and modified lignin in water, they can adsorb anionic pigments, thereby playing a role in preventing color transfer.

[0026] In a preferred embodiment, the functional components are composed of softening particles, fragrance-retaining particles, active oxygen particles and enzyme preparations, so that the laundry composition can have multiple functions. While enhancing the decontamination effect, it can make clothes softer and have a fragrance-retaining effect.

[0027] In a more preferred embodiment, the weight ratio of the packaging material to the functional component is 1:2, and the weight ratio of the softening particles, fragrance-retaining particles, active oxygen particles and enzyme preparation is 1:(2-4):(0.1-2):(0.01-0.5). The laundry composition with this ingredient ratio has a better decontamination effect, and the clothes are soft and have a long-lasting fragrance.

[0028] In a preferred embodiment, the active oxygen particles in the functional component are granular materials formed by coating a water-soluble inert film with a percarbonate or persulfate base material. These active oxygen particles release oxygen in water, degrading organic stains and enhancing the cleaning performance of the laundry composition.

[0029] In a preferred embodiment, the enzyme preparation in the functional component includes one or more of protease, cellulase, amylase, lipase, and pectinase. This type of enzyme preparation can synergistically improve the cleaning effect of surfactants on clothes, and can have a better cleaning effect while reducing the amount of laundry composition used.

[0030] As a preferred embodiment, the enzyme preparation is a combination of protease, cellulase, amylase, lipase and pectinase provided by Novozymes, and the weight ratio of the protease, cellulase, amylase, lipase and pectinase is 5:5:3:1:1. The granular enzyme preparation configured in this ratio has a better cleaning effect.

[0031] In a preferred embodiment, the fragrance particles in the functional component are fragrance microcapsules, which are easily attached to the surface of clothing and release fragrance after being ruptured by friction or exposed to oxygen, thus having a long-lasting fragrance effect. Preferably, the fragrance particles are provided by Firmenich. type, Type or The lingering fragrance particles of this type of fragrance can release different types of fragrance when exposed to oxygen, with the effect of diverse fragrance levels and long-lasting fragrance release time.

[0032] In a preferred embodiment, the softener particles in the functional component are highly concentrated softening beads. Preferably, the softener is the WS series softening beads product provided by Foshan Magic Crystal Technology Development Co., Ltd., which has a better softening effect on clothes.

[0033] In a preferred embodiment, the binder includes a bacteriostatic agent, modified cationic starch, or modified cellulose. The bacteriostatic agent is diclosan (HP-100) or parachloro-metaxylenol (PCMX), which has antibacterial and mildew-proof properties. The modified cationic starch or modified cellulose not only has a binding effect but also prevents color transfer.

[0034] The second aspect of the present invention further provides a method for preparing a laundry composition, which comprises: preparing a packaging material, preparing a binder, and encapsulating functional components.

[0035] The preparation of the packaging material comprises the following steps:

[0036] S1. Stir and mix part of the water (30-50% of the total water) and the first film-forming agent at room temperature; S2. Add a surfactant, raise the temperature to 55-80°C, and stir evenly; S3. Stop heating, and add the second film-forming agent and pigment, and stir at high speed until the material becomes a dense cream; S4. Add the remaining water (50-70% of the total water), and cool the system to 40-60°C, then add an extender and an antibacterial agent, and stir evenly; S5. Make the material into a film or sheet with a thickness of 0.05-0.3 cm at 105-115°C, roll it up, and cut it to obtain a sheet-like packaging material.

[0037] The preparation of the binder comprises the following steps:

[0038] The cationic modified starch or modified cellulose is mixed evenly with water, and heated to 60-85° C. for gelatinization. After gelatinization, the mixture is cooled to 35-40° C., an antibacterial agent is added, and the mixture is mixed evenly to obtain a binder.

[0039] The encapsulation of the functional component comprises the following steps:

[0040] The functional components are placed on one of the packaging materials, and adhesive is applied around the edges of the sheet packaging material. Then another packaging material is covered on it, and the edges of the packaging materials are squeezed to seal the two packaging materials to obtain a laundry composition.

[0041] Of course, the functional components may be encapsulated by other methods, such as placing the functional material on a piece of packaging material and then bonding the edges of the packaging material with an adhesive, which can also encapsulate the functional material in the packaging material.

[0042] To further illustrate the laundry composition and preparation method thereof provided by the present invention, the following examples are provided.

[0043] Example 1

[0044] A laundry composition in the form of a bag, the physical form of which is shown in FIG1 , is composed of a packaging material, a functional component, and a binder. The mass ratio of the packaging material to the functional component is 1:2. The functional component is coated in the packaging material, and the binder is used to bond and seal the packaging material.

[0045] Among them, the raw materials for preparing the packaging material include, by mass percentage: 3% polyvinyl alcohol, 15% cationic modified starch, 10% dodecyl sulfate, 15% dodecyl sulfonate, 5% glycerol, 2% tropolone, 1% pigment, and 49% water.

[0046] The functional components include granular softener, fragrance-retaining particles, active oxygen particles and enzyme preparation, and the weight ratio of the softener, fragrance-retaining particles, active oxygen particles and enzyme preparation is 1:3:1:0.3.

[0047] The binder consists of modified cationic starch and an antibacterial agent in a weight ratio of 10:1.

[0048] The laundry composition is prepared by the following method:

[0049] Preparation of packaging materials:

[0050] S1. Stir and mix part of the water and polyvinyl alcohol at room temperature; S2. Add lauryl sulfate and lauryl sulfonate, raise the temperature to 75°C, and stir evenly; S3. Stop heating, and add cationic modified starch and pigment, and stir at high speed until the material becomes a dense cream; S4. Add the remaining water, and cool the system to 55°C, then add glycerol and tropone, and stir evenly; S5. Press the material into a film or sheet with a thickness of 0.2 cm at 110°C, roll it up, and cut it to obtain a sheet-like packaging material.

[0051] Preparation of adhesive:

[0052] The cationic modified starch or modified cellulose is mixed evenly with water, and heated to 75°C for gelatinization. After gelatinization, the mixture is cooled to 38°C, and an antibacterial agent is added and mixed evenly to obtain a binder.

[0053] Encapsulation of functional components:

[0054] The functional components are placed on one of the packaging materials, and adhesive is applied around the edges of the sheet packaging material. Then another packaging material is covered on it, and the edges of the packaging materials are squeezed to seal the two packaging materials to obtain a laundry composition.

[0055] Example 2

[0056] A laundry composition comprises a packaging material, a functional component and a binder, wherein the mass ratio of the packaging material to the functional component is 1:1, the functional component is coated in the packaging material, and the binder is used for bonding and sealing the packaging material.

[0057] The raw materials for preparing the packaging material include, by mass percentage, 1% polyethylene ether, 20% modified cellulose, 15% α-olefin sulfonate, 15% betaine type amphoteric surfactant, 10% alkyl glycoside, and 39% water.

[0058] The functional components include granular softener, fragrance-retaining particles, active oxygen particles and enzyme preparation, and the weight ratio of the softener, fragrance-retaining particles, active oxygen particles and enzyme preparation is 1:2:0.1:0.01.

[0059] The binder consists of modified cellulose and an antibacterial agent in a weight ratio of 10:1.

[0060] Example 3

[0061] A laundry composition consists of a packaging material, a functional component and a binder, wherein the mass ratio of the packaging material to the functional component is 1:3, the functional component is coated in the packaging material, and the binder is used for bonding and sealing the packaging material.

[0062] Among them, the raw materials for preparing the packaging material include, by mass percentage: 5% polyvinyl pyridine, 10% modified hemicellulose, 10% betaine type amphoteric surfactant, 1% low molecular block polysiloxane, 5% HP-100, 1% pigment, and 68% water.

[0063] The functional components include granular softener, fragrance-retaining particles, active oxygen particles and enzyme preparation, and the weight ratio of the softener, fragrance-retaining particles, active oxygen particles and enzyme preparation is 1:4:2:0.5.

[0064] The binder consists of modified cationic starch and an antibacterial agent in a weight ratio of 10:1.

[0065] Example 4

[0066] A laundry composition comprises a packaging material, a functional component and a binder, wherein the mass ratio of the packaging material to the functional component is 1:2, the functional component is coated in the packaging material, and the binder is used for bonding and sealing the packaging material.

[0067] Among them, the raw materials for preparing the packaging material include, by mass percentage: 2% polyvinyl alcohol, 18% modified lignin, 28% amino acid surfactant, 7% glycerol polymer, 2% PCMX, 1% pigment, and 42% water.

[0068] The functional components include granular softener, fragrance-retaining particles, active oxygen particles and enzyme preparation, and the weight ratio of the softener, fragrance-retaining particles, active oxygen particles and enzyme preparation is 1:3:0.5:0.05.

[0069] The binder consists of modified cationic starch and an antibacterial agent in a weight ratio of 10:1.

[0070] Example 5

[0071] A laundry composition comprises a packaging material, a functional component and a binder, wherein the mass ratio of the packaging material to the functional component is 1:2.5, the functional component is coated in the packaging material, and the binder is used for bonding and sealing the packaging material.

[0072] Among them, the raw materials for preparing the packaging material include, by mass percentage: 4% polyvinyl alcohol, 13% cationic modified starch, 22% fatty alcohol polyoxyethylene ether, 4% glycerol, 1% tropone, 2% HP-100, 1% pigment, and 53% water.

[0073] The functional components include granular softener, fragrance-retaining particles, active oxygen particles and enzyme preparation, and the weight ratio of the softener, fragrance-retaining particles, active oxygen particles and enzyme preparation is 1:2.5:1.5:0.1.

[0074] The binder consists of modified cationic starch and an antibacterial agent in a weight ratio of 10:1.

[0075] Example 6

[0076] A laundry composition is substantially the same as that of Example 1, except that the mass ratio of the packaging material to the functional component is 1:1; and the functional component is fragrance-retaining particles.

[0077] The preparation methods of the laundry compositions of Examples 2-6 are substantially the same as that of Example 1.

[0078] Example 7

[0079] A laundry composition in block form, the physical form of which is shown in FIG2 , is substantially the same as that in Example 1, except that the mass ratio of the packaging material to the functional component is 1:1; and the functional component is softening particles.

[0080] Example 8

[0081] A laundry composition in block form is basically the same as that in Example 1, except that the mass ratio of the packaging material to the functional component is 1:1.5; the functional component is a combination of softening particles and active oxygen particles, and the weight ratio of the softening particles to the active oxygen particles is 2:1.

[0082] Example 9

[0083] A laundry composition in block form is substantially the same as that of Example 1, except that the mass ratio of the packaging material to the functional component is 1:2; the functional component is a combination of softening particles, active oxygen particles, and an enzyme preparation, and the weight ratio of the softening particles, active oxygen particles, and the enzyme preparation is 1:1:0.3.

[0084] The preparation methods of the laundry compositions of Examples 7-9 are substantially the same as those of Example 1, except that, in the step of encapsulating the functional components, the middle of the packaging material is squeezed simultaneously with the edges thereof to form the laundry compositions into blocks.

[0085] Comparative Example 1

[0086] A laundry tablet. The raw materials for preparing the laundry tablet are composed of the following components, calculated by weight: 3 parts of polyvinyl alcohol, 15 parts of cationic modified starch, 10 parts of lauryl sulfate, 15 parts of lauryl sulfonate, 5 parts of glycerol, 2 parts of tropolone, 50 parts of water, 37.73 parts of softener, 113.2 parts of fragrance-retaining particles, 37.73 parts of active oxygen particles, and 16.98 parts of enzyme preparation.

[0087] The laundry tablet is prepared by the following steps:

[0088] Stir and mix half of the water and polyvinyl alcohol at room temperature; add a surfactant, raise the temperature to 65°C, and stir evenly; stop heating, add cationic modified starch and pigment, and stir at high speed until the material becomes a dense cream; A4, add the remaining water, cool the system to 50°C, then add an extender, antibacterial agent, softener, fragrance particles, active oxygen particles, and enzyme preparation, and stir evenly; press the material into a film or sheet with a thickness of 0.2 cm at 110°C, and cut it into a laundry sheet.

[0089] Comparative Example 2

[0090] A laundry composition is substantially the same as that of Example 1, except that the cationic modified starch is entirely replaced by polyvinyl alcohol.

[0091] Comparative Example 3

[0092] A laundry composition is substantially the same as that of Example 1, except that all the polyvinyl alcohol is replaced by cationic modified starch.

[0093] Performance Testing

[0094] Performance tests were conducted on Examples 1-5 and Comparative Examples 1-3. The performance tests included tests for detergency, softening effect, fragrance retention, and color transfer prevention. The detergency test method was based on GB / T 13174-2021 Determination of detergency and cyclic washing performance of detergents for clothing, and the relative detergency ratio was used for evaluation. The softening effect test was based on GB / T 18318.1-2009 and was expressed as the reduction in straight bending length ΔL. Where: ΔL: the change in bending length of the fabric before and after treatment, accurate to one decimal place; L 处理前 : Bending length of fabric before treatment, in cm; L 处理后 : Bending length of treated fabric, in cm. Note: A smaller straight bending length indicates a better softening effect of the laundry composition. The pretreatment method is as follows: Dissolve the laundry composition thoroughly in deionized water at a bath ratio of 1:50. Add the test fabric sample and stir for 20 minutes (stirring every 5 minutes for 30 seconds each time). Remove and dehydrate, then dry at 80°C for later use. The fragrance retention effect is measured by the static fragrance intensity ΔT after washing. ΔT is measured by a professional evaluation panel of towels and clothing after washing, drying, and storage for 4, 8, or 12 weeks. Fragrance intensity is rated from weak to strong on a scale of 1-7: 1 - no odor; 2 - faint; 3 - weak; 4 - medium; 5 - relatively strong; 6 - strong; 7 - very strong. The pretreatment method is as follows: prepare 20g of the laundry composition to be tested, three towels to be washed, and three pieces of laundry to be washed, and add them to a vertical drum washing machine; set the washing mode to standard, the washing time to 50 minutes, and start the washing process; dry the towels and laundry in a clothes drying room, store them in a wardrobe, and then evaluate the fragrance according to different lengths of time. The anti-color transfer effect is tested according to the test conditions A(1) in GB / T 3921-2008 and evaluated using the gray sample card for color staining in GB 251 (ISO 105-A03). Test conditions: rotation speed (40±2) Rad / min, water temperature (40±2)°C, washing time 30 min, bath ratio 50:1, laundry composition dosage 10 g / L, clothing type and weight ratio: blue cotton brand new jeans: black cotton brand new jeans: white multi-fiber cloth = 1:1:1, total weight approximately 1.2 kg. After washing, the white multi-fiber cloth was removed and rinsed twice with grade 3 clean water, then rinsed in running water until clean, dehydrated, and dried in air at no more than 60°C; the staining degree of the multi-fiber cloth was evaluated (a higher degree indicates less staining). The specific test results are shown in Table 1.

[0095] Table 1 Decontamination ratio

[0096] As shown in Table 1, the detergency of the laundry compositions in Examples 1-9 is related to the amount of surfactant, active oxygen particles, and enzyme preparation added, with the cleaning effect improving as the amount of these ingredients increases. However, Comparative Example 1 shows that while the composition ratio is the same as in Example 1, the preparation method involves stirring and melting the ingredients before pressing and molding, resulting in a significant decrease in detergency. This suggests that preparing the packaging material and functional material separately before coating can achieve even better cleaning results.

[0097] Table 2 Bending length reduction value

[0098] Table 2 shows that the reduction in bending length of the laundry compositions of Examples 1-9 is related to the amount of softener added, increasing with increasing softener addition. Comparative Example 1, however, shows that using a traditional preparation method, even with the same softener ratio, the softening effect varies significantly. This demonstrates that coating with a packaging material can prevent softener degradation during the preparation process.

[0099] Table 3 Static fragrance retention strength

[0100] As shown in Table 3, the fragrance retention effect of Examples 1-9 is related to the amount of fragrance particles added, improving with increasing amounts of fragrance particles. However, Comparative Example 1 shows that even with the same amount of fragrance particles as in Example 1, the fragrance retention effect is poor. This may be due to the fact that the fragrance particles break when prepared using traditional methods, resulting in premature fragrance release.

[0101] Table 4 Staining grades

[0102] Table 4 shows that the staining ratings of Examples 1-9 are related to the amount of softener added: the higher the softener added, the higher the staining rating and the stronger the anti-color transfer capability. However, with the same softener addition, the anti-staining rating of Comparative Example 1 is slightly lower than that of Example 1, possibly due to softener loss during the preparation process. The anti-color transfer capability of Comparative Example 3 is better than that of Example 1, possibly due to the ability of the cationic modified starch to adsorb some pigments.

[0103] In addition, the packaging materials prepared in Examples 1-5 and Comparative Examples 2 and 3 were subjected to tensile testing. The tensile testing method was conducted in accordance with GB / T 3923.1-1997, and the breaking strength data was compared (the packaging material was cut into strips 5 cm wide and 11 cm long and clamped with two clamps of a tensile machine. The packaging material was pulled at a constant speed until it broke, and the maximum tensile force of the packaging material when it was broken was recorded in Newtons). The specific test results are shown in Table 5.

[0104] Table 5 Breaking strength of packaging materials

[0105] As shown in Table 5, the breaking strength of the packaging material is related to the amount and type of the first film-forming agent added. The packaging materials prepared in Examples 1-5 all had a breaking strength of 10.91N or above, ensuring that the functional material would not break when encapsulated. Comparative Example 3 shows that when the first film-forming agent was not added to the packaging material, its breaking strength was 9.819N. However, experiments have shown that when the breaking strength of the packaging material is less than 10N, it is prone to breaking during the coating process, so a first film-forming agent with better breaking strength should be added to the packaging material. However, since polyvinyl alcohol is difficult to degrade, the amount of the first film-forming agent added should be minimized while ensuring that the packaging material meets the breaking strength requirements.

[0106] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of the present invention, and all these changes or substitutions should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A laundry composition, characterized in that include: Packaging material, functional components coated in the packaging material, and a binder for bonding the packaging material; the packaging material is a film-forming material with a washing function; The functional components include one or more of softening particles, fragrance-retaining particles, active oxygen particles and enzyme preparations.

2. The laundry composition according to claim 1, characterized in that The weight ratio of the packaging material to the functional component is 1:(1-3).

3. The laundry composition according to claim 2, characterized in that The functional components are composed of softening particles, fragrance-retaining particles, active oxygen particles and enzyme preparations, and the weight ratio of the softening particles, fragrance-retaining particles, active oxygen particles and enzyme preparations is 1:(2-4):(0.1-2):(0.01-0.5).

4. The laundry composition according to claim 1, characterized in that Calculated by mass percentage, the raw materials for preparing the packaging material include: 1-5% of the first film-forming agent, 10-20% of the second film-forming agent, 10-30% of the surfactant, 1-10% of the extender, 0-5% of the antibacterial agent, 0-1% of the pigment, and the balance is water.

5. The laundry composition according to claim 4, characterized in that The first film-forming agent is selected from one or more of polyvinyl alcohol, polyvinyl ether or polyvinyl pyridine compounds.

6. The laundry composition according to claim 4, characterized in that The second film-forming agent is selected from one or more of cationic modified starch, modified cellulose, modified hemicellulose, and modified lignin.

7. The laundry composition according to claim 4, characterized in that The surfactant is selected from one or more of dodecyl sulfate, dodecyl sulfonate, α-olefin sulfonate, betaine type amphoteric surfactant, amino acid surfactant, and fatty alcohol polyoxyethylene ether compound.

8. The laundry composition according to claim 4, characterized in that The extender is selected from one or more of glycerol or its polymer, alkyl glycoside or low molecular block polysiloxane.

9. The laundry composition according to claim 4, characterized in that The antibacterial agent is selected from one or more combinations of tropolone, curcumin, diclosan or para-chloro-meta-xylenol.

10. A method for preparing a laundry composition, characterized in that: Used for preparing the laundry composition according to any one of claims 1 to 9, the method comprises: preparing a packaging material, preparing a binder and encapsulating a functional component; the encapsulation of the functional component comprises: placing the functional component on one of the packaging materials, applying an adhesive around the edge of the sheet packaging material, and then covering it with another packaging material, and sealing the two packaging materials by squeezing the edges of the packaging materials to obtain the laundry composition.

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