Solid washing medium and application thereof

Abstract

The invention relates to a solid washing medium and application thereof. The solid washing medium comprises water-absorbent resin and a cleaning component adsorbed in the water-absorbent resin. The solid washing medium provided by the invention has wetting capacity and adsorption capacity, has no dominant liquid water, can remove stains, and does not cause the influence of shrinkage and the like on fabrics such as wool.

Description

Technical Field

[0001] The present disclosure relates to the technical field of detergents, and in particular to a solid washing medium and application thereof. Background Art

[0002] Clothing washing technology includes water washing and dry cleaning. Among them, household washing is mostly water washing, that is, using water as the washing medium, using the flushing ability and wetting ability of water, combined with detergents such as laundry detergent, washing powder, and gel beads with surfactants as the main ingredients, by enhancing the wetting, emulsification and dispersion ability of stains, so as to achieve the effect of washing clothes; Correspondingly, dry cleaning is currently limited to the field of commercial washing, and is usually suitable for delicate clothes such as wool and silk that are prone to shrinkage, wrinkling and other damage during the washing process. Common commercial dry cleaning media include tetrachloroethylene, petroleum solvents, silicone-based solvents and alcohol ether solvents. These organic solvents do not contain water, which can ensure that the clothes will not shrink, fade and other destructive behaviors during the washing process, and can better maintain the appearance of the clothes during the washing process. The decontamination principle of dry cleaning mainly relies on the dissolving ability of the above-mentioned organic solvents to wash oil-soluble stains, and the ability to remove water-soluble stains is limited. At present, the local pre-treatment method for water-soluble stains on fabrics on the market requires manual operation and the operator has strong professional ability, which is overall cumbersome. Moreover, the problems of human health and environmental pollution caused by organic solvents are still unavoidable.

[0003] Whether it is water washing technology or dry cleaning technology, both use liquid as the washing medium. Water washing can solve most of the stain removal problems, but its disadvantage is that it will cause shrinkage, wrinkling and other damage to delicate clothes such as wool and silk, and cause serious fading after washing for some clothes. Dry cleaning has a good effect on the shape and color of clothes, but its disadvantages are also obvious. First, the ability to remove water-soluble stains is limited. Second, the large and complex dry cleaning machine system cannot be used at home. Third, the potential harm of organic solvents to human health and the environment is difficult to avoid. It is difficult for existing technical means to combine the advantages of water washing and dry cleaning while avoiding the defects of both in the washing process. Summary of the invention

[0004] In order to solve the above technical problems, the present disclosure provides a solid washing medium and application thereof.

[0005] In a first aspect, the present disclosure provides a solid washing medium, wherein components of the solid washing medium include a water-absorbing resin and a cleaning component absorbed in the water-absorbing resin.

[0006] As a preferred technical solution of the present disclosure, the water absorption capacity of the water-absorbing resin is more than 100 times of its own weight.

[0007] As a preferred technical solution of the present disclosure, the water-absorbing resin is selected from any one of organic synthetic resins, natural resins or organic / inorganic composite resins, or a combination of at least two of them.

[0008] As a preferred technical solution of the present disclosure, the organic synthetic resin is selected from any one of sodium polyacrylate water-absorbing resins, polypropylene alcohol water-absorbing resins or polyacrylamide water-absorbing resins, or a combination of at least two thereof.

[0009] As a preferred technical solution of the present disclosure, the material of the natural resin is selected from any one of gelatin, starch, cellulose or sodium alginate, or a combination of at least two of them.

[0010] As a preferred technical solution of the present disclosure, the cleaning component includes water, acid / alkaline water, or an aqueous solution of a detergent.

[0011] As a preferred technical solution of the present disclosure, the cleaning component includes an aqueous solution of a detergent, and the concentration of the detergent is 1000-6500 ppm.

[0012] As a preferred technical solution of the present disclosure, the mass ratio of the water-absorbing resin to the cleaning component is 1:(10-50), preferably 1:(20-50).

[0013] As a preferred technical solution of the present disclosure, the cleaning component also includes any one or a combination of at least two of bleach, disinfectant, antistatic agent or fragrance dissolved in water.

[0014] As a preferred technical solution of the present disclosure, the particle size of the solid washing medium is 0.5-3 mm.

[0015] As a preferred technical solution of the present disclosure, the components of the solid washing medium also include a friction agent, and preferably the friction agent is silicon dioxide and / or calcium carbonate.

[0016] In a second aspect, the present disclosure provides use of the solid washing medium described in the first aspect in laundry washing.

[0017] In a third aspect, the present disclosure provides a method for cleaning an object to be washed, the method comprising: stirring and mixing the solid washing medium described in the first aspect with the object to be washed, and then removing the solid washing medium to complete the cleaning of the object to be washed.

[0018] As a preferred technical solution of the present disclosure, the mass ratio of the solid washing medium to the object to be washed is (1-10):1.

[0019] Compared with the prior art, the technical solution provided by the embodiments of the present disclosure has the following advantages:

[0020] (1) The solid washing medium provided by the present disclosure has wetting and adsorption capabilities and does not contain explicit liquid water, which can remove stains without causing shrinkage or other effects on fabrics such as wool;

[0021] (2) The solid washing medium provided by the present disclosure has simple application conditions and will not cause any impact on the environment and human health. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0024] Figure 1 This is a comparison chart of the washing effects of the solid washing media described in Example 1 and Example 3 on stains of red wine and soy sauce. DETAILED DESCRIPTION

[0025] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0026] As for the current existing technology, both dry cleaning technology and water washing technology have their shortcomings. Although water washing technology can remove most stains, it may cause damage such as shrinkage to some materials. Although dry cleaning can avoid damage, it has too high requirements on the washing device, and the organic solvents used have certain impacts on human health and the environment. Therefore, the present disclosure provides a solid washing medium, which has low requirements on the washing device, has a good decontamination effect, and will not cause damage to materials such as wool, and has no impact on the environment and human health.

[0027] In a first aspect, the present disclosure provides a solid washing medium, wherein components of the solid washing medium include a water-absorbing resin and a cleaning component absorbed in the water-absorbing resin.

[0028] The solid washing medium provided by the present invention includes a water-absorbing resin, which has the ability to absorb and bind cleaning components, so that it has both wetting and adsorption capabilities and other washing capabilities, thereby enabling solid particles to be used as a washing medium. This is a new decontamination method and washing form.

[0029] In the present disclosure, the water-absorbing resin can absorb cleaning components on the one hand, so that it has a certain decontamination ability. On the other hand, the water-absorbing resin also has a certain adsorption capacity and friction force, which can play an auxiliary role in the washing process, further enhance the decontamination ability of the solid washing medium and slow down the redeposition problem of stains.

[0030] As a preferred technical solution of the present disclosure, the water absorption capacity of the water-absorbing resin is more than 100 times of its own weight.

[0031] In order to avoid introducing significant liquid water when applying solid washing media, the present invention prefers water-absorbing resins with relatively high water absorption rates. Water-absorbing resins with relatively high water absorption rates can not only meet application requirements, but also adjust the water absorption rates according to different materials of target washing substances to meet different cleaning requirements.

[0032] At present, any existing water-absorbing resin that can meet the application requirements can be introduced into the present disclosure for application, and the present disclosure does not impose too many restrictions on this. As a preferred technical solution of the present disclosure, the water-absorbing resin is selected from any one or a combination of at least two of organic synthetic resins, natural resins or organic / inorganic composite resins.

[0033] As a preferred technical solution of the present disclosure, the organic synthetic resin is selected from any one of sodium polyacrylate water-absorbing resins, polypropylene alcohol water-absorbing resins or polyacrylamide water-absorbing resins, or a combination of at least two thereof.

[0034] As a preferred technical solution of the present disclosure, the material of the natural resin is selected from any one of gelatin, starch, cellulose or sodium alginate, or a combination of at least two of them.

[0035] As a preferred technical solution of the present disclosure, the cleaning component includes water, acid / alkaline water, or an aqueous solution of a detergent.

[0036] In the present disclosure, in order to remove water-soluble stains, only water or acid / alkaline water can be used as a cleaning component to achieve stain removal. In order to enhance the stain removal ability, detergents containing surfactants can be introduced into the present disclosure, dissolved in water to form detergents as cleaning components, and adsorbed by water-absorbing resins, and the whole is used as a solid washing medium for washing clothes. The present disclosure can achieve targeted removal effects on different stains by introducing different cleaning components.

[0037] The detergent described in the present disclosure can be any detergent containing a surfactant. The present disclosure does not limit the specific ingredients of the detergent. Any detergent that can achieve a washing function can be used in the present disclosure, including but not limited to laundry liquid, laundry powder or laundry beads, or any substance with a cleaning function such as soap or soap.

[0038] As a preferred technical solution of the present disclosure, the cleaning component includes an aqueous solution of a detergent, and the concentration of the detergent is 1000-6500 ppm, for example, 1500 ppm, 2000 ppm, 2500 ppm, 3000 ppm, 3500 ppm, 4000 ppm, 4500 ppm, 5000 ppm, 6500 ppm, etc.

[0039] As a preferred technical solution of the present disclosure, the mass ratio of the water absorbing resin to the cleaning component is 1:(10-50), for example, 1:15, 1:20, 1:25, 1:30, 1:35, 1:40, 1:45, etc., preferably 1:(20-50).

[0040] Although the water-absorbing resin has a large water absorption capacity, in order to meet the washing requirements, the present disclosure preferably uses the water-absorbing resin to absorb 10-50 times the cleaning components. At this time, there is no explicit liquid water in the solid washing medium, and it can also provide the moisture wetting effect and particle friction and adsorption effect required for washing.

[0041] In order to ensure the removal rate of stains, the present invention preferably adsorbs 20-50 times the cleaning components. At this time, the wetting ability of the washing material is stronger and it also has a certain friction force, which can have a better removal effect on the stains.

[0042] When the solid washing medium is used, the wetting ability of the water-absorbing resin on the surface of the stains to be washed can be adjusted by adjusting the adsorption amount of the cleaning component by the water-absorbing resin, thereby ensuring a good washing effect.

[0043] During the washing process, the stains are peeled off from the fabric surface through the wetting of water (and the volume expansion and emulsification effects of the surfactants contained in the introduced detergent). The good adsorption effect of the resin particles can prevent the stains from being deposited on the fabric surface again, thereby not only removing the stains, but also avoiding secondary contamination of the stains.

[0044] Moreover, due to the solid washing medium used, the washing process all occurs between the particle surface and the fabric surface, which is an interaction between interfaces. Therefore, the solid washing medium provided by the present invention can also avoid the rinsing process, thus saving water resources to a great extent.

[0045] As a preferred technical solution of the present disclosure, the cleaning component also includes any one or a combination of at least two of bleach, disinfectant, antistatic agent or fragrance dissolved in water.

[0046] Bleaching agents, disinfectants, antistatic agents or fragrances can be introduced into the present invention, dissolved in water as part of the cleaning components, and introduced into the present invention for application, which can give the solid washing medium bleaching, disinfection, antistatic, aromatherapy and other effects.

[0047] As a preferred technical solution of the present disclosure, the particle size of the solid washing medium is 0.5-3 mm, for example, 0.8 mm, 1 mm, 1.2 mm, 1.5 mm, 1.8 mm, 2.0 mm, 2.2 mm, 2.5 mm, 2.8 mm, etc.

[0048] The water-absorbing resin absorbs the cleaning components and expands in volume, eventually obtaining particles with a particle size of 0.5-3 mm. By adjusting the water absorption of the water-absorbing resin, the washing effect of the solid washing medium can be adjusted. The greater the water absorption, the stronger the wetting ability for clothes and the weaker the friction; the smaller the water absorption, the weaker the wetting ability for clothes, but the stronger the friction.

[0049] As a preferred technical solution of the present disclosure, the solid washing medium also includes a friction agent, preferably silicon dioxide and / or calcium carbonate. The introduction of a friction agent powder component can increase the cleaning effect of the solid washing medium.

[0050] In a second aspect, the present disclosure provides use of the solid washing medium described in the first aspect in laundry washing.

[0051] The solid washing medium provided by the present disclosure does not have explicit liquid water, and thus can avoid affecting fabrics such as wool, while at the same time being able to efficiently utilize water to achieve the removal of (water-soluble) stains.

[0052] In a third aspect, the present disclosure provides a method for cleaning an object to be washed, the method comprising: stirring and mixing the solid washing medium described in the first aspect with the object to be washed, and then removing the solid washing medium to complete the cleaning of the object to be washed.

[0053] As a preferred technical solution of the present disclosure, the mass ratio of the solid washing medium to the object to be washed is (1-10):1, for example, 2:1, 3:1, 4:1, 5:1, 6:1, 7:1, 8:1, 9:1, etc.

[0054] The present invention can fully mix and rub the clothes and the objects to be washed by the rotation of the drum, and then can peel the solid particles from the fabric by the rotation of the drum, ventilation and other conditions.

[0055] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.

[0056] The following examples all use commercially available products, and the raw material information is shown in Table 1:

[0057] Table 1

[0058]

[0059] Example 1

[0060] This embodiment provides a method for preparing a solid washing medium.

[0061] The cross-linked polypropylene alcohol water-absorbing resin is mixed with an aqueous solution of a detergent having a concentration of 2000 ppm, and the water-absorbing resin absorbs the aqueous solution of the detergent to obtain a solid washing medium, wherein:

[0062] The mass ratio of the cross-linked polypropylene alcohol water-absorbing resin to the aqueous solution is 1:20.

[0063] Embodiment 2-4

[0064] This embodiment provides a method for preparing a solid washing medium.

[0065] The difference from Example 1 is that in this example, the mass ratio of the cross-linked polypropylene alcohol water-absorbing resin to the aqueous solution is 1:10 (Example 2), 1:15 (Example 3), and 1:50 (Example 4).

[0066] Example 5

[0067] This embodiment provides a method for preparing a solid washing medium.

[0068] The starch-based water-absorbing resin is mixed with pure water, and the water-absorbing resin absorbs the pure water to obtain a solid washing medium, wherein:

[0069] The mass ratio of starch-based water-absorbing resin to pure water is 1:30.

[0070] Example 6

[0071] This embodiment provides a method for preparing a solid washing medium.

[0072] The organic / inorganic composite resin is mixed with alkaline water (containing 6500ppm of calcium bicarbonate), and the water-absorbing resin absorbs the alkaline water to obtain a solid washing medium, wherein:

[0073] The mass ratio of the organic / inorganic composite resin to alkaline water is 1:40.

[0074] Example 7

[0075] This embodiment provides a method for preparing a solid washing medium.

[0076] The cross-linked polyacrylamide water-absorbing resin is mixed with an aqueous solution containing a detergent and a bleaching agent at a concentration of 1000 ppm, and the water-absorbing resin absorbs the aqueous solution to obtain a solid washing medium, wherein:

[0077] The mass ratio of the cross-linked polyacrylamide water-absorbing resin to the aqueous solution is 1:35, and the bleaching agent is hydrogen peroxide.

[0078] Example 8

[0079] This embodiment provides a method for preparing a solid washing medium.

[0080] The cross-linked polyacrylamide water-absorbing resin is mixed with an aqueous solution containing a detergent and a fragrance at a concentration of 6500 ppm, the water-absorbing resin absorbs the aqueous solution, and then mixed with silica microspheres to obtain a solid washing medium, wherein:

[0081] The mass ratio of the cross-linked polyacrylamide water-absorbing resin to the aqueous solution is 1:35, and the added amount of silicon dioxide is 50% of the mass of the polyacrylamide water-absorbing resin.

[0082] Comparative Example 1-2

[0083] This comparative example provides a method for preparing a solid washing medium.

[0084] The difference from Comparative Example 1 is that in this comparative example, the mass ratio of the cross-linked polypropylene alcohol water-absorbing resin to the aqueous solution is 1:1 (Comparative Example 1) and 1:70 (Comparative Example 2).

[0085] Comparative Example 3

[0086] This comparative example provides a liquid washing medium.

[0087] This comparative example provides an aqueous solution containing a detergent, wherein the concentration of the detergent is 2000 ppm.

[0088] Performance Testing

[0089] The washing media provided in the embodiments and comparative examples were tested for performance as follows:

[0090] (1) Particle size: The particle size range of the washing medium provided in the embodiments and comparative examples was tested and counted using ImageJ software. The results are shown in Table 2.

[0091] (2) Decontamination rate: Take ordinary cotton cloth available on the market and cut it into round pieces with a diameter of 15 cm. Take 20 μL of fresh stains (red wine, soy sauce) and drop them on different cotton cloths. After aging for 6 hours, use a whiteness tester to test the whiteness value before washing and record it as Y1. The whiteness value of the tested cotton cloth load is recorded as Y0. Put the loaded cotton cloth with stains into the washing equipment and add the washing medium (the amount of solid washing medium added is 1 g, the amount of liquid washing medium used is 30 mL, and the concentration is 2000 ppm). Start the washing program. After the washing program is completed, take out the loaded cotton cloth with stains and test its whiteness value after washing Y2. Calculate the decontamination rate, where:

[0092] Decontamination rate W = (Y2-Y1) / (Y0-Y1) × 100%;

[0093] Figure 1 This is a comparison chart of the washing effects of the solid washing medium described in Example 1 and Example 3 on stains of red wine and soy sauce. Figure 1 It can be seen that although the solid washing medium with a water absorption capacity of 15 times has a certain removal effect, the stain removal rate is low. The solid washing medium with a water absorption capacity of 20 times has a better removal effect on red wine and soy sauce stains.

[0094] (3) Wool shrinkage rate: Take a commercially available knitted wool cloth with a size of 10×10 cm, record the area as A1, put it into a washing machine, and add a washing medium (the amount of solid washing medium added is 1 g, the amount of liquid washing medium used is 30 mL, and the concentration is 2000 ppm). Start the washing program. After the washing is completed, take out the knitted wool cloth and measure its area, record it as A2, and calculate the shrinkage rate, where:

[0095] Shrinkage % = A2 / A1×100%;

[0096] The test results are shown in Table 2:

[0097] Table 2

[0098]

[0099] Note: The particle size distribution of Examples 1-7 refers to the particle size of the solid washing medium, and the particle size distribution in Example 8 refers to the particle size of the water-absorbing resin adsorbed with the aqueous solution before the abrasive is added.

[0100] It can be seen from the embodiments and performance tests that the solid washing medium provided by the present disclosure has excellent washing ability, which can not only remove (water-soluble) stains, but also achieve efficient use of water. Moreover, since there is no visible water, it will not cause shrinkage of materials such as wool, and is environmentally friendly.

[0101] It can be seen from the examples that the particle size distribution of the solid washing medium provided by the present disclosure is relatively uniform and the particle size is relatively small. The small particle size distribution can bring sufficient specific surface area, fully contact the clothes, and thus ensure a good washing effect. From the comparison of Examples 1-4 and Comparative Examples 1-2, it can be seen that the adsorption of the cleaning component by the water-absorbing resin within 10-50 times can achieve the removal of stains, and the removal rate of stains within 20-50 times is high. From the comparison of Example 1 and Examples 5-6, it can be seen that introducing an aqueous solution containing a detergent into the water-absorbing resin can achieve a better cleaning effect; from the comparison of the examples and Comparative Example 3, it can be seen that the solid washing medium provided by the present disclosure can achieve a stain removal effect similar to that of a water-washing medium, and save a lot of water resources, shorten the washing process, and will not cause shrinkage of products such as wool.

[0102] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0103] The above description is only a specific embodiment of the present disclosure, so that those skilled in the art can understand or implement the present disclosure. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to the embodiments described herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A solid washing medium, It is characterized in that The solid washing medium comprises water-absorbing resin and cleaning components absorbed in the water-absorbing resin.

2. The solid washing medium according to claim 1, It is characterized in that The water absorbing capacity of the water absorbing resin is more than 100 times its own weight; Preferably, the water-absorbing resin is selected from any one of organic synthetic resins, natural resins or organic / inorganic composite resins, or a combination of at least two thereof.

3. The solid washing medium according to claim 2, It is characterized in that The organic synthetic resin is selected from any one of sodium polyacrylate water-absorbing resins, polypropylene alcohol water-absorbing resins or polyacrylamide water-absorbing resins, or a combination of at least two thereof; And / or, the material of the natural resin is selected from any one of gelatin, starch, cellulose or sodium alginate, or a combination of at least two thereof.

4. The solid washing medium according to any one of claims 1 to 3, It is characterized in that The cleaning component includes water, acid / alkaline water, or an aqueous solution of a detergent; Preferably, the cleaning component comprises an aqueous solution of a detergent, and more preferably, the concentration of the detergent is 1000-6500 ppm.

5. The solid washing medium according to any one of claims 1 to 4, It is characterized in that The mass ratio of the water absorbing resin to the cleaning component is 1:(10-50), preferably 1:(20-50).

6. The solid washing medium according to any one of claims 1 to 5, It is characterized in that The cleaning components also include any one or a combination of at least two of bleach, disinfectant, antistatic agent or fragrance dissolved in water.

7. The solid washing medium according to any one of claims 1 to 6, It is characterized in that The particle size of the solid washing medium is 0.5-3 mm.

8. The solid washing medium according to any one of claims 1 to 7, It is characterized in that The solid washing medium also includes an abrasive, and preferably the abrasive is silicon dioxide and / or calcium carbonate.

9. Use of the solid washing medium according to any one of claims 1 to 8 in laundry washing.

10. A method for cleaning an object to be washed, It is characterized in that The cleaning method comprises: stirring and mixing the solid washing medium according to any one of claims 1 to 8 with the object to be washed, and then removing the solid washing medium to complete the cleaning of the object to be washed; Preferably, the mass ratio of the solid washing medium to the object to be washed is (1-10):1.

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