A kind of washing-free decontamination spray for clothing and preparation method thereof

Abstract

The present invention relates to a non-washing decontamination spray for clothing, which is prepared from the following components by weight: 1-3 parts of surfactant solution, 16-27 parts of organic solvent, 1-3 parts of dry powder, and 70-80 parts of compressed gas, wherein the surfactant solution is prepared by mixing the following components: 10-15 parts of ionic surfactant, 2-5 parts of non-ionic surfactant, and 80-88 parts of pure water. The decontamination spray of the present invention is environmentally friendly, does not need to be washed with water, can be applied to a small area, is convenient to carry, has high efficiency, has no secondary residue, removes dirt quickly, and is easy to handle.

Description

Technical Field

[0001] The invention relates to a detergent, in particular to a laundry free-wash detergent spray and a preparation method thereof. Background Art

[0002] With the rapid development of my country's economy and society and the accelerated pace of life, people's requirements for clothing are getting higher and higher. The cleanliness and beauty of clothes can reflect people's mental outlook and quality of life. The continuous increase in demand for clothing cleaning and care products has promoted the continuous development and innovation of cleaning methods.

[0003] Conventional fabric cleaning methods (water washing and dry cleaning) are complex and time-consuming, and cannot meet people's needs for instant cleaning and stain removal of clothing and eliminating the rinsing process in special occasions. In particular, when local stains appear on fabrics such as clothes, hats and shoes, cleaning the entire fabric is not only time-consuming and labor-intensive, but also often ineffective. Traditional dry cleaning detergents mostly use solvents such as chlorinated alkanes and olefins, which are toxic and inconvenient to carry and use anytime and anywhere.

[0004] In patent CN 201810677135, a dry-cleaning tear-off type powder-free residue detergent and its preparation method, the mass fraction of the solvent reaches 78 to 88 parts. In order to form a complete and tough film, the drying time is very long and the decontamination efficiency is low; similarly, in patent CN 201811068682, a preparation method of a dry-cleaning detergent containing microcapsules and its product discloses a preparation method of a microcapsule dry-cleaning detergent, but the preparation process of the microcapsules is complicated, the release rate of its effective ingredients is slow, the boiling point is high, and the natural evaporation and drying time is long, which cannot meet people's needs for convenient and rapid stain removal; the dry-cleaning and water-washing multifunctional detergent disclosed in patent CN 201810677147, a dry-cleaning and water-washing multifunctional detergent and its preparation method, contains 80 to 90 parts of oily solvent by mass, which not only pollutes the environment, but also has low effective ingredients and poor decontamination effect. At the same time, the dispersing solubilizing agent contains dimethyl silicone oil. Summary of the invention

[0005] In view of the existing deficiencies, the present invention provides a laundry free-washing decontamination spray.

[0006] The technical solution adopted by the present invention to solve the technical problem is: a non-washing decontamination spray for clothing is prepared from the following components in parts by weight: 1-3 parts of a surfactant solution, 16-27 parts of an organic solvent, 1-3 parts of a dry powder, and 70-80 parts of a compressed gas, wherein the surfactant solution is prepared by mixing the following components: 10-15 parts of an ionic surfactant, 2-5 parts of a non-ionic surfactant, and 80-88 parts of pure water; the ionic surfactant is sodium dodecyl sulfate, and the non-ionic surfactant is fatty alcohol polyoxyethylene ether; the dry powder is composed of the following components in parts by weight: 47-79 parts of silica gel powder, 10-25 parts of aluminum oxide, 10-25 parts of sodium bicarbonate, and 1-3 parts of selenium disulfide; the organic solvent is composed of the following components in parts by weight: 80-88 parts of n-propane bromide, 2-5 parts of sodium citrate, and 10-15 parts of anhydrous ethanol or isopropanol.

[0007] Preferably, the compressed gas is any one of methane, nitrogen and carbon dioxide.

[0008] A method for preparing a non-washing decontamination spray for clothing comprises the following steps:

[0009] S1, mixing an ionic surfactant and a nonionic surfactant in pure water to prepare a surfactant solution;

[0010] S2, mixing surfactant solution, organic solvent and dry powder to prepare a detergent;

[0011] S3, filling the detergent and compressed gas into a detergent spray; wherein the ionic surfactant is sodium dodecyl sulfate, and the non-ionic surfactant is fatty alcohol polyoxyethylene ether; the dry powder is composed of the following components: silica gel powder, aluminum oxide, sodium bicarbonate, selenium disulfide; the organic solvent is composed of the following components: n-propane bromide, sodium citrate, anhydrous ethanol or isopropanol.

[0012] Preferably, in step S1, the weight ratio of the ionic surfactant, the nonionic surfactant and the pure water is 10-15 parts: 2-5 parts: 80-88 parts.

[0013] Preferably, before step S2, the step also includes S2a: preparation of an organic solvent, mixing n-propane bromide, sodium citrate, anhydrous ethanol or isopropanol in a weight ratio of 80-88 parts: 2-5 parts: 10-15 parts to prepare an organic solvent; the weight ratio of the surfactant solution, the organic solvent and the dry powder is 3.5-15 parts: 80-88 parts: 3.5-15 parts.

[0014] Preferably, the compressed gas is any one of methane, nitrogen and carbon dioxide, and the weight ratio of the decontaminant to the compressed gas is 20-30 parts:70-80 parts.

[0015] Preferably, the dry powder is composed of the following components in parts by weight: 47-79 parts of silica gel powder, 10-25 parts of aluminum oxide, 10-25 parts of sodium bicarbonate, and 1-3 parts of selenium disulfide.

[0016] The beneficial effects of the present invention are as follows: the invention adopts the compound use of ionic surfactant and non-ionic surfactant, which not only has good water solubility, electrolyte resistance and stability, little environmental pollution or even non-toxic and harmless, but also has the best degreasing and decontamination effect under the appropriate ratio, and can quickly clean common water-based and oily stubborn stains at the same time. The dry powder has a strong adsorption capacity, and the stains removed by the detergent on the surface of the clothes can be quickly adsorbed out, and the solvent dosage is small, the drying time is short, and after the decontamination is completed, the powder adsorbed on the surface of the clothes can be gently patted away by hand or sucked away by a vacuum cleaner, and the spray can be made by compressed gas, and the oily and water-based stains on the fabric can be sprayed using a spray can packaging, and the dirt will be quickly dissolved by the organic solvent and adsorbed on the surface of the dry powder. After the powder dries, it quickly agglomerates, and the dirt can be easily patted off from the fabric together with the dry powder. The entire decontamination process does not require water washing, has high efficiency, no secondary residue, rapid decontamination, and is easy to handle. It can be applied to a small area, is portable, and has no restrictions on usage conditions, meeting people's needs for convenient and rapid stain removal. DETAILED DESCRIPTION

[0017] The present invention will be further described below in conjunction with the examples for a clear and complete description. It should be understood that these examples are used to illustrate the present invention and are not intended to limit the scope of the present invention. The implementation conditions used in the examples can be further adjusted according to the conditions of the specific manufacturer, and the unspecified implementation conditions are generally the conditions in conventional experiments. The following is an explanation of the relevant terms in the examples of the present invention.

[0018] 1. Decontamination rate

[0019] Select a clean white polyester knitted fabric of 6cm×4cm×2cm, apply edible oil on the fabric in a quantitative manner, try to ensure that the stain range is close to 2cm*2cm*1cm, and use the decontamination spray of the present invention to remove the stain after the stain is dried. First, shake the tank repeatedly and evenly, keep the tank vertical and spray it directly on the oil stain at a distance of 10-20cm from the fabric. Then, after it is air-dried, pat it off by hand or brush it off with a brush. Take pictures with the same shooting parameters before and after decontamination to ensure that the fabric size and whiteness in the photos are consistent. By comparing with the photos before decontamination, use drawing software to select the fabric within the original stain range in the photos after decontamination, and name this part of the rectangular range S, obtain the total pixels within the S range, record it as S1, and take color at the clean fabric to obtain its RGB value, count all the total pixels within the S range with the same RGB value as the clean fabric, record it as S2, then the decontamination rate R (%) = S2 / S1*100%.

[0020] 2. Whiteness

[0021] Select a clean white polyester knitted fabric of 6cm×4cm×2cm, apply edible oil on the fabric in a quantitative manner, try to ensure that the stain range is close to 2cm*2cm*1cm, and use the decontamination spray of the present invention to remove the stain after the stain is dried. First, shake the can repeatedly to make it uniform, keep the can vertically at a distance of 10-20cm from the fabric and spray directly on the oil stain. Then wait for it to air dry, and then pat it off by hand or brush off the white powder formed by the product on the fabric with a brush. The whiteness test refers to the AATCC Test Method 110-2005 standard, and the "WSB-2" whiteness meter is used to measure the whiteness of the fabric.

[0022] The “blank sample” is white polyester knitted fabric without stains;

[0023] The “Uncleaned Blank” was a white polyester knit fabric that was stained but not cleaned.

[0024] 3. Permeability

[0025] Refer to the canvas sedimentation method (GB 5557-1985 surfactant textile auxiliaries penetration determination wetting method), the specific steps are:

[0026] (1) Use a measuring cylinder to measure 800 mL of a 2.5 g / L penetrant (detergent) solution, transfer it into a 1000 mL beaker, and adjust the temperature to 25 ± 1 °C (Note: the concentration of the detergent is the concentration when the concentration of the active ingredient is equal to 2.5 g / L. Taking Example 1 as an example, the content of the penetrant is 5%, so the concentration of the dilution in Example 1 should be 20 times, that is, 40 g / L).

[0027] (2) Cut the standard polyester cloth into discs with a diameter of 35 mm, ensuring that the weight of each disc is between 0.38 and 0.39 g, and prepare fish hooks weighing 20 to 40 mg.

[0028] (3) Hook the tip of the fishhook onto the canvas disc 2 to 3 mm from the edge, tie the other end of the fishhook with a silk thread, and connect the end of the silk thread to the small hook at the end of the wire rack. Move the rack into the above beaker and place it on the edge of the beaker so that the polyester disc is immersed in the solution and its top is about 10 mm below the liquid. Immediately start the stopwatch.

[0029] (4) As the penetrant wets the polyester disc, when the specific gravity is greater than that of the solution, the canvas disc begins to settle. The end point is when the lower end of the fishhook touches the bottom of the cup. Record the settling time. Repeat the test 10 times and calculate the average value. The shorter the time, the better the permeability of the solution.

[0030] According to an embodiment of the present invention, a laundry detergent spray and a preparation method thereof are prepared from the following components in parts by weight: 1-3 parts of a surfactant solution, 16-27 parts of an organic solvent, 1-3 parts of a dry powder, and 70-80 parts of a compressed gas, preferably 1.6-2.5 parts of a surfactant solution, 18-25 parts of an organic solvent, 1.6-2.5 parts of a dry powder, and 72-77 parts of a compressed gas, wherein the surfactant solution is prepared by mixing the following components: 10-15 parts of an ionic surfactant, 2-5 parts of a non-ionic surfactant, and 80-88 parts of pure water, preferably 12-13 parts of an ionic surfactant, 3-4 parts of a non-ionic surfactant, and 83-85 parts of water. As for the surfactant solution, the ionic surfactant is sodium dodecyl sulfate (K12), and the non-ionic surfactant is fatty alcohol polyoxyethylene ether (AEO-9); as for the organic solvent, the organic solvent is composed of the following components in parts by weight: 80-88 parts of n-propane bromide, 2-5 parts of sodium citrate, and 10-15 parts of anhydrous ethanol or isopropanol, preferably 83-85 parts of n-propane bromide, 3-4 parts of sodium citrate and 12-13 parts of anhydrous ethanol. Or isopropanol; for dry powder, the dry powder is composed of the following components in parts by weight: 47-79 parts of silica gel powder, 10-25 parts of aluminum oxide, 10-25 parts of sodium bicarbonate, 1-3 parts of selenium disulfide, preferably 57.5-68.5 parts of silica gel powder, 15-20 parts of aluminum oxide, 15-20 parts of sodium bicarbonate and 1.5-2.5 parts of selenium disulfide; for compressed gas, the compressed gas is any one of methane, nitrogen and carbon dioxide, preferably nitrogen.The decontamination spray made in this way can quickly clean common water-based and oily stubborn stains at the same time. The dry powder in it has a strong adsorption capacity and can quickly adsorb the stains removed by the decontamination agent on the surface of clothes. After the decontamination is completed, the powder adsorbed on the surface of the clothes can be gently patted away by hand or sucked away by a vacuum cleaner. The dry powder is an adsorbent composed of multiple components. The silica gel powder is mainly used to absorb and dry the oil stains on the surface of the fabric, while the aluminum oxide absorbs moisture and quickly agglomerates to facilitate subsequent cleaning. Sodium bicarbonate itself has a certain decontamination ability and can quickly dry the decontamination agent sprayed on the surface of clothes to achieve the effect of rapid decontamination. The second step is to adjust the pH value. In the neutral, disulfide The addition of selenium can achieve a certain mildew removal effect; at the same time, the organic solvent used in the present invention is also a mixed solvent, and n-propane bromide is used as the main organic solvent, which has the characteristics of strong cleaning ability, low boiling point, and fast drying, especially for grease, particles, organic matter, etc. It has a highly efficient decontamination ability. In addition, n-propane bromide has a low ozone depletion index and low earth effect, which meets environmental protection requirements and solves the problem of environmental pollution caused by traditional chlorinated solvents such as dichloromethane, trichloroethane, and trichloroethylene. Moreover, on the basis of n-propane bromide, a small amount of sodium citrate is added as a buffer and emulsifier, which can significantly improve the decontamination effect of the detergent. Anhydrous ethanol is added as a dispersion carrier, which can well disperse the organic solvent evenly.

[0031] The specific preparation method thereof comprises the following steps:

[0032] S1, mixing an ionic surfactant and a non-ionic surfactant in pure water to prepare a surfactant solution; the ionic surfactant is sodium lauryl sulfate, and the non-ionic surfactant is fatty alcohol polyoxyethylene ether. When mixed, the weight ratio of the ionic surfactant, the non-ionic surfactant and pure water is 10-15 parts: 2-5 parts: 80-88 parts; the pure water can be one or more of industrial grade deionized water and ultrapure water.

[0033] S2, a detergent is prepared by mixing a surfactant solution, an organic solvent and a dry powder; the organic solvent and the dry powder are mixed evenly before mixing them; the mixed organic solvent is prepared by mixing propyl bromide, sodium citrate, anhydrous ethanol or isopropanol in a weight ratio of 80-88 parts: 2-5 parts: 10-15 parts to prepare the organic solvent; the mixed dry powder is prepared by mixing 47-79 parts by weight of silica gel powder, 10-25 parts by weight of alumina, 10-25 parts by weight of sodium bicarbonate and 1-3 parts by weight of selenium disulfide; finally, the surfactant solution, the organic solvent and the dry powder are mixed to prepare the detergent, and at this time, the weight ratio of the surfactant solution, the organic solvent and the dry powder is 3.5-15 parts: 80-88 parts: 3.5-15 parts.

[0034] S3, filling the detergent and compressed gas into a decontamination spray, the compressed gas is selected from any one of methane, nitrogen, and carbon dioxide, preferably nitrogen, the weight ratio of the detergent to the compressed gas is 20-30 parts:70-80 parts, first filling the prepared detergent into the product packaging bottle, sealing and pressing the packaging bottle through a sealing mold, and then filling the compressed gas into the packaging bottle to obtain a wash-free decontamination spray.

[0035] The specific embodiments are as follows:

[0036] Example 1, by weight, when preparing a surfactant solution, 10 parts of sodium dodecyl sulfate, 2 parts of fatty alcohol polyoxyethylene ether and 88 parts of industrial-grade deionized water; an organic solvent, 80 parts of n-propane bromide, 5 parts of sodium citrate and 15 parts of anhydrous ethanol; a dry powder, 47 parts of silica gel powder, 25 parts of aluminum oxide, 25 parts of sodium bicarbonate and 3 parts of selenium disulfide, and the compressed gas is methane; the detergent is prepared by mixing the surfactant solution: the organic solvent: the dry powder with The weight ratio is 3.3:90:6.7, and the mixture is stirred evenly. Then, the detergent is filled to form a spray. The prepared detergent is filled in a product packaging bottle, and the packaging bottle is sealed and pressed by a sealing mold. Compressed gas is poured into the packaging bottle. At this time, the detergent: compressed gas = 30:70, and a wash-free detergent spray is obtained. The weight proportions of each component in the obtained wash-free detergent spray are: 1 part of surfactant solution, 27 parts of organic solvent, 2 parts of dry powder, and 70 parts of compressed gas.

[0037] Example 2, in terms of mass fractions, when preparing a surfactant solution, 15 parts of sodium dodecyl sulfate, 5 parts of fatty alcohol polyoxyethylene ether and 80 parts of industrial-grade ultrapure water are used; the organic solvent includes 88 parts of n-propane bromide, 2 parts of sodium citrate and 10 parts of isopropanol; the dry powder includes 79 parts of silica gel powder, 10 parts of aluminum oxide, 10 parts of sodium bicarbonate and 1 part of selenium disulfide; the compressed gas is nitrogen; the surfactant solution: organic solvent: dry powder are stirred evenly in a weight ratio of 15:80:5, assembled into a filling port, the packaging bottle is sealed and pressed through a sealing mold, and compressed gas is poured into the packaging bottle, the detergent: compressed gas = 20:80, to obtain a wash-free cleaning spray, and the weight fractions of the components in the obtained wash-free cleaning spray are: 3 parts of surfactant solution, 16 parts of organic solvent, 1 part of dry powder, and 80 parts of compressed gas.

[0038] Example 3, in terms of mass fractions, when preparing a surfactant solution, 12 parts of sodium lauryl sulfate, 3 parts of fatty alcohol polyoxyethylene ether and 85 parts of pure water; the pure water includes 80 parts of industrial grade ultrapure water and 20 parts of deionized water; the organic solvent includes 83 parts of n-propane bromide, 4 parts of sodium citrate and 13 parts of anhydrous ethanol; the dry powder includes 57.5 parts of silica gel powder, 20 parts of aluminum oxide, 20 parts of sodium bicarbonate and 2.5 parts of selenium disulfide, and the compressed gas is carbon dioxide; the surface The surfactant solution: organic solvent: dry powder are stirred evenly in a weight ratio of 5.4:89.2:5.4, and the mixture is assembled into a filling port to form the mixture. The packaging bottle is sealed and pressed by a sealing mold, and compressed gas is poured into the packaging bottle. The detergent: compressed gas is 28:72 to obtain a wash-free cleaning spray. The weight proportions of the components in the obtained wash-free cleaning spray are: 1.5 parts of surfactant solution, 25 parts of organic solvent, 1.5 parts of dry powder, and 72 parts of compressed gas.

[0039] Comparative Example 3-1, in Example 3, the weight ratio of surfactant solution: organic solvent: dry powder is adjusted so that the weight portion of the surfactant solution in the obtained no-rinse decontamination spray is 0.5 parts.

[0040] Comparative Example 3-2, in Example 3, the weight ratio of surfactant solution: organic solvent: dry powder is adjusted so that the weight proportion of surfactant solution in the obtained no-rinse decontamination spray is 5 parts.

[0041] Comparative Example 3-3, in Example 3, the weight ratio of surfactant solution: organic solvent: dry powder is adjusted so that the weight proportion of organic solvent in the obtained no-rinse decontamination spray is 5 parts.

[0042] Comparative Example 3-4, in Example 3, the weight ratio of surfactant solution: organic solvent: dry powder is adjusted so that the weight proportion of organic solvent in the obtained no-rinse decontamination spray is 40 parts.

[0043] Comparative Examples 3-5, in Example 3, the weight ratio of surfactant solution: organic solvent: dry powder is adjusted so that the weight portion of dry powder in the obtained no-wash decontamination spray is 0.5 parts.

[0044] Comparative Examples 3-6, in Example 3, the weight ratio of surfactant solution: organic solvent: dry powder is adjusted so that the weight portion of the organic solvent in the obtained no-rinse decontamination spray is 3 parts.

[0045] Comparative Examples 3-7: In Example 3, the ionic surfactant sodium lauryl sulfate is completely replaced by the non-ionic surfactant fatty alcohol polyoxyethylene ether.

[0046] Comparative Examples 3-8: In Example 3, all fatty alcohol polyoxyethylene ethers were replaced with sodium lauryl sulfate.

[0047] Comparative Examples 3-9: In Example 3, all the n-propane bromide in the organic solvent was replaced by sodium citrate.

[0048] Comparative Examples 3-10: In Example 3, all the sodium citrate in the organic solvent was replaced by n-propane bromide.

[0049] Comparative Example 3-11, in Example 3, the silica gel powder and sodium bicarbonate in the dry powder are replaced with aluminum oxide and selenium disulfide respectively.

[0050] Comparative Examples 3-12, in Example 3, the aluminum oxide and selenium disulfide in the dry powder were replaced with silica gel powder and sodium bicarbonate respectively.

[0051] Example 4, in terms of mass fractions, when preparing a surfactant solution, 13 parts of sodium dodecyl sulfate, 4 parts of fatty alcohol polyoxyethylene ether and 83 parts of pure water; the pure water includes 20 parts of industrial grade ultrapure water and 80 parts of deionized water; the organic solvent includes 85 parts of n-propane bromide, 3 parts of sodium citrate and 12 parts of isopropanol; the dry powder includes 68.5 parts of silica gel powder, 15 parts of aluminum oxide, 15 parts of sodium bicarbonate and 1.5 parts of selenium disulfide, and the compressed gas is nitrogen; the surface The surfactant solution: organic solvent: dry powder are stirred evenly in a weight ratio of 8.9:80:11.1, and the mixture is assembled into a filling port to form the mixture. The packaging bottle is sealed and pressed through a sealing mold, and compressed gas is poured into the packaging bottle. The detergent: compressed gas = 23:77 to obtain a wash-free cleaning spray. The weight proportions of the components in the obtained wash-free cleaning spray are: 2.5 parts of surfactant solution, 18 parts of organic solvent, 2.5 parts of dry powder, and 77 parts of compressed gas.

[0052] Comparative Example 4-1, in Example 4, the samples for the stain removal rate, stain removal power and permeability tests in the performance characterization method were adjusted from white polyester knitted fabric to white cotton fabric.

[0053] Comparative Example 4-2: In Example 4, the samples for the stain removal rate, stain removal power and permeability tests in the performance characterization method were adjusted from white polyester knitted fabric to white linen fabric.

[0054] Comparative Example 4-3, in Example 4, the samples for the stain removal rate, stain removal power and permeability tests in the performance characterization method were adjusted from white polyester knitted fabric to white nylon fabric.

[0055] Comparative Example 4-4: In Example 4, the samples for the stain removal rate, stain removal power and permeability tests in the performance characterization method were adjusted from white polyester knitted fabric to white spandex fabric.

[0056] Comparative Examples 4-5, in Example 4, the samples for the detergency and detergency tests in the performance characterization method were adjusted from being coated with edible oil to being coated with soy sauce.

[0057] Comparative Examples 4-6, in Example 4, the samples for the detergency and detergency tests in the performance characterization method were adjusted from being coated with edible oil to being coated with diesel.

[0058] Comparative Examples 4-7, in Example 4, the samples for the detergency and detergency tests in the performance characterization method were adjusted from being coated with edible oil to being coated with lubricating oil.

[0059] Comparative Examples 4-8, in Example 4, the samples for the stain removal rate and stain removal power tests in the performance characterization method were adjusted from being coated with edible oil to being coated with ink.

[0060] Comparative Examples 4-9, in Example 4, the samples for the detergency and detergency tests in the performance characterization method were adjusted from being coated with edible oil to being coated with artificial synthetic blood.

[0061] The following is a test comparison of the decontamination effects of Example 1, Example 2, Example 3 and Example 4, as shown in the test results of permeability, decontamination rate and whiteness of each example in Table 1:

[0062]

[0063]

[0064] Table 1

[0065] It can be seen from the results in Table 1 that the sedimentation time of the wash-free decontamination spray of each embodiment is less than 4s, which fully demonstrates that the wash-free decontamination spray of the present invention has good permeability. The decontamination rate of the wash-free decontamination spray of each embodiment is higher than 99%, and the whiteness is also higher than 80%, and is close to the whiteness of the blank sample, which shows that the wash-free decontamination spray of the present invention has extremely strong decontamination power and excellent anti-yellowing performance. At the same time, no abnormal situation occurred during the filling and spraying process of the wash-free decontamination spray. At the same time, the wash-free decontamination spray according to the embodiments of the present invention has a wide range of raw materials and little damage to the environment, which fully meets the national environmental protection requirements.

[0066] The following is a comparison of Example 3 and its comparative example, as shown in Table 2, the permeability, stain removal rate and whiteness test results of Example 3 and the comparative example:

[0067]

[0068]

[0069] Table 2

[0070] As can be seen from Table 2, when the surfactant solution is less (Comparative Example 3-1) or the amount of organic solvent is less (Comparative Example 3-3), the decontamination rate and the whiteness after cleaning decrease significantly, and the decontamination effect is poor. This is because when the surfactant solution is less, the wettability of the spray to the fabric fiber and the solubility of the stain are poor. When the amount of organic solvent is less, the solid content is higher, so the fluidity and permeability of the spray are very poor, resulting in poor decontamination effect. When the surfactant solution is excessive (Comparative Example 3-2) or the amount of organic solvent is excessive (Comparative Example 3-4), the decontamination rate and the whiteness after cleaning also show a certain decrease. This is because when the surfactant is excessive, the wettability of the spray to the fabric fiber and the solubility of the stain are poor. When the organic solvent is excessive, the viscosity of the spray will be too low, the fluidity will become stronger, resulting in the inability to agglomerate, affecting the adsorption of the dry powder.

[0071] When no dry powder is added or less is added (Comparative Examples 3-5), the decontamination effect is also slightly reduced. This is because without adding dry powder, it cannot form agglomerates and the drying time is long. In Example 3, an appropriate amount of dry powder is added, in which the silica gel powder component mainly absorbs and dries the oil on the surface of the fabric, and the role of aluminum oxide is to absorb moisture and quickly form agglomerates to facilitate subsequent cleaning. Sodium bicarbonate, which has a certain decontamination ability, can quickly dry the detergent sprayed on the surface of clothing to achieve a rapid decontamination effect. The second is to adjust the pH value to neutral. The addition of selenium disulfide can have a certain mildew removal effect. Therefore, it can have a better adsorption, agglomeration and decontamination effect. However, when an excessive amount of dry powder is added (Comparative Examples 3-6), after the spray is sprayed, the speed of absorbing organic solvents and surfactants is too fast, which affects the decontamination effect, and there is too much dry powder sprayed on the clothes, which is more troublesome to clean.

[0072] When only ionic surfactants (Comparative Examples 3-7) or nonionic surfactants (Comparative Examples 3-8) are used, the decontamination effect is significantly reduced, because the use of one type of surfactant alone can only have good wettability on some fabrics. In Example 3, adding an appropriate amount of ionic and nonionic composite surfactants not only has good water solubility, electrolyte resistance and stability, but also has the best degreasing and decontamination effect at a suitable ratio.

[0073] When all the n-propane bromide in the organic solvent is replaced by sodium citrate or sodium citrate (Comparative Examples 3-9) is replaced by n-propane bromide (Comparative Examples 3-10), the decontamination effect is reduced to a certain extent. This is because n-propane bromide has strong cleaning ability, low boiling point, and fast drying, but poor emulsification effect when used alone. The dissolution and cleaning effects of sodium citrate used alone are too poor. However, when used in combination, a small amount of sodium citrate can be used as a buffer and emulsifier to significantly improve the decontamination effect of the detergent. In Example 3, anhydrous ethanol is also added as a dispersion carrier, which can well disperse the organic solvent evenly. The organic solvent and surfactant first quickly penetrate into the interior of the fabric fiber to thoroughly dissolve the oil stains, and then quickly dry into a mass with the strong adsorption effect of the dry powder. Therefore, it is possible to quickly remove oil without leaving any traces. When the silica gel powder and sodium bicarbonate in the dry powder are replaced by alumina and selenium disulfide respectively (Comparative Example 3-11), or when the alumina and selenium disulfide in the dry powder are replaced by silica gel powder and sodium bicarbonate respectively (Comparative Example 3-12), the decontamination effect is also reduced to a certain extent. This is because the silica gel powder mainly absorbs and dries the oil stains on the surface of the fabric, and the role of alumina is to absorb moisture and quickly agglomerate to facilitate subsequent cleaning. Only when the two are used in combination can they have a cleaning and cleaning effect on both oily and water-based stains. In addition, sodium bicarbonate itself has a certain decontamination ability. After being dissolved in water, it can quickly dry the detergent sprayed on the surface of clothing to achieve a rapid decontamination effect. It also has the function of adjusting the pH value to be close to neutral. The addition of selenium disulfide can achieve a certain effect in removing mildew from fabrics.

[0074] The following is a comparison of Example 4 and its comparative example, as shown in Table 3, the permeability, stain removal rate and whiteness test results of Example 4 and the comparative example:

[0075]

[0076]

[0077] Table 3

[0078] As can be seen from Table 3, the wash-free detergent of the present invention not only has excellent decontamination ability for common fabrics such as cotton, linen, polyester, nylon, spandex, etc., but also has a good decontamination effect on daily stains such as soy sauce, diesel, lubricating oil, ink and blood, with a decontamination rate of more than 98.5% and a whiteness of more than 84% after cleaning.

[0079] Although the present invention has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made on the basis of the present invention. Therefore, these modifications or improvements made on the basis of not departing from the spirit of the present invention all belong to the scope of protection claimed by the present invention.

Claims

1. A non-washing decontamination spray for clothing, characterized in that: The invention is prepared from the following components in parts by weight: 1-3 parts of surfactant solution, 16-27 parts of organic solvent, 1-3 parts of dry powder and 70-80 parts of compressed gas; wherein the surfactant solution is prepared by mixing the following components: 10-15 parts of ionic surfactant, 2-5 parts of non-ionic surfactant and 80-88 parts of pure water; the ionic surfactant is sodium dodecyl sulfate, and the non-ionic surfactant is fatty alcohol polyoxyethylene ether; the dry powder is composed of the following components in parts by weight: 47-79 parts of silica gel powder, 10-25 parts of aluminum oxide, 10-25 parts of sodium bicarbonate and 1-3 parts of selenium disulfide; the organic solvent is composed of the following components in parts by weight: 80-88 parts of normal bromopropane, 2-5 parts of sodium citrate and 10-15 parts of anhydrous ethanol or 80-88 parts of normal bromopropane, 2-5 parts of sodium citrate and 10-15 parts of isopropanol.

2. The laundry detergent spray according to claim 1, characterized in that: The compressed gas is any one of methane, nitrogen and carbon dioxide.

3. A method for preparing the free-wash decontamination spray for clothing according to claim 1 or 2, characterized in that: Here are the steps: S1, mixing an ionic surfactant and a nonionic surfactant in pure water to prepare a surfactant solution; S2, mixing surfactant solution, organic solvent and dry powder to prepare detergent; S3, filling the decontamination agent and the compressed gas into a decontamination spray.

4. The method for preparing the free-wash decontamination spray for clothing according to claim 3, characterized in that: Before step S2, the method further includes step S2a: preparation of an organic solvent, wherein n-propane bromide, sodium citrate and anhydrous ethanol or n-propane bromide, sodium citrate and isopropanol are mixed in a weight ratio of 80-88:2-5:10-15 to prepare an organic solvent.

5. The method for preparing the free-wash decontamination spray for clothing according to claim 3, characterized in that: The compressed gas is any one of methane, nitrogen and carbon dioxide, and the weight ratio of the decontaminant to the compressed gas is 20-30:70-80.

Images