Glass cleaning agent with long-acting antifogging function and preparation method thereof

Abstract

The invention provides a glass cleaner with a long-acting antifogging function and a preparation method thereof, and belongs to the technical field of detergents, the glass cleaner comprises the following components by weight: 3-5 parts of a detergent, 2-4 parts of a PVP-PFPE graft, 0.5-1.5 parts of a stabilizer, 0.1-0.2 part of a preservative, 1-4 parts of a regulator, 3-5 parts of a solubilizer, and 150-200 parts of water; wherein the detergent is prepared from castor oil methyl ester ethoxylate and coconut diethanolamide; the PVP-PFPE graft is formed by carrying out graft copolymerization on polyvinylpyrrolidone and activated perfluoropolyether through free radicals. The glass cleaning agent prepared by the invention has excellent dirt-removing power and a long-acting anti-fog function.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of detergents, and particularly relates to a glass cleaner with long-term anti-fog function and a preparation method thereof. BACKGROUND

[0002] A glass cleaner is a chemical preparation specially used for removing pollutants (such as dust, oil stains, water marks, fingerprints, etc.) on the surface of glass, and is widely used in the automobile, household, building, electronic equipment and optical instrument industries. With the increasing demand for glass cleanliness in automobiles and electronic products, and the popularity of large-area glass curtain walls in modern buildings, the demand for glass cleaners is also growing. Traditional glass cleaners are mostly liquid formulations, which reduce the surface tension through surfactants, dissolve the stains, and then complete the cleaning by wiping or rinsing. The advantages of traditional glass cleaners are convenient operation, high cleaning efficiency, and fast drying to avoid water stains. In recent years, with the enhancement of people's environmental protection and health consciousness, low-toxicity, ammonia-free and biodegradable environmentally friendly cleaners have gradually replaced traditional products containing strong acids, bases or volatile organic compounds. In addition, the market demand for multifunctional glass cleaners is increasingly evident, not only requiring strong cleaning power, but also having anti-fog, anti-static or scratch-resistant, anti-freezing and other functions to adapt to different application scenarios.

[0003] At present, the formula of glass cleaner mainly depends on surfactants, solvents, drying aids or film-forming substances. For example, most commercially available glass cleaner products often use deionized water as the base, and then add some surfactants, additives, etc., to uniformly cover the glass surface by spraying. However, such cleaning agent formulations have obvious defects: first, it is easy to leave stripes or white spots after cleaning, especially in hard water areas, where residual minerals are difficult to completely remove; second, the anti-fog function is short-lived, and the hydrophobic effect of surfactants alone cannot maintain the glass transparency for a long time; third, some environmentally friendly products have insufficient cleaning power and need to be used multiple times to achieve the desired effect. In addition, some industrial-grade glass cleaners often use alkaline substances or complexing agents, which can easily corrode the glass coating layer, resulting in a decrease in light transmittance, and sometimes require ultrasonic cleaning, increasing the cost of use. Existing anti-fog cleaners achieve anti-fog by adding film-forming agents such as polyvinylpyrrolidone or hydrophilic agents such as peregal. However, the anti-fog film has a short service life and is easily hydrolyzed in a high-humidity environment.

[0004] In view of the limitations of existing glass cleaners, researchers have tried to improve performance through formulation optimization and material innovation. For example, introducing a biological enzyme preparation into the cleaner formula to direct decomposition of organic pollutants, but the activity of the enzyme is limited by pH and temperature, and the cost is often higher than that of traditional chemical formula; or introducing gradient hydrophobic coating technology in glass cleaning, adjusting the surface energy distribution through a multi-layer composite structure such as a hydrophilic / hydrophobic equilibrium layer, which can theoretically extend the anti-fog period, but such coatings have high requirements for uniformity and drying conditions, and are prone to unstable performance due to process fluctuations; or using reversible bonding mechanisms to achieve self-repairing function in glass cleaning, but they are sensitive to environmental temperature / humidity and are prone to uncontrollable structural reorganization in practical applications. In addition, attempts have been made to introduce fluorocarbons into the formula to improve hydrophobicity, but the synthesis process of fluorine-based compounds involves highly toxic raw materials, and long-term use can cause film peeling or glass substrate corrosion, which does not meet the green environmental protection needs. Therefore, there is an urgent need for a glass cleaner that can efficiently clean and has long-term anti-fog function. SUMMARY

[0005] The purpose of the present application is to provide a glass cleaner with long-term anti-fog function and a preparation method thereof, which has excellent decontamination and cleaning ability and long-term anti-fog function through the synergistic effect of specific decontaminants, PVP-PFPE grafts, stabilizers and other components.

[0006] In order to achieve the above purpose, the present application provides the following technical solutions: The present application provides a glass cleaner with long-term anti-fog function, which comprises the following components by weight: 3-5 parts of decontaminant, 2-4 parts of PVP-PFPE graft, 0.5-1.5 parts of stabilizer, 0.1-0.2 parts of preservative, 1-4 parts of regulator, 3-5 parts of solubilizer, 150-200 parts of water.

[0007] Preferably, the decontaminant is composed of castor oil methyl ester ethoxylate and cocodihydroxyethylamine.

[0008] Preferably, the weight ratio of castor oil methyl ester ethoxylate and cocodihydroxyethylamine is 2-4:1.

[0009] The molecular structure of castor oil methyl ester ethoxylate is composed of castor oil acid methyl ester hydrophobic chain and polyoxyethylene ether hydrophilic chain. The hydrophobic chain penetrates non-polar dirt (such as oil and wax) by van der Waals force, and the hydrophilic chain realizes rapid coiling and dispersion by hydrogen bond. Its low-foaming property ensures no residue and guarantees the glass light transmittance. The stain dispersion force is outstanding, and the water-soluble speed is fast. The strong polarity of amide group and hydroxyl group of cocamide diethanolamine anchors the polar dirt (such as gum and shellac) by hydrogen bond, breaks the binding force between the dirt and the glass interface, and at the same time, the alkyl chain provides moderate hydrophobicity to supplement the emulsification effect on mineral oil. The two have a synergistic effect. Castor oil methyl ester ethoxylate effectively reduces the interfacial tension, significantly improves the penetration efficiency of cocamide diethanolamine, and makes it easier to penetrate into the dirt gap. The foam stabilization of cocamide diethanolamine prolongs the emulsification contact time of castor oil methyl ester ethoxylate, enhances the continuous stripping force on stubborn stains, and provides efficient and reliable stain removal basis for long-acting anti-fogging cleaner.

[0010] Preferably, the preparation method of the PVP-PFPE graft includes the following steps: Put perfluoropolyether alcohol, glycidyl methacrylate, 4-dimethylaminopyridine and ethyl acetate into a sealed reaction kettle, and react under the condition of nitrogen atmosphere. Add glacial acetic acid, remove ethyl acetate by rotary evaporation, and obtain activated perfluoropolyether. Put polyvinylpyrrolidone and cyclohexanol into a sealed reaction kettle, and dissolve under the condition of nitrogen atmosphere. Add activated perfluoropolyether and azobisisobutyronitrile, and react under the condition of heat preservation. Cool, add hydroquinone and stir, then add acetone and stir uniformly. After standing, filter, wash with acetone, and freeze-dry to obtain PVP-PFPE graft.

[0011] Preferably, the mass ratio of perfluoropolyether alcohol and glycidyl methacrylate is 5-15:1-5.

[0012] Preferably, the mass ratio of perfluoropolyether alcohol, 4-dimethylaminopyridine and glacial acetic acid is 5-15:0.01-0.1:0.1-0.3.

[0013] Preferably, the mass ratio of polyvinylpyrrolidone and activated perfluoropolyether is 3-5:10-15.

[0014] Preferably, the mass ratio of polyvinylpyrrolidone, azobisisobutyronitrile and hydroquinone is 3-5:0.03-0.06:0.007-0.015.

[0015] In the preparation process of the PVP-PFPE graft, first, under the catalysis of 4-dimethylaminopyridine, the hydroxyl group of perfluoropolyether alcohol attacks the epoxy group of glycidyl methacrylate to form an ester bond connected double bond containing activated perfluoropolyether; wherein the addition of glacial acetic acid after the reaction can quench the basicity of 4-dimethylaminopyridine to prevent self-polymerization of GMA caused by residual 4-dimethylaminopyridine. Secondly, the methylene radical of the polyvinylpyrrolidone main chain is initiated by azobisisobutyronitrile to attack the double bond of the activated perfluoropolyether, thereby free radical graft copolymerization occurs to finally form the PVP-PFPE graft; wherein hydroquinone is added as a polymerization inhibitor after the reaction to quench the residual free radicals to prevent gelation during storage.

[0016] After the above PVP-PFPE graft is added to the glass cleaner formula, the perfluoropolyether chain segment is oriented on the glass surface to form a low-energy hydrophobic film, which blocks the wetting of rainwater, and the PVP chain segment absorbs environmental water molecules through hydrogen bonding to promote the uniform spreading of condensed water into a transparent water film, and the two work together to achieve the protection of high-wet rain resistance (hydrophobic end) and temperature difference anti-fogging (hydrophilic end), thereby improving environmental adaptability; compared with a physical mixing formula, the graft structure greatly enhances the adhesion, the covalent bond connection between PVP and perfluoropolyether in the graft copolymer avoids phase separation, the film layer stability is significantly improved, and the anti-fogging life and wiping resistance are further improved; in addition, the water absorption and swelling of the PVP chain segment can fill the micro-scratches on the film surface to restore the anti-fogging function, and the anti-pollution and anti-adhesion properties of the perfluoropolyether chain segment reduce oil adsorption, thereby maintaining the light transmittance for a long time.

[0017] Preferably, the preparation method of the PVP-PFPE graft comprises the following steps: According to parts by weight, 5-15 parts of perfluoropolyether alcohol, 1-5 parts of glycidyl methacrylate, 0.01-0.1 parts of 4-dimethylaminopyridine, and 30-50 parts of ethyl acetate are added to a sealed reaction kettle, heated to 60-70℃ under a nitrogen atmosphere, and reacted for 3-6h, 0.1-0.3 parts of glacial acetic acid is added, and the ethyl acetate is removed by rotary evaporation at 45-50℃ to obtain an activated perfluoropolyether. 3-5 parts of polyvinylpyrrolidone, 40-60 parts of cyclohexanol are added to a sealed reaction kettle, stirred and dissolved under a nitrogen atmosphere at 55-65℃, then 10-15 parts of activated perfluoropolyether, 0.03-0.06 parts of azobisisobutyronitrile are added, and the reaction is carried out at 55-65℃ for 6-8h, cooled to room temperature, 0.007-0.015 parts of hydroquinone is added and stirred for 20-40min, then 5-8 times the volume of acetone is added and stirred uniformly, and after standing for 1-2h, it is filtered, washed with acetone for 2-5 times, and freeze-dried to obtain the PVP-PFPE graft.

[0018] Preferably, the stabilizer is composed of sodium polyacrylate and polyether modified silicone oil.

[0019] In terms of stain removal, sodium polyacrylate disperses and separates oil stain particles through electrostatic repulsion, prevents their redeposition on the glass surface, ensures the sustained action efficiency of the stain removal system, improves the oil film removal rate, and its slight thickening property prolongs the cleaning agent retention time, strengthens the penetration and emulsification of stubborn stains; in terms of anti-fogging, polyether modified silicone oil helps to reduce the dynamic surface tension, so that the PVP-PFPE grafting product can realize better directional spreading on the glass surface to form a uniform thickness anti-fogging film, the hydrophobic cooperation between the siloxane segment and the perfluoropolyether improves the film density, blocks the film swelling and falling caused by the invasion of environmental water vapor, and the sodium polyacrylate inhibits the aggregation and sedimentation of the grafting product, and the polyether silicone oil prevents the imbalance of components caused by high temperature volatilization, so that the anti-fogging life is greatly prolonged.

[0020] Preferably, the weight ratio of the sodium polyacrylate and the polyether modified silicone oil is 1-3:3.

[0021] Preferably, the preservative is at least one of sodium benzoate, nipagin and methyl isothiazolinone.

[0022] Preferably, the preservative is sodium benzoate.

[0023] Preferably, the adjusting agent consists of sodium citrate and tetrasodium glutamate diacetate.

[0024] Preferably, the adjusting agent consists of sodium citrate and tetrasodium glutamate diacetate in a weight ratio of 1:1-3.

[0025] Preferably, the solubilizing agent is at least one of diethylene glycol monobutyl ether, dipropylene glycol methyl ether and propylene glycol phenyl ether.

[0026] Preferably, the solubilizing agent is diethylene glycol monobutyl ether.

[0027] The application also provides a preparation method of the glass cleaner with long-acting anti-fogging function, comprising the following steps: According to the component formula, each component is weighed, the stain remover, the PVP-PFPE grafting product, the stabilizer, the preservative, the adjusting agent, the solubilizing agent and deionized water are added into a reaction kettle and uniformly mixed and stirred to obtain the glass cleaner with long-acting anti-fogging function.

[0028] Compared with the prior art, the application has the following advantages and beneficial effects: (1) The application provides a glass cleaner with long-acting anti-fogging function and a preparation method thereof, which uses a stain remover composed of castor oil methyl ester ethoxylate and cocodimonium diethanolamide, a PVP-PFPE grafting product obtained by free radical graft copolymerization of polyvinylpyrrolidone and activated perfluoropolyether as raw materials, a stabilizer and the like, and the components synergistically act to make the glass cleaner have excellent stain removal and cleaning capacity and long-acting anti-fogging function.

[0029] (2) The decontaminant used in the application, wherein the hydrophobic chain of castor oil methyl ester ethoxylate penetrates non-polar dirt (such as oil and wax) by van der Waals force, and the hydrophilic chain realizes rapid rolling-off and dispersion by hydrogen bond, the strong polarity amide group and hydroxyl group of cocodimonium ethanolamine anchor polar dirt (such as gum and shellac) by hydrogen bond, break the binding force of dirt and glass interface, and the alkyl chain provides moderate hydrophobicity to supplement the emulsification effect on mineral oil, the two have a synergistic effect after compounding, castor oil methyl ester ethoxylate effectively reduces the interfacial tension, significantly improves the penetration efficiency of cocodimonium ethanolamine, and makes it easier to penetrate into the dirt gap, and the foam stabilizing effect of cocodimonium ethanolamine prolongs the emulsification contact time of castor oil methyl ester ethoxylate, and enhances the continuous stripping force on stubborn dirt.

[0030] (3) After the PVP-PFPE grafting material is added to the cleaning agent formula, the perfluoropolyether chain segment is arranged on the glass surface to form a low-energy hydrophobic film, which blocks the wetting of rainwater, and the PVP chain segment absorbs environmental water molecules by hydrogen bond to promote the uniform spreading of condensed water into a transparent water film, and the two realize the protection of high-wet rain resistance (hydrophobic end) and temperature difference anti-fogging (hydrophilic end) in cooperation, and improve the environmental adaptability; compared with the physical mixing formula, the grafting structure greatly enhances the adhesion, the covalent bond connection between PVP and perfluoropolyether in the graft copolymer avoids phase separation, the film layer stability is significantly improved, and the anti-fogging life and wiping resistance are further improved. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the application will be described below in a clear and complete manner. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the application.

[0032] The raw materials used in the embodiments and comparative examples of the application are obtained from self-made or commercially available materials, but are not limited to the following materials: Castor oil methyl ester ethoxylate: model ELM-05, purchased from Zhongqing Cosmetics Technology Co., Ltd.

[0033] Cocodimonium ethanolamine: model 6501 (1:1), purchased from Guoli Chemical Co., Ltd. in Haian County.

[0034] Sodium polyacrylate: model NP-700, purchased from Shanghai Linkmate Biological Engineering Co., Ltd.

[0035] Polyether modified silicone oil: model CJ-1321, purchased from Zhejiang Chuangji Organic Silicon Material Co., Ltd.

[0036] Perfluoropolyether alcohol: brand PFPE-OH-1000, purchased from Suzhou Cangmu New Material Co., Ltd.

[0037] Polyvinylpyrrolidone: type PVP-K30, purchased from Shanghai Qifu Qing Material Technology Co., Ltd.

[0038] Example 1 The glass cleaner with long-acting anti-fog function is prepared from the following components by weight parts: 4 parts of detergent, 3 parts of PVP-PFPE graft, 1 part of stabilizer, 0.15 parts of preservative, 2.5 parts of regulator, 4 parts of solubilizer, 185 parts of deionized water.

[0039] The detergent is composed of castor oil methyl ester ethoxylate and cocodihydroxyethylamine at a weight ratio of 3:1.

[0040] The stabilizer is composed of sodium polyacrylate and polyether modified silicone oil at a weight ratio of 2:3.

[0041] The preservative is sodium benzoate.

[0042] The regulator is composed of sodium citrate and tetrasodium glutamate diacetate at a weight ratio of 1:2.

[0043] The solubilizer is diethylene glycol monobutyl ether.

[0044] The preparation method of the PVP-PFPE graft includes the following steps: Add 10 parts of perfluoropolyether alcohol, 2.7 parts of glycidyl methacrylate, 0.05 parts of 4-dimethylaminopyridine, and 40 parts of ethyl acetate into a sealed reaction kettle, heat to 65℃ under nitrogen atmosphere, and react for 5h, then add 0.15 parts of glacial acetic acid, remove ethyl acetate by rotary evaporation at 50℃, and obtain activated perfluoropolyether. Add 4 parts of polyvinylpyrrolidone and 50 parts of cyclohexanol into a sealed reaction kettle, heat to 60℃ under nitrogen atmosphere, and stir to dissolve, then add 12 parts of activated perfluoropolyether, 0.04 parts of azobisisobutyronitrile, and react for 7h at 60℃, cool to room temperature, add 0.01 parts of hydroquinone, stir for 30min, then add 6 times volume of acetone, stir uniformly, stand for 1h, filter, wash with acetone for 3 times, and freeze-dry to obtain PVP-PFPE graft.

[0045] The preparation method of the glass cleaner with long-acting anti-fog function provided in this embodiment includes the following steps: Weigh each component according to the component formula, add the detergent, PVP-PFPE graft, stabilizer, preservative, regulator, solubilizer, and deionized water into a reaction kettle, mix and stir uniformly, and obtain the glass cleaner with long-acting anti-fog function.

[0046] Example 2 The present embodiment provides a glass cleaner with long-acting anti-fog function, which is made of the following components by weight: 3 parts of detergent, 2 parts of PVP-PFPE graft, 0.5 parts of stabilizer, 0.1 parts of preservative, 1 parts of regulator, 3 parts of solubilizer, 150 parts of deionized water.

[0047] The detergent is composed of castor oil methyl ester ethoxylate and cocodihydroxyethylamine in a weight ratio of 2:1.

[0048] The stabilizer is composed of sodium polyacrylate and polyether modified silicone oil in a weight ratio of 1:3.

[0049] The preservative is sodium benzoate.

[0050] The regulator is composed of sodium citrate and tetrasodium glutamate diacetate in a weight ratio of 1:1.

[0051] The solubilizer is diethylene glycol monobutyl ether.

[0052] The preparation method of the PVP-PFPE graft is the same as that of Example 1.

[0053] The present embodiment provides a preparation method of a glass cleaner with long-acting anti-fog function, which comprises the following steps: According to the component formula, each component is weighed, and the detergent, PVP-PFPE graft, stabilizer, preservative, regulator, solubilizer, and deionized water are added to the reaction kettle and mixed and stirred uniformly to obtain a glass cleaner with long-acting anti-fog function.

[0054] Example 3 The present embodiment provides a glass cleaner with long-acting anti-fog function, which is made of the following components by weight: 5 parts of detergent, 4 parts of PVP-PFPE graft, 1.5 parts of stabilizer, 0.2 parts of preservative, 4 parts of regulator, 5 parts of solubilizer, 200 parts of deionized water.

[0055] The detergent is composed of castor oil methyl ester ethoxylate and cocodihydroxyethylamine in a weight ratio of 4:1.

[0056] The stabilizer is composed of sodium polyacrylate and polyether modified silicone oil in a weight ratio of 3:3.

[0057] The preservative is sodium benzoate.

[0058] The regulator is composed of sodium citrate and tetrasodium glutamate diacetate in a weight ratio of 1:3.

[0059] The solubilizer is diethylene glycol monobutyl ether.

[0060] The PVP-PFPE graft is prepared by the same method as in Example 1.

[0061] The present example provides a method for preparing a glass cleaner with long-term anti-fog function, comprising the following steps: According to the component formula, each component is weighed, the detergent, PVP-PFPE graft, stabilizer, preservative, regulator, solubilizer, and deionized water are added to the reaction kettle and mixed and stirred uniformly to obtain a glass cleaner with long-term anti-fog function.

[0062] Comparative Example 1 The difference between this comparative example and Example 1 is that the detergent is different, specifically as follows: the detergent is castor oil methyl ester ethoxylate.

[0063] Comparative Example 2 The difference between this comparative example and Example 1 is that the detergent is different, specifically as follows: the detergent is cocodimonium.

[0064] Comparative Example 3 The difference between this comparative example and Example 1 is that the preparation method of the PVP-PFPE graft is different, specifically as follows: the preparation method of the PVP-PFPE graft comprises the following steps: According to the weight parts, 4 parts of polyvinylpyrrolidone, 50 parts of cyclohexanol are added to a sealed reaction kettle, heated to 60°C under nitrogen atmosphere, stirred and dissolved, then 12 parts of perfluoropolyether alcohol, 0.04 parts of azobisisobutyronitrile are added, and the reaction is kept at 60°C for 7h, cooled to room temperature, 0.01 parts of hydroquinone are added and stirred for 30min, then 6 times volume of acetone is added and stirred uniformly, stand for 1h, then filter, wash with acetone for 3 times, freeze-drying to obtain PVP-PFPE graft.

[0065] Comparative Example 4 The difference between this comparative example and Example 1 is that the PVP-PFPE graft is replaced by a mixture composed of polyvinylpyrrolidone and perfluoropolyether alcohol in a weight ratio of 4:12.

[0066] Comparative Example 5 The difference between this comparative example and Example 1 is that the stabilizer is different, specifically as follows: the stabilizer is sodium polyacrylate.

[0067] Comparative Example 6 The difference between this comparative example and Example 1 is that the stabilizer is different, specifically as follows: the stabilizer is polyether modified silicone oil.

[0068] Test Example (1) The detergency test: The test was carried out according to the standard GB / T 23436-2009 Appendix B, and the detergency was reflected by the cleaning power. 10 mL of the glass cleaner with long-term anti-fog function prepared in Examples 1-3 and Comparative Examples 1-6 was taken and diluted to 1 L with deionized water to obtain a test diluent; the clean degree of the glass after being scrubbed with the test diluent and the standard liquid was compared, if the clean degree was worse, it was recorded as 0 level, if the clean degree was the same, it was recorded as 1 level, if the clean degree was slightly better, it was recorded as 2 level, and if the clean degree was obviously better, it was recorded as 3 level, the higher the clean degree level of the test diluent, the stronger the detergency, and the results are shown in Table 1.

[0069] (2) The long-term anti-fog test: the glass surface was cleaned with an ultrasonic cleaning machine, and then dried in an 80℃ oven for 1 h for standby. The glass was cleaned with the glass cleaner with long-term anti-fog function prepared in Examples 1-3 and Comparative Examples 1-6, and after cleaning, the glass was placed for 0 h, 2 h, 4 h and 6 h respectively under the same natural environment, and then the subsequent fogging test was carried out. The glass samples after being placed were fixed at a distance of 10 cm from the steam outlet of the electric steam machine, and the switch was turned on to make hot steam blow to the glass surface, and the anti-fog performance was evaluated by observing the fogging time of the glass surface, the larger the value of the starting fogging time, the better the anti-fog performance, and the results are shown in Table 1.

[0070] Table 1: Test results of detergency and anti-fog performance of glass cleaner From the above test results, it can be seen that the glass cleaner prepared in Examples 1-3 has excellent detergency and long-term anti-fog function, especially the glass cleaner prepared in Example 1 has the best comprehensive performance. This is because the specific detergent, specific PVP-PFPE graft and stabilizer are used in the cleaner formula, thereby significantly improving the detergency and long-term anti-fog function of the glass cleaner. Compared with Examples 1-3, the effect of Comparative Examples 1-2 is worse because castor oil methyl ester ethoxylate and cocodimonium diethanolamide are not used to form the detergent; the effect of Comparative Examples 3-4 is worse because the PVP-PFPE graft prepared by the specific method is not used; the performance of Comparative Examples 5-6 is not as good as Examples 1-3 because polyacrylic acid sodium and polyether modified silicone oil are not used to form the stabilizer; according to the above comparison, the specific technical solution of the present application has good effect.

[0071] The above is the preferred embodiment of the present application, it should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A glass cleaner with long-lasting anti-fog function, characterized in that: The invention comprises the following components by weight: 3-5 parts of a detergent, 2-4 parts of a PVP-PFPE grafted compound, 0.5-1.5 parts of a stabilizer, 0.1-0.2 parts of a preservative, 1-4 parts of a regulator, 3-5 parts of a solubilizer, and 150-200 parts of water; the detergent is composed of castor oil methyl ester ethoxylate and cocoyl diethanolamine.

2. The glass cleaner with long-lasting anti-fog function according to claim 1, characterized in that: The preparation method of the PVP-PFPE grafted material comprises the following steps: Perfluoropolyether alcohol, glycidyl methacrylate, 4-dimethylaminopyridine and ethyl acetate were added to a closed reactor, the temperature was raised under a nitrogen atmosphere for reaction, glacial acetic acid was added, and the ethyl acetate was removed by rotary evaporation to obtain an activated perfluoropolyether; Polyvinyl pyrrolidone and cyclohexanol were added to a closed reaction kettle, heated and stirred to dissolve under a nitrogen atmosphere, activated perfluoropolyether and azobisisobutyronitrile were added, kept warm for reaction, cooled, hydroquinone was added and stirred, and then acetone was added and stirred evenly. After standing, the mixture was filtered, washed, and dried to obtain a PVP-PFPE grafted product.

3. The glass cleaner with long-lasting anti-fog function according to claim 2, characterized in that: The mass ratio of the perfluoropolyether alcohol to glycidyl methacrylate is 5-15:1-5.

4. The glass cleaner with long-lasting anti-fog function according to claim 2, characterized in that: The mass ratio of the polyvinyl pyrrolidone to the activated perfluoropolyether is 3-5:10-15.

5. The glass cleaner with long-lasting anti-fog function according to claim 1, characterized in that: The weight ratio of the castor oil methyl ester ethoxylate to cocoyl diethanolamine is 2-4:

1.

6. The glass cleaner with long-lasting anti-fog function according to claim 1, characterized in that: The stabilizer consists of sodium polyacrylate and polyether modified silicone oil.

7. The glass cleaner with long-lasting anti-fog function according to claim 1, characterized in that: The preservative is at least one of sodium benzoate, paraben, and methylisothiazolinone.

8. The glass cleaner with long-lasting anti-fog function according to claim 1, characterized in that: The regulator consists of sodium citrate and tetrasodium glutamate diacetate.

9. The glass cleaner with long-lasting anti-fog function according to claim 1, characterized in that: The solubilizer is at least one of diethylene glycol monobutyl ether, dipropylene glycol methyl ether, and propylene glycol phenyl ether.

10. The method for preparing a glass cleaner with a long-lasting anti-fog function according to any one of claims 1 to 9, characterized in that: The following steps are involved: The components are weighed according to the component formula, and the detergent, PVP-PFPE grafted product, stabilizer, preservative, regulator, solubilizer and deionized water are added into a reaction kettle and mixed and stirred evenly to obtain a glass cleaner with a long-lasting anti-fog function.

Images