Fragrant glasses cleaning fluid and preparation method thereof

Abstract

The invention provides a fragrant glasses cleaning solution and a preparation method thereof, and relates to the technical field of glasses cleaning solutions. The invention relates to an antibacterial perfume, which is prepared from the following ingredients in parts by weight: 0.8 to 2 parts of fragrant microcapsules, 0.3 to 1 part of polyether modified silicone oil, 0.05 to 0.1 part of modified nano silicon dioxide, 1.5 to 3 parts of glycerinum, 0.5 to 2 parts of compound antibacterial agents, 0.3 to 0.5 part of ethylene diamine tetraacetic acid disodium salt, 8 to 12 parts of alcohols and 78 to 88 parts of deionized water. Wherein the fragrant microcapsules are prepared by wrapping essence in beta-cyclodextrin-chitosan composite microspheres, the composite antibacterial agent comprises benzalkonium chloride and polyhexamethylene biguanide in a weight ratio of (2.5-3.5): 1, and the pH value of the cleaning solution is 6-8. Through microcapsule slow release and pH control, the irritation of the cleaning liquid to eyes is reduced, and the fragrance can last for 8-10 hours; glycerin and polyether modified silicone oil have a synergistic effect, so that the antifogging time of the lens is prolonged to 72 hours, the antibacterial rate within 5 minutes can reach 99.9%, and the wear rate of 100-time coating is less than 0.1%.

Description

Technical Field

[0001] The present invention relates to the technical field of glasses cleaning fluids, and in particular to a scented glasses cleaning fluid and a preparation method thereof. Background Art

[0002] Eyeglass cleaning fluid is an essential product for daily maintenance of optical lenses. Its core functions include decontamination, anti-fogging, antibacterial properties, and protecting lens coatings. Traditional cleaning fluids are primarily based on alcohols (such as ethanol and isopropyl alcohol) or surfactants (such as sodium lauryl sulfate), which clean by dissolving grease and dust. However, these formulations have the following technical drawbacks:

[0003] While high-concentration alcohol (>15%) evaporates quickly, it can easily cause dehydration and cracking of lens coatings. Surfactant-based cleaning solutions, if not rinsed thoroughly, can leave a white filmy residue on the lens surface. Existing anti-fog ingredients (such as glycerin and polyvinylpyrrolidone) only last for 4-6 hours and quickly lose effectiveness in environments with humidity >80%. Commercially available fragrance cleaning solutions often directly incorporate free fragrance, resulting in: overpowering top notes, with the fragrance releasing over 60% of the total in the first 30 minutes, irritating the user's sense of smell; and esterification reactions between fragrance and alcohol, resulting in precipitation.

[0004] To overcome the above problems, the industry has proposed some improvement plans, but they all have significant limitations:

[0005] Antibacterial and anti-fog compound formula: Existing technology uses a quaternary ammonium salt (such as benzalkonium chloride) compounded with nanosilver, achieving an antibacterial rate of over 99%. However, this solution has drawbacks: the nanosilver reacts with the sulfur in the lens coating, causing localized dark spots; and it fails to address the problem of rapid fragrance evaporation.

[0006] Slow-release fragrance technology: Existing technology extends the duration of fragrance to 4 hours by adsorbing the fragrance onto a porous silica carrier. Disadvantage: The carrier disintegrates in an acidic environment (pH < 4), resulting in an uncontrolled release rate.

[0007] Environmentally friendly cleaning system: Existing technologies use bio-based solvents (such as limonene) instead of alcohol to reduce irritation. Disadvantages: Limonene has a swelling rate of up to 3.2% on plastic lenses and is incompatible with anti-fog functional ingredients. Summary of the Invention

[0008] The present invention provides a scented glasses cleaning solution and a preparation method thereof. The fragrance is encapsulated in β-cyclodextrin / chitosan composite microspheres to achieve humidity-triggered sustained release. Glycerol and polyether-modified silicone oil are used to form a nanoscale directional arrangement film on the mirror surface, effectively extending the anti-fog time. This improves the problem that existing glasses cleaning solutions cannot simultaneously achieve continuous scent release and long-lasting anti-fog functions.

[0009] A scented glasses cleaning solution comprising the following components in parts by weight:

[0010] 0.8-2 parts of fragrance microcapsules, 0.3-1 parts of polyether modified silicone oil, 0.05-0.1 parts of modified nano-silica, 1.5-3 parts of glycerol, 0.5-2 parts of composite antibacterial agent, 0.3-0.5 parts of disodium edetate, 8-12 parts of alcohols, and 78-88 parts of deionized water;

[0011] The fragrance microcapsules are prepared by encapsulating fragrance in β-cyclodextrin-chitosan composite microspheres, the composite antibacterial agent comprises benzalkonium chloride and polyhexamethylene biguanide in a weight ratio of 2.5 to 3.5:1, and the pH of the cleaning solution is 6 to 8.

[0012] The present invention uses β-cyclodextrin-chitosan composite microspheres to encapsulate fragrance, achieving dual controlled release: β-cyclodextrin includes fragrance molecules through hydrophobic cavities (embedding rate ≥92%); the chitosan shell swells and releases when the humidity is greater than 60%, extending the fragrance to 10 hours; in addition, microencapsulation reduces the risk of direct contact of the fragrance with the eyes. Glycerol forms a hydrogen bond network to absorb water molecules, and polyether-modified silicone oil spreads on the mirror surface to form a nanofilm. The synergistic effect of glycerol and polyether-modified silicone oil increases the anti-fog time of the lens to 72 hours. Modified nano-silica absorbs grease while avoiding scratching the lens, and synergistically reduces surface tension with polyether-modified silicone oil, reducing the number of wiping times. Benzalkonium chloride in the composite antibacterial agent destroys cell membranes, and polyhexamethylene biguanide interferes with DNA replication. The sterilization rate is greater than 99%, and the coating corrosion rate is less than 0.1%.

[0013] Modified nano-silica enhances decontamination capabilities, polyether-modified silicone oil reduces static dust absorption on lenses, and glycerin aids moisturization and prevents dry lines, comprehensively improving lens cleanliness and clarity. Disodium EDTA reduces metal ion corrosion on lenses, and a composite antimicrobial agent inhibits microbial growth.

[0014] Furthermore, the preparation method of the fragrance microcapsules comprises the following steps:

[0015] Step 1: dissolving β-cyclodextrin in deionized water at 55-65° C., adding the pretreated flavor, and ultrasonically treating at 40 kHz for 18-22 minutes; spray drying to obtain primary microcapsules with a particle size of 5-10 μm;

[0016] Step 2: dissolving chitosan in 1% acetic acid aqueous solution and stirring until transparent; dispersing primary microcapsules in the chitosan-acetic acid solution, adjusting the pH to 4.9-5.1, adding genipin for cross-linking, and reacting at 42-46° C. for 1.5-2.5 hours; washing with deionized water by centrifugation 2-3 times, and freeze-drying to obtain the scented microcapsules.

[0017] Hot water at 55-65°C increases the openness of the β-cyclodextrin cavity and its volume. Ultrasonic treatment at 40kHz forces the fragrance molecules into the cavity, increasing the entrapment efficiency from the traditional 60-70% to 92%. At a pH of 4.9-5.1, genipin reacts with the amino groups of chitosan to form a blue network structure, forming a chitosan-genipin cross-linked shell. This results in a 24-hour release rate of less than 50% in 10% ethanol, significantly superior to the 90% release rate of traditional single-layer β-cyclodextrin microcapsules in 10% ethanol. The cross-linked shell, with a thickness of 100±2nm, blocks contact between the fragrance and the antimicrobial agent, preventing the free fragrance from reacting with benzalkonium chloride to form quaternary ammonium salts and chlorinated aromatic hydrocarbons.

[0018] Furthermore, in step 1, the mass ratio of the β-cyclodextrin to the essence is 3.5-5:1, and the mass ratio of the β-cyclodextrin to deionized water is 1:8-10.

[0019] Furthermore, in step 2, the mass ratio of primary microcapsules to chitosan aqueous solution is 1:1.8-2.3; the mass ratio of chitosan to 1% acetic acid aqueous solution in the chitosan aqueous solution is 1:46-50; and the mass ratio of genipin to chitosan is 1:15-20.

[0020] Furthermore, the essence includes ambergris, geranyl acetate and PEG-40 hydrogenated castor oil in parts by weight; the mass ratio of ambergris, geranyl acetate and PEG-40 hydrogenated castor oil is 1.5-2.0:1:1.

[0021] Furthermore, the pretreatment method of the essence comprises the following steps: The molecular sieves are mixed in a weight ratio of 1:0.4-0.6 and allowed to stand at 25°C in the dark for 20-24 hours to remove moisture; the dehydrated ambergris is mixed with hydroxypropyl-β-cyclodextrin in a molar ratio of 1:1.8-2.1 and stirred at 40°C for 1.5-2.5 hours to form an inclusion complex precursor; geranyl acetate is mixed with PEG-40 hydrogenated castor oil and ultrasonically treated for 10 minutes.

[0022] When ambergris is directly added to a water-based system, it tends to float and aggregate, and is easily oxidized under light to produce irritating aldehydes. The molecular sieve is deeply dehydrated, and the moisture content is reduced from 0.8% to ≤0.1%, avoiding hydrolysis side reactions; pre-inclusion: the cavity volume of hydroxypropyl-β-cyclodextrin with a hydroxypropyl substitution degree of 0.6 is 18% larger than that of β-cyclodextrin. After inclusion, the solubility of ambergris is increased from 0.01g / L to 2.3g / L.

[0023] Geranyl acetate has poor compatibility with alcoholic solvents, and its direct addition can cause turbidity in the cleaning solution. PEG-40 hydrogenated castor oil nanoemulsification forms an emulsion with a particle size of 80 ± 10 nm and an interfacial membrane zeta potential of -35 mV, which prevents aggregation through electrostatic repulsion.

[0024] The ketone group of ambergris is encapsulated by the cyclodextrin cavity, reducing the reaction rate to less than 0.5%. The ester bond of geranyl acetate is entangled with PEG chains, reducing the hydrolysis rate by 80%, and increasing the half-life from 7 days to 35 days at pH 8. Furthermore, after pretreatment, the fragrance's eye irritation is significantly reduced. Ambergris (woody) is slowly released, releasing 70% in 8 hours; geranyl acetate (fruity) is rapidly released, releasing 30% in 2 hours. The two blend in a gradient, creating a distinct fragrance with a front, middle, and back notes.

[0025] Furthermore, the polyether-modified silicone oil includes polydimethylsiloxane-polyoxyethylene copolymer or polydimethylsiloxane-polyoxypropylene copolymer, with a polymerization degree m=20-50, n=5-15, m being the polymerization degree of the siloxane main chain, and n being the polymerization degree of the polyoxyethylene or polyoxypropylene side chain.

[0026] The siloxane backbone provides high-temperature resistance and flexibility, but pure silicone oils are prone to migration or volatilization at high temperatures. The introduction of side chains enhances intermolecular interactions, reduces high-temperature migration, and maintains the low-temperature flexibility of siloxane. While traditional silicone oils can reduce surface tension, they struggle to simultaneously achieve multiple functions such as wetting, emulsification, and foam stabilization. Polyether side chains: By adjusting the ratio and chain length of side chains, the hydrophilic-hydrophobic balance of the molecules can be precisely controlled, achieving dynamic surface activity, reducing interfacial tension, and stabilizing emulsions.

[0027] The main chain polymerization degree m = 20-50, ensuring the flexibility of the siloxane backbone and avoiding excessive viscosity caused by too high a polymerization degree. The side chain n = 5-15, with a moderate side chain length. Too long (>15) may reduce surface activity, while too short (<5) may result in insufficient hydrophilicity.

[0028] Furthermore, the alcohol includes one of isopropanol and ethanol.

[0029] Furthermore, the modified nano-silica is polyethylene glycol grafted nano-silica with a particle size of 10 to 30 nm, a polyethylene glycol grafting rate of 15 to 25%, and a polyethylene glycol molecular weight of 4,000 to 6,000.

[0030] Unmodified nano-SiO2 easily agglomerates in alcohol-containing cleaning solutions, and the particle size increases from 20nm to 500nm, resulting in turbidity of the liquid.

[0031] When PEG grafting reaches 15-25%, the long PEG chains create steric hindrance, raising the zeta potential from -20mV to -5mV. This weakens electrostatic repulsion but strengthens steric hindrance, allowing the PEG-grafted nano-silica to remain sediment-free in 10% ethanol for 30 days. Unmodified SiO2 adsorbs fragrance molecules, such as ambergris, at an adsorption rate exceeding 20%, leading to rapid fragrance decay. The grafted layer of the present invention covers the SiO2 surface with silanol groups, significantly reducing fragrance adsorption. The PEG chains swell at humidity levels exceeding 60%, assisting in the controlled release of the fragrance microcapsules.

[0032] A preparation method for preparing a scented glasses cleaning solution comprises the following steps:

[0033] S100, heat deionized water to 48-52° C., add disodium EDTA and the composite antibacterial agent in sequence, and stir until dissolved;

[0034] In step S200, the solution in step S100 is cooled to 25-32°C, alcohol and glycerin are added, polyether-modified silicone oil is added dropwise in a dark environment, and the mixture is stirred evenly;

[0035] S300, adding nano-silica and fragrance microcapsules to step S200, and dispersing them under stirring at 7500-8500 rpm for 4-6 minutes;

[0036] S400, filtering the solution in step S300 through a 0.4-0.5 μm filter membrane, and storing it in a sealed container under an inert gas condition.

[0037] Alcohol and glycerin are added at low temperature to avoid volatilization, and the process is highly controllable. Staged temperature control (heating first, then cooling) and high-speed dispersion ensure that all ingredients are evenly dissolved / dispersed. Membrane filtration removes impurities, making it suitable for large-scale production.

[0038] Genipin: (1S,2R,6S)-2-hydroxy-9-(hydroxymethyl)-3-oxodicyclopropyl[4.3.0]nona-4,8-diene-5-carboxylic acid methyl ester;

[0039] PEG: polyethylene glycol;

[0040] Glycerol: 1,2,3-propanetriol;

[0041] PEG-40 hydrogenated castor oil: CAS: 61791-12-6.

[0042] Advantageous Effects of the Invention

[0043] The invention uses microcapsule sustained release and pH control to reduce eye irritation caused by the cleaning solution, and the fragrance lasts for 8-10 hours. The synergistic effect of glycerin and polyether-modified silicone oil increases the anti-fog time of lenses to 72 hours, with an antibacterial rate of 99.9% in 5 minutes and a coating wear rate of less than 0.1% after 100 cycles. The invention can be used to clean glasses and precision optical instruments, prevent fogging in medical goggles, and prevent fogging in automotive glass. DETAILED DESCRIPTION

[0044] Example 1

[0045] Pretreatment of flavor:

[0046] 250g of ambergris The molecular sieves were mixed evenly and allowed to stand at 25°C in the dark for 22 hours; 180g of dehydrated ambergris was mixed with 1980g of hydroxypropyl-β-cyclodextrin and stirred at 40°C for 2 hours to prepare an inclusion compound precursor; 100g of geranyl acetate was mixed with 100g of PEG-40 hydrogenated castor oil and ultrasonicated at 200W for 10 minutes to prepare an emulsion.

[0047] Example 2

[0048] Pretreatment of flavor:

[0049] 250g of ambergris The molecular sieves were mixed evenly and allowed to stand at 25°C in the dark for 20 h; 150 g of dehydrated ambergris was mixed with 1605 g of hydroxypropyl-β-cyclodextrin and stirred at 40°C for 1.5 h to prepare an inclusion compound precursor; 100 g of geranyl acetate was mixed with 100 g of PEG-40 hydrogenated castor oil and ultrasonicated at 180 W for 10 min to prepare an emulsion.

[0050] Example 3

[0051] Pretreatment of flavor:

[0052] 250g of ambergris The molecular sieves were mixed evenly and allowed to stand at 25°C in the dark for 24 hours; 200 g of dehydrated ambergris was mixed with 2500 g of hydroxypropyl-β-cyclodextrin and stirred at 40°C for 2.5 hours to prepare an inclusion compound precursor; 100 g of geranyl acetate was mixed with 100 g of PEG-40 hydrogenated castor oil and ultrasonicated at 220W for 10 minutes to prepare an emulsion.

[0053] The essence was pretreated using the method of Examples 1-3, and the properties of the obtained pretreated product are shown in Table 1.

[0054] Table 1 Properties of the pretreated products obtained by pretreating the essence using the methods of Examples 1-3

[0055] Evaluation indicators Example 1 Example 2 Example 3 Inclusion rate (%) 92 86 95 Fragrance retention rate (%) 88 82 93 Fragrance loading efficiency (%) 85 78 90

[0056] Note: Flavor loading efficiency = (mass of embedded flavor / total mass of feed flavor) x 100%

[0057] As shown in Table 1, in Examples 1-3, the inclusion rate of the hydroxypropyl-β-cyclodextrin mixture for anhydroambergrin is 86-95%, the flavor retention rate is 82-93, and the flavor loading efficiency is 78-90. Example 3 is the best example.

[0058] Example 4

[0059] Step 1. Preparation of primary microcapsules: Heat 7.2 kg of deionized water to 60°C, add 800 g of β-cyclodextrin, and stir to dissolve. Add 200 g of the pretreated flavor prepared using the method of Example 3, and ultrasonicate at 40 kHz for 20 minutes to promote inclusion. Spray dry at an inlet air temperature of 180°C and an outlet air temperature of 80°C to obtain primary microcapsules.

[0060] Step 2: Dissolve 1000g of chitosan in 48kg of 1% acetic acid aqueous solution and stir until transparent. Disperse 500g of primary microcapsules in the chitosan-acetic acid solution, adjust the pH to 5, add 56g of genipin for cross-linking, and react at 45°C for 2 hours. Wash three times with deionized water by centrifugation. Freeze-dry at -45°C for 3 hours, -25°C at 30 Pa for 28 hours, and 25°C at 15 Pa for 8 hours to produce the fragrance microcapsules.

[0061] Example 5

[0062] Step 1. Preparation of primary microcapsules: Heat 5.6 kg of deionized water to 60°C, add 700 g of β-cyclodextrin, and stir to dissolve. Add 200 g of the pretreated flavor prepared using the method of Example 3, and ultrasonicate at 40 kHz for 18 minutes to promote inclusion. Spray dry at an inlet air temperature of 180°C and an outlet air temperature of 80°C to obtain primary microcapsules.

[0063] Step 2: Dissolve 900g of chitosan in 41.4kg of 1% acetic acid aqueous solution and stir until transparent. Disperse 500g of primary microcapsules in the chitosan-acetic acid solution, adjust the pH to 4.9, add 60g of genipin for cross-linking, and react at 42°C for 2.5 hours. Wash twice with deionized water by centrifugation. Freeze-dry at -50°C for 2.5 hours, -20°C, 20 Pa (Pa) for 24 hours, and 30°C, 10 Pa (Pa) for 6 hours to produce the fragrance microcapsules.

[0064] Example 6

[0065] Step 1. Preparation of primary microcapsules: Heat 10 kg of deionized water to 60°C, add 1000 g of β-cyclodextrin, and stir to dissolve. Add 200 g of the pretreated flavor prepared using the method of Example 3, and ultrasonicate at 40 kHz for 22 minutes to promote inclusion. Spray dry at an inlet air temperature of 180°C and an outlet air temperature of 80°C to obtain primary microcapsules.

[0066] Step 2: Dissolve 1150g of chitosan in 57.5kg of 1% acetic acid aqueous solution and stir until transparent. Disperse 500g of primary microcapsules in the chitosan-acetic acid solution, adjust the pH to 5.1, add 57.5g of genipin for cross-linking, and react at 46°C for 1.5 hours. Wash three times with deionized water by centrifugation. Freeze-dry at -40°C for 4 hours, -30°C, 40 Pa, for 36 hours, and 28°C, 20 Pa, for 10 hours to produce the fragrance microcapsules.

[0067] The performance parameters of the fragrance microcapsules prepared using Examples 4-6 are shown in Table 2.

[0068] Table 2 Performance parameters of the fragrance microcapsules prepared in Examples 4-6

[0069] Performance parameters Example 4 Example 5 Example 6 Fragrance duration 10h 8h 9h Microcapsule loading rate 15.8％ 14.3％ 16.1％ Heat resistance Excellent good Excellent

[0070] Note: Microcapsule loading rate = (mass of fragrance in microcapsules / total mass of microcapsules containing fragrance) x 100%.

[0071] As shown in Table 2, the fragrance of the fragrance microcapsules can last up to 10 hours, the loading rate of the microcapsules can reach 16.1%, and the heat resistance is excellent.

[0072] Example 4 is the best example.

[0073] Example 7

[0074] A scented glasses cleaning solution comprising the following components in parts by weight:

[0075] 100 g of fragrance microcapsules, 80 g of dimethylsiloxane-polyoxyethylene copolymer (m=30, n=10), 7 g of polyethylene glycol-grafted nano-silica (particle size 20 nm, polyethylene glycol grafting rate 20%, polyethylene glycol molecular weight 5000), 200 g of glycerol, 75 g of benzalkonium chloride, 25 g of polyhexamethylene biguanide, 40 g of disodium edetate, 1 kg of isopropyl alcohol, and 8 kg of deionized water;

[0076] A preparation method for preparing a scented glasses cleaning solution comprises the following steps:

[0077] S100, heating deionized water to 50° C., adding disodium edetate, benzalkonium chloride, and polyhexamethylene biguanide in sequence, and stirring until dissolved;

[0078] S200: Cool the solution in step S100 to 30° C., add isopropyl alcohol and glycerol, and dropwise add dimethylsiloxane-polyoxyethylene copolymer under light-proof conditions, and stir evenly;

[0079] S300, adding polyethylene glycol-grafted nano-silica and the fragrance microcapsules prepared by the method of Example 4 to step S200, and dispersing them under stirring at 8000 rpm for 5 minutes;

[0080] S400, filtering the solution in step S300 through a 0.45 μm filter membrane, and storing it in a sealed container under nitrogen.

[0081] Example 8

[0082] A scented glasses cleaning solution comprising the following components in parts by weight:

[0083] 80 g of fragrance microcapsules, 30 g of polydimethylsiloxane-polyoxypropylene copolymer (m=20, n=5), 5 g of polyethylene glycol-grafted nanosilica (particle size: 10 nm, polyethylene glycol grafting rate: 15%, polyethylene glycol molecular weight: 4000), 150 g of glycerol, 36 g of benzalkonium chloride, 14 g of polyhexamethylene biguanide, 30 g of disodium edetate, 80 g of isopropyl alcohol, and 7.8 kg of deionized water;

[0084] A preparation method for preparing a scented glasses cleaning solution comprises the following steps:

[0085] S100, heating deionized water to 48° C., adding disodium edetate, benzalkonium chloride, and polyhexamethylene biguanide in sequence, and stirring until dissolved;

[0086] In step S200, the solution in step S100 is cooled to 25° C., alcohol and glycerol are added, and polydimethylsiloxane-polyoxypropylene copolymer is added dropwise under light-proof conditions and stirred evenly;

[0087] S300, adding polyethylene glycol-grafted nano-silica and the fragrance microcapsules prepared by the method of Example 4 to step S200, and dispersing them under stirring at 7500 rpm for 4 minutes;

[0088] S400, the solution in step S300 is filtered through a 0.4 μm filter membrane, sealed and stored under argon conditions.

[0089] Example 9

[0090] A scented glasses cleaning solution comprising the following components in parts by weight:

[0091] 200 g of fragrance microcapsules, 100 g of polydimethylsiloxane-polyoxyethylene copolymer (m=50, n=15), 10 g of polyethylene glycol-grafted nano-silica (particle size: 30 nm, polyethylene glycol grafting rate: 25%, polyethylene glycol molecular weight: 6000), 300 g of glycerol, 156 g of benzalkonium chloride, 44 g of polyhexamethylene biguanide, 50 g of disodium edetate, 1.2 kg of ethanol, and 88 kg of deionized water;

[0092] A preparation method for preparing a scented glasses cleaning solution comprises the following steps:

[0093] S100, heating deionized water to 52° C., adding disodium edetate, benzalkonium chloride, and polyhexamethylene biguanide in sequence, and stirring until dissolved;

[0094] S200: Cool the solution in step S100 to 32° C., add ethanol and glycerol, and dropwise add polydimethylsiloxane-polyoxyethylene copolymer under light-proof conditions, and stir evenly;

[0095] S300, adding polyethylene glycol-grafted nano-silica and the fragrance microcapsules prepared by the method of Example 4 to step S200, and dispersing them under stirring at 8500 rpm for 6 minutes;

[0096] S400, filtering the solution in step S300 through a 0.5 μm filter membrane, and storing it in a sealed container under nitrogen.

[0097] Comparative Example 1

[0098] The fragrance microcapsules were removed and the same mass of free fragrance was directly added instead. In Example 4, the microcapsule loading rate was 15.8%, that is, 15.8 g of free fragrance was added. Other components and parameters were the same as in Example 7.

[0099] A preparation method for preparing a scented glasses cleaning solution comprises the following steps:

[0100] S100, heating deionized water to 50° C., adding disodium edetate, benzalkonium chloride, and polyhexamethylene biguanide in sequence, and stirring until dissolved;

[0101] In step S200, the solution in step S100 is cooled to 30°C, flavor, isopropyl alcohol and glycerin are added, and dimethylsiloxane-polyoxyethylene copolymer is added dropwise under light-proof conditions and stirred evenly;

[0102] S300, adding polyethylene glycol-grafted nano-silica to step S200 and dispersing under stirring at 8000 rpm for 5 minutes;

[0103] S400, filtering the solution in step S300 through a 0.45 μm filter membrane, and storing it in a sealed container under nitrogen.

[0104] Comparative Example 2

[0105] The polydimethylsiloxane-polyoxyethylene copolymer was replaced by nano-silica (particle size 20 nm), and the dimethylsiloxane-polyoxyethylene copolymer was replaced by ordinary silicone oil. The other components, parameters and preparation method were the same as those in Example 7.

[0106] Comparative Example 3

[0107] The antibacterial agent is a single antibacterial agent, retaining only 100 g of benzalkonium chloride, and the other components, parameters and preparation method are the same as those in Example 7.

[0108] The performance parameters of the scented eyeglass cleaning solutions prepared using Examples 7-9 and Comparative Examples 1-3 are shown in Table 3.

[0109] Table 3 Performance parameters of scented eyeglass cleaning solutions prepared using Examples 7-9 and Comparative Examples 1-3

[0110]

[0111] As shown in Table 3, Examples 7-9 produced scented eyeglass cleaning solutions that released fragrance for 10 hours, had an antibacterial rate of 99.9%, maintained an antifogging effect for 67-72 hours, a decontamination efficiency greater than 93%, a 100% clean coating wear rate less than 0.1%, and exhibited no delamination in Examples 7 and 9, retaining over 90% of the fragrance after 30 days of storage under inert gas sealing. Comparative Example 1, which used free fragrance directly, released fragrance more quickly but only lasted for 3 hours, significantly lower than the present invention. Comparative Example 2, which lacked the synergistic film-forming properties of the polyethylene glycol hydrophilic segments and silicone oil, exhibited a poor antifogging effect, lasting only 9 hours. Comparative Example 3, which used a single antibacterial agent, was only effective against Gram-positive bacteria, with weaker killing ability against other bacterial species, resulting in an antibacterial rate of only 68.3%, significantly lower than the present invention. The scented glasses cleaning solution prepared by the formula and preparation process of the present invention can achieve a lasting release of fragrance for 10 hours and simultaneously ensure a long-term anti-fogging time of 72 hours.

Claims

1. A scented glasses cleaning solution, characterized in that: Calculated by weight, it includes the following components: 0.8-2 parts of fragrance microcapsules, 0.3-1 parts of polyether modified silicone oil, 0.05-0.1 parts of modified nano-silica, 1.5-3 parts of glycerol, 0.5-2 parts of composite antibacterial agent, 0.3-0.5 parts of disodium edetate, 8-12 parts of alcohols, and 78-88 parts of deionized water; The fragrance microcapsules are prepared by encapsulating fragrance in β-cyclodextrin-chitosan composite microspheres, the composite antibacterial agent comprises benzalkonium chloride and polyhexamethylene biguanide in a weight ratio of 2.5 to 3.5:1, and the pH of the cleaning solution is 6 to 8.

2. The scented glasses cleaning solution according to claim 2, characterized in that The preparation method of the fragrance microcapsule comprises the following steps: Step 1: dissolving β-cyclodextrin in deionized water at 55-65° C., adding the pretreated flavor, and ultrasonically treating at 40 kHz for 18-22 minutes; spray drying to obtain primary microcapsules with a particle size of 5-10 μm; Step 2: dissolving chitosan in 1% acetic acid aqueous solution and stirring until transparent; dispersing primary microcapsules in the chitosan-acetic acid solution, adjusting the pH to 4.9-5.1, adding genipin for cross-linking, and reacting at 42-46° C. for 1.5-2.5 hours; washing with deionized water by centrifugation 2-3 times, and freeze-drying to obtain the scented microcapsules.

3. The scented glasses cleaning solution according to claim 2, characterized in that In step 1, the mass ratio of the β-cyclodextrin to the essence is 3.5-5:1, and the mass ratio of the β-cyclodextrin to deionized water is 1:8-10.

4. The scented glasses cleaning solution according to claim 2, characterized in that In step 2, the mass ratio of primary microcapsules to chitosan aqueous solution is 1:1.8-2.3; the mass ratio of chitosan to 1% acetic acid aqueous solution in the chitosan aqueous solution is 1:46-50; and the mass ratio of genipin to chitosan is 1:15-20.

5. The scented glasses cleaning solution according to claim 2, characterized in that In parts by weight, the essence includes ambergris, geranyl acetate and PEG-40 hydrogenated castor oil; the mass ratio of ambergris, geranyl acetate and PEG-40 hydrogenated castor oil is 1.5-2.0:1:

1.

6. The scented glasses cleaning solution according to claim 5, characterized in that The pretreatment method of the essence comprises the following contents: Combine ambergris with 3 The molecular sieves are mixed in a weight ratio of 1:0.4-0.6 and allowed to stand at 25°C in the dark for 20-24 hours to remove moisture; the dehydrated ambergris is mixed with hydroxypropyl-β-cyclodextrin in a molar ratio of 1:1.8-2.1 and stirred at 40°C for 1.5-2.5 hours to form an inclusion compound precursor; geranyl acetate is mixed with PEG-40 hydrogenated castor oil and ultrasonically treated for 10 minutes to obtain an emulsion.

7. The scented glasses cleaning solution according to claim 1, characterized in that The polyether modified silicone oil includes polydimethylsiloxane-polyoxyethylene copolymer or polydimethylsiloxane-polyoxypropylene copolymer, with a polymerization degree m=20-50 and n=5-15, where m is the polymerization degree of the siloxane main chain and n is the polymerization degree of the polyoxyethylene or polyoxypropylene side chain.

8. The scented glasses cleaning solution according to claim 1, characterized in that The alcohol includes one of isopropyl alcohol and ethanol.

9. The scented glasses cleaning solution according to claim 1, characterized in that The modified nano-silica is polyethylene glycol grafted nano-silica with a particle size of 10 to 30 nm, a polyethylene glycol grafting rate of 15 to 25%, and a polyethylene glycol molecular weight of 4,000 to 6,000.

10. A preparation method, characterized in that: The method for preparing the scented lens cleaning solution according to any one of claims 1 to 9 comprises the following steps: S100, heat deionized water to 48-52° C., add disodium EDTA and the composite antibacterial agent in sequence, and stir until dissolved; In step S200, the solution in step S100 is cooled to 25-32°C, alcohol and glycerin are added, polyether-modified silicone oil is added dropwise in a dark environment, and the mixture is stirred evenly; S300, adding modified nano-silica and fragrance microcapsules to step S200, and dispersing them under stirring at 7500-8500 rpm for 4-6 minutes; S400, filtering the solution in step S300 through a 0.4-0.5 μm filter membrane, and storing it in a sealed container under an inert gas condition.

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