Insect repellent aerosol and its preparation method and use

Abstract

The present invention discloses an insect repellent aerosol, its preparation method, and use. The insect repellent aerosol comprises the following components, by weight: 0.2-2 parts of a composite deodorant, 2-5 parts of menthyl glycol, 0.01-0.1 parts of polyvinyl pyrrolidone, 0.1-0.5 parts of an antistatic agent, 0.2-2 parts of a solubilizer, 3-20 parts of a cosolvent, 30-70 parts of a propellant, and 10-65 parts of water; the antistatic agent is a quaternary ammonium salt of polydimethylsiloxane; the composite deodorant is a mixture of a sedge extract and a eucalyptus leaf extract; and the purity of the menthyl glycol is ≥99%. The insect repellent aerosol has excellent insect repellency and mosquito bite prevention effects.

Description

Technical Field

[0001] The present invention belongs to the technical field of drug-derived insecticides, and more particularly, relates to an insecticide aerosol and a preparation method and application thereof. Background Art

[0002] As carriers of human relationships and emotions, pets are increasingly influential in human social activities with economic development, and the number of pet owners is increasing. However, pets, originating from nature and domesticated by humans, also require outdoor activities, especially dogs, who typically require one to two sessions of outdoor time daily. Outdoor activities inevitably expose pets to biting pests such as mosquitoes, fleas, ticks, and midges. These bites can not only cause abnormal behavior in pets, but can also spread disease and even bring pests home, impacting the physical and mental health of pet owners.

[0003] Pet insect repellents are classified as veterinary drugs, primarily pet collars and drops containing chemical pesticides. Their primary mechanism of action is that the chemicals are absorbed through the skin and diffuse throughout the body. After the insect bites or feeds on its blood, trace amounts of the chemical pesticides kill the insects. While these products are long-lasting and effective, the chemical pesticides still remain in the body, posing a health risk to pets. Furthermore, insects don't bite immediately after invading their fur, creating the risk of pets carrying them home.

[0004] Furthermore, plant-based pet insect repellent sprays cannot penetrate fur and are easily wiped off during running and playing, making them less effective. Furthermore, the formulation often contains alcohol, making them less pet-friendly. Furthermore, current pet repellent product development primarily targets insect bites or landing behaviors. However, for example, the bite of an animal, such as a mosquito, is a complex process. The first step is tracking, based on the animal's breath carbon dioxide or body odor. The second step is landing, typically in a secluded area after tracking the animal. The third step is biting, which occurs in moist areas.

[0005] Therefore, relying solely on one or two nodes for protection is undoubtedly relatively lagging or inefficient. How to provide an excellent product that can repel pests and prevent mosquito bites has become a technical problem that needs to be solved urgently. Summary of the Invention

[0006] In view of the above-mentioned existing technical problems, the primary purpose of the present invention is to provide an insect repellent aerosol.

[0007] The second object of the present invention is to provide a method for preparing an insect repellent aerosol.

[0008] The third object of the present invention is to provide an application of an insect repellent aerosol in repelling insects and / or preventing insect bites.

[0009] A fourth object of the present invention is to provide an insect repellent aerosol for use in outdoor insect repellent and / or insect bite prevention for pets.

[0010] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0011] An insect repellent aerosol comprises the following components, measured by weight: 0.2-2 parts of a composite deodorant, 2-5 parts of menthyl glycol, 0.01-0.1 parts of polyvinyl pyrrolidone, 0.1-0.5 parts of an antistatic agent, 0.2-2 parts of a solubilizer, 3-20 parts of a cosolvent, 30-70 parts of a propellant, and 10-65 parts of water; the antistatic agent is a quaternary ammonium salt of polydimethylsiloxane; the composite deodorant is a mixture of a gypsophila serrata extract and a eucalyptus leaf extract; and the purity of the menthyl glycol is ≥99%.

[0012] The present invention uses a specific combination of a composite deodorant, menthyl glycol of a specific purity, polyvinyl pyrrolidone, and polydimethylsiloxane quaternary ammonium salt, and other components in the system to achieve excellent insect repellent and mosquito bite prevention effects. Specifically:

[0013] The present invention utilizes a mixture of sedge extract and eucalyptus leaf extract as a composite deodorant. The combination of the two exhibits excellent synergistic effects. Compared to existing deodorants (such as tea polyphenols), the composite deodorant employed in the present invention is more effective in reducing characteristic pet odors, effectively reducing the identification and tracking of biting pests such as mosquitoes. Furthermore, the composite deodorant used in the present invention utilizes a significantly lower dosage than mosquito repellents intended for human use, providing effective protection and a high cost-effectiveness.

[0014] Furthermore, existing insect repellent products containing alcohol are generally irritating to pets and are not very pet-friendly, while the present invention uses water as a solvent with excellent affinity. However, in an aqueous system, conventional menthyl glycol has a low solubility, which leads to stratification. Through research, the inventors found that the solubility of menthyl glycol with a purity of ≥99% in an aqueous system can be greatly improved, thereby reducing the use of solubilizers and making it possible to be alcohol-free. The use of menthyl glycol with a purity of ≥99% is extremely significantly better in repelling insects and preventing mosquito bites than menthyl glycol with a slightly lower purity (94%).

[0015] Furthermore, the present invention uses polyvinyl pyrrolidone, which has film-forming, bonding, solubilizing or coagulating effects, and can slow down the volatilization of drugs, especially when sprayed on animal fur, which can reduce the risk of drugs being wiped off by pets playing, thereby increasing the product's lasting protection time.

[0016] Furthermore, the use of a cosolvent can cause the problem of pet hair sticking together, thereby affecting the insect repellent and insect prevention effects. Through research, the inventors found that the use of polydimethylsiloxane quaternary ammonium salt as an antistatic agent can effectively solve the problem of hair sticking, allowing the product components to penetrate deep into the pet's hair, thereby achieving excellent insect repellent and insect bite prevention effects.

[0017] The aerosol combination provided by the present invention utilizes a specific combination of a composite deodorant, menthyl glycol of a specific purity, polyvinylpyrrolidone, and a polydimethylsiloxane quaternary ammonium salt. It offers advantages such as simple application, deep penetration into pet hair, high safety, significant insect repellent effectiveness, and low cost, making it suitable for outdoor pet insect repellent. The aerosol formulation avoids the difficulty of sprays in penetrating hair, preventing excessive spraying from wetting the pet's hair and making application and penetration difficult. The aerosol exhibits good uniformity and penetrability, offering the advantages of simple application and strong penetrating power.

[0018] More specifically, the dosage of the composite deodorant can be 0.3 parts, 0.4 parts, 0.5 parts, 0.6 parts, 0.7 parts, 0.8 parts, 0.9 parts, 1.0 parts, 1.1 parts, 1.2 parts, 1.3 parts, 1.4 parts, 1.5 parts, 1.6 parts, 1.7 parts, 1.8 parts, 1.9 parts, etc., or an interval range formed by any of the above values, such as 0.5-1.0 parts, 0.2-0.5 parts, 0.2-1.0 parts, 0.5-2 parts, etc., but the present invention is not limited thereto.

[0019] More specifically, the dosage of menthylene glycol can be 1.5 parts, 2 parts, 2.5 parts, 3 parts, 3.5 parts, 4 parts, 4.5 parts, etc., or an interval range formed by any of the above values, such as 1-2 parts, 1-5 parts, 2-5 parts, 3-4.5 parts, etc., but the present invention is not limited thereto.

[0020] More specifically, the amount of polyvinyl pyrrolidone used can be 0.02 parts, 0.03 parts, 0.04 parts, 0.05 parts, 0.06 parts, 0.07 parts, 0.08 parts, 0.09 parts, etc., or an interval range formed by any of the above values, such as 0.01-0.05 parts, 0.01-0.08 parts, 0.02-0.05 parts, 0.03-0.09 parts, etc., but the present invention is not limited thereto.

[0021] More specifically, the amount of the solubilizer used can be 0.2 parts, 0.4 parts, 0.6 parts, 0.8 parts, 1 part, 1.2 parts, 1.4 parts, 1.6 parts, 1.8 parts, etc., or an interval range formed by any of the above values, such as 0.2-1 parts, 0.2-2 parts, 1-2 parts, etc., but the present invention is not limited thereto.

[0022] More specifically, the amount of the co-solvent used can be 4 parts, 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, 10 parts, 11 parts, 12 parts, 13 parts, 14 parts, 15 parts, 16 parts, 17 parts, 18 parts, 19 parts, etc., or an interval range formed by any of the above values, such as 4-8 parts, 4-20 parts, 4-10 parts, 10-20 parts, etc., but the present invention is not limited thereto.

[0023] More specifically, the amount of water used can be 15 parts, 20 parts, 25 parts, 30 parts, 35 parts, 40 parts, 45 parts, 50 parts, 55 parts, 60 parts, etc., or an interval range formed by any of the above values, such as 30-60 parts, 33-60 parts, 40-50 parts, 46-59 parts, etc., but the present invention is not limited thereto.

[0024] More specifically, the purity of the menthyl glycol is 99-99.9999%. The purity of the menthyl glycol can be 99.1%, 99.2%, 99.3%, 99.4%, 99.5%, 99.6%, 99.7%, 99.8%, 99.9%, 99.99%, 99.999%, or the like, or any range formed by the above values, such as 99.1-99.8%, 99.2-99.6%, 99-99.9%, or the like, but the present invention is not limited thereto.

[0025] More specifically, the mass ratio of the composite deodorant to menthyl glycol is 1:2-4. Further preferably, the mass ratio of the composite deodorant to menthyl glycol is 1:3. More specifically, the mass ratio of the cosolvent to the solubilizer is 1:4-8.

[0026] Preferably, the mass ratio of the lycopodiella vulgaris extract to the eucalyptus leaf extract is (1-3): (3-5).

[0027] Preferably, the solubilizer is selected from one or more of hydrogenated castor oil and its derivatives, SE-1, Span 60, Span 80, and polyethylene glycol-based solubilizers. Preferably, the solubilizer is selected from hydrogenated castor oil and its derivatives. More specifically, the hydrogenated castor oil and its derivatives can be conventionally used in the art, including but not limited to PEG-40 hydrogenated castor oil. Specifically, the solubilizer used in the present invention should not exceed 2% of the total weight, as otherwise it will cause foaming during spraying and the spray will feel sticky on pet hair, affecting the user experience and pet compatibility.

[0028] Preferably, the cosolvent is selected from C 1-5 Fatty alcohol. Further preferably, C 1-5 Fatty alcohols include, but are not limited to, propylene glycol, 1,3-butylene glycol, and the like.

[0029] Preferably, the propellant is selected from one or more of dimethyl ether, propane, butane, carbon dioxide, nitrogen, propane, butane, and freon. Further preferably, the propellant is dimethyl ether. Dimethyl ether is hydrophilic and its addition amount is not restricted; a higher content improves atomization. Using propellants such as propane requires a large amount of solubilizers or emulsifiers, and requires thorough shaking before use. Therefore, dimethyl ether is the preferred propellant.

[0030] Furthermore, the present invention seeks protection for a method for preparing an insect repellent aerosol, comprising the following steps: mixing a composite deodorant, menthyl glycol, polyvinyl pyrrolidone, an antistatic agent, a solubilizer, a cosolvent and water, canning the mixture, and then adding a propellant to prepare the insect repellent aerosol.

[0031] Furthermore, the present invention seeks to protect the use of an insect repellent aerosol in repelling insects and / or preventing insect bites.

[0032] Furthermore, the present invention seeks to protect the use of an insect repellent aerosol in repelling insects and / or preventing insect bites on pets outdoors.

[0033] More specifically, the insect repellent aerosol is particularly suitable for pets such as cats, dogs and other animals with abundant hair. The insect repellent aerosol is particularly suitable for biting pests such as mosquitoes, fleas, ticks, midges and the like.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] The present invention provides an insect repellent aerosol, which adopts a specific combination of composite deodorant, menthyl glycol of specific purity, polyvinyl pyrrolidone, polydimethylsiloxane quaternary ammonium salt and other components in the system to achieve excellent insect repellent and mosquito bite prevention effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is an appearance diagram of the insect repellent aerosol prepared according to an embodiment of the present invention. DETAILED DESCRIPTION

[0037] The present invention is further described below with reference to the specification and specific examples, which are not intended to limit the present invention in any way. Unless otherwise specified, the reagents, methods, and equipment used in the present invention are conventional reagents, methods, and equipment in the art.

[0038] The raw materials of the embodiments and comparative examples are as follows:

[0039] Deer Hoof Grass Extract, Shanghai Jiayu Biotechnology Co., Ltd.

[0040] Eucalyptus leaf extract, Shanghai Jiayu Biotechnology Co., Ltd.

[0041] Menthylene glycol 1, purity ≥99%, Japan Takasago Flavors & Fragrances Co., Ltd.

[0042] Menthylene glycol 2, purity 94%, Xiamen Amber Daily Chemical Fragrance Co., Ltd.

[0043] Antistatic agent, polydimethylsiloxane quaternary ammonium salt, SQ 1, Evonik Specialty Chemicals (Shanghai) Co., Ltd.

[0044] Polyvinylpyrrolidone, povidone K30, Evonik Specialty Chemicals (Shanghai) Co., Ltd.

[0045] Solubilizer 1, hydrogenated castor oil, commercially available.

[0046] Solubilizer 2, Span 80, commercially available.

[0047] The cosolvent is 1,1,3-butanediol, which is commercially available.

[0048] Cosolvent 2, isopropyl alcohol, commercially available.

[0049] Propellant 1, dimethyl ether, commercially available.

[0050] Propellant 2, propane-butane, commercially available.

[0051] Tea polyphenols, commercially available.

[0052] Pet essential oil insect repellent spray, APDC organic insect repellent spray, main ingredients: Melaleuca alternifolia, citronella, and neem.

[0053] Unless otherwise specified, the components (such as solubilizers, cosolvents, etc.) used in the parallel examples and comparative examples are all the same commercially available products.

[0054] Example 1

[0055] The weight parts of the raw materials used in Example 1 are shown in Table 1.

[0056] A method for preparing an insect repellent aerosol, comprising the following steps:

[0057] Menthyl glycol, a composite deodorant (a mixture of elm green extract and eucalyptus leaf extract in a mass ratio of 2:3 to obtain a composite deodorant), a solubilizer, a cosolvent, an antistatic agent, and polyvinyl pyrrolidone are added into a stirring kettle, stirred until clear and transparent, and then deionized water is slowly added and stirred until clear and transparent to obtain a mixed solution; the mixed solution is filled into an aerosol can, a valve is inserted, and the can is sealed, and then a propellant is poured into the aerosol can to obtain an insect repellent aerosol.

[0058] Example 2 to Example 7

[0059] The weight parts of the raw materials used in the following examples are shown in Table 1.

[0060] The specific preparation steps of the following examples are the same as those of Example 1.

[0061] Comparative Examples 1 to 7

[0062] The weight parts of the raw materials used in the following Comparative Examples 1 to 6 are shown in Table 2.

[0063] The specific preparation steps of Comparative Examples 1 to 6 are the same as those of Example 1.

[0064] Comparative Example 7 uses pet essential oil insect repellent spray.

[0065] Table 1

[0066] Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Example 7 Menthyl alcohol 1 2 5 2 2 2 2 3 Compound deodorant 0.5 0.5 2 1 0.5 0.2 0.8 Polyvinylpyrrolidone 0.05 0.05 0.05 0.05 0.05 0.1 0.01 antistatic agent 0.2 0.2 0.2 0.2 0.5 0.1 0.3 Solubilizer 1 1 1 1 / 1 1 1 Solubilizer 2 / / / 2 / / / Cosolvent 1 8 20 8 / 8 8 8 Cosolvent 2 / / / 6 / / / Propellant 1 40 40 40 / 70 40 40 Propellant 2 / / / 30 / / / Deionized water 48.25 33.25 46.75 58.75 17.95 48.6 46.89

[0067] Table 2

[0068]

[0069]

[0070] Test Example 1 Homogeneous Transparency Verification Test

[0071] Homogeneous transparency verification test at room temperature: The aerosols prepared in the examples and comparative examples were shaken thoroughly and injected into glass aerosol can test tubes respectively. After standing for 24 hours, the results were observed. The observation results are shown in Table 3 and Figure 1 shown.

[0072] Table 3 Sample appearance

[0073] Sample name Appearance of the sample after standing Appearance of samples after thermal storage Example 1 Homogeneous and transparent Homogeneous and transparent Example 2 Homogeneous and transparent Homogeneous and transparent Example 3 Homogeneous and transparent Homogeneous and transparent Example 4 Layering Layering Example 5 Homogeneous and transparent Homogeneous and transparent Example 6 Homogeneous and transparent Homogeneous and transparent Example 7 Homogeneous and transparent Homogeneous and transparent Comparative Example 1 Layering Layering Comparative Example 2 Homogeneous and transparent Homogeneous and transparent Comparative Example 3 Homogeneous and transparent Homogeneous and transparent Comparative Example 4 Homogeneous and transparent Homogeneous and transparent Comparative Example 5 Homogeneous and transparent Homogeneous and transparent Comparative Example 6 Homogeneous and transparent Homogeneous and transparent

[0074] As can be seen from the results, Comparative Example 1 uses 94% pure menthane diol. During the batching process, the product is a milky white liquid. After being filled into the aerosol can, the product stratifies after standing and after hot storage. Example 4 uses a propane-butane system. The product has a milky white appearance. After filling with propane-butane, the product stratifies and needs to be shaken thoroughly before use. The product appearance determines the stability and usage of the product. As an aerosol, a homogeneous and transparent aerosol provides a better user experience and a more uniform spray.

[0075] Test Example 2: Simulated mosquito repellent test

[0076] The aerosols prepared in the examples and comparative examples and the commercially available competing products were subjected to a simulated mosquito repellent test. The specific method is as follows: the test was carried out using the triple cylinder method. Prepare three cylinders with an outer diameter of 20 cm, apply the test agent evenly to one cylinder according to the recommended dosage and seal it, and leave the other cylinder untreated. After 1 hour and 2 hours, connect and assemble the three cylinders, and release mosquitoes from the middle cylinder, 30 female Aedes albopictus mosquitoes. After the mosquitoes are no longer flying around, half-open the partitions on both sides. After 30 minutes, observe the number of mosquitoes in the cylinders on both sides and calculate the repellency rate. The test was repeated 3 times and the average value was taken. Clean the test apparatus after each test. The test results are shown in Table 4.

[0077] Table 4 Simulated mosquito repellent test

[0078] Sample name 1 hour repellency rate% 2-hour repellency rate% Example 1 86.6±3.4 75.4±4.2 Example 2 90.7±3.3 86.4±2.4 Example 3 88.4±3.3 78.4±3.2 Example 4 87.4±2.4 76.4±12.4 Example 5 87.5±3.2 76.5±3.3 Example 6 87.5±2.8 74.4±2.6 Example 7 89.4±2.7 78.2±2.4 Comparative Example 1 64.4±12.7 58.4±16.5 Comparative Example 2 69.4±3.1 54.5±2.5 Comparative Example 3 67.1±3.3 59.8±3.1 Comparative Example 4 72.2±2.6 54.6±2.3 Comparative Example 5 69.6±3.1 54.5±2.5 Comparative Example 6 64.5±2.7 48.4±5.7 Comparative Example 7 54.2±6.4 34.7±14.2

[0079] From the above data, it can be seen that the insect repellent aerosol provided by the present invention has an excellent repellent effect on mosquitoes, with a repellent rate of ≥86.6±3.4% in 1 hour and ≥74.4±2.6% in 2 hours.

[0080] The results of Examples 1, 2, and Comparative Example 6 show that different levels of menthyl glycol significantly differ in repellency, particularly when the concentration is below 2%, resulting in significantly more mosquitoes landing. The repellency of menthyl glycol at a concentration of 5% is slightly better than that at a concentration of 2%.

[0081] From the results of Example 1, Example 3, and Comparative Example 5, it can be seen that the repellency rates are quite different at different contents of the composite deodorant. When no deodorant is added, the repellency rate is only about 69% in one hour. After adding the composite deodorant, the repellency rate is greater than 86% in one hour. There is no significant difference between the composite deodorant contents of 0.5% and 2%.

[0082] From Example 1 and Comparative Example 1, it can be seen that menthylene glycol with a purity of 94% is difficult to achieve the technical effect of the present invention. The reason may be that the solution system is unstable and the drug content is inconsistent during spraying, resulting in excessive test fluctuations.

[0083] It can be seen from Example 1, Example 5 and Comparative Example 3 that whether or not an antistatic agent is added has no obvious effect in the simulated mosquito repellent test.

[0084] From the results of Example 1, Comparative Example 2, and Comparative Example 5, it can be seen that different deodorants have a significant effect on the repellency rate. There is no significant difference between the traditional tea polyphenol deodorant and the deodorant without adding a composite deodorant.

[0085] It can be seen from Example 1 and Comparative Example 4 that the aerosol does not contain polyvinyl pyrrolidone and the technical effect of the present invention cannot be achieved.

[0086] From Example 1 and Comparative Example 7, it can be seen that although the plant essential oil alone has a strong odor, its insect repellent effect is limited, especially after 2 hours, there is basically no obvious protective effect, which cannot meet the needs of pets for outdoor activities.

[0087] Test Example 3: Pet Mosquito Repellent Test

[0088] Refer to Part 9: Indoor Efficacy Test and Evaluation of Public Health Insecticides for Pesticide Registration, Repellents. Aedes albopictus was used as the biological test system, with 300 adult female mosquitoes. Methods: Four pet dogs weighing approximately 10 kg were selected for the attack test. Specifically, the dogs' feet were exposed for 4 cm, while the rest of the dog's feet, which were placed deep within the mosquito cage, were protected with a PE cover, with the remaining area tightly shielded. The dogs' feet were placed in the mosquito cage and the number of mosquitoes landing was observed for 2 minutes. A landing rate of 20 or more was considered acceptable. During the test, the aerosols prepared in the Examples and Comparative Examples, as well as a commercially available competitor, were applied at a rate of 0.5 g per foot. The feet were placed in the mosquito cage, and the number of mosquitoes landing was counted. If a mosquito landed, the dog was shaken to prevent it from biting or sucking blood. The bite rate was calculated based on the total number of landings and the number of landings. Bite rate (percentage, rounded to an integer) = number of landings in the test cage / number of landings in the blank cage * 100. The bite rate was measured at 0 and 2 hours. The test data is shown in Table 5.

[0089] Table 5 Pet bite rate test

[0090]

[0091]

[0092] The above data show that the insect repellent aerosol provided by the present invention can effectively prevent mosquito bites in the pet mosquito repellent test. The insect repellent aerosol provided by the present invention has a bite rate of ≤6% at 0 hours and a bite rate of ≤17% at 2 hours.

[0093] From the results of Example 1, Example 3, Comparative Example 2, and Comparative Example 5, it can be seen that different contents of the composite deodorant have significantly different effects on the bite rate, with significant differences observed whether at 0 hours or 2 hours. Without the composite deodorant, the bite rate at 0 hours was 20%, and the bite rate at 2 hours was 31%. After adding 0.5% of the composite deodorant, the bite rate dropped significantly to 6%. However, there was no significant difference between 0.5% and 2%, with the bite rate being around 6%. Using the universal deodorant tea polyphenol as a deodorant, the bite rate at 0 hours was 12%, and the bite rate at 2 hours was 36%, a significantly higher anti-bite rate than the composite deodorant used in the present invention. The inventors speculate that the presence of the composite deodorant can reduce the characteristic odor of pets, thereby reducing the chance of mosquito bites. While tea polyphenols can remove odors, they are not very effective at removing the characteristic odor of pets.

[0094] It can be seen from Example 1 and Comparative Example 3 that the bite rate is significantly reduced when an antistatic agent is included.

[0095] From Example 1 and Comparative Example 4, it can be seen that whether polyvinyl pyrrolidone is contained has little effect on the short-term protection against mosquito bites, but has a very significant effect on the 2-hour bite rate.

[0096] From the results of comparative example 7, it can be seen that the results are basically consistent with the simulated mosquito repellent test results, and the effect of pure essential oil on preventing pet bites is not obvious.

[0097] The foregoing examples are merely illustrative, serving to illustrate some of the features of the method of the present invention. The appended claims are intended to claim the widest possible scope that can be envisioned, and the embodiments presented herein are demonstrated by the applicant's actual experimental results. Therefore, the applicant intends that the appended claims are not limited by the selection of examples illustrating the features of the present invention. Some numerical ranges used in the claims also include subranges therein, and variations in these ranges should also be interpreted as being covered by the appended claims where possible.

Claims

1. An insect repellent aerosol, characterized in that: The invention comprises the following components by weight: 0.2-2 parts of a composite deodorant, 2-5 parts of menthyl glycol, 0.01-0.1 parts of polyvinyl pyrrolidone, 0.1-0.5 parts of an antistatic agent, 0.2-2 parts of a solubilizer, 3-20 parts of a cosolvent, 30-70 parts of a propellant, and 10-65 parts of water; The antistatic agent is polydimethylsiloxane quaternary ammonium salt; The composite deodorant is a mixture of sedge extract and eucalyptus leaf extract; The purity of the menthyl glycol is ≥99%.

2. The insect repellent aerosol according to claim 1, characterized in that: The mass ratio of the elm green grass extract to the eucalyptus leaf extract is (1-3): (3-5).

3. The insect repellent aerosol according to claim 1, characterized in that: The solubilizer is selected from one or more of hydrogenated castor oil and its derivatives, SE-1, Span 60, Span 80, and polyethylene glycol solubilizers.

4. The insect repellent aerosol according to claim 3, characterized in that: The solubilizing agent is selected from hydrogenated castor oil and its derivatives.

5. The insect repellent aerosol according to claim 1, characterized in that: The propellant is selected from one or more of dimethyl ether, propane-butane, carbon dioxide, nitrogen, propane-butane, and freon.

6. The insect repellent aerosol according to claim 5, characterized in that: The propellant is dimethyl ether.

7. The insect repellent aerosol according to claim 1, characterized in that: The cosolvent is selected from C 1-5 Fatty alcohol.

8. The method for preparing the insect repellent aerosol according to any one of claims 1 to 7, characterized in that: The following steps are involved: The compound deodorant, menthyl glycol, polyvinyl pyrrolidone, antistatic agent, solubilizer, cosolvent and water are mixed, canned, and then a propellant is added to prepare an insect repellent aerosol.

9. Use of the insect repellent aerosol according to any one of claims 1 to 7 in the preparation of insect repellent and / or insect bite prevention products.

10. Use of the insect repellent aerosol according to any one of claims 1 to 7 in the preparation of outdoor pet insect repellent and / or insect bite prevention products.

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