Insect expelling aerosol as well as preparation method and application thereof

Abstract

The invention discloses an insect repellent aerosol as well as a preparation method and application thereof. The insect expelling aerosol is prepared from the following components in parts by weight: 0.2 to 2 parts of a composite deodorant, 2 to 5 parts of menthol, 0.01 to 0.1 part of polyvinylpyrrolidone, 0.1 to 0.5 part of an antistatic agent, 0.2 to 2 parts of a solubilizer, 3 to 20 parts of a cosolvent, 30 to 70 parts of a propellant and 10 to 65 parts of water, the antistatic agent is polydimethylsiloxane quaternary ammonium salt; the compound deodorant is a mixture of a pyrola rotundifolia extract and a eucalyptus leaf extract; the purity of the menthanediol is greater than or equal to 99%. The insect expelling aerosol has excellent effects of expelling insects and preventing mosquito bites.

Description

Technical Field

[0001] The invention belongs to the technical field of drug deworming, and more specifically, relates to a deworming aerosol and a preparation method and use thereof. Background Art

[0002] As the carrier of human relationships and emotions, pets have an increasingly greater impact on human social activities with the development of the economy, and more and more consumers are raising pets. However, pets are products of nature and domesticated by humans, and they also have a need for outdoor activities, especially pet dogs, which generally need to go outdoors 1-2 times a day. Outdoor activities will inevitably be disturbed by biting pests such as mosquitoes, fleas, ticks, and midges. The bites of these biting pests will not only cause abnormal behavior in pets, but also spread diseases and even bring pests home, thus affecting the physical and mental health of pet owners.

[0003] Pet insect repellent is classified as veterinary medicine. Currently, pet collars and drops containing chemical pesticides are the main ones. The main mechanism of action is that the chemical drugs are absorbed through the skin and spread throughout the body. After the pests bite and suck blood, trace amounts of chemical pesticides cause the pests to die. Although this type of product has a long lasting effect and significant effects, chemical pesticides still exist in the body and endanger the health of pets. In addition, when pests invade the hair, they do not bite immediately, so there is a possibility that the pests will be brought home.

[0004] In addition, for plant-based pet insect repellent spray products, the spray cannot penetrate the hair and is easily wiped off during running and playing, making it difficult to truly exert its effect; from the perspective of formula design, the products mostly contain alcohol, which is not very friendly to pets. Furthermore, the current development of pet insect repellent products mainly protects against the bites or landing behaviors of pests themselves, but in fact, taking mosquitoes as an example, the bite of animals is a complicated process. The first step is tracking, which is based on the carbon dioxide exhaled by the animal or the odor emitted by the body; the second step is landing, generally after tracking the animal, it will choose a hidden place to land; the third step is biting, that is, it will choose a moist place to bite.

[0005] Therefore, simply relying 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 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 by the following technical solutions:

[0011] An 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 spatholobus extract and a eucalyptus leaf extract; and the purity of the menthyl glycol is ≥99%.

[0012] The present invention uses a specific combination of 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 uses a mixture of spatholobi extract and eucalyptus leaf extract as a composite deodorant, and the combination of the two has an excellent synergistic effect. Compared with existing deodorants (such as tea polyphenols), the composite deodorant used in the present invention can reduce the characteristic odor of pets, has a better removal effect on the characteristic odor of pets, and can effectively reduce the identification and tracking of biting pests such as mosquitoes. In addition, the proportion of the composite deodorant used in the present invention is also significantly lower than that of mosquito repellent used for human bodies, which can achieve effective protection and high cost performance.

[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 a water system, conventional menthyl glycol has a low solubility, and stratification occurs. Through research, the inventors found that the solubility of menthyl glycol with a purity of ≥99% in a water 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 than menthyl glycol with a slightly lower purity (94%) in terms of insect repellency and prevention of mosquito bites.

[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 possibility of drugs being wiped off by pets playing, thereby increasing the lasting protective time of the product.

[0016] Furthermore, since the use of a co-solvent may cause the problem of pet hair sticking, thereby affecting the insect repellent and insect prevention effects, the inventors have found through research 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 prevention effects.

[0017] The aerosol combination provided by the present invention adopts a specific combination of composite deodorant, menthyl glycol of specific purity, polyvinyl pyrrolidone, and polydimethylsiloxane quaternary ammonium salt, and has the advantages of simple application, deep penetration into the pet's hair, high safety, significant insect repellent effect, low cost, etc., and is suitable for outdoor pet insect repellent. The aerosol form avoids the problem that the spray is difficult to penetrate into the hair, and avoids the problem that the pet's hair is wet after too much spray, and the application of the medicine is difficult and difficult to penetrate into the hair. The aerosol has good uniformity and penetration, and has the advantages of simple application and strong penetration.

[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 the menthanediol 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 parts, 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 may be 99.1%, 99.2%, 99.3%, 99.4%, 99.5%, 99.6%, 99.7%, 99.8%, 99.9%, 99.99%, 99.999%, etc., or an interval range formed by any of the above values, such as 99.1-99.8%, 99.2-99.6%, 99-99.9%, etc., and 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 spatholobi 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 solubilizers. Preferably, the solubilizer is selected from hydrogenated castor oil and its derivatives. More specifically, the hydrogenated castor oil and its derivatives can be hydrogenated castor oil and its derivatives conventionally used in the art, including but not limited to PEG-40 hydrogenated castor oil. Specifically, the amount of the solubilizer in the present invention should not exceed 2%, otherwise it will cause foam to be generated during spraying, and the spray will feel sticky on the pet's hair, affecting the use experience and pet adaptability.

[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, carbon dioxide, nitrogen, propane, and freon. Further preferably, the propellant is dimethyl ether. Dimethyl ether is hydrophilic, and the amount of addition is not limited. The higher the content, the better the atomization. However, using propane as a propellant requires a large amount of solubilizer or emulsifier, and it needs to be fully shaken before use, so the preferred propellant is dimethyl ether.

[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, 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 outdoor insect repellent and / or insect bite prevention for pets.

[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 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 in conjunction with the specification and specific examples, but the examples do not limit the present invention in any form. 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] Menthyl glycol 1, purity ≥99%, Japan Takasago Flavors & Fragrances Co., Ltd.

[0042] Menthyl 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] Polyvinyl pyrrolidone, 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, isopropanol, 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: Niaouli, citronella, neem.

[0053] Unless otherwise specified, the components (such as solubilizers, co-solvents, etc.) selected 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, the specific steps comprising:

[0057] Menthyl glycol, a composite deodorant (a mixture of a spatholobi extract and a 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] Embodiment 2 to Embodiment 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 Example 1 to Comparative Example 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 Agents 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 / / / Solvent 1 8 20 8 / 8 8 8 Solvent 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 fully shaken and injected into glass aerosol can test tubes respectively, and then observed after standing for 24 hours. 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] From the results, it can be seen that in Comparative Example 1, because the purity of 94% menthane diol is used, the product is a milky white liquid during the batching process. After filling into the aerosol can, the product is stratified after standing and after hot storage. The propane-butane system used in Example 4 has a milky white appearance. After filling with propane-butane, the product is stratified and needs to be fully shaken before use. The appearance of the product determines the stability and use of the product. As an aerosol, the homogeneous and transparent use experience is better and the spray is more uniform.

[0075] Test Example 2: Simulated mosquito repellent test

[0076] The aerosols prepared in the embodiments and comparative examples and the competitive products on the market were subjected to simulated mosquito repellent tests. The specific method is as follows: The test was carried out using the triple cylinder method. Three cylinders with an outer diameter of 20 cm were prepared, and the test agent was evenly applied to one cylinder according to the recommended dosage and then sealed, and the cylinder on the other side was not treated. After 1 hour and 2 hours, the three circles were connected and assembled, and mosquitoes, 30 female Aedes albopictus mosquitoes, were released from the middle cylinder. After the mosquitoes were no longer flying, the partitions on both sides were half-opened. After 30 minutes, the number of mosquitoes in the cylinders on both sides was observed, and the repellency rate was calculated. The test was repeated 3 times and the average value was taken. The test device was cleaned after each test. The test results are shown in Table 4.

[0077] Table 4 Simulated mosquito repellent test

[0078] Sample name 1 hour repellency % 2 hours repellency % 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] It can be seen from the above data that the insect repellent aerosol provided by the present invention has an excellent repelling effect on mosquitoes, with a 1-hour repelling rate of ≥86.6±3.4% and a 2-hour repelling rate of ≥74.4±2.6%.

[0080] From the results of Example 1, Example 2, and Comparative Example 6, it can be seen that the repellency rates of different contents of menthyl glycol are significantly different, especially when it is lower than 2%, more mosquitoes land. The repellency rate of menthyl glycol with a content of 5% is slightly better than that of menthyl glycol with a content 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] It can be seen from Example 1 and Comparative Example 1 that it is difficult for menthyl glycol with a purity of 94% 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 pure plant essential oil has a strong odor, the 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 of Indoor Efficacy Test and Evaluation of Sanitary Insecticides for Pesticide Registration: Repellents, and select Aedes albopictus as the biological test system, 300 female adult mosquitoes. Method: Select 4 pet dogs weighing about 10 kg for attack power test. Specifically, the pet directly exposes 4 cm of its feet, and the other parts that go deep into the mosquito cage are protected with PE sleeves, and the rest are tightly covered. Put the feet in the mosquito cage, observe the number of mosquitoes landing for 2 minutes, and if the landing exceeds 20 times, it is recorded as qualified in attack power. During the test, the aerosol prepared in the embodiment and comparative example and the commercially available competitive products are applied at 0.5g / foot, and the feet are placed in the mosquito cage to calculate the number of mosquitoes landing. If the mosquitoes land, shake them to prevent mosquitoes from biting and sucking blood. According to the total number and the number of landings, calculate the bite rate. Bite rate% (retain integers) = test landing number / blank landing number*100. Test the bite rate for 0 hours and 2 hours respectively. The test data are shown in Table 5.

[0089] Table 5 Pet bite rate test

[0090]

[0091]

[0092] From the above data, it can be seen 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 0-hour bite rate of ≤6% and a 2-hour bite rate of ≤17%.

[0093] From the results of Example 1, Example 3, Comparative Example 2, and Comparative Example 5, it can be seen that the effects of different contents of composite deodorants on the bite rate are significantly different, whether it is 0 hours or 2 hours, there will be a big difference. When no composite deodorant is added, the bite rate is 20% at 0 hours and 31% at 2 hours. After adding 0.5% of the composite deodorant, the bite rate dropped sharply to 6%. However, there is no significant difference between 0.5% and 2%, and the bite rate is about 6%. When the general deodorant tea polyphenol is used as a deodorant, its 0-hour bite rate is 12% and the 2-hour bite rate is 36%, and its anti-bite rate is significantly higher than the composite deodorant used in the present invention. The inventor speculates that when a composite deodorant is contained, the characteristic odor of pets can be reduced, thereby reducing the probability of mosquito bites. Although tea polyphenols can remove odors, the removal effect of characteristic odors of pets is not good.

[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] It can be seen from Example 1 and Comparative Example 4 that whether polyvinyl pyrrolidone is contained does not have much effect on 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 essential oil alone in preventing pet bites is not obvious.

[0097] The foregoing examples are merely illustrative and are used to explain some features of the method of the present invention. The appended claims are intended to require the widest possible range that can be imagined, and the embodiments presented herein are demonstrated by the applicant's actual test results. Therefore, the applicant's intention is that the appended claims are not limited by the selection of examples that illustrate the features of the present invention. Some numerical ranges used in the claims also include sub-ranges therein, and changes 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 composition comprises the following components by weight: 0.2-2 parts of composite deodorant, 2-5 parts of menthyl glycol, 0.01-0.1 parts of polyvinyl pyrrolidone, 0.1-0.5 parts of antistatic agent, 0.2-2 parts of solubilizer, 3-20 parts of cosolvent, 30-70 parts of propellant and 10-65 parts of water; The antistatic agent is polydimethylsiloxane quaternary ammonium salt; The composite deodorant is a mixture of a spatholobi extract and a eucalyptus leaf extract; The purity of the menthanediol is ≥99%.

2. The insect repellent aerosol according to claim 1, characterized in that: The mass ratio of the spatholobi 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, co-solvent 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 repelling insects and / or preventing insect bites.

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

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