Insecticidal aerosol composition and preparation method thereof

Abstract

The invention discloses an insecticidal aerosol composition. The insecticidal aerosol composition comprises the following components in percentage by weight: 0.2-15% of an insecticidal active ingredient and the balance of a solvent, 0.001% to 1.5% of phytoncide; 0.1%-1% of a spreading penetrant; 0.05%-0.3% of a solubilizer; 1-5% of a cosolvent; 40%-50% of a propellant; and the balance of deionized water. The invention also discloses a preparation method of the insecticidal aerosol composition. Through high volatility of phytoncide, a certain repelling effect can be generated on pests, so that the phenomenon that mosquito-repellent incense is used again at the night after the insecticidal aerosol is used is reduced. In addition, secondary volatilization of phytoncide is boosted by utilizing the characteristics of low residue and easy spreading of phytoncide, and the problem that the medicament is embedded and left is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of insecticide aerosols, and in particular, relates to an insecticide aerosol composition and a preparation method thereof. Background Art

[0002] At present, the main dosage forms of sanitary insecticide products include mosquito coils, electric mosquito coils, electric mosquito coil liquid, and insecticide aerosols. Generally speaking, the use of insecticide aerosols to control pests has a good killing effect on pests that come into direct contact with the agent only within a short period of time after the aerosol is sprayed. In order to continuously kill indoor flying pests or repel outdoor flying insects from entering the room, mosquito coils or electric mosquito coils are needed to continuously volatilize the active ingredients into the indoor space.

[0003] Therefore, after using insecticide aerosol at dusk or at night, although most of the mosquitoes in the room are killed, mosquito coils or electric mosquito coils are still needed to assist in repelling mosquitoes to avoid mosquito bites. In addition, after using insecticide aerosol in the space, the droplets settle and form a layer of oil or paste on the plane below the aerosol application area (such as a table, the ground, etc.), and the settled oil or paste needs to be cleaned up separately. Summary of the invention

[0004] In order to solve the above existing technical problems, an insecticide aerosol composition and a preparation method thereof are provided according to an embodiment of the present invention.

[0005] According to one aspect of an embodiment of the present invention, the insecticidal aerosol composition provided comprises the following components by weight percentage: 0.2% to 15% of insecticidal active ingredients; 0.001% to 1.5% of phytoncide; 0.1% to 1% of a spreading penetrant; 0.05% to 0.3% of a solubilizer; 1% to 5% of a cosolvent; 40% to 50% of a propellant; and the balance is deionized water.

[0006] In an example of the insecticidal aerosol composition provided in the above aspect, the phytoncide includes at least one of thujacene, sabinene, camphene, myrcene, limonene, cymene and linalyl acetate.

[0007] In an example of the insecticidal aerosol composition provided in the above aspect, the phytoncide includes the following components by weight percentage: 0.01% to 0.5% thujacene; 0.1% to 10% sabinene; 1% to 5% camphene; 1% to 10% myrcene; 1% to 10% limonene; 30% to 50% cymene; 20% to 55% linalyl acetate; wherein the sum of the weight percentages of all components is 100%.

[0008] In an example of the insecticidal aerosol composition provided in the above aspect, the insecticidal active ingredient includes at least one of permethrin, pralotrimethrin, dextrorotatory trans-dextrorotatory phenothrin, dinotefuran, thiamethoxam and chlorantraniliprole.

[0009] In an example of the insecticidal aerosol composition provided in the above aspect, the spreading penetrant includes 1-dodecylazacycloheptane-2-one and piperonyl butoxide, wherein the weight ratio of the 1-dodecylazacycloheptane-2-one to the piperonyl butoxide is 0.5:1 to 3:1.

[0010] In an example of the insecticidal aerosol composition provided in the above aspect, the solubilizer includes at least one of fatty acid diglycerides, sucrose fatty acid esters, fatty alcohol polyoxyethylene ethers, sorbitan isostearate, polyoxyethylene fatty acid esters and polyoxyethylene-polyoxypropylene copolymers.

[0011] In an example of the insecticidal aerosol composition provided in the above aspect, the co-solvent includes at least one of 3-methoxy-3-methyl-1-butanol, isopropanol and propylene glycol.

[0012] In an example of the insecticidal aerosol composition provided in the above aspect, the propellant is a mixture of propane and butane, wherein the weight ratio of the propane to the butane is 1:3 to 1:4.

[0013] According to another aspect of an embodiment of the present invention, the method for preparing the above-mentioned insecticidal aerosol composition includes: step S1, preparing a phytoncide solution; step S2, mixing the insecticidal active ingredient, a spreading penetrant, a solubilizer, a cosolvent and the phytoncide solution and stirring them evenly, and adding deionized water thereto under stirring to obtain an emulsion-like liquid; step S3, filling the emulsion-like liquid into a can body, sealing the can body and filling it with a propellant.

[0014] In an example of the method for preparing the insecticidal aerosol composition provided in the above-mentioned other aspect, the step S1 specifically includes: adding linalyl acetate into a batching kettle, and then sequentially adding thujacene, sabinene, camphene, myrcene, limonene and cymene into the batching kettle, mixing, stirring evenly and sealing and aging for 24 hours to obtain the phytoncide solution.

[0015] Beneficial effects: The invention uses the high volatility of phytoncide to produce a certain repellent effect on pests, thereby reducing the phenomenon of using mosquito coils again that night after using insecticide aerosols. In addition, the low-residue and easy-spreading characteristics of the invention promote the secondary volatilization of phytoncide, solving the problem of the drug being embedded and residual. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and other aspects, features and advantages of the embodiments of the present invention will become more apparent through the following description in conjunction with the accompanying drawings, in which:

[0017] Figure 1 Schematic diagram of the retention appearance of the insecticide aerosols of Examples 1 to 3 of the present invention and Comparative Examples 1 to 3 after spraying on ceramic tiles;

[0018] Figure 2 Schematic diagram of the retention appearance of the insecticide aerosols of Examples 1 to 3 and Comparative Examples 1 to 3 according to the present invention after spraying on a wooden floor;

[0019] Figure 3 It is a schematic diagram of the retention appearance of the insecticide aerosols of Examples 1 to 3 of the present invention and Comparative Examples 1 to 3 after spraying on cement ground. DETAILED DESCRIPTION

[0020] In order to enable ordinary persons in the art to better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below.

[0021] Example 1

[0022] According to Example 1 of the present invention, an insecticidal aerosol composition is provided. The insecticidal aerosol composition comprises the following components by weight percentage:

[0023]

[0024] Furthermore, the phytoncide comprises the following components by weight percentage:

[0025]

[0026]

[0027] The preparation method of the insecticidal aerosol composition according to Example 1 of the present invention comprises the following steps:

[0028] S1, adding linalyl acetate into a batching kettle, then sequentially adding thujacene, sabinene, camphene, myrcene, limonene and cymene into the batching kettle, mixing, stirring evenly and sealing and aging for 24 hours to allow their molecules to interpenetrate and fuse, thereby obtaining a phytoncide solution;

[0029] S2, mixing the insecticidal active ingredient, the spreading penetrant, the solubilizer, the cosolvent and the phytoncide solution of step S1 and stirring them uniformly, and slowly adding deionized water thereto under stirring to obtain an emulsion-like liquid;

[0030] S3, loading the emulsion-like liquid into a can body, sealing the can body and then filling the propellant.

[0031] Example 2

[0032] According to Example 2 of the present invention, an insecticidal aerosol composition is provided. The insecticidal aerosol composition comprises the following components by weight percentage:

[0033]

[0034]

[0035] In addition, the phytoncide comprises the following components by weight percentage:

[0036]

[0037] The preparation method of the insecticidal aerosol composition according to Example 2 of the present invention comprises the following steps:

[0038] S1, adding linalyl acetate into a batching kettle, then sequentially adding thujacene, sabinene, camphene, myrcene, limonene and cymene into the batching kettle, mixing, stirring evenly and sealing and aging for 24 hours to allow their molecules to interpenetrate and fuse, thereby obtaining a phytoncide solution;

[0039] S2, mixing the insecticidal active ingredient, the spreading penetrant, the solubilizer, the cosolvent and the phytoncide solution of step S1 and stirring them uniformly, and slowly adding deionized water thereto under stirring to obtain an emulsion-like liquid;

[0040] S3, loading the emulsion-like liquid into a can body, sealing the can body and then filling the propellant.

[0041] Example 3

[0042] According to Example 3 of the present invention, an insecticidal aerosol composition is provided. The insecticidal aerosol composition comprises the following components by weight percentage:

[0043]

[0044]

[0045] Furthermore, the phytoncide comprises the following components by weight percentage:

[0046]

[0047] The preparation method of the insecticidal aerosol composition according to Example 3 of the present invention comprises the following steps:

[0048] S1, adding linalyl acetate into a batching kettle, then sequentially adding thujacene, sabinene, camphene, myrcene, limonene and cymene into the batching kettle, mixing, stirring evenly and sealing and aging for 24 hours to allow their molecules to interpenetrate and fuse, thereby obtaining a phytoncide solution;

[0049] S2, mixing the insecticidal active ingredient, the spreading penetrant, the solubilizer, the cosolvent and the phytoncide solution of step S1 and stirring them uniformly, and slowly adding deionized water thereto under stirring to obtain an emulsion-like liquid;

[0050] S3, loading the emulsion-like liquid into a can body, sealing the can body and then filling the propellant.

[0051] Table 1 below shows the components and their weight percentages of three comparative examples.

[0052] Table 1 ratio

[0053]

[0054]

[0055] The above-mentioned embodiments and comparative examples were evaluated for their repellent effects according to the following test method.

[0056] In a room 6 meters long (vertical) and 3 meters wide (horizontal), there are 4 windows of 2.25 square meters symmetrically set on the two horizontal walls, and the lower edge of the windows is 1.5 meters from the ground. Before the test, 6 hanging hooks are set at the intersections of 1.5 meters, 3.5 meters and 5.5 meters in the vertical direction and 1 meter and 2 meters in the horizontal direction.

[0057] The test personnel stood 1.5 meters away from the center of the horizontal wall, close to the wall, and sprayed the aerosol at 45 degrees upwards for 5 seconds. After 15 minutes in a closed room, the window was opened for ventilation for 20 minutes. A mosquito cage consisting of a mosquito release area, a buffer area and an observation area was fixed on the hanging hook. The mosquito-proof area, the buffer area and the observation area were made of gauze with a specification of 50*50*50cm. A 20cm circular hole was set in the center of adjacent areas to connect them. The heights of the mosquito cages were 75cm and 150cm from the ground respectively.

[0058] The tester stood close to the wall at 1.5 meters from the center of the horizontal wall, sprayed the aerosol at an angle of 45 degrees upward for 5 seconds, and then closed the room for 15 minutes and then opened the window for ventilation for 20 minutes. 50 mosquitoes were placed in the mosquito control area, and the number of mosquitoes in the observation area was observed within 60 minutes to evaluate the continuous mosquito repellent effect after aerosol spraying. The mosquito repellent performance was evaluated by comparing the mosquito repellent effect of the aerosol after using the same method and conditions.

[0059] The test results are shown in Table 2: Test results of mosquito repellent effect of Example 1 and Comparative Example 1, Table 3: Test results of mosquito repellent effect of Example 2 and Comparative Example 2, and Table 4: Test results of mosquito repellent effect of Example 3 and Comparative Example 3. The test results of Examples 1 to 3 show that after 15 minutes of aerosol spraying and 20 minutes of ventilation, most of the test insects in the hanging cage test were repelled to the observation area, showing good repellent persistence.

[0060] Table 2: Test data of mosquito repellent effect of Example 1 and Comparative Example 1

[0061]

[0062]

[0063] Table 3: Test results of mosquito repellent effects of Example 2 and Comparative Example 2

[0064]

[0065] Table 4: Test results of mosquito repellent effects of Example 3 and Comparative Example 3

[0066]

[0067]

[0068] A 12-meter-long square lawn was selected in Guangzhou Yuntai Garden, and 6 identical tents were used, of which 3 tents were set at a distance of 3 meters for testing the embodiment, and the other 3 tents were set parallel to the embodiment test tents at a distance of 4 meters, and the distance between the comparative test tents was also 3 meters. At 8 pm under clear and windless weather conditions, after spraying equal amounts of Examples 1 to 3 and Comparative Examples 1 to 3 on the corresponding tents, the windows of the 6 tents were opened in the same direction; at 8 am the next day, the windows of each tent were closed, and the number of mosquitoes in each tent was counted and recorded.

[0069] Table 5: On-site repellent effect of the embodiments and comparative examples on mosquitoes

[0070] sample Number of mosquitoes knocked down, only Number of mosquitoes living in the area, Total number of mosquitoes flying in, only Example 1 30 10 40 Example 2 27 7 34 Example 3 19 3 22 Comparative Example 1 52 38 90 Comparative Example 2 50 30 80 Comparative Example 3 56 33 89

[0071] As shown in Tables 2 to 5, the insecticidal aerosol composition according to the embodiment of the present invention exhibits a better repellent effect than the comparative example at different positions and heights in the test space after spraying, which reflects the repellent effect of phytoncide on mosquitoes after high volatility and drift. Therefore, the insecticidal aerosol composition according to the embodiment of the present invention is distributed on the indoor floor and wall through the liquid medicine settled after spraying, and the phytoncide is diffused through its volatility and air disturbance, thereby producing a better effect of repelling mosquitoes.

[0072] Figure 1 It is a schematic diagram of the retention appearance of the insecticide aerosols of Examples 1 to 3 of the present invention and Comparative Examples 1 to 3 after spraying on ceramic tiles. Figure 2 It is a schematic diagram of the retention appearance of the insecticide aerosols of Examples 1 to 3 of the present invention and Comparative Examples 1 to 3 after spraying on a wooden floor. Figure 3 It is a schematic diagram of the retention appearance of the insecticide aerosols of Examples 1 to 3 of the present invention and Comparative Examples 1 to 3 after spraying on cement ground.

[0073] Reference Figures 1 to 3 , spray the above-mentioned examples and comparative examples in equal amounts on a flat surface (e.g. Figure 1 The tile surface shown, Figure 2 The wooden floor surface shown and Figure 3 The schematic diagram of the retention appearance after the sample spraying clearly shows that the residual amount of the embodiment is lower, and it basically leaves no visual traces after the water evaporates. This is because the low-dosage nonionic surfactant solubilizer in the insecticide aerosol according to the embodiment of the present invention produces a small amount of foam after spraying, and the small amount of propane, butane and nonionic surfactant coated in the foam spreads so that the foam breaks, and the agent is volatilized for the second time, thereby reducing its residual on the plane.

[0074] In summary, according to the insecticidal aerosol composition and its preparation method of the embodiment of the present invention, phytoncide, insecticidal active ingredients, spreading penetrant, deionized water and propane are made into an emulsion system, which can effectively solve the shortcomings of the oily system; when used, it solves the problem of the plane residue of the agent and the bad odor when used, and achieves a certain sense of freshness. At the same time, the low foaming property of the non-ionic surfactant can be used to rupture the foam after the aerosol is sprayed to perform secondary assisted diffusion of the agent components, so that more agents can be diffused multiple times and then settled, thereby achieving the insecticidal active ingredients in a larger range to have a knockdown and lethal effect on pests, and the floating diffusion of phytoncide can achieve a mosquito repellent effect.

[0075] The insecticidal aerosol of the present invention provides an insecticidal aerosol containing phytoncide and a preparation method thereof. One beneficial effect of the present invention is that the high volatility of phytoncide produces a certain repellent effect on pests, thereby reducing the phenomenon of using mosquito coils again that night after using the insecticidal aerosol; another beneficial effect of the present invention is that the low-residue and easy-spreading characteristics of the present invention are utilized to promote the secondary volatilization of phytoncide, thereby changing the difficult problem of the agent being embedded and residual.

[0076] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. The present invention is intended to cover any variations, uses or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not disclosed by the present invention. The description and examples are to be considered exemplary only, and the true scope and spirit of the present invention is indicated by the claims.

[0077] It should be understood that the present invention is not limited to the precise construction that has been described above and that various modifications and changes may be made without departing from its scope. The scope of the present invention is limited only by the appended claims.

Claims

1. An insecticide aerosol composition, characterized in that: The insecticide aerosol composition comprises the following components by weight percentage: 0.2% to 15% insecticide active ingredient; 0.001%~1.5% phytoncide; 0.1% to 1% spreading penetrant; 0.05-0.3% solubilizer; 1-5% cosolvent; 40% to 50% propellant; The balance was deionized water.

2. The insecticidal aerosol composition according to claim 1, characterized in that The phytoncide includes at least one of thujacene, sabinene, camphene, myrcene, limonene, cymene and linalyl acetate.

3. The insecticidal aerosol composition according to claim 2, characterized in that: By weight percentage, the phytoncide comprises the following components: 0.01% to 0.5% thujacene; 0.1% to 10% sabinene; 1% to 5% camphene; 1% to 10% myrcene; 1% to 10% limonene; 30% to 50% cymene; 20% to 55% linalyl acetate; wherein the sum of the weight percentages of all components is 100%.

4. The insecticidal aerosol composition according to claim 1, characterized in that The insecticidal active ingredient comprises at least one of permethrin, d-trans-prallethrin, d-phenothrin, dinotefuran, thiamethoxam and chlorantraniliprole.

5. The insecticidal aerosol composition according to claim 1, characterized in that: The spreading penetrant includes 1-dodecylazacycloheptane-2-one and piperonyl butoxide, wherein the weight ratio of the 1-dodecylazacycloheptane-2-one to the piperonyl butoxide is 0.5:1 to 3:

1.

6. The insecticidal aerosol composition according to claim 1, characterized in that: The solubilizer includes at least one of fatty acid diglycerides, sucrose fatty acid esters, fatty alcohol polyoxyethylene ethers, sorbitan isostearate, polyoxyethylene fatty acid esters and polyoxyethylene-polyoxypropylene copolymers.

7. The insecticidal aerosol composition according to claim 1, characterized in that: The co-solvent includes at least one of 3-methoxy-3-methyl-1-butanol, isopropanol and propylene glycol.

8. The insecticidal aerosol composition according to claim 1, characterized in that: The propellant is a mixture of propane and butane, wherein the weight ratio of the propane to the butane is 1:3 to 1:

4.

9. A method for preparing the insecticide aerosol composition according to any one of claims 1 to 8, characterized in that: The production method comprises: Step S1, preparing a phytoncide solution; Step S2, mixing the insecticidal active ingredient, the spreading penetrant, the solubilizer, the cosolvent and the phytoncide solution and stirring them uniformly, and adding deionized water thereto under stirring to obtain an emulsion-like liquid; Step S3, loading the emulsion into a can body, sealing the can body, and then filling it with a propellant.

10. The manufacturing method according to claim 9, characterized in that: The step S1 specifically comprises: adding linalyl acetate into a batching kettle, and then sequentially adding thujacene, sabinene, camphene, myrcene, limonene and cymene into the batching kettle for mixing, stirring evenly and sealing and aging for 24 hours to obtain the phytoncide solution.

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