Quick-burning mosquito-repelling incense and preparation method thereof

Abstract

The invention discloses quick-burning mosquito-repellent incense and a preparation method thereof. The quick-burning mosquito-repellent incense is prepared from, by weight, 0.03%-0.5% of a component A, 0.5%-8% of a component B, 50%-95% of a combustion improver, 2%-35% of an adhesive and 0.01%-10% of other auxiliaries. After the incense is prepared, the incense is ignited for 10-30 minutes, the effect lasts for 24 hours, the use efficiency is higher, and the mosquito repelling effect is obvious. The component A is a compound as shown in a formula (I); and the component B is a solvent. # imgabs0 #

Description

[0001] This application is a divisional application of a Chinese invention patent application. The original application date was August 10, 2022, with the application number: 202210953608.0, the invention title: A rapid - burning mosquito - repellent incense and its preparation method, and the publication number: CN

[0002] 117617262A; The applicant filed a divisional application. Technical Field

[0003] The present invention relates to a mosquito coil, specifically to a rapid - burning mosquito - repellent incense and its preparation method, which only takes 10 - 30 minutes to complete the entire combustion process and can form a mosquito - repellent effect lasting up to 24 hours. Background Art

[0004] The pyrethroid compound shown in Formula I is a novel hygienic insecticide with good basic activity for controlling hygienic pests; the pyrethroid compound shown in Formula I can be prepared according to the following reaction route:

[0005]

[0006] Wherein R is methyl or ethyl, M is sodium or potassium, and R1 is hydrogen.

[0007] For example, using methyl 3 - formyl - 2,2 - dimethylcyclopropanecarboxylate (CAS No. 62138 - 41 - 4) as the starting material, it undergoes a condensation reaction with acetonitrile at 60 °C under the action of sodium ethoxide for 4 hours, adding dilute hydrochloric acid to neutralize the pH to 8, adding ethyl acetate and water for liquid separation, and the oil layer is desolvated to obtain the intermediate methyl 3 - (2 - cyano - 1 - vinyl) - 2,2 - dimethylcyclopropanecarboxylate.

[0008] To the obtained methyl 3 - (2 - cyano - 1 - vinyl) - 2,2 - dimethylcyclopropanecarboxylate, add 2,3,5,6 - tetrafluorobenzyl alcohol (CAS No. 4084 - 38 - 2), a catalytic amount of titanium tetraisopropoxide, and toluene as a solvent, slowly heat up to reflux to distill out the by - product methanol, control in gas phase. After the raw materials are completely converted, cool down to 0 - 5 °C, dropwise add a small amount of water, perform liquid separation, and desolvate to obtain the pyrethroid compound of Formula I.

[0009] Starting from cyclopropanecarboxylates with different single configurations, pyrethroid compounds of formula I with corresponding configurations can be obtained. For example, starting from methyl (1R,3R)-3-formyl-2,2-dimethylcyclopropanecarboxylate (CAS No. 27335-33-7), the product with 1R, 3R in the chrysanthemic acid part is obtained. After fractional crystallization and separation of the double bond CN group Z,E isomers, a single 2,3,5,6-tetrafluorobenzyl-(1R,3R)-3-[(1Z)-2-cyano-1-ethenyl]-2,2-dimethylcyclopropanecarboxylate or 2,3,5,6-tetrafluorobenzyl-(1R,3R)-3-[(1E)-2-cyano-1-ethenyl]-2,2-dimethylcyclopropanecarboxylate can be obtained. Starting from methyl (1R,3S)-3-formyl-2,2-dimethylcyclopropanecarboxylate (CAS No. 55701-02-5), 2,3,5,6-tetrafluorobenzyl-(1R,3S)-3-(-2-cyano-1-ethenyl)-2,2-dimethylcyclopropanecarboxylate or 2,3,5,6-tetrafluorobenzyl-(1R,3S)-3-[(1Z)-2-cyano-1-ethenyl]-2,2-dimethylcyclopropanecarboxylate or 2,3,5,6-tetrafluorobenzyl-(1R,3S)-3-[(1E)-2-cyano-1-ethenyl]-2,2-dimethylcyclopropanecarboxylate can be obtained.

[0010] The coil mosquito-repellent incense on the current market needs to burn for about 8 hours. Long-time burning will produce large amounts of smoke and odor, which not only brings an unpleasant product use experience to people, but also poses a long-time fire hazard. In order to improve the disadvantages of traditional mosquito-repellent incense formulations and enhance the use experience, the present invention provides a fast-burning mosquito-repellent incense that releases active ingredients within a short time to achieve a mosquito-repellent effect. This places higher requirements on the safety of the active ingredients. Therefore, the compound of formula I is preferably used in this product. The acute oral toxicity rating of the compound of formula I is slightly toxic, and its safety is superior to products with tetrafluoromethylethyl pyrethrate, transfluthrin, etc. as active ingredients on the market, and it is more suitable for the preparation of fast-burning mosquito-repellent incense. Moreover, this product has a small weight, burns quickly, simultaneously reduces the use of solvents significantly, has an obvious carbon reduction effect, and has a long-lasting effect. Summary of the Invention

[0011] The technical problem to be solved by the present invention is to provide a fast-burning mosquito-repellent incense and its preparation method in view of the deficiencies in the prior art. The mosquito-repellent incense of the present invention can burn completely within a short time.

[0012] To achieve the above object, the present invention adopts the following technical solutions:

[0013] A quick-burning mosquito-repellent incense, by weight, contains 0.03%-0.5% of component A, 0.5%-8% of component B, 50%-95% of a combustion aid, 2%-35% of an adhesive, and 0.01%-10% of other additives;

[0014] The component A is a compound represented by formula (I), that is, 2,3,5,6-tetrafluorobenzyl 3-[-2-cyano-1-ethenyl]-2,2-dimethylcyclopropyl carboxylate;

[0015] The component B is a solvent;

[0016]

[0017] In the above technical solution, the component A shown is preferably selected from any one or two or more of 2,3,5,6-tetrafluorobenzyl-(1R,3S)-3-[(1Z)-2-cyano-1-ethenyl]-2,2-dimethylcyclopropyl carboxylate, 2,3,5,6-tetrafluorobenzyl-(1S,3R)-3-[(1Z)-2-cyano-1-ethenyl]-2,2-dimethylcyclopropyl carboxylate, 2,3,5,6-tetrafluorobenzyl-(1R,3R)-3-[(1Z)-2-cyano-1-ethenyl]-2,2-dimethylcyclopropyl carboxylate, 2,3,5,6-tetrafluorobenzyl-(1S,3S)-3-[(1Z)-2-cyano-1-ethenyl]-2,2-dimethylcyclopropyl carboxylate, and is a mixture formed by mixing in any proportion.

[0018] In the above technical solution, the component A is further preferably 2,3,5,6-tetrafluorobenzyl-(1R,3S)-3-[(1Z)-2-cyano-1-ethenyl]-2,2-dimethylcyclopropyl carboxylate.

[0019] In the above technical solution, the component B is selected from amide solvents, monocarboxylic acid ester solvents, tricarboxylic acid ester solvents, alcohol ether solvents, C8-20 alkane solvents; water; dodecylbenzene, decylbenzene; C2-8 alcohol solvents; propylene carbonate, butylene carbonate, sorbitan monooleate, fatty alcohol and ethylene oxide condensate, γ-butyrolactone, ethyl alkyl ethoxy ester, dipropylene glycol methyl ether acetate, a compound represented by formula (II), a compound represented by formula (III), a compound represented by formula (IV), and is a mixture formed by mixing any one or two or more of them in any proportion;

[0020]

[0021] wherein R1, R2, and R3 are all C1-C10 alkyl groups.

[0022] In the above technical solution, the amide solvent is preferably N,N-dimethyldecanamide.

[0023] In the above technical solution, the monocarboxylic acid ester solvent is preferably any one or a mixture of two or more of methyl oleate, isopropyl tridecanoate, isopropyl myristate, isopropyl palmitate, isopropyl phenylacetate, ethyl phenylacetate, and n-butyl myristate in any proportion.

[0024] In the above technical solution, the tricarboxylic acid ester solvent is preferably any one or a mixture of two or more of diisopropyl glutarate, diisopropyl adipate, diisobutyl adipate and other dicarboxylic acid ester solvents; tributyl citrate, acetyl tributyl citrate in any proportion.

[0025] In the above technical solution, the alcohol ether solvent is preferably any one or a mixture of two or more of triethylene glycol monobutyl ether, diethylene glycol monobutyl ether, and propylene glycol methyl ether in any proportion.

[0026] In the above technical solution, the C8-20 alkane solvent is preferably any one, two or a mixture of two or more of D60 (ExxonMobil Chemical Company), D80 (ExxonMobil Chemical Company), D100 (ExxonMobil Chemical Company), D110 (ExxonMobil Chemical Company), D130 (ExxonMobil Chemical Company), Isopar-E (ExxonMobil Chemical Company), Isopar-G (ExxonMobil Chemical Company), Isopar-H (ExxonMobil Chemical Company), Isopar-L (ExxonMobil Chemical Company), Isopar-M (ExxonMobil Chemical Company), octane, nonane, quane, undecane, dodecane, tridecane, tetradecane, pentadecane, hexadecane in any proportion.

[0027] In the above technical solution, the C2-8 alcohol solvent is preferably any one, two or a mixture of two or more of ethanol, isopropyl alcohol, n-propanol, n-butanol, sec-butanol, tert-butanol, n-pentanol and its isomers, n-hexanol and its isomers, n-heptanol and its isomers, n-octanol and its isomers in any proportion.

[0028] In the above technical solution, the combustion improver is selected from plant dry powder and / or carbon powder; the plant dry powder is preferably any one or a mixture of two or more of wood powder, Compositae plant powder, Umbelliferae plant powder, Moraceae plant powder, Oleaceae plant powder, Labiatae plant powder, Caprifoliaceae plant powder, Gramineae plant powder in any proportion; the carbon powder is preferably any one or a mixture of two or more of charcoal, activated carbon, coal, carbon black in any proportion.

[0029] In the above technical solution, the binder is preferably any one or a mixture of two or more of sodium carboxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, gum arabic, sodium alginate, corn starch, tab powder, polyacrylamide, sodium polyacrylate, polyethylene oxide in any proportion.

[0030] In the above technical solution, the other additives include spices, dyes, preservatives.

[0031] In the above technical solution, the spice is selected from essential oil and / or plant extract; the essential oil is preferably any one, two or more of rose oil, lavender oil, sweet orange oil in any proportion; the plant extract is preferably any one, two or more of osmanthus extract, jasmine extract, tuberose extract in any proportion.

[0032] In the above technical solution, the dye is selected from any one of different color systems.

[0033] In the above technical solution, the preservative is selected from any one, two or more of sodium benzoate, sodium dehydroacetate, potassium sorbate, methyl paraben or kathon in any proportion.

[0034] The present invention also provides a preparation method of the above-mentioned quick-burning mosquito-repellent incense. The combustion improver, binder and other additives are mixed evenly according to the above proportion, then water is added and kneaded into shape, and then dried to form an incense base material. Then, component A and component B in the above proportion are mixed until clear at room temperature (or heated below the boiling point of the solvent), and finally sprayed onto the incense base material to obtain the above-mentioned quick-burning mosquito-repellent incense.

[0035] In the above technical solution, the weight of the incense base material is 1-10 g, and the shape is fan-shaped, rhombic, triangular, elliptical, irregular shape, etc.

[0036] Compared with the prior art, it has the following characteristics:

[0037] The quick-burning mosquito-repellent incense of the present invention can complete the whole combustion process in only 10-30 minutes, and can form a mosquito-repellent effect for up to 24 hours after combustion. Detailed Embodiments

[0038] The following is a detailed description of the specific embodiments of the technical solution of the present invention, but the present invention is not limited to the following description:

[0039] The preparation method of the fast-burning mosquito-repellent incense in each embodiment of the present invention is as follows: The combustion aid, binder, and other auxiliaries are mixed evenly in proportion, then water is added and kneaded into shape, and then dried to form an incense base material. The components A and B in the above proportion are mixed to clarity at room temperature (or heated below the boiling point of the solvent) and then sprayed onto the above base material to obtain the fast-burning mosquito-repellent incense.

[0040] The following is an elaboration of the present invention in combination with specific embodiments:

[0041] Formulation Example 1: (0.03% Compound of Formula I Mosquito-Repellent Incense, Total Weight 10 g)

[0042] 1.5 g of 2,3,5,6-tetrafluorobenzyl 3-[(1Z)-2-cyano-1-ethenyl]-2,2-dimethylcyclopropanecarboxylate (each of the four isomers (1R,3S), (1S,3R), (1R,3R), (1S,3S) accounts for 25%), and isopropyl myristate is added to make up to 100 g to obtain a 1.5% mother liquor;

[0043] Water is added to a mixture of 1.5 g of corn starch, 3.5 g of activated carbon powder, 4.5 g of Moraceae plant powder, 0.1 g of osmanthus extract, 0.1 g of sodium benzoate, and 0.1 g of blue dye, and kneaded into shape, and then dried to form an incense base material;

[0044] 0.2 g of the above mother liquor is taken and sprayed onto the above incense base material.

[0045] Formulation Example 2: (0.05% Compound of Formula I Mosquito-Repellent Incense, Total Weight 6 g)

[0046] 1.5 g of 2,3,5,6-tetrafluorobenzyl (1R,3S)-3-[(1Z)-2-cyano-1-ethenyl]-2,2-dimethylcyclopropanecarboxylate, and isopropyl myristate is added to make up to 100 g to obtain a 1.5% mother liquor;

[0047] Water is added to a mixture of 0.5 g of tabu powder, 2 g of charcoal powder, 3 g of Compositae plant powder, 0.1 g of osmanthus extract, 0.1 g of sodium benzoate, and 0.1 g of blue dye, and kneaded into shape, and then dried to form an incense base material;

[0048] 0.2 g of the above mother liquor is taken and sprayed onto the above incense base material.

[0049] Formulation Example 3: (0.06% 2,3,5,6 - tetrafluorobenzyl-(1R,3S)-3-[(1Z)-2-cyano-1-ethenyl]-2,2-dimethylcyclopropyl carboxylate mosquito repellent incense, total weight 4 g)

[0050] 1.2 g of 2,3,5,6 - tetrafluorobenzyl-(1R,3S)-3-[(1Z)-2-cyano-1-ethenyl]-2,2-dimethylcyclopropyl carboxylate was made up to 100 g with isopropyl myristate to obtain a 1.2% mother liquor;

[0051] Water was added to a mixture of 0.3 g of sodium carboxymethylcellulose, 1.4 g of charcoal powder, 1.8 g of rice plant powder, 0.1 g of osmanthus extract, 0.1 g of sodium benzoate, and 0.1 g of green dye, and it was kneaded into shape and then dried to form an incense base material;

[0052] 0.2 g of the above mother liquor was sprayed onto the above incense base material.

[0053] Formulation Example 4: (0.08% 2,3,5,6 - tetrafluorobenzyl-(1R,3S)-3-[(1Z)-2-cyano-1-ethenyl]-2,2-dimethylcyclopropyl carboxylate mosquito repellent incense, total weight 5 g)

[0054] 2 g of 2,3,5,6 - tetrafluorobenzyl-(1R,3S)-3-[(1Z)-2-cyano-1-ethenyl]-2,2-dimethylcyclopropyl carboxylate was made up to 100 g with isopropyl myristate to obtain a 2% mother liquor;

[0055] Water was added to a mixture of 0.5 g of tabu powder, 1.5 g of carbon black powder, 2.5 g of celery plant powder, 0.1 g of lavender oil, 0.1 g of sodium benzoate, and 0.1 g of blue dye, and it was kneaded into shape and then dried to form an incense base material;

[0056] 0.2 g of the above mother liquor was sprayed onto the above incense base material.

[0057] Formulation Example 5: (0.09% 2,3,5,6 - tetrafluorobenzyl-(1R,3S)-3-[(1Z)-2-cyano-1-ethenyl]-2,2-dimethylcyclopropyl carboxylate mosquito repellent incense, total weight 5 g)

[0058] 2.25 g of 2,3,5,6 - tetrafluorobenzyl-(1R,3S)-3-[(1Z)-2-cyano-1-ethenyl]-2,2-dimethylcyclopropyl carboxylate was made up to 100 g with isopropyl myristate to obtain a 2.25% mother liquor;

[0059] Water was added to a mixture of 0.5 g of gum arabic, 2 g of charcoal powder, 2 g of Compositae plant powder, 0.1 g of lavender oil, 0.1 g of sodium benzoate, and 0.1 g of blue dye, and the mixture was kneaded into shape and then dried to form an incense base material;

[0060] 0.2 g of the above mother liquor was sprayed onto the above incense base material.

[0061] Formulation Example 6: (0.1% 2,3,5,6-tetrafluorobenzyl-(1R,3S)-3-[(1Z)-2-cyano-1-ethenyl]-2,2-dimethylcyclopropyl carboxylate mosquito repellent incense, total weight 5 g)

[0062] 2.5 g of 2,3,5,6-tetrafluorobenzyl-(1R,3S)-3-[(1Z)-2-cyano-1-ethenyl]-2,2-dimethylcyclopropyl carboxylate was made up to 100 g with isopropyl myristate to obtain a 2.5% mother liquor;

[0063] Water was added to a mixture of 0.5 g of gum arabic, 1.5 g of carbon black powder, 2.5 g of Gramineae plant powder, 0.1 g of osmanthus extract, 0.1 g of sodium benzoate, and 0.1 g of green dye, and the mixture was kneaded into shape and then dried to form an incense base material;

[0064] 0.2 g of the above mother liquor was sprayed onto the above incense base material.

[0065] Formulation Example 7: (0.15% 2,3,5,6-tetrafluorobenzyl-(1R,3S)-3-[(1Z)-2-cyano-1-ethenyl]-2,2-dimethylcyclopropyl carboxylate mosquito repellent incense, total weight 5 g)

[0066] 3.75 g of 2,3,5,6-tetrafluorobenzyl-(1R,3S)-3-[(1Z)-2-cyano-1-ethenyl]-2,2-dimethylcyclopropyl carboxylate was made up to 100 g with isopropyl myristate to obtain a 3.75% mother liquor;

[0067] Water was added to a mixture of 0.5 g of gum arabic, 2 g of charcoal powder, 2 g of Compositae plant powder, 0.1 g of osmanthus extract, 0.1 g of sodium benzoate, and 0.1 g of blue dye, and the mixture was kneaded into shape and then dried to form an incense base material;

[0068] 0.2 g of the above mother liquor was sprayed onto the above incense base material.

[0069] Formulation Example 8: (0.2% 2,3,5,6-tetrafluorobenzyl-(1R,3S)-3-[(1Z)-2-cyano-1-ethenyl]-2,2-dimethylcyclopropyl carboxylate mosquito repellent incense, total weight 5 g)

[0070] 5g of 2,3,5,6 - tetrafluorobenzyl - (1R,3S) - 3 - [(1Z) - 2 - cyano - 1 - vinyl] - 2,2 - dimethylcyclopropyl carboxylate, made up to 100g with isopropyl myristate to obtain a 5% mother liquor;

[0071] Add water to a mixture of 0.5g of corn starch, 1.5g of activated carbon powder, 2.5g of rice plant powder, 0.1g of jasmine extract, 0.1g of sodium benzoate, and 0.1g of blue dye, knead into shape, and then dry to form an incense base material;

[0072] Take 0.2g of the above mother liquor and spray it onto the above incense base material.

[0073] Formulation Example 9: (0.4% 2,3,5,6 - tetrafluorobenzyl - (1R,3S) - 3 - [(1Z) - 2 - cyano - 1 - vinyl] - 2,2 - dimethylcyclopropyl carboxylate mosquito - repellent incense, total weight 5g)

[0074] 10g of 2,3,5,6 - tetrafluorobenzyl - (1R,3S) - 3 - [(1Z) - 2 - cyano - 1 - vinyl] - 2,2 - dimethylcyclopropyl carboxylate, made up to 100g with isopropyl myristate to obtain a 10% mother liquor;

[0075] Add water to a mixture of 0.5g of corn starch, 1.5g of activated carbon powder, 2.5g of rice plant powder, 0.1g of jasmine extract, 0.1g of sodium benzoate, and 0.1g of brown dye, knead into shape, and then dry to form an incense base material;

[0076] Take 0.2g of the above mother liquor and spray it onto the above incense base material.

[0077] Formulation Example 10: (0.5% 2,3,5,6 - tetrafluorobenzyl - (1R,3S) - 3 - [(1Z) - 2 - cyano - 1 - vinyl] - 2,2 - dimethylcyclopropyl carboxylate mosquito - repellent incense, total weight 5g)

[0078] 12.5g of 2,3,5,6 - tetrafluorobenzyl - (1R,3S) - 3 - [(1Z) - 2 - cyano - 1 - vinyl] - 2,2 - dimethylcyclopropyl carboxylate, made up to 100g with isopropyl myristate to obtain a 12.5% mother liquor;

[0079] Add water to a mixture of 0.5g of gum arabic, 2g of charcoal powder, 2g of celery plant powder, 0.1g of osmanthus extract, 0.1g of sodium benzoate, and 0.1g of blue dye, knead into shape, and then dry to form an incense base material;

[0080] Take 0.2g of the above mother liquor and spray it onto the above incense base material.

[0081] Formulation Example 11: (0.5% 2,3,5,6-tetrafluorobenzyl 3-[-2-cyano-1-ethenyl]-2,2-dimethylcyclopropyl carboxylate mosquito repellent incense, total weight 5 g)

[0082] 12.5 g of 2,3,5,6-tetrafluorobenzyl 3-[-2-cyano-1-ethenyl]-2,2-dimethylcyclopropyl carboxylate was made up to 100 g with isopropyl myristate to obtain a 12.5% mother liquor;

[0083] Water was added to a mixture of 0.5 g of gum arabic, 2 g of charcoal powder, 2 g of umbelliferae plant powder, 0.1 g of osmanthus extract, 0.1 g of sodium benzoate, and 0.1 g of blue dye, and kneaded into shape, then dried to form an incense base material;

[0084] 0.2 g of the above mother liquor was sprayed onto the above incense base material.

[0085] Comparative Example 1: Commercially available 0.03% d-trans allethrin coil

[0086] Test Example 1:

[0087] The fast-burning mosquito coils were subjected to a efficacy comparison according to "GBT 13917.4-2009 Pesticide registration for household insecticides - Indoor efficacy test and evaluation - Part 4: Mosquito coils". A cylindrical device was used. 30 test mosquitoes were sucked in and placed through the central round hole of the original plate (F) below the cylinder, and the rubber stopper (H) was tightened. After the test mosquitoes returned to normal activity, a section of the mosquito coil to be tested was randomly taken and horizontally placed on the mosquito coil rack. After pre-igniting for 5 min at another place, it was moved into the cylinder for fumigation for 1 min, and then the mosquito coil was immediately removed, the rubber stopper (H) was plugged, and the time was recorded. The number of knocked-down test insects was recorded at regular intervals. The observation time limit was 20 min. The test should be repeated three times or more, and the mosquito coils used in the repeated tests should be randomly selected. After each test, the test device should be cleaned. The test results are shown in the following table:

[0088] Mosquito-repellent incense Concentration w / w Culex pipiens pallens KT50 (min) Formulation Example 1 0.03 3′16″ Formulation Example 2 0.05 3′45″ Formulation Example 3 0.06 2′53″ Formulation Example 4 0.08 2′36″ Formulation Example 5 0.09 2′27″ Formulation Example 6 0.1 2′23″ Formulation Example 7 0.15 2′19″ Formulation Example 8 0.2 2′05″ Formulation Example 9 0.4 1′44″ Formulation Example 10 0.5 1′37″ Formulation Example 11 0.5 2′05″ Comparative Example 1 0.03 4′36″

[0089] Test Example 2:

[0090] Referring to "GB / T 13917.10-2009 Pesticide registration for household insecticides - Indoor efficacy test and evaluation - Part 10: Simulated field", the mosquito coil samples were placed in the center of the floor of the simulated room. 100 test mosquitoes were placed at the 8th h, 16th h, and 24th h after ignition respectively, and the time was recorded. The number of knocked-down test insects was recorded at regular intervals. The observation time limit was 1 h. The test should be repeated three times or more, and the mosquito coils used in the repeated tests should be randomly selected. After each test, the test device should be cleaned. The test results are shown in the following table:

[0091]

[0092] The above examples are only for illustrating the technical concept and features of the present invention, and shall not be used to limit the protection scope of the present invention. Any equivalent transformation or modification made according to the essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A fast-burning mosquito-repellent incense, characterized in that, By weight, it contains 0.03%-0.5% of component A, 0.5%-8% of component B, 50%-95% of combustion promoter, 2%-35% of binder, and 0.01%-10% of other additives; The component A is the compound shown in formula (I), namely 2,3,5,6-tetrafluorobenzyl-3-[-2-cyano-1-ethenyl]-2,2-dimethylcyclopropyl carboxylate; The component B is a solvent; 2. The quick-burning mosquito-repellent incense according to claim 1, characterized in that, The component A shown is preferably selected from any one or a mixture of two or more of the four isomers of 2,3,5,6-tetrafluorobenzyl-(1R,3S)-3-[(1Z)-2-cyano-1-ethenyl]-2,2-dimethylcyclopropyl carboxylate, 2,3,5,6-tetrafluorobenzyl-(1S,3R)-3-[(1Z)-2-cyano-1-ethenyl]-2,2-dimethylcyclopropyl carboxylate, 2,3,5,6-tetrafluorobenzyl-(1R,3R)-3-[(1Z)-2-cyano-1-ethenyl]-2,2-dimethylcyclopropyl carboxylate, and 2,3,5,6-tetrafluorobenzyl-(1S,3S)-3-[(1Z)-2-cyano-1-ethenyl]-2,2-dimethylcyclopropyl carboxylate in any proportion.

3. The quick-burning mosquito-repellent incense according to claim 1, characterized in that, The component B is selected from amide solvents, monocarboxylate solvents, tricarboxylate solvents, alcohol ether solvents, C8-20 alkane solvents; dodecylbenzene, decylbenzene; C2-8 alcohol solvents; propylene carbonate, butylene carbonate, sorbitan monooleate, fatty alcohol and ethylene oxide condensate, γ-butyrolactone, ethyl ethoxyester, dipropylene glycol methyl ether acetate, the compound shown in formula (II), the compound shown in formula (III), the compound shown in formula (IV), or a mixture of any one or two or more of them in any proportion; Wherein R1, R2, and R3 are all C1-C10 alkyl groups.

4. The quick-burning mosquito-repellent incense according to claim 1, characterized in that, The combustion promoter is selected from plant dry powder and / or carbon powder; the plant dry powder is selected from any one or a mixture of two or more of wood powder, Compositae plant powder, Umbelliferae plant powder, Moraceae plant powder, Oleaceae plant powder, Labiatae plant powder, Caprifoliaceae plant powder, and Gramineae plant powder in any proportion; the carbon powder is selected from any one or a mixture of two or more of charcoal, activated carbon, coal, and carbon black in any proportion.

5. The quick-burning mosquito-repellent incense according to claim 1, characterized in that, The binder is preferably selected from any one or a mixture of two or more of sodium carboxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, gum arabic, sodium alginate, corn starch, tab powder, polyacrylamide, sodium polyacrylate, and polyethylene oxide in any proportion.

6. The quick-burning mosquito-repellent incense according to claim 1, wherein The other additives include fragrance, dye, and preservative.

7. A method for preparing the quick-burning mosquito-repellent incense according to any one of claims 1-6, characterized in that, The combustion promoter, binder, and other additives are mixed evenly according to the above proportions, then water is added and kneaded into shape, and then dried to form an incense base material. Then, component A and component B in the above proportions are mixed until clear at room temperature or heated below the boiling point of the solvent, and finally sprayed onto the incense base material to obtain the fast-burning mosquito-repellent incense.

8. The preparation method according to claim 7, characterized in that, The described incense base material has a weight of 1-10 g and shapes such as fan-shaped, rhombic, triangular, oval, and irregular shape.

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