Pest repellent and application

Abstract

The invention discloses a pest repellent and application, belongs to the field of household sanitary insecticidal products, and particularly relates to application of a polyol compound in preparation of the pest repellent, and the pest repellent is prepared by mixing the polyol compound with a solvent and water. According to the present invention, the pest repellent is prepared by using the polyol compound having the specific structure as the repelling component, and the polyol compound has the safety, is the common component in cosmetics and drugs, has the same effect with the existing similar mosquito repelling effective component, and can provide the new choice for the existing chemical repelling component.

Description

Technical Field

[0001] The present invention relates to a pest repellent and its application, and specifically relates to a chemical repellent prepared with a polyol compound as an effective substance and capable of effectively inhibiting mosquito infestation, and related applications of the polyol compound and the chemical repellent, and belongs to the field of household sanitary insecticide products. Background Art

[0002] Pest repellent, also known as insect repellent, is a kind of agent that can make pests flee. Although the agent itself is non-toxic and has the effect of killing pests, it has a special smell that can make pests avoid or disperse pests. Repellents are usually produced by plants or artificially synthesized. Among them, plant repellents mainly rely on substances extracted from plants as active ingredients, such as natural citronella oil and lemon eucalyptus oil (PMD). The main ingredients of chemical repellents include DEET, picaridin, and dimethoate. These ingredients are considered to be relatively safe chemical mosquito repellents. For example, DEET is a widely used insecticide with a safe concentration range of 10% to 30%. The mosquito repellent time can reach 4 to 12 hours. It is suitable for children over 2 months old and adults, but the dosage and use time still need to be controlled when using it.

[0003] At present, although plant repellents are favored by some consumers due to their natural ingredients, their mosquito repellent effect is often not as good as chemical repellents. For example, lemon eucalyptus oil is recognized by the U.S. Environmental Protection Agency (EPA) as having a certain mosquito repellent effect, but its effectiveness is only half of DEET. And since it is not clear whether lemon eucalyptus oil is harmful to children under 3 years old, it is not recommended for children under 3 years old. Therefore, in order to ensure the pest repellent effect, it is particularly important to research and develop a safe and non-toxic chemical repellent with a new chemical active ingredient.

[0004] In the prior art, Chinese patent CN1113226031A mentions a pest repellent composition, which includes two components, one is a non-volatile liquid oil component selected from silicone oil, ester oil, ether oil, hydrocarbon oil, aliphatic alcohol and polyol; the other is a repellent component selected from N,N-diethyltoluamide (DEET), 1-methylpropyl-2-(2-hydroxyethyl)-1-piperidinylcarboxylate (icaridin), 3-(acetylbutyl)aminopropionic acid ethyl ester (IR3535) and p-menthane-3,8-diol (PMD). By using oily components such as silicone oil and polyol, the composition can have a good touch when applied to the skin, and at the same time, it can also improve the lasting effect of the repellent in the composition. In addition, Japanese patent JP 6918640 B2 also mentions a pest repellent, which contains pest repellent ingredients including at least one of ethyl 3-[acetylbutylamino]propionate, 2-2-hydroxyethylpiperidine-1-carboxylate, 1-methylpropyl and p-pentane-3-8-diol (PMD), and the viscosity of the pest repellent reaches 10 mPa·s or more by adding a thickener. Summary of the invention

[0005] The purpose of the present invention is to provide a pest repellent and its application, in which a polyol compound with a specific structure is used as a repellent component to prepare the pest repellent. The polyol compound itself is safe and has an effect comparable to that of existing similar mosquito repellent active ingredients, thus providing a new choice for existing chemical repellent ingredients.

[0006] The present invention is achieved by the following technical scheme: application of a polyol compound in the preparation of a pest repellent, mixing the polyol compound with a solvent and water to prepare the pest repellent, wherein the polyol compound is a repellent component, and its structure is shown in the following formula (1):

[0007]

[0008] In formula (1), R1 and R2 are each selected from any one of -CH3, -CH2CH3, -CH2CH2CH3, -CH(CH3)2, -CH2CH2CH2CH3, -CH(CH3)CH2CH3, -CH2CH(CH3)2 or -C(CH3)3.

[0009] The polyol compound is selected from any one of 2,2-dimethyl-1,3-propanediol, 2-methyl-2-ethyl-1,3-propanediol, 2-methyl-2-propyl-1,3-propanediol, 2-methyl-2-butyl-1,3-propanediol, 2,2-diethyl-1,3-propanediol, 2-ethyl-2-propyl-1,3-propanediol, 2-ethyl-2-butyl-1,3-propanediol, 2,2-dipropyl-1,3-propanediol, 2-propyl-2-butyl-1,3-propanediol and 2,2-dibutyl-1,3-propanediol.

[0010] The solvent is selected from any one of ethanol, propylene glycol or butylene glycol.

[0011] The present invention also provides a pest repellent as described above, wherein the pest repellent contains 1 to 30% of polyol compound, 10 to 65% of solvent and 30 to 65% of water in terms of mass percentage.

[0012] The present invention also provides the use of the above-mentioned pest repellent in the preparation of smearable mosquito repellent products, wherein the mosquito repellent products include mosquito repellent liquid, mosquito repellent floral water, mosquito repellent lotion and mosquito repellent cream.

[0013] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0014] (1) The present invention is the first to use a polyol compound of a specific structure in a pest repellent. By mixing the polyol compound with a solvent and water, the polyol compound can exert a mosquito repellent effect on mosquitoes, and has a mosquito repellent effect comparable to that of existing similar mosquito repellent ingredients (such as menthyl glycol, chlorpyrifos, etc.), thereby expanding the diversity of repellent ingredient selection in current chemical repellents.

[0015] (2) The present invention uses a polyol compound with a specific structure as a repellent component because the hydroxyl groups in its molecular structure can form a stable hydrogen bond network, usually have high thermal stability and chemical stability, and are very safe. They are common ingredients in cosmetics, medicines, and industrial raw materials.

[0016] (3) The present invention uses a polyol compound with a specific structure as a mosquito repellent component. The mosquito repellent test of the polyol compound can prove that according to the test method of GB / T13917.9, one hand presses 1.5 μL / cm 2 The sample to be tested was evenly smeared with a certain dosage, which had mosquito repellent effect under different concentration conditions. The mosquito repellent duration increased with the increase of concentration, which was comparable to the effect of existing similar mosquito repellent active ingredients.

[0017] (4) The present invention uses a polyol compound with a specific structure as a repellent component. The mosquito repellent test on the polyol compound can prove that the mosquito repellent time can reach 2.5h to 7.25h under different concentration conditions, which meets the protection time required for outdoor use of mosquito repellent products. DETAILED DESCRIPTION

[0018] The present invention is further described in detail below in conjunction with examples, but the embodiments of the present invention are not limited thereto.

[0019] The percentage concentrations % involved in the following examples are all mass concentrations.

[0020] 1. Examples 1 to 4 are pest repellents prepared using different concentrations of the polyol compound 2,2-dimethyl-1,3-propanediol.

[0021] Embodiment 1:

[0022] Prepare a pest repellent by mixing 50% of 2,2-dimethyl-1,3-propanediol, 30% of ethanol and 20% of purified water.

[0023] Embodiment 2:

[0024] Prepare a pest repellent by mixing 30% of 2,2-dimethyl-1,3-propanediol, 30% of ethanol and 40% of purified water.

[0025] Embodiment 3:

[0026] Prepare a pest repellent by mixing 20% ​​of 2,2-dimethyl-1,3-propanediol, 25% of ethanol and 55% of purified water.

[0027] Example 4: Pest repellent

[0028] Prepare a pest repellent by mixing 15% of 2,2-dimethyl-1,3-propanediol, 20% of ethanol and 65% of purified water.

[0029] 2. Examples 5 to 8 are pest repellents prepared using different concentrations of the polyol compound 2-methyl-2-ethyl-1,3-propanediol.

[0030] Embodiment 5:

[0031] A pest repellent is prepared by mixing 50% of 2-methyl-2-ethyl-1,3-propanediol, 30% of ethanol and 20% of purified water.

[0032] Embodiment 6:

[0033] A pest repellent is prepared by mixing 30% of 2-methyl-2-ethyl-1,3-propanediol, 30% of ethanol and 40% of purified water.

[0034] Embodiment 7:

[0035] A pest repellent is prepared by mixing 20% ​​of 2-methyl-2-ethyl-1,3-propanediol, 25% of ethanol and 55% of purified water.

[0036] Embodiment 8:

[0037] A pest repellent is prepared by mixing 15% of 2-methyl-2-ethyl-1,3-propanediol, 20% of ethanol and 65% of purified water.

[0038] 3. Examples 9 to 12 are pest repellents prepared using different concentrations of the polyol compound 2-methyl-2-propyl-1,3-propanediol.

[0039] Embodiment 9:

[0040] Prepare a pest repellent by mixing 50% of 2-methyl-2-propyl-1,3-propanediol, 30% of propylene glycol and 20% of purified water.

[0041] Embodiment 10:

[0042] Prepare a pest repellent by mixing 30% of 2-methyl-2-propyl-1,3-propanediol, 30% of propylene glycol and 40% of purified water.

[0043] Embodiment 11:

[0044] Prepare a pest repellent by mixing 20% ​​of 2-methyl-2-propyl-1,3-propanediol, 25% of propylene glycol and 55% of purified water.

[0045] Embodiment 12:

[0046] Prepare a pest repellent by mixing 15% of 2-methyl-2-propyl-1,3-propanediol, 20% of propylene glycol and 65% of purified water.

[0047] IV. Examples 13 to 16 are pest repellents prepared using different concentrations of the polyol compound 2-methyl-2-butyl-1,3-propanediol.

[0048] Embodiment 13:

[0049] A pest repellent is prepared by mixing 50% of 2-methyl-2-butyl-1,3-propanediol, 30% of propylene glycol and 20% of purified water.

[0050] Embodiment 14:

[0051] A pest repellent is prepared by mixing 30% of 2-methyl-2-butyl-1,3-propanediol, 30% of propylene glycol and 40% of purified water.

[0052] Embodiment 15:

[0053] Prepare a pest repellent by mixing 20% ​​of 2-methyl-2-butyl-1,3-propanediol, 25% of propylene glycol and 55% of purified water.

[0054] Embodiment 16:

[0055] A pest repellent is prepared by mixing 15% of 2-methyl-2-butyl-1,3-propanediol, 20% of propylene glycol and 65% of purified water.

[0056] V. Examples 17 to 20 are pest repellents prepared using different concentrations of the polyol compound 2,2-diethyl-1,3-propanediol.

[0057] Embodiment 17:

[0058] Prepare a pest repellent by mixing 50% of 2,2-diethyl-1,3-propanediol, 30% of butanediol and 20% of purified water.

[0059] Embodiment 18:

[0060] Prepare a pest repellent by mixing 30% of 2,2-diethyl-1,3-propanediol, 30% of butanediol and 40% of purified water.

[0061] Embodiment 19:

[0062] Prepare a pest repellent by mixing 20% ​​of 2,2-diethyl-1,3-propanediol, 25% of butanediol and 55% of purified water.

[0063] Embodiment 20:

[0064] Prepare a pest repellent by mixing 15% of 2,2-diethyl-1,3-propanediol, 20% of butanediol and 65% of purified water.

[0065] VI. Examples 21 to 24 are pest repellents prepared using different concentrations of the polyol compound 2-ethyl-2-propyl-1,3-propanediol.

[0066] Embodiment 21:

[0067] A pest repellent is prepared by mixing 50% of 2-ethyl-2-propyl-1,3-propanediol, 30% of butanediol and 20% of purified water.

[0068] Embodiment 22:

[0069] A pest repellent is prepared by mixing 30% of 2-ethyl-2-propyl-1,3-propanediol, 30% of butanediol and 40% of purified water.

[0070] Embodiment 23:

[0071] Prepare a pest repellent by mixing 20% ​​of 2-ethyl-2-propyl-1,3-propanediol, 25% of butanediol and 55% of purified water.

[0072] Embodiment 24:

[0073] A pest repellent is prepared by mixing 15% of 2-ethyl-2-propyl-1,3-propanediol, 20% of butanediol and 65% of purified water.

[0074] VII. Examples 25 to 28 are insect repellents prepared using different concentrations of the polyol compound 2-ethyl-2-butyl-1,3-propanediol.

[0075] Embodiment 25:

[0076] A pest repellent is prepared by mixing 50% of 2-ethyl-2-butyl-1,3-propanediol, 30% of ethanol and 20% of purified water.

[0077] Embodiment 26:

[0078] A pest repellent is prepared by evenly mixing 30% of 2-ethyl-2-butyl-1,3-propanediol, 30% of ethanol and 40% of purified water.

[0079] Embodiment 27:

[0080] A pest repellent is prepared by mixing 20% ​​of 2-ethyl-2-butyl-1,3-propanediol, 25% of ethanol and 55% of purified water.

[0081] Embodiment 28:

[0082] A pest repellent is prepared by mixing 15% of 2-ethyl-2-butyl-1,3-propanediol, 20% of ethanol and 65% of purified water.

[0083] 8. Examples 29 to 32 are pest repellents prepared using different concentrations of the polyol compound 2,2-dipropyl-1,3-propanediol.

[0084] Embodiment 29:

[0085] Prepare a pest repellent by mixing 50% of 2,2-dipropyl-1,3-propanediol, 30% of propylene glycol and 20% of purified water.

[0086] Embodiment 30:

[0087] Prepare a pest repellent by mixing 30% of 2,2-dipropyl-1,3-propanediol, 30% of propylene glycol and 40% of purified water.

[0088] Embodiment 31:

[0089] Prepare a pest repellent by mixing 20% ​​of 2,2-dipropyl-1,3-propanediol, 25% of propylene glycol and 55% of purified water.

[0090] Embodiment 32:

[0091] Prepare a pest repellent by mixing 15% of 2,2-dipropyl-1,3-propanediol, 20% of propylene glycol and 65% of purified water.

[0092] IX. Examples 33 to 36 are pest repellents prepared using different concentrations of the polyol compound 2-propyl-2-butyl-1,3-propanediol.

[0093] Embodiment 33:

[0094] A pest repellent is prepared by mixing 50% of 2-propyl-2-butyl-1,3-propanediol, 30% of butanediol and 20% of purified water.

[0095] Embodiment 34:

[0096] A pest repellent is prepared by mixing 30% of 2-propyl-2-butyl-1,3-propanediol, 30% of butanediol and 40% of purified water.

[0097] Embodiment 35:

[0098] A pest repellent is prepared by mixing 20% ​​of 2-propyl-2-butyl-1,3-propanediol, 25% of butanediol and 55% of purified water.

[0099] Embodiment 36:

[0100] A pest repellent is prepared by mixing 15% of 2-propyl-2-butyl-1,3-propanediol, 20% of butanediol and 65% of purified water.

[0101] 10. Examples 37 to 40 are pest repellents prepared using different concentrations of the polyol compound 2,2-dibutyl-1,3-propanediol.

[0102] Embodiment 37:

[0103] A pest repellent is prepared by mixing 50% of 2,2-dibutyl-1,3-propanediol, 30% of ethanol and 20% of purified water.

[0104] Embodiment 38:

[0105] Prepare a pest repellent by mixing 30% of 2,2-dibutyl-1,3-propanediol, 30% of ethanol and 40% of purified water.

[0106] Embodiment 39:

[0107] Prepare a pest repellent by mixing 20% ​​of 2,2-dibutyl-1,3-propanediol, 25% of ethanol and 55% of purified water.

[0108] Embodiment 40:

[0109] A pest repellent is prepared by mixing 15% of 2,2-dibutyl-1,3-propanediol, 20% of ethanol and 65% of purified water.

[0110] XI. Comparative Examples 1 to 4 are control repellents prepared using different concentrations of p-menthyl glycol.

[0111] Comparative Example 1:

[0112] Prepare a pest repellent by mixing 50% of p-menthyl glycol, 45% of ethanol and 5% of purified water.

[0113] Comparative Example 2:

[0114] The pest repellent is prepared by mixing 30% of p-menthyl glycol, 63% of ethanol and 7% of purified water.

[0115] Comparative Example 3:

[0116] Prepare a pest repellent by mixing 20% ​​of p-menthyl glycol, 55% of ethanol and 25% of purified water.

[0117] Comparative Example 4:

[0118] Prepare a pest repellent by mixing 15% of p-menthyl glycol, 50% of ethanol and 35% of purified water.

[0119] 12. Comparative Examples 5 to 8 are control repellents prepared using different concentrations of pyrethroids.

[0120] Comparative Example 5:

[0121] 50% of chlorpyrifos, 30% of ethanol and 20% of purified water are mixed evenly to prepare a pest repellent.

[0122] Comparative Example 6:

[0123] 30% of chlorpyrifos, 30% of ethanol and 40% of purified water are mixed evenly to prepare a pest repellent.

[0124] Comparative Example 7:

[0125] 20% of chlorpyrifos, 25% of ethanol and 55% of purified water are mixed evenly to prepare a pest repellent.

[0126] Comparative Example 8:

[0127] 15% of chlorpyrifos, 20% of ethanol and 65% of purified water are mixed evenly to prepare a pest repellent.

[0128] The insect repellents prepared in Examples 1 to 40 and the control repellents prepared in Comparative Examples 1 to 8 were tested for mosquito repellency effect and duration respectively:

[0129] (1) Test conditions: temperature (26 ± 1) °C, relative humidity 65% ​​± 10%.

[0130] (2) Test insects: Aedes albopictus was provided in accordance with the requirements of CB / T 13917.9-2009 “Indoor efficacy test and evaluation of public health insecticides for registered pesticides Part 9: Repellents” and was provided by our company’s insect breeding room.

[0131] (3) Test equipment and instruments:

[0132] 3.1 Mosquito cage: 300mm long, 300mm wide, 300mm high.

[0133] 3.2 Stopwatch.

[0134] (4) Indoor efficacy test method: According to GB / T 13917.9-2009, the specific method is as follows: select 4 or more testers with qualified attack power (half male and half female, and should not drink alcohol, tea or coffee before and during the test, and should not use products containing fragrances), draw a 50mm×50mm skin area on each of their arms, and press 1.5μL / cm on one hand. 2 Apply the mosquito repellent to be tested evenly with a dose of 100mg / kg, expose 40mm×40mm of the skin, cover the rest tightly, and use the other hand as a blank control. 1 hour after application, put the hand into a mosquito cage with qualified attack power for 2 minutes to observe whether there are mosquitoes coming to land and suck blood. After that, test once every 1 hour to determine the effective repellent time of the mosquito repellent. Each time, a blank test is performed on the control hand first. The test insects with qualified attack power can continue the test. If the test insects have unqualified attack power, they need to be replaced with qualified test insects for the test.

[0135] (5) The test results are shown in Tables 1 to 48 below.

[0136] Table 1: 50% 2,2-dimethyl-1,3-propanediol test results

[0137]

[0138] Table 2: 30% 2,2-dimethyl-1,3-propanediol test results

[0139]

[0140] Table 3: 20% 2,2-dimethyl-1,3-propanediol test results

[0141]

[0142] Table 4: 15% 2,2-dimethyl-1,3-propanediol test results

[0143]

[0144] Table 5: 50% 2-methyl-2-ethyl-1,3-propanediol test results

[0145]

[0146] Table 6: 30% 2-methyl-2-ethyl-1,3-propanediol test results

[0147]

[0148] Table 7: 20% 2-methyl-2-ethyl-1,3-propanediol test results

[0149]

[0150] Table 8: 15% 2-methyl-2-ethyl-1,3-propanediol test results

[0151]

[0152] Table 9: 50% 2-methyl-2-propyl-1,3-propanediol test results

[0153]

[0154]

[0155] Table 10: 30% 2-methyl-2-propyl-1,3-propanediol test results

[0156]

[0157] Table 11: 20% 2-methyl-2-propyl-1,3-propanediol test results

[0158]

[0159] Table 12: 15% 2-methyl-2-propyl-1,3-propanediol test results

[0160]

[0161] Table 13: 50% 2-methyl-2-butyl-1,3-propanediol test results

[0162]

[0163]

[0164] Table 14: 30% 2-methyl-2-butyl-1,3-propanediol test results

[0165]

[0166] Table 15: 20% 2-methyl-2-butyl-1,3-propanediol test results

[0167]

[0168] Table 16: 15% 2-methyl-2-butyl-1,3-propanediol test results

[0169]

[0170] Table 17: 50% 2,2-diethyl-1,3-propanediol test results

[0171]

[0172] Table 18: 30% 2,2-diethyl-1,3-propanediol test results

[0173]

[0174] Table 19: 20% 2,2-diethyl-1,3-propanediol test results

[0175]

[0176] Table 20: 15% 2,2-diethyl-1,3-propanediol test results

[0177]

[0178] Table 21: 50% 2-ethyl-2-propyl-1,3-propanediol test results

[0179]

[0180] Table 22: 30% 2-ethyl-2-propyl-1,3-propanediol test results

[0181]

[0182]

[0183] Table 23: 20% 2-ethyl-2-propyl-1,3-propanediol test results

[0184]

[0185] Table 24: 15% 2-ethyl-2-propyl-1,3-propanediol test results

[0186]

[0187] Table 25: 50% 2-ethyl-2-butyl-1,3-propanediol test results

[0188]

[0189] Table 26: 30% 2-ethyl-2-butyl-1,3-propanediol test results

[0190]

[0191]

[0192] Table 27: 20% 2-ethyl-2-butyl-1,3-propanediol test results

[0193]

[0194] Table 28: 15% 2-ethyl-2-butyl-1,3-propanediol test results

[0195]

[0196] Table 29: 50% 2,2-dipropyl-1,3-propanediol test results

[0197]

[0198] Table 30: 30% 2,2-dipropyl-1,3-propanediol test results

[0199]

[0200]

[0201] Table 31: 20% 2,2-dipropyl-1,3-propanediol test results

[0202]

[0203] Table 32: 15% 2,2-dipropyl-1,3-propanediol test results

[0204]

[0205] Table 33: 50% 2-propyl-2-butyl-1,3-propanediol test results

[0206]

[0207] Table 34: 30% 2-propyl-2-butyl-1,3-propanediol test results

[0208]

[0209] Table 35: 20% 2-propyl-2-butyl-1,3-propanediol test results

[0210]

[0211] Table 36: 15% 2-propyl-2-butyl-1,3-propanediol test results

[0212]

[0213] Table 37: 50% 2,2-dibutyl-1,3-propanediol test results

[0214]

[0215] Table 38: 30% 2,2-dibutyl-1,3-propanediol test results

[0216]

[0217] Table 39: 20% 2,2-dibutyl-1,3-propanediol test results

[0218]

[0219]

[0220] Table 40: 15% 2,2-dibutyl-1,3-propanediol test results

[0221]

[0222] Table 41: 50% p-menthyl glycol test results

[0223]

[0224] Table 42: 30% p-menthyl glycol test results

[0225]

[0226] Table 43: 20% p-menthyl glycol test results

[0227]

[0228]

[0229] Table 44: 15% p-menthyl glycol test results

[0230]

[0231] Table 45: 50% mosquito repellent test results

[0232]

[0233] Table 46: 30% mosquito repellent test results

[0234]

[0235] Table 47: 20% mosquito repellent test results

[0236]

[0237] Table 48: 15% mosquito repellent test results

[0238]

[0239] It can be seen from Tables 1 to 48 above that the pest repellent prepared with the polyol compound as the repellent ingredient of the present invention has a mosquito repelling effect comparable to that of the existing repellent with menthyl glycol and chlorpyrifos as the repellent ingredients, and the mosquito repelling duration increases with increasing concentration, and the mosquito repelling duration can reach 2.5h to 7.25h.

[0240] Embodiment 41:

[0241] This embodiment relates to a mosquito repellent liquid, the formula of which is as follows:

[0242] Deionized water 59.80%, propylene glycol 20.00%, glycerol 5.00%, 2-methyl-2-propyl-1,3-propanediol 15.00%, disodium EDTA 0.10%, tetrasodium EDTA 0.10%.

[0243] Embodiment 42:

[0244] This embodiment relates to a mosquito repellent lotion, the formula of which is specifically shown in Table 49 below.

[0245] Table 49 Raw material components and proportions of mosquito repellent lotion

[0246]

[0247] The mosquito repellent liquid of Example 41 and the mosquito repellent lotion of Example 42 were taken to test the mosquito repellent effect and duration respectively (the testing method is the same as other embodiments of the present invention).

[0248] The test results are shown in Tables 50 and 51 below.

[0249] Table 50 Mosquito repellent (15% 2-methyl-2-propyl-1,3-propanediol) test results

[0250]

[0251] Table 51 Mosquito repellent lotion (5% 2-ethyl-2-butyl-1,3-propanediol) test results

[0252]

[0253] It can be seen from Table 50 above that the average effective protection time of 15% 2-methyl-2-propyl-1,3-propanediol mosquito repellent against Aedes albopictus is 6 hours, and the efficacy is acceptable.

[0254] It can be seen from Table 51 above that the average effective protection time of 5% 2-ethyl-2-butyl-1,3-propanediol mosquito repellent lotion against Aedes albopictus is 4 hours, and the efficacy is acceptable.

[0255] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent change made to the above embodiment based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. Use of a polyol compound in the preparation of a pest repellent, characterized in that: A polyol compound is mixed with a solvent and water to prepare a pest repellent, wherein the polyol compound is a repellent component and has a structure as shown in the following formula (1): （1） In formula (1), R1 and R2 are each selected from any one of -CH3, -CH2CH3, -CH2CH2CH3, -CH (CH3)2, -CH2CH2CH2CH3, -CH(CH3)CH2CH3, -CH2CH(CH3)2 or -C(CH3)3.

2. The use according to claim 1, characterized in that: The polyol compound is selected from any one of 2,2-dimethyl-1,3-propanediol, 2-methyl-2-ethyl-1,3-propanediol, 2-methyl-2-propyl-1,3-propanediol, 2-methyl-2-butyl-1,3-propanediol, 2,2-diethyl-1,3-propanediol, 2-ethyl-2-propyl-1,3-propanediol, 2-ethyl-2-butyl-1,3-propanediol, 2,2-dipropyl-1,3-propanediol, 2-propyl-2-butyl-1,3-propanediol and 2,2-dibutyl-1,3-propanediol.

3. The use according to claim 1, characterized in that: The solvent is selected from any one of ethanol, propylene glycol or butylene glycol.

4. A pest repellent according to any one of claims 1 to 3, characterized in that: In terms of mass percentage, the polyol compound is 1 to 30%, the solvent is 10 to 65%, and water is 30 to 65%.

5. Use of the insect repellent according to claim 4 in the preparation of a smearable mosquito repellent product, characterized in that: The mosquito repellent products include mosquito repellent liquid, mosquito repellent floral water, mosquito repellent lotion and mosquito repellent cream.

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