TW201907805A - Mosquito repellent capable of effectively extending time duration of mosquito repelling and convenient for spraying or smearing - Google Patents

Abstract

Provided is a mosquito repellant, which contains liquid solvent, essential oil dispersed in the liquid solvent, and adsorptive particles dispersed in the liquid solvent. By having the mosquito repellant as 100 wt%, the content ratio of the liquid solvent is in a range of 70 to 95 wt%. The mosquito repellant of the present invention is able to effectively extend the time duration of mosquito repelling, and is convenient for spraying or smearing. Furthermore, by having the mosquito repellant as 100 wt%, the content ratio of the adsorptive particles is in a range of 0.03 to 0.5 wt%, and the content ratio of the essential oil is in a range of 0.5 to 15 wt%.

Description

Anti-mosquito solution

The invention relates to a mosquito repellent liquid, in particular to a mosquito repellent liquid comprising a liquid solvent, an essential oil and an adsorbing granule.

Existing anti-mosquito liquids with long-lasting anti-mosquito effect contain a large number of chemically synthesized insect repellents; and the anti-mosquito liquids that are marketed with essential oils are often less than 20 minutes, or even only In a few minutes, it is usually extended by increasing the proportion of essential oils or adding insect repellents, but it also increases the risk of cost or toxicity and pollution.

Accordingly, it is an object of the present invention to provide an anti-mosquito solution that overcomes the disadvantages of the prior art described above.

Accordingly, the mosquito repellent of the present invention comprises a liquid solvent, an essential oil dispersed in the liquid solvent, and adsorbent particles dispersed in the liquid solvent. The mosquito liquid is 100 wt%, and the content ratio of the liquid solvent ranges from 70 to 95 wt%.

The effect of the invention is that the mosquito repellent of the invention can effectively prolong the anti-mosquito aging and is convenient for spraying or smearing.

The contents of the present invention will be described in detail below:

The mosquito repellent of the present invention can be used by spraying, smearing, evaporating, patching and the like.

When the content ratio of the adsorptive particles is too high, the mosquito liquid is difficult to be sprayed or applied. Alternatively, the adsorbent bulk material such as charcoal or ore may be immersed in the essential oil, and the micro-adsorbed particles are released through the soaking process to prepare the mosquito-repellent liquid. Alternatively, the anti-mosquito solution may be 100 wt%, and 0.0001 to 3 wt% of the adsorptive particles may be directly added to the essential oil to prepare the mosquito repellent liquid. More preferably, the anti-mosquito liquid is 100 wt%, and the content ratio of the adsorptive particles ranges from 0.03 to 0.5 wt%.

The adsorbent particles retain the essential oil by virtue of its chemisorption characteristics and/or the physical adsorption characteristics produced by increasing the surface area, thereby effectively prolonging the anti-mosquito aging. Preferably, the adsorptive particles are selected from the group consisting of activated carbon, charcoal, bamboo charcoal, clay, slime powder, diatomaceous earth, zeolite, tannin, porous polymer resin, wormwood powder, mint powder, titanium dioxide powder or a combination thereof. . In a particular embodiment of the invention, the adsorptive particles are selected from the group consisting of activated carbon or slime powder.

Preferably, the mosquito liquid is 100 wt%, and the content ratio of the essential oil ranges from 0.5 to 15 wt%.

This essential oil provides anti-mosquito effects. Preferably, the essential oil is selected from the group consisting of lavender essential oil, eucalyptus essential oil, lemon eucalyptus essential oil, peppermint essential oil, clove essential oil, white layer essential oil, grapefruit essential oil, geranium essential oil, cinnamon essential oil, catnip essential oil, lemon essential oil , bergamot essential oil, citronella essential oil or a combination thereof. In a particular embodiment of the invention, the essential oil is lavender essential oil.

Preferably, the liquid solvent is water.

Preferably, the mosquito repellent further comprises an emulsifier to uniformly disperse the essential oil in the liquid solvent.

Preferably, the mosquito repellent liquid further comprises a chemically synthesized insect repellent to enhance the anti-mosquito effect. More preferably, the insect repellent is selected from the group consisting of diethyltoluamide (DEET), picaridin (icaridin), imnin (IR3535, BAAPE), permethrin (permethrin), p-mentholt Alkane-3,8-diol ( p- menthane-3, 8-diol, PMD), methyl nonyl ketone or a combination thereof.

The invention is further described in the following examples, but it should be understood that these examples are for illustrative purposes only and are not to be construed as limiting.

[ Preparation of mosquito repellent liquid]

<Example 1 >

Lavender essential oil, activated carbon (purchased from Chengyi Chemical, product number SI40008, the name is activated carbon) and essential oil emulsifier (purchased from Chengyi Chemical, product number LI50012) are placed in a container and mixed. The water was shaken until the essential oil, activated carbon and emulsifier were uniformly dispersed in water to obtain the mosquito repellent of Example 1. In Example 1, the mixing weight ratio of essential oil, activated carbon, emulsifier and water was 5:0.1:5:89.9.

<Example 2 >

The preparation process of Example 2 is similar to that of Example 1, except that the activated carbon is changed to mineral mud powder (purchased from Chengyi Chemical, product number SD60009, product name is organic coral red clay mud powder), and an example is obtained. 2 anti-mosquito solution. In Example 2, the mixing weight ratio of essential oil, slime powder, emulsifier and water was 5:0.1:5:89.9.

<Comparative example>

The preparation procedure of the comparative example was similar to that of Example 1, except that the activated carbon was not added, and the anti-mosquito solution of the comparative example was obtained. In the comparative example, the mixing weight ratio of essential oil, emulsifier and water was 5:5:90.

[ Anti-mosquito test]

Spray the anti-mosquito solution of Examples 1-2 and Comparative Example about 9 mL on the surface of a milky white latex glove (spray 3 times on the front and back of each glove, each spray amount is about 1.5 mL), and wear it on the hand. Put in a mosquito terrarium and calculate the number of mosquitoes staying on the gloves for the first, fifth, tenth, 20th and 30th minutes respectively, and put them on the hand as a blank control with a milky latex glove that is not sprayed with anti-mosquito solution. The group was repeated 3 times and the average value was calculated. The results are shown in Table 1 below. The repellent rate in Table 1 is calculated by the following mathematical formula 1: [Math 1] 【Table 1】

It can be clearly seen from the above Table 1 that in terms of the average number of mosquito stays, the anti-mosquito solution of the comparative example has a significant increase in the number of stays after spraying for 10 to 30 minutes; and the anti-mosquito solution of Examples 1 and 2 After spraying for 10 to 30 minutes, the number of stays can be maintained below half of the comparative example, indicating that it has a better long-lasting anti-mosquito effect than the anti-mosquito solution of the comparative example. In terms of the repellent rate, the anti-mosquito solution of the comparative example has been reduced to about 90% after spraying for 20 to 30 minutes, which is similar to the aging effect of the anti-mosquito liquid which is generally commercially available as an anti-mosquito component; After the anti-mosquito solution of Examples 1 and 2 was sprayed for 30 minutes, the repellent rate was maintained at about 95% or more, indicating that the anti-mosquito effect subsided at a slower rate than the anti-mosquito solution of the comparative example.

In summary, the anti-mosquito liquid of the present invention adsorbs the essential oil by the adsorptive particles dispersed in the liquid solvent, and only needs a relatively small amount of adsorbing particles without increasing the proportion of the essential oil (the main factor affecting the cost of the anti-mosquito liquid) The effect of prolonging the anti-mosquito aging effect can be attained, and the anti-mosquito solution can be used by simply spraying or smearing, so that the object of the present invention can be achieved.

However, the above is only the embodiment of the present invention, and the scope of the invention is not limited thereto, and all the equivalent equivalent changes and modifications according to the scope of the patent application and the patent specification of the present invention are still The scope of the invention is covered.

Claims (10)

An anti-mosquito solution comprising: a liquid solvent; an essential oil dispersed in the liquid solvent; and an adsorptive particle dispersed in the liquid solvent, the mosquito liquid is 100 wt%, and the content ratio of the liquid solvent is 70 ~95 wt%. The mosquito repellent solution according to claim 1, wherein the anti-mosquito liquid is 100 wt%, and the content ratio of the adsorptive particles ranges from 0.0001 to 3 wt%. The mosquito repellent solution according to claim 2, wherein the anti-mosquito liquid is 100 wt%, and the content ratio of the adsorptive particles ranges from 0.03 to 0.5 wt%. The mosquito repellent solution according to claim 1, wherein the adsorptive particles are selected from the group consisting of activated carbon, charcoal, bamboo charcoal, clay, slime powder, diatomaceous earth, zeolite, tannin, porous polymer resin, and wormwood powder. , mint powder, titanium dioxide powder or a combination thereof. The anti-mosquito solution according to claim 1, wherein the anti-mosquito solution is 100 wt%, and the content ratio of the essential oil ranges from 0.5 to 15 wt%. The anti-mosquito solution according to claim 1, wherein the essential oil is selected from the group consisting of lavender essential oil, eucalyptus essential oil, lemon eucalyptus essential oil, peppermint essential oil, clove essential oil, white layer essential oil, grapefruit essential oil, geranium essential oil, Cinnamon essential oil, catnip essential oil, lemon essential oil, bergamot essential oil, citronella essential oil or a combination thereof. The mosquito repellent solution according to claim 1, wherein the liquid solvent is water. The mosquito repellent according to claim 1, further comprising an emulsifier to uniformly disperse the essential oil in the liquid solvent. The mosquito repellent according to claim 1, which further comprises an insect repellent. The anti-mosquito solution according to claim 9, wherein the insect repellent is selected from the group consisting of phenytoin, picaredin, imnin, permethrin, p-menthane-3,8-diol, Methylmercapto ketone or a combination thereof.