TWM651660U - Insect repelling spray device - Google Patents

Abstract

An insect repelling liquid spray device includes a spray tank and an insect repelling composition. The spray tank includes a tank body and a spray head, and the tank body has an internal space. The insect repelling composition is contained in the internal space of the tank body, and is composed of materials including a water-soluble polymer, silicon dioxide, p-Menthane-3,8-diol (PMD), at least one essential oil and a solvent, wherein the water-soluble polymer accounts for 0.1 to 2 wt% of the composition, the dioxide silicon accounts for 0.1 to 5 wt% of the composition, the PMD accounts for 0.1 to 3 wt% of the composition, the at least one essential oil has at least 0.1 wt%, and the sum of the weight percentages of the water-soluble polymer, the silicon dioxide, the PMD, the at least one essential oil and the solvents is less than or equal to 100.

Description

Insect repellent spray device

The invention relates to an insect repellent spray device and its repellent composition, in particular to an insect repellent spray device and its long-lasting insect repellent composition.

Taiwan is located in the subtropics and is often disturbed by insects, so insect repellent products are a necessity in life. Liquid insect repellent products can be applied over a large area, but because they evaporate quickly, they are easily consumed before the insect repellent effect is achieved. In addition to causing waste, it also requires frequent replenishment. Solid insect repellent products can repel insects for a longer period of time, but they are deployed at fixed points and are difficult to apply on a large scale. In addition, the repellent ingredients are dispersed from a fixed point to the surrounding area, so the efficiency is not good.

This invention provides an insect repellent spray device and its insect repellent composition. The insect repellent composition of the insect repellent spray device of this invention contains relatively natural insect repellent ingredients and is stable and long-lasting. The insect repellent composition of this invention helps to reduce the number of applications and avoids the loss of insect repellent ingredients so that they can effectively function.

The insect repellent spray device provided by this invention includes a spray tank and an insect repellent composition. The spray tank includes a tank body and a nozzle, and the tank body has an internal space. The insect repellent composition is contained in the internal space of the tank and is composed of a material including a water-soluble polymer, silica, citronol, at least one essential oil and a solvent, wherein the water-soluble polymer accounts for 0.1 to 2% of the composition. weight percent, dioxide Silicon accounts for 0.1 to 5 weight percent of the composition, citronol accounts for 0.1 to 3 weight percent of the composition, at least one essential oil has at least 0.1 weight percent, and the water-soluble polymer, silicon dioxide, citronol, and at least one The sum of the weight percentages of essential oils and solvents is less than or equal to 100.

In an embodiment of the present invention, the above-mentioned nozzle is further a press nozzle and has a nozzle; the insect repellent composition is in a liquid state, and the press nozzle is adapted to be pressed so that the nozzle releases droplets of the insect repellent composition.

In an embodiment of the present invention, the monomer of the water-soluble polymer is selected from the group consisting of sugars, acrylic acid and acrylic acid derivatives.

In an embodiment of the present invention, the above-mentioned water-soluble polymer is selected from the group consisting of carageenan, carrageenan, and Carbopol.

In an embodiment of the present invention, the molecular weight of the above-mentioned water-soluble polymer is greater than 100,000 Daltons.

In an embodiment of the present invention, the molecular weight of the above-mentioned water-soluble polymer is greater than 500,000 Daltons.

In an embodiment of the present invention, the above-mentioned silicon dioxide is further a plurality of silicon dioxide particles, and these particles have a particle size of no more than 100 mesh.

In an embodiment of the invention, the particle size of the plurality of particles further ranges from 50 to 100 mesh.

In one embodiment of the present invention, the above-mentioned insect repellent composition has viscosity and is in a flowable liquid state.

In an embodiment of the present invention, the material of the above-mentioned insect repellent composition further includes a volatile solvent.

This creation uses water-soluble polymers and silica to make insect repellent ingredients such as lemon eucalyptol and essential oils more durable.

In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, examples are given below and explained in detail in conjunction with the attached drawings.

S110: Preparation of water-soluble polymer

S120: Mix citronol, essential oil and silica

S130: Mix the prepared water-soluble polymer and the mixture of step S120

S210: Prepare silica powder

S220: Mix lemon eucalyptol and essential oils

S230: Mix the silica powder and the mixture of step S220

30:Acrylic box

300:Central District

40:Plastic skin flooring

40’: Treated plastic skin flooring

50: Insect repellent spray device

500: spray tank

510:Tank

520:Nozzle

525:Nozzle

530:Internal space

600:Anthelmintic composition

Figure 1 shows a schematic flow chart of an embodiment of a method for preparing an insect repellent composition of the insect repellent spray device of the present invention.

Figure 2 shows another schematic flow chart of another embodiment of the preparation method of the insect repellent composition of the insect repellent spray device of the present invention.

Figure 3 shows a schematic structural diagram of an embodiment of the insect repellent spray device of the present invention.

Figure 4 shows a schematic top view of the test equipment of the test embodiment of the insect repellent spray device of the present invention.

This invention provides an insect repellent spray device and its repellent composition, which has a long-term repellent effect on common household insects such as cockroaches, ants, mosquitoes, etc. The insect repellent composition of the insect repellent spray device of this invention is composed of materials including water-soluble polymer, silica, citronol, essential oils and solvents. The weight percentage of the water-soluble polymer in the repellent composition can be 0.1~2wt%, silica can account for 0.1~5wt%, citronol can account for 0.1~3wt%, and the essential oils can be one or more, and each of them can be The dosage can be 0.1~3wt% respectively. Lemon eucalyptol and essential oils are active ingredients that insects avoid. Water-soluble polymers and silica can be used to make insect repellent ingredients such as citronol and essential oils disperse more slowly, thus helping to prolong the insect repellent time after the insect repellent composition is applied.

The monomer of the aforementioned water-soluble polymer may be selected from the group consisting of sugars, acrylic acid and acrylic acid derivatives. In several embodiments of this invention, Carbopol ^® polyacrylic acid products from Lubrizol Life Science (LLS Health) Company can be used. For example, Carbopol 934, Carbopol 940, and Carbopol 996 can be used as water-soluble polymers. In addition to polymers of acrylic acid and acrylic acid derivatives, water-soluble polymers such as sanxian gum and carrageenan can also be used.

In this creative embodiment, the molecular weight of the water-soluble polymer is preferably greater than 100,000 Daltons, and may further be greater than 500,000 Daltons. Generally speaking, when the molecular weight of the water-soluble polymer is larger, the dosage in the range of 0.1~2wt% can be smaller, but it is not limited to this. The water-soluble polymer can be used as a carrier of eucalyptol and essential oil, and can be used together with the solvent to give the repellent composition a liquid form. The liquid insect repellent composition of the present invention is preferably fluid and viscous. For example, the repellent composition of the present invention has a viscosity of, for example, 40,000~75,000cP. The viscosity is related to the type, molecular weight and weight percentage of the water-soluble polymer. In some embodiments of the present invention, the repellent composition contains 0.5wt% Carbopol 940 and has a viscosity of about 40,000~60,000cP. In some embodiments of the present invention, the repellent composition contains 0.5wt% Carbopol 996 and has a viscosity of about 45,000~75,000cP.

In this creative embodiment, silicon dioxide further refers to the material used including particles of silicon dioxide. Silica particles may be suspended in the repellent composition. Preferably, the silica particles have a particle size, for example, no greater than 100 mesh (approximately 149 microns). In some embodiments of the present invention, the particle size of the particles further ranges from 50 to 100 mesh (approximately 149 to 297 microns). The silica particles themselves can serve as carriers for citronol and essential oils, and during the preparation process of the insect repellent composition, they help the water-soluble polymer form a carrier and coat citronol and essential oils well. Therefore, silicon dioxide also directly and indirectly contributes to prolonging the insect-repellent time of the insect repellent composition of the present invention.

In this creative embodiment, the essential oils may be selected from, for example, lemon essential oil, peppermint essential oil, geranium essential oil, basil essential oil, tansy essential oil, pine essential oil, citronella essential oil, clove essential oil, cinnamon essential oil, cedar essential oil, eucalyptus essential oil, Lavender essential oil, patchouli essential oil, but not limited to these plant essential oils. In some embodiments, synthetic essential oils or synthetic essential oils combined with natural A combination of natural plant essential oils. In a preferred embodiment of this invention, 0.1~3wt% tansy essential oil and 0.1~3wt% pine essential oil are used.

The solvent can be selected from the group consisting of water, methanol, ethanol, propanol and isopropyl alcohol, but in this creative embodiment, water is preferably used as the main solvent. Water may further comprise a maximum weight percentage. In some embodiments, for example, the weight percentage of water is 77 to 99 wt%. Embodiments of this invention may further include volatile solvents. The volatile solvent may be selected from the group consisting of methanol, ethanol, propanol and isopropyl alcohol. In some embodiments of the present invention, for example, the weight percentage of the volatile solvent is 0.5~5wt%. Volatile solvents can promote the dispersion of citronol and essential oils.

This creative embodiment may further include an emulsifier to uniformly mix oil-soluble ingredients such as essential oils with water-soluble ingredients and solvents. In several embodiments of the invention, for example, coconut oil is used as an emulsifier. The selection and dosage of the emulsifier can be deduced based on common knowledge in the art and other components of the composition of the present invention, and will not be described again here.

The invention also provides a preparation method of an insect repellent composition, including step S110: preparing a water-soluble polymer, step S120: mixing citronol, essential oil and silicon dioxide, and step S130: mixing the prepared water-soluble polymer and The mixture of step S120.

In this creative embodiment, step S110 may further include preparing the water-soluble polymer with an aqueous solvent. In several embodiments, for example, Carbopol powder is dissolved in water and the gelatinization of Carbopol is opened. In some embodiments, 77 to 99 wt% water can be used in step S110 at one time to open the glue of Carbopol. Step S120 may further include step S210: preparing silica powder, step S220: mixing citronol and essential oil, and step S230: mixing silica powder and the mixture of step S220. In step S230, citronol and essential oil will be attached to the silica powder particles. From step S120, silica powder adsorbed with citronol and essential oil will be obtained. In addition to lemon eucalyptol and essential oil, in some embodiments, step S120 further mixes lemon eucalyptol and essential oil. Citronol, essential oils, emulsifiers, volatile solvents and silica. The specifications and dosage of water-soluble polymers, solvents, citronol, essential oils, silica, emulsifiers and volatile solvents can be found in the above.

Step S110 and step S120 may be performed in any order, simultaneously or at different times. In step S130, the water-soluble polymer will be formed as a carrier and can coat citronol and essential oil. Silica particles can be evenly suspended between carrier microcapsules formed by water-soluble polymers. Through the carrier microcapsules formed by water-soluble polymers and the silica particles and particle texture, the repellent ingredients of the repellent composition of this invention can be dispersed more slowly and can remain effective for a longer period of time after each application. The repellent composition of the present invention and the repellent composition prepared by the aforementioned method can be in liquid form, have viscosity, and be nearly transparent and colorless, so that they can be easily made into liquids or sprays and applied to the surface of objects.

The repellent effect of insect repellent compositions on common household insects

This invention further tests the repellent effect of the repellent composition of the insect repellent spray device on common household insects. The materials and methods used in the experimental examples of this creation are described below.

(1) Test materials:

1. Test insects

2. Number of insects: 10 American cockroaches and 10 German cockroaches each.

3. Test environment: room temperature 27~29℃, relative humidity 75~85%.

(2) Test method:

1. Insect repellent spray device and test equipment, as shown in Figure 3 and Figure 4:

(1) Insect repellent spray device 50:

The insect repellent spray device 50 includes a spray tank 500 and an insect repellent composition 600 . The spray tank 500 includes a tank body 510 and a spray head 520. The components of the insect repellent composition 600 are as described above. The tank body 510 has an internal space 530, and the insect repellent composition 600 is accommodated in the internal space 530. The nozzle 520 is adapted to release the insect repellent composition 600 from the inner space 530 out of the tank 510 . The nozzle 520 of the insect repellent spray device 50 used in this test is further a pressing nozzle and has a nozzle 525. The pressing nozzle is adapted to be pressed so that the nozzle 525 releases liquid droplets of the insect repellent composition 600 .

(2) Acrylic box 30, with lid attached. The length*width*height of the box: 40cm*20cm*12cm.

(3) Plastic veneer floor 40. Length*Width: 20cm*20cm.

2. Test process:

(1) Prepare the test box: take the plastic veneer floor 40, use the insect repellent spray device 50 to spray the repellent composition 600 on the plastic veneer floor 40 at an amount of 20 mL/ ^m2 , and then wet it with a brush or brush Then apply evenly and wait until dry to form a treated plastic veneer floor 40'. The processed plastic skin flooring 40' is arranged at the bottom of one side of the acrylic box 30 to serve as a processing area. Take another untreated plastic skin floor 40 and arrange it at the bottom of the other side to serve as a control area. The central area 300 is between the untreated plastic veneer floor 40 and the treated plastic veneer floor 40'.

(2) Repeat the process of (1) to prepare another test box.

(3) Use carbon dioxide to anesthetize test cockroaches (10 adults each of American cockroaches and German cockroaches), and place the anesthetized American cockroaches and German cockroaches in the centers of the two test boxes. Close the lid and supply drinking water at both ends of the test box.

(4) Observe and record the number of individual cockroaches in the treatment area and control area after 2, 24, 48, 72, 96, 120 and 144 hours respectively.

(5) Repeat the process of (3)~(4) twice. A total of three trials were conducted.

(3) Test results:

1. The test results of the repellent composition against American cockroaches and German cockroaches are shown in Table 1 and Table 2 respectively.

2. Avoidance rate (%) = (number of American cockroaches or German cockroaches in the treatment area of each trial/total number of American cockroaches or German cockroaches in each trial)*100

Table 2: The repellent effect of repellent compositions on German cockroaches

Conclusion:

Tested by the two-way selection method, the repellent composition has a repellent effect on American cockroaches and German cockroaches. The repellent rate against German cockroaches can be maintained at 100% after 144 hours (6 days), showing that this repellent spray has a repellent effect. The insect repellent composition of the device embodiment has good stability and long-term effect. Good stability and long-term effectiveness reflect less unnecessary loss of insect repellent ingredients and higher insect repellent ingredients. application efficiency. Furthermore, since the insect repellent composition of the insect repellent spray device of the present invention can be in liquid form and has viscosity, the insect repellent composition and/or its liquid and spray can be "coated" over a large area on the applied object. It is permanently distributed on the surface, thus improving the insect repellent effect.

Test Example Reference: Repellent activity of essential oils against cockroaches (Dictyoptera: Blattidae, Blattellidae, and Blaberidae) in Thailand. Thavara U, Tawatsin A, Bhakdeenuan P, Wongsinkongman P, Boonruad T, Bansiddhi J, Chavalittumrong P, Komalamisra N, Siriyasatien P, Mulla MS. Southeast Asian J Trop Med Public Health. 2007 Jul; 38(4): 663-73. PMID: 17883004.

Although the present invention has been disclosed as above in the form of embodiments, they are not intended to limit the invention. Those with ordinary knowledge in the technical field to which this invention belongs may make slight changes and modifications without departing from the spirit and scope of the invention. Therefore, the scope of protection of this invention shall be determined by the appended patent application scope.

50: Insect repellent spray device

500: spray tank

510:Tank

520:Nozzle

525:Nozzle

530:Internal space

600:Anthelmintic composition

Claims (10)

An insect repellent spray device includes a spray tank and an insect repellent composition, wherein: The spray tank includes a tank body and a spray head, and the tank body has an internal space; and The insect repellent composition is contained in the internal space of the tank, and the nozzle is adapted to release the insect repellent composition from the internal space out of the tank; wherein the insect repellent composition is composed of the following Made of materials: A water-soluble polymer, the water-soluble polymer accounts for 0.1 to 2 weight percent of the composition; Silicon dioxide, accounting for 0.1 to 5 weight percent of the composition; Lemon eucalyptol accounts for 0.1 to 3 weight percent of the composition; At least one essential oil having a weight percent of at least 0.1; and a solvent; Wherein, the total weight percentage of the water-soluble polymer, the silica, the citronol, the at least one essential oil and the solvent is less than or equal to 100. The insect repellent spray device of claim 1, wherein the nozzle is further a push nozzle and has a nozzle; the repellent composition is in a liquid state, and the push nozzle is adapted to be pressed to cause the nozzle to release the repellent Droplets of composition. The insect repellent spray device of claim 1, wherein the monomer of the water-soluble polymer is selected from the group consisting of sugars, acrylic acid and acrylic acid derivatives. The insect repellent spray device of claim 2, wherein the water-soluble polymer is selected from the group consisting of carrageenan, carageenan and Carbopol. The insect repellent spray device as claimed in claim 1, wherein the molecular weight of the water-soluble polymer is greater than 100,000 daltons. The insect repellent spray device of claim 4, wherein the molecular weight of the water-soluble polymer is greater than 500,000 Daltons. The insect repellent spray device of claim 1, wherein the silicon dioxide is further a plurality of silicon dioxide particles, and the particles have a particle size of no more than 100 mesh. The insect repellent spray device described in claim 7, wherein the particle size of the particles is further 50 to 100 mesh. As for the insect repellent spray device described in claim 1, the insect repellent composition has viscosity and is in a flowable liquid state. The insect repellent spray device according to claim 1, wherein the material constituting the insect repellent composition further includes a volatile solvent.