JP7514043B2 - A trigger-equipped spray product filled with a water-based pest control agent - Google Patents

Description

The present invention relates to an aqueous pest control agent.

Synthetic pyrethroid compounds are often used as the pest control ingredient in pest control agents, but with consumers' increasing preference for natural products, there is a demand for pest control agents that contain the natural ingredient, Jojoba daisy extract, as an insecticidal ingredient, and such pest control agents are being developed (Patent Documents 1 and 2).

Japanese Patent Application Laid-Open No. 6-298601 JP 2005-281141 A

As disclosed in the invention of Patent Document 2, when a daisy extract is dissolved in alcohol, the resulting solution has a problem of low storage stability.

The objective of the present invention is to provide a pest control agent that contains as an insecticidal ingredient a Jojoba daisy extract that has good storage stability and is highly safe because it is water-based.

The present inventors have conducted extensive research to solve the above problems and have arrived at the present invention.
[1] An aqueous pest control agent comprising a Jojoba daisy extract, an alcohol, a glycerin fatty acid ester and water, wherein the fatty acid of the glycerin fatty acid ester is oleic acid.
[2] The above aqueous insect pest control agent, wherein the glycerol fatty acid ester is polyglyceryl oleate.
[3] The aqueous pest control agent as described above, wherein the glycerol fatty acid ester is present in an amount of 0.1 to 10% by weight based on the total weight of the aqueous pest control agent.
[4] The above aqueous insect pest control agent, which further contains one or more compounds selected from the group consisting of sorbitan oleate, sorbitan stearate and sorbitan palmitate.
[5] A spray product obtained by filling the above-mentioned aqueous pest control agent in a spray container equipped with a manual pump.
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The present invention makes it possible to provide a pest control agent that can be stored for long periods of time and is highly safe because it is water-based.

The pyrethrum extract used in the aqueous insect pest control agent of the present invention is an extract from naturally occurring pyrethrum. The pyrethrum extract usually contains six active ingredients, namely pyrethrin I, pyrethrin II, cinerin I, cinerin II, jasmolin I and jasmolin II. These six ingredients together are called total pyrethrins, and the pyrethrum extract used in the present invention contains 10 to 90% total pyrethrins.
The content of the Jojoba extract is in the range of 0.01 to 3% by weight based on the total weight of the aqueous pest control agent.

Examples of alcohols used in the aqueous pest control agent of the present invention include monohydric alcohols such as ethanol and isopropyl alcohol, and polyhydric alcohols such as sorbitol, propylene glycol, glycerin, 1,3-butylene glycol, and dipropylene glycol. The alcohols may be used alone or in combination. Among these, glycerin, 1,3-butylene glycol, and propylene glycol are preferred in terms of skin irritation to the human body.
The content of the alcohol is in the range of 0.1 to 10% by weight based on the total weight of the pest control agent.

The glycerol fatty acid ester used in the aqueous insect pest control agent of the present invention is a glycerol fatty acid ester whose component is oleic acid. Examples of the glycerol fatty acid ester include polyglyceryl oleate. Examples of commercially available polyglyceryl oleate include DECAGLYN-1-OV manufactured by NIKKOL and 01075TX manufactured by Takemoto Oil Co., Ltd.

The aqueous pest control agent of the present invention further contains one or more compounds selected from the group consisting of sorbitan oleate, sorbitan stearate, and sorbitan palmitate, which further improves the storage stability of the aqueous pest control agent. Commercially available products of these compounds can be used, and examples of such compounds include New Calgen D-935 manufactured by Takemoto Oil Co., Ltd. as sorbitan oleate, Rheodol SP-S10V manufactured by Kao Chemical Co., Ltd. as sorbitan stearate, and Rheodol SP-P10 manufactured by Kao Chemical Co., Ltd. as sorbitan palmitate.

The amount of water used in the aqueous pest control agent of the present invention may be determined so that the aqueous pest control agent does not become a flammable liquid.

The aqueous pest control agent of the present invention may further contain other components, such as preservatives, bactericides, fungicides, deodorants, pH adjusters, chelating agents, and fragrances. Examples of the preservatives include eucalyptus oil, phenoxyethanol, and parabens such as methylparaben. Examples of the fragrances include synthetic fragrances and vegetable oils, with vegetable essential oils being particularly preferred. Specific examples of plant essential oils include cypress oil, Japanese cypress oil, cedarwood oil, anise oil, sandalwood oil, clove oil, pimenta oil, pine oil, pine needle oil, manuka oil, patchouli oil, star anise oil, hyssop oil, palmarosa oil, lemongrass oil, thyme oil, dill oil, celery oil, peppermint oil, lemon eucalyptus oil, citronella oil, lemon scented tea tree oil, lavender oil, geranium oil, rosemary oil, tea tree oil, bergamot oil, orange oil, marjoram oil, juniper berry oil, ylang-ylang oil, clary sage oil, and rose oil. These can be used alone or in combination of two or more.

The aqueous pest control agent of the present invention is filled, for example, in a spray container equipped with a manual pump and used as a non-aerosol spray product. As the spray container equipped with a manual pump, a known one can be used, for example, a spray container such as that described in JP-A-2013-234153.

The spray product can be sprayed directly on pests when they invade living spaces such as the kitchen, living room, or entrance hall. It can also be sprayed in advance on pest hiding places and paths of pests, such as curtains, screen doors, and under floors, to control pests.

The average particle size of the spray particles sprayed from the nozzle of the spray product is in the range of 80 to 350 μm, preferably 100 to 250 μm. The average particle size here refers to the cumulative 50% volume particle size of the spray particles passing 30 cm from the tip of the nozzle when the spray product is pushed once, and can be measured using a laser diffraction particle size measuring device, AEROTRAC SPR MODEL-7340, manufactured by Nikkiso Co., Ltd.

The amount of spray per push of the spray product is designed appropriately depending on the situation of use, but is preferably 0.1 to 10 mL, and more preferably 0.3 to 1.5 mL. The shape of the nozzle, spray aperture, etc. may be designed appropriately to achieve the above-mentioned spray particle diameter and spray amount.

Examples of pests that can be controlled by the aqueous pest control agent of the present invention include the following pests.
Hemiptera pests: stink bugs such as the green grass bug, the narrow-striped bug, the large spurred spotted bug, the spurred spotted bug, the brown-winged green bug, the brown marmorated stink bug, etc., bedbugs such as Cimex lectularius, psyllids, etc.;
Lepidoptera pests: moths, burrs, burrs, and other tephritid moths;
Dipteran pests: Culex pipiens quinquefasciatus, Culex tritaeniorhynchus, Culex quinquefasciatus, and other Culex pipiens quinquefasciatus, Aedes mosquitoes, Aedes aegypti, Aedes albopictus, and other Chironomids, House flies, Musca domestica, Drosophila melanogaster, Flea flies, Moth flies, Black flies, Horseflies, Stable flies, Leafminers, and the like;
Coleoptera pests: weevils such as the rice water weevil and the azuki bean weevil, mealworms such as the red flour beetle, dermestid beetles, and anobiidae;
Blattella pests: German cockroach, Smoky brown cockroach, American cockroach, Brown cockroach, Oriental cockroach, etc.;
Hymenoptera pests: ants such as the house ant, black mountain ant, blue ant, water ant, giant ant, Argentine ant, fire ant, etc.; paper wasps such as Polistes bicolor, Polistes nigricans, and yellow paper wasps; hornets such as the giant hornet, Japanese yellow hornet, small hornet, Japanese giant hornet, and small female hornet; ant wasps, carpenter wasps, tortoiseshell wasps, digger wasps, mud wasps, etc.;
Orthoptera pests: mole crickets, grasshoppers, etc.;
Crypoptera pests: cat fleas, dog fleas, human fleas, etc. Phthiraptera pests: human body lice, pubic lice, cow lice, sheep lice, etc.;
Termitidae pests: Subterranean termites such as Reticulitermes speratus and Coptotermes formosanus, dry wood termites such as Formosan subterranean termites, and damp wood termites such as Nevada damp wood termite;
Acarina pests: mites such as Haemaphysalis longicornis, Haemaphysalis flava, Ixodes yamamatoides, and Ixodes sulcatus; mites such as Tyrophagus putrescentiae; house dust mites such as Dermatophagoides farinae and Dermatophagoides pteronyssinus; chiggers such as Dermoptera gracilis and Dermoptera stag beetle; house dust mites, Oreochromis nigricans, and Mites such as Mites mites; chiggers such as Leptotrombidiolidae;
Spiders: Chickweed, Redback, Orbweed, House Spider, Orb Weaver, Orb Weaver, Weaver Spider, Japanese Mussel, Japanese Wolf Spider, Japanese Siberian Wolf Spider, Japanese Siberian Flycatcher, Japanese House Spider, Japanese House Spider, Japanese Siberian Flycatcher, Japanese Jumping Spider, Asian House Spider, Japanese Jumping Spider, Asian Hunter Spider, etc.;
Chilopoda: Centipedes such as House Centipede, Japanese Millipede, Blue Millipede, and Sessia Millipede;
Diplopoda: Millipedes such as the red millipede, the red millipede, and the striped millipede;
Isopoda: woodlouse such as the narrow woodlouse and the woodlouse, pillbugs such as the pillbug, and sea louse such as the sea louse;

The present invention will be further explained below with reference to examples, but the present invention is not limited to these examples.

The components shown in Table 1 were mixed according to their respective mixing ratios to obtain 100 g of water-based insect pest control agent. The values shown in Table 1 are in weight percent.

[Table 1]

[Storage stability test]
20 cc of each aqueous pest control agent in Table 1 was placed in a transparent screw tube (capacity 30 cc), and the screw tube was left to stand in a thermostatic chamber at -20°C for 2 days, after which the screw tube was removed and left to stand in a room at 20°C for 1 hour, and then left to stand in a thermostatic chamber at 40°C for 2 days, after which it was removed and left to stand in a room at 20°C for 1 hour. These operations constituted one cycle, and the test was repeated until a change in the condition of the aqueous pest control agent was observed. The results are shown in Tables 2 and 3.

○：液分離なし、△：浮遊物あり [Table 2]

○: No liquid separation, △: Floating matter present

×：液分離あり [Table 3]

×: Liquid separation occurs

[Creating spray products]
[Formulation Example 1]
The aqueous insecticide of Example 4 was filled into a commercially available trigger spray container and a trigger (Canyon, model T-95) was attached to prepare a spray product of Formulation Example 1.

[Formulation Example 2]
The aqueous insecticide of Example 5 was filled into a trigger spray container and a trigger (Canyon, model T-95) was attached to prepare a spray product of Formulation Example 2.

[Formulation Example 3]
The aqueous insecticide of Example 2 was filled into a trigger spray container and a trigger (Mitani Valve, model T-650) was attached to prepare a spray product of Formulation Example 3.

[Formulation Example 4]
The aqueous insecticide of Example 4 was filled into a trigger spray container and a trigger (Canyon, Model T-014) was attached to prepare a spray product of Formulation Example 4.

Formulation Example 5
The aqueous insecticide of Example 4 was filled into a trigger spray container and a trigger (manufactured by Mitani Valve, model MIT-05SS) was attached to prepare a spray product of Formulation Example 5.

[Measurement of spray amount and average particle size of sprayed particles]
The spray amount per push of the spray products of Formulation Examples 1 to 4 was measured. In addition, the average particle size of the spray particles passing a position 30 cm from the tip of the nozzle when the spray product was pushed once was measured using a laser diffraction particle size measuring device (Nikkiso: AEROTRAC SPR MODEL-7240). The results are shown in Table 4.

[Table 4]

It is possible to provide an aqueous pest control agent having excellent storage stability, which contains a Jojoba daisy extract as a pest control ingredient.

Claims (7)

A trigger-type spray product containing an aqueous pest control agent containing a Jojoba daisy extract, alcohols, polyglyceryl monooleate, water, and one or more compounds selected from the group consisting of sorbitan oleate, sorbitan stearate, and sorbitan palmitate,
The content of the Jomon extract contained in the aqueous pest control agent is 0.01 to 3% by weight based on the total amount of the aqueous pest control agent,
The content of the alcohol is 0.1 to 10% by weight based on the total amount of the aqueous pest control agent,
A trigger spray product, characterized in that the content of polyglyceryl monooleate is 0.5 to 10% by weight based on the total amount of the aqueous pest control agent. The trigger-equipped spray product according to claim 1, wherein the alcohol is at least one selected from the group consisting of glycerin, 1,3-butylene glycol, and propylene glycol. The trigger spray product according to claim 1 or 2, wherein the aqueous pest control agent further contains at least one preservative selected from the group consisting of eucalyptus oil, phenoxyethanol, and methylparaben. The trigger spray product according to any one of claims 1 to 3, wherein the aqueous pest control agent further contains a plant essential oil. A trigger spray product according to any one of claims 1 to 4, characterized in that the average particle diameter of the spray particles passing at a position 30 cm from the nozzle tip is in the range of 100 to 250 μm. A method for controlling pests, comprising spraying the trigger-equipped spray product according to any one of claims 1 to 5 directly onto pests when they invade a kitchen, living room, or entranceway. A method for controlling pests, comprising spraying the trigger spray product according to any one of claims 1 to 5 on pests hiding under curtains, screen doors or floors or on paths of pests to control pests.