Pest control agent

Abstract

To provide a pest control agent that has sufficient storage stability and does not cause the problems of stickiness and contamination on the usage scene.SOLUTION: A pest control agent contains the following components (A)-(D): (A) pyrethrum extract, (B) polyoxyethylene hardened castor oil, (C) a specific ester surfactant, and (D) water. The mixture ratio of the components (B) and (C) is 50:50-95:5 in weight ratio.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to a pest control agent.

Background Art

[0002] In order to reduce the problem of flammability, the development of one-component aqueous pest control agents and aqueous aerosol agents containing water has been attempted. (For example, Patent Document 1)

[0003] Chouchu chrysanthemum extract has a control effect on various pests and is used as an active ingredient of an aerosol agent. When chouchu chrysanthemum extract is dissolved in water to form an aqueous insecticide or an aqueous aerosol agent, a surfactant is used. However, when the amount of the surfactant used is increased, there is a problem that the surfactant remains on the treated surface, resulting in stickiness and contamination. Therefore, although it is preferable that the amount of the surfactant used is as small as possible, when the amount is reduced, there are problems such as insufficient dissolution of chouchu chrysanthemum extract or separation and turbidity during storage.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] An object of the present invention is to provide a pest control agent having excellent storage stability and no problem of stickiness or contamination in the use scene.

Means for Solving the Problems

[0006] As a result of intensive studies to solve such problems, the present inventors have arrived at the present invention. That is, the present invention is [1] The following components (A) to (D): (A) Chouchu chrysanthemum extract, (B) Polyoxyethylene hydrogenated castor oil, (C) General formula (I) TIFF2025096417000001.tif4290 and / or General formula (II) TIFF2025096417000002.tif55105 [In formula (I) or formula (II), R1 represents oleic acid, stearic acid or palmitic acid, R2 represents oleic acid, stearic acid, palmitic acid or a hydrogen atom, and R3 represents oleic acid, stearic acid, palmitic acid or a hydrogen atom. When R2 represents a hydrogen atom, R3 represents a hydrogen atom, When R2 represents oleic acid, both R1 and R3 represent oleic acid, When R2 represents stearic acid, both R1 and R3 represent stearic acid, When R2 represents palmitic acid, both R1 and R3 represent palmitic acid.] An ester-type surfactant represented by (D) Water, A pest control agent containing the above, wherein the mixing ratio of component (B) and component (C) is 50:50 to 95:5 by weight, and the pest control agent according to claim 1. [2] The content of component (B) and component (C) is 3.0 to 10.0% by weight based on the total amount of the pest control agent, and the pest control agent. [3] A spray agent for pest control filled with the above pest control agent. To provide.

Effect of the Invention

[0007] According to the present invention, a pest control agent excellent in storage stability can be provided. Further, when such a pest control agent is used as a spray agent, contamination of the treated surface can be significantly reduced.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Mode for Carrying Out the Invention

[0009] Component (A) Artemisia princeps extract used in the present invention contains six types of natural pyrethrins, i.e., pyrethrin I, II, cinerin I, II, jasmolin I, II, impurities derived from plants, and a solvent. It is preferable to use Artemisia princeps extract having a natural pyrethrin concentration of 10% to 80%. The content of Artemisia princeps extract is usually 0.01 to 5.0% by weight based on the total amount of the pest control agent.

[0010] As the component (B) polyoxyethylene hydrogenated castor oil used in the present invention, it is preferable to use polyoxyethylene hydrogenated castor oil having an average addition mole number of ethylene oxide of 25 to 100 moles. Examples of the polyoxyethylene hydrogenated castor oil include Emalex CH-40 (manufactured by Kao Corporation, POE(40) hydrogenated castor oil), Emalex CH-60 (manufactured by Kao Corporation, POE(60) hydrogenated castor oil), Emalex CH-80 (manufactured by Kao Corporation, POE(80) hydrogenated castor oil), Nikkol HCO40 (manufactured by Nikko Chemicals Co., Ltd., POE(40) hydrogenated castor oil), Nikkol HCO60 (manufactured by Nikko Chemicals Co., Ltd., POE(60) hydrogenated castor oil), Nikkol HCO100 (manufactured by Nikko Chemicals Co., Ltd., POE(100) hydrogenated castor oil), etc., which are commercially available.

[0011] Examples of the component (C) ester compound used in the present invention include New Calgen D-935 (manufactured by Takemoto Yushi Co., Ltd., sorbitan oleate), Leodol SP-030V (manufactured by Kao Chemical Co., Ltd., sorbitan oleate), Leodol SP-S10V (manufactured by Kao Chemical Co., Ltd., sorbitan stearate), Leodol SP-P10 (manufactured by Kao Chemical Co., Ltd., sorbitan palmitate), etc., which are commercially available.

[0012] The compounding ratio of the component (B) and the component (C) is compounded so as to be 50:50 to 95:5 by weight ratio. By compounding so as to be within this range, a one-component aqueous pest control agent can be obtained.

[0013] The contents of the component (B) and the component (C) are preferably in the range of 3.0 to 10.0% by weight based on the total amount of the pest control agent.

[0014] From the viewpoint of reducing flammability, the water content of the component (D) water used in the present invention is preferably 85.0% by weight or more based on the total amount of the pest control agent.

[0015] The pest control agent of the present invention may further contain other components, for example, preservatives, bactericides, fungicides, deodorants, pH adjusters, chelating agents, and fragrances. Examples of the preservative include eucalyptus oil, phenoxyethanol, and parabens such as methylparaben. Examples of the fragrance include synthetic fragrances and vegetable oils, and particularly essential oils are desirable. Specific examples of the essential oils include hinoki oil, hiba oil, cedarwood oil, anise oil, camphor oil, clove oil, pimento 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.

[0016] The pest control agent of the present invention is filled in, for example, a spray container equipped with a manual pump and used as a non-aerosol type spray agent. Alternatively, it may be filled in a pressure-resistant container together with a propellant such as LPG or dimethyl ether and used as an aerosol type spray agent.

[0017] The above spray agent is used, for example, by directly spraying it on pests in living spaces such as kitchens, living rooms, and entrances. It is also possible to control pests by spraying in advance on hiding places and passageways of pests such as curtains, window screens, and under the floor.

[0018] The pests targeted for control by the pest control agent of the present invention include the following pests. Hemiptera pests: stink bugs such as Riptortus pedestris, Halyomorpha halys, Megacopta cribraria, Plautia stali, Lygus lucorum, Nezara antennata; bed bugs such as Cimex lectularius; louse bugs such as Polyactena vestita; Lepidoptera pests: Pyralidae such as Ostrinia furnacalis, Cnaphalocrocis medinalis, Chilo suppressalis; Diptera pests: mosquitoes such as Aedes aegypti, Aedes albopictus, Culex tritaeniorhynchus; Aedes genus such as Aedes vexans, Aedes togoi; midges; houseflies such as Musca domestica, Musca sorbens; Drosophila; flesh flies such as Sarcophaga peregrina; blowflies such as Chrysomya megacephala; tsetse flies; horseflies; black flies; stable flies; Coleoptera pests: weevils such as Sitophilus oryzae, Callosobruchus chinensis; darkling beetles such as Tenebrio molitor; Dermestidae such as Dermestes maculatus; Silvanidae such as Silvanus surinamensis; Blattodea pests: Blattella germanica, Periplaneta americana, Blatta orientalis, Blattella asahinai, Supella longipalpa; Staphylinidae pests: Paederus fuscipes, Paederus littoralis, Paederus tamulus; Phthiraptera pests: Menopon gallinae, Damalinia bovis, Linognathus vituli, Bovicola ovis; Mite pests: Mites such as Dermatophagoides farinae, Dermatophagoides pteronyssinus, Dermatophagoides yamato, Schizoglyphus mites; Acarids such as Tyrophagus putrescentiae; Glycyphagids such as Glycyphagus domesticus, Tyrophagus putrescentiae; Tarsonemids such as Tarsonemus granarius, Tarsonemus granarius; Spider mites such as Tetranychus urticae, Tetranychus kanzawai; Thrips such as Thrips tabaci; etc.;

Example

[0019] Hereinafter, the present invention will be further described by way of examples, but the present invention is not limited to these examples.

Example

[0020] 0.4 parts by weight of chrysanthemum extract (Sumitomo Natural Pyrethrin 75 manufactured by Botanical Resources Australia Pty Ltd, natural pyrethrin content: 75% by weight), 4.5 parts by weight of POE(40) hydrogenated castor oil (Emalex CH40 manufactured by Kao Corporation), and 0.5 parts by weight of sorbitan oleate (Leodol SP-O30V manufactured by Kao Corporation) were mixed to obtain a mixed solution. The mixed solution and 94.6 parts by weight of purified water were sufficiently mixed using a stirrer to obtain the pest control agent of the present invention.

Example

[0021] 0.4 parts by weight of chrysanthemum extract (Sumitomo Natural Pyrethrin 75 manufactured by Botanical Resources Australia Pty Ltd, natural pyrethrin content: 75% by weight), 4.5 parts by weight of POE(60) hydrogenated castor oil (Emalex CH60 manufactured by Kao Corporation), and 3.0 parts by weight of sorbitan oleate (New Calgen D-935 manufactured by Takemoto Yushi Co., Ltd.) were mixed to obtain a mixed solution. The mixed solution and 92.1 parts by weight of purified water were sufficiently mixed using a stirrer to obtain the pest control agent of the present invention. Comparative Example 1

[0022] 0.4 parts by weight of chrysanthemum extract (Sumitomo Natural Pyrethrin 75, manufactured by Botanical Resources Australia Pty Ltd, natural pyrethrin content: 75% by weight), 3.0 parts by weight of POE(40) hydrogenated castor oil (Emalex CH40, manufactured by Kao Corporation), were mixed to obtain a mixed solution. The said mixed solution and 96.6 parts by weight of purified water were sufficiently mixed using a stirrer to obtain a pest control agent. Comparative Example 2

[0023] 0.4 parts by weight of chrysanthemum extract (Sumitomo Natural Pyrethrin 75, manufactured by Botanical Resources Australia Pty Ltd, natural pyrethrin content: 75% by weight), 0.3 parts by weight of POE(25) hydrogenated castor oil (Emalex CH25, manufactured by Kao Corporation), 2.7 parts by weight of POE(40) hydrogenated castor oil (Emalex CH40, manufactured by Kao Corporation) were mixed to obtain a mixed solution. The said mixed solution and 96.6 parts by weight of purified water were sufficiently mixed using a stirrer to obtain a pest control agent. Comparative Example 3

[0024] 0.4 parts by weight of chrysanthemum extract (Sumitomo Natural Pyrethrin 75, manufactured by Botanical Resources Australia Pty Ltd, natural pyrethrin content: 75% by weight), 2.5 parts by weight of POE(40) hydrogenated castor oil (Emalex CH40, manufactured by Kao Corporation), 2.5 parts by weight of POE(6) sorbitan monooleate (Leodol TW-O106V, manufactured by Kao Corporation) were mixed to obtain a mixed solution. The said mixed solution and 94.6 parts by weight of purified water were sufficiently mixed using a stirrer to obtain a pest control agent.

[0025] (Storage Stability Test) 25 ml of each of the above pest control agents was respectively poured into a 30 ml capacity transparent screw tube (Maruem Screw Tube No. 6) and stored in a thermostat at -25°C for 16 hours. The screw tube was taken out from the thermostat and left standing in a room at room temperature of 25°C for 3 hours. The properties of various pest control agents before and after the storage stability test were visually observed, and the results are shown in the following table. Also, the properties of the pest control agents of Example 1, Comparative Example 1 and Comparative Example 2 after the storage stability test are shown in FIGS. 1 to 3.

[0026] [Table] TIFF2025096417000003.tif45127

[0027] As shown in the tables and figures, it was found that the pest control agents of Comparative Examples 1 to 3 had turbidity or precipitates after the storage stability test.

[0028] [Preparation of Spray Agent] The pest control agents of the present invention of Example 1 and Example 2 were filled into a commercially available trigger spray container, and a trigger (manufactured by Canon, model T-95) was attached to obtain a spray agent.

[0029] [Contamination Test] Igusa (10 cm square), a polyester curtain (10 cm square), a vinyl chloride wallpaper (10 cm square), and mortar (5 cm square) were pasted on a plywood board and placed on a table. The spray nozzle of the above spray agent was adjusted so as to face the central area of these objects, and 2 ml of the pest control agent was sprayed from a position 30 cm away from the objects. The presence or absence of contamination on the treated surface was confirmed 1 hour after spraying.

[0030] No contamination was confirmed on the treated surface of each object.

Claims

1. The following components (A) to (D): (A) Jojoba Extract, (B) polyoxyethylene hydrogenated castor oil, (C) General formula (I) and / or General formula (II) [In formula (I) or formula (II), R1 represents oleic acid, stearic acid or palmitic acid, R2 represents oleic acid, stearic acid, palmitic acid or a hydrogen atom, and R3 represents oleic acid, stearic acid, palmitic acid or a hydrogen atom. When R2 represents a hydrogen atom, R3 represents a hydrogen atom; when R2 represents oleic acid, R1 and R3 also represent oleic acid; when R2 represents stearic acid, R1 and R3 also represent stearic acid; When R2 represents palmitic acid, R1 and R3 also represent palmitic acid. An ester surfactant represented by the formula: (D) water; A pest control agent comprising the above compound, wherein the compounding ratio of component (B) to component (C) is 50:50 to 95:5 by weight.

2. 2. The pest control agent according to claim 1, wherein the content of component (B) and component (C) is 3.0 to 10.0% by weight based on the total amount of the pest control agent.

3. 3. A spray for pest control comprising the pest control agent according to claim 1 or 2 filled therein.

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