JPH0621041B2 - Acaricide - Google Patents

Description

TECHNICAL FIELD The present invention relates to an acaricide for indoor dust mites, and particularly to a benzyl benzoate acaricide having excellent penetration and diffusion properties for a long period of time.

2. Description of the Related Art Conventionally, house dust mites have been well known as indoor mites (indoor dust mites) that cause significant damage to humans. However, in recent years, allergies of tick mites and dust mites generated from tatami mats and house dust (lepidopteran mites) and pest mites that prey on them have become a problem, and bite bites have become a problem, and conventionally used for controlling pests for controlling these mites. Organophosphorus insecticides, carbamate insecticides, pyrethroid insecticides, etc. that have been used have been tried, but none of them are decisive factors for control, and there is no one that exerts permeation and diffusion properties for a long time From the aspect, the use of pyrethroid insecticides is increasing.

On the other hand, benzyl benzoate is widely used as an acaricide, but it has a drawback that it has a poor penetration and diffusion property and, therefore, a sufficient insecticidal effect cannot be obtained. In order to improve this drawback, it has been proposed to use fatty acid esters as a volatilization inhibitor (JP-A-55-122702). However, fatty acid esters cause stains and molds on sheets and dwarfs, and are therefore not necessarily suitable for use for these substances.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention An object of the present invention is to improve the permeation and diffusion properties of an acaricide containing benzyl benzoate as an active ingredient without using a pollutant.

Means for Solving the Problems The present inventors have found that when a compound having an aliphatic hydrocarbon as a main chain (particularly a paraffinic hydrocarbon) is used in combination with benzyl benzoate, diffusibility of benzyl benzoate into tatami mats is improved. It was confirmed that it would be extremely high.

That is, the present invention relates to an acaricide for indoor dust mites containing a compound having benzyl benzoate and an aliphatic hydrocarbon as a main chain.

The aliphatic hydrocarbon used in the present invention has a boiling point of 150 to 300.
C., more preferably 180 to 280.degree. C. (when it is out of this range, benzyl benzoate does not spread widely in the tatami mat), straight-chain paraffins, paraffins having side chains, naphthenes and them It may be a mixture of. Paraffins having side chains (paraffinic hydrocarbons) are preferable in terms of solubility. The most common is kerosene.

The amount of the compound having an aliphatic hydrocarbon as a main chain with respect to benzyl benzoate is 50 to 200 parts by weight of the latter for 0.1 to 5 parts by weight of the former, more preferably 0.5 to 2 parts by weight of the former for the latter. 80 to 170 parts by weight.

Further, the tick control composition of the present invention, known pest repellent,
Potency enhancers, antioxidants, insecticides, rodent control and repellents, bactericides, fungicides, herbicides, fertilizers, flavoring agents, coloring agents and the like can be added. Other pest repellents that can be included are N, N-diethyl-meta-toluamide, 2,3,4,
5-bis (Δ ₂ -butylene) -tetrahydrofurfural, di-
n-Propylisocinchomeronate, di-n-butylsuccinate, 2-hydroxyethyloctyl sulfide, etc. are used as efficacy enhancers N- (2-ethylhexyl) -bicyclo- [2,2,1] -5- Heptene-2,3-dicarboximide, 6- (propylpiperonyl) -butylcarbityl ether, etc., antioxidants such as butylhydroxyanisole, dibutylhydroxytoluene, tocopherol, γ-oryzanol, etc. as insecticides Is at least one or more pyrethroids such as the general name arethrin and its geometric and / or optical isomers, fenvalate, permethrin, phenothrin, D-resmethrin, DL-resmethrin and the like. -
Naphthylthiourea, cycloheximide, etc. are used as fungicides such as salicylic acid, p-chloro-m-xylenol, 2- (4 '
-Thiazoyl) benzimidazole and the like, and examples of the antifungal agent include α-bromocinnamic aldehyde, N-dimethyl-N-phenyl-N '-(fluorodichloromethyl) thiosulfamide and the like, but are not limited thereto. is not.

Especially when a pyrethroid compound is added, the acaricidal effect is further improved and a synergistic effect is exhibited. In this case, 0.5 or more, preferably 1 or more, of benzyl benzoate is preferably added to the pyrethroid compound 1.

The acaricidal composition of the present invention can be used in both liquid preparations and emulsions, and particularly preferably azole. By using azole, it is possible to minimize the blending of pollutant components. Examples of the propellant for an azole include CFC, dimethyl ether, liquefied petroleum gas and the like. Of these, dimethyl ether and liquefied petroleum gas are preferable. The proportion of the propellant to be mixed with the stock solution is usually parts by weight such that the former is 10 to 350 and the latter is 230 to 20, and preferably the former is 70 to 170 and the latter is 100 to 60.

The tick control composition of the present invention having various forms thus prepared has a habitat for ticks required for its use, for example, general households, grain warehouses, kitchens in dining rooms, furniture, closets, entrances, and washrooms. And the like, or by spraying on the animal body itself.

EFFECTS OF THE INVENTION The acaricidal agent of the present invention maintains an extremely excellent acaricidal effect associated with an osmotic diffusion effect for a long period of time.

The acaricidal effect of the present invention, indoor dust mites include, for example, Plutella xylostella mites, Dermatophagoides farinae, Dermatophagoides mite, Drosophila mite, dust mite, Tsutsugamushi, Dermatophagoides farinae, Kona mites, mite mites, acne mites, house dust mites, mites,
Triticum mites, clawed mites, lice mites, dust mites,
It is strong against dust mites, sardani, and mite mites. In particular, the effect of the mite, Dermatophagoides farinae, Dermatophagoides farinae, Dermatophagoides farinae, Dermatophagoides farinae, Dermatophagoides farinae, etc. was first found in the present invention.

Therefore, the tick control agent of the present invention is
By applying to carpets, food storage, and human bodies, animal bodies, and plant bodies, it exerts a reliable acaricidal effect against various mites that live or parasitize in these places, and by extension, animal bodies. It is possible to avoid bites, blood sucking and allergic diseases caused by the ticks.

Examples 1 to 5 Benzyl benzoate and kerosene were mixed and dissolved in the mixing ratios shown in Table 1 below. Fill this into an aerosol container,
At the same time when the valve portion was attached, the gas was filled to obtain a miticide aerosol of the present invention. When pouring the liquid into the tatami floor, a stainless steel pipe with a long tip hole (tip diameter 0.5 mm) was attached to the button nozzle and poured into the tatami floor.

5 ml of the product was injected into the tatami floor, and after 24 hours, the diffusion state of benzyl benzoate was confirmed by gas chromatography according to a conventional method.

As a result of the confirmation, it was confirmed that benzyl benzoate was diffused over a wide area by kerosene.

Examples 6 to 12 A mite-killing aerosol of the present invention having a long stainless steel pipe attached to the button nozzle was brought into close contact with filter paper, and 1 ml was sprayed, and after 5 minutes, the state of benzyl benzoate diffused was confirmed. The results are shown in Table-2.

Mixing with kerosene clearly improves the diffusion of benzyl benzoate.

Examples 13 to 37 Pyrethroid compounds and benzyl benzoate were dissolved in normal paraffins to obtain the miticide of the present invention. As shown in Table 3 below, kraft paper (5 cm x 5 cm) was treated with each, and air-dried to remove normal paraffin, to obtain a miticide in each sheet form.

Claims (3)

[Claims] 1. Benzyl benzoate and a boiling point of 150 to 300 ° C.
Acaricide for indoor dust mites, containing the aliphatic hydrocarbons of. 2. The acaricide according to claim 1, which is for aerosol. 3. The acaricide according to claim 1, wherein 500 to 2000 parts by weight of an aliphatic hydrocarbon is mixed with 1 part by weight of benzyl benzoate.