JP2001206807A - Termite-controlling agent - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a termite-controlling agent comprising a specific compound as an active component and having an excellent effect. SOLUTION: This termite-controlling agent comprises 5-tert-butyl-2-[2-(2,6- difluorophenyl)-4,5-dihydro-oxazol-4-yl]phenetole as an active component and also comprises cellulose additionally.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a termite controlling agent and a method for controlling termites.

[0002]

2. Description of the Related Art WO 93/22297 discloses a formula

[0003]

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[0004] 5-tert-butyl-2- [2-
(2,6-Difluorophenyl) -4,5-dihydrooxazol-4-yl] phenetole (hereinafter referred to as "ethoxazole") is described as an active ingredient of an insecticide.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to provide a new use of etoxazole, that is, a use as an active ingredient of a termite control agent having excellent efficacy.

[0006]

SUMMARY OF THE INVENTION The present invention relates to a termite controlling agent containing etoxazole as an active ingredient and further containing cellulose, and a method for controlling termites using the controlling agent. Or a sheet preparation or the like.

[0007]

When the termite control agent of the present invention is in the form of a powdery preparation, the preparation usually contains 0.005 to 20% by weight of ethoxazole and 30 to 99.995% by weight of cellulose powder. Can be contained. Cellulose powder can be obtained by a technique such as pulverizing woody cellulose after acid hydrolysis.

The termite control agent of the present invention, which is a powdery preparation, may further contain a powdery carrier. Examples of the powdery carrier that can be used in the present invention include synthetic hydrous silicon oxide, anhydrous silicic acid, aluminum oxide, kaolin,
Inorganic powders such as talc, clay, titanium oxide and magnesium carbonate; synthetic resin powders such as polyurethane, polyamide and polypropylene; and salts such as calcium stearate. The content of these powdery carriers in the termite control agent of the present invention can be generally in the range of 0 to 69.995% by weight.

The above-mentioned powdery preparation can usually be produced by mixing etoxazole and cellulose powder, and if necessary, other powdery carriers, and pulverizing the mixture.

The termite control agent of the present invention may be in the form of an aerosol preparation containing the above-mentioned powdery preparation.
The aerosol formulation is usually the powder formulation and the propellant described above,
The aerosol preparation may contain 0.1 to 10% by weight of a powdery preparation, and usually 20 to 90% by weight of a propellant. Examples of the solvent include esters such as isopropyl myristate, isopropyl palmitate, isopropyl decanoate and isopropyl laurate; and alcohols such as ethanol and isopropyl alcohol.

When the termite control agent of the present invention is in the form of a sheet preparation, etoxazole can be generally contained in the sheet preparation at a concentration of 0.01 to 20% by weight.

The sheet preparation can be produced by holding etoxazole on a sheet-like carrier such as cellulose paper according to a usual method. For example, a sheet preparation can be prepared by applying a solution or dispersion containing etoxazole to cellulose paper and drying. The solution or dispersion can be obtained by dissolving etoxazole in an appropriate solvent, but can be diluted with water containing a surfactant or a dispersant, if necessary.

Examples of termites that can be effectively controlled using the control agent of the present invention include: Mastote
rmitidae termite, Termopsi
dae termite [Zootermopsis genus,
Archotermopsis genus, Hodotermo
Psis genus, Porotermes genus, Storote
genus rmes], Kalottermitidae Levitermite [Kalotermes, Neoterme]
genus s, Cryptotermes, Incisite
genus rmes, Glyptotermes], Hodo
termitidae Scutellariae [Hodo
termes, Microhodotermes,
Genus Anacanthotermes], Rhinote
rmitidae, the termite family [Reticu]
littermes, Heterotermes, C
genus optotermes, Schedolinoter
mes], Serritermitidae Sawtooth Termite, Termitidae Termite [Ami
termes, Drepanotermes, Ho
genus pitalitermes, Trinerviter
genus mes, Macrotermes, Odontot
ermes, Microtermes, Nasut
genus itemes, Pericapritermes
Genus, Anoplotermes genus].

[0014] In particular, Japanese termites to be controlled in Japan include, for example, Yamato termites ( Retic)
ulitermes speratus), Formosan subterranean termite (Coptotermes formosanu
s ), American termite ( Incisiter)
mes minor ), termite ( Crypt )
otermes domestices ), Japanese termite ( Odontotermes formosan)
us ), Koshung termites ( Neotermesko)
shunensis), Satsuma termites (Glypto
termes satsumensis), Nakajima termites (Glyptotermes nakajima
i ), Catan termites ( Glyptotermes f
uscus ), the termite ( Glyptoterm )
es kodamai), comb Moto termites (Glyp
termes kusimensis ), termites ( Hodotermopsis japonic)
a ), Copter termite ( Coptoteme )
s guangzhoensis), Amami termites (Reticulitermes miyatake
i ), termites ( Reticulitermes )
flaviceps amamianus ), termites ( Reticulitermes s)
p. ), Takasago Termites ( Nasutermes )
takasagoensis ), Nitobe termite ( P
ericapriterme nitobei ), Sinocapritermes mus
hae ).

The termite control agent of the present invention can be applied to ant trails, wood damaged by termites, soil or wood where habitats of termites live. In application to an ant passage, it is preferable to break a part of the ant passage and apply the termite controlling agent of the present invention inside the ant passage. When applied to wood damaged by termites or a habitat of termites, a sheet preparation may be attached to the damaged wood, or a powdery preparation may be sprayed on the wood. When spraying a powdery formulation on wood, it can be treated by making holes as necessary.

The application amount of the termite control agent of the present invention can be changed depending on the degree of damage and other conditions.
When soil or wood is treated with the termite control agent of the present invention, the amount of etoxazole is usually 0.1 ml / m ² .
It can be about 01 to 100 g, preferably about 0.1 to 100 g.

[0017]

Next, the present invention will be described more specifically with reference to formulation examples and test examples.

Formulation Example 1 1 part by weight of etoxazole and 99 parts by weight of crystalline cellulose powder (trade name: Avicel, manufactured by Asahi Kasei Kogyo) are mixed,
The termite control agent of the present invention is obtained.

Formulation Example 2 5 parts by weight of etoxazole and 95 parts by weight of crystalline cellulose powder are mixed to obtain the termite controlling agent of the present invention.

Formulation Example 3 5 parts by weight of etoxazole and 95 parts by weight of wood flour are mixed,
The termite control agent of the present invention is obtained.

Formulation Example 4 0.5 parts by weight of etoxazole, crystalline cellulose powder 40
Parts by weight and 59.5 parts by weight of talc are mixed to obtain the termite controlling agent of the present invention.

Formulation Example 5 2 parts by weight of etoxazole, 50 parts by weight of crystalline cellulose powder and 48 parts by weight of clay are mixed to obtain a termite controlling agent of the present invention.

Formulation Example 6 2 ml of an acetone solution containing 15 mg of etoxazole
Is impregnated into filter paper (cellulose paper having a diameter of 9 cm) and dried to obtain the termite control agent of the present invention.

Formulation Example 7 5 ml of an acetone solution containing 50 mg of etoxazole
Is impregnated into kraft paper (cellulose paper of 15 cm × 15 cm) and dried to obtain the termite control agent of the present invention.

Next, test examples will be described.

Test Example 1 A filter paper (cellulose paper having a diameter of 33 mm, manufactured by Advantech Co.) was impregnated with 1 ml of an acetone solution containing 2 mg of etoxazole, and dried to obtain a termite-controlling agent of the present invention obtained by drying. In a plastic cup. Five holes are formed in advance on the lower side surface of the plastic cup as entrances and exits for termites.
The plastic cup was placed in a large cup that had been released with 100 termites. The mortality was observed while appropriately supplying water into the large cup. As a result, the mortality after 9 weeks was 93%.

Test Example 2 10 mg of the termite control agent of the present invention obtained in Formulation Example 2 was placed in an aluminum dish having a diameter of 4 cm, and the aluminum dish was placed in a plastic cup having a bottom surface covered with moistened filter paper having a diameter of 5.5 cm. Put in. Thirty house termites were released into an aluminum dish, and the mortality at 3 hours and 18 hours was observed. As a result, the rate of trophozoites after 3 hours was 0%, and the rate after 18 hours was 100%.

Further, the termites that died in the above test were transferred to a plastic petri dish having a diameter of 9 cm covered with moistened filter paper, and the same number of healthy termites as the dead termites were released into the plastic petri dish. After 19 days, all termites were observed dead.

Test Example 3 10 mg of the termite control agent of the present invention obtained in Preparation Example 3 was placed in an aluminum dish having a diameter of 4 cm, and the aluminum dish was placed in a plastic cup having a bottom surface covered with moistened filter paper having a diameter of 5.5 cm. Put in. Thirty house termites were released into an aluminum dish, and the mortality at 3 hours and 18 hours was observed. As a result, the mortality after 3 hours was 6.7%, and the mortality after 18 hours was 93%.

Further, the 14 termites that died in the above test were transferred to a plastic petri dish having a diameter of 9 cm covered with moistened filter paper, and the same number of healthy termites as the dead termites were released into the plastic petri dish. After 21 days, all termites were observed dead.

As shown in Test Examples 2 and 3 above, the termite control agent of the present invention has a low mortality after 3 hours, but a very excellent mortality after 18 hours. The activity is also transmitted to other termites that have come into contact with the corpse.

[0032]

EFFECT OF THE INVENTION The termite controlling agent of the present invention takes a little time to exhibit its effect, and its activity is transmitted to other termites. The killed termites also kill many other termites in the nest. Therefore, the termite controlling agent of the present invention has a feature that, unlike the conventional fast-acting termite controlling agent, can control many termites in the nest, and is extremely effective.

Claims (6)

[Claims] (1) 5-tert-butyl-2- [2- (2,6
-Difluorophenyl) -4,5-dihydrooxazol-4-yl] phenetole as an active ingredient,
A termite control agent further comprising cellulose. 2. The termite control agent according to claim 1, which is in the form of a powdery preparation. 3. 0.005 to 20% by weight of 5-tert-butyl-2- [2- (2,6-difluorophenyl)-
The termite control agent according to claim 2, which contains 4,5-dihydrooxazol-4-yl] phenetol and 30 to 99.995% by weight of cellulose. 4. The termite control agent according to claim 1, which is in the form of a sheet preparation. 5. 0.01 to 20% by weight of 5-tert-butyl-2- [2- (2,6-difluorophenyl) -4,
The termite control agent according to claim 4, which comprises [5-dihydrooxazol-4-yl] phenetol. 6. A method for preparing 5-tert-butyl-2- [2- (2,6
-Difluorophenyl) -4,5-dihydrooxazol-4-yl] phenetole as an active ingredient,
A method for controlling termites, further comprising applying a termite controlling agent containing cellulose to an ant path, wood damaged by termites, or a habitat of termites.