JPH08225414A - Emulsifying composition for controlling termites and method for using the same - Google Patents

Abstract

PURPOSE: To provide an emulsifying composition comprising a specific active ingredient, a low polar solvent, an emulsifier, a foam stabilizer and a water-soluble solvent, capable of preventing deposition of crystals from stored preparation at a low temperature and a spraying liquid used by diluting with water and suitable for combinedly using these components with a foaming agent in treatment and carrying out foaming treatment under the floor, etc., of house. CONSTITUTION: This composition contains (A) 5-amino-3-cyano-1-(2,6-dichloro-4- trifluoromethylphenyl)-4-trifluoromethylsulfynylpyrazole (A1 ) and a pyrethroid- based compound (A2 ) as active ingredients and further contains (B) a low polar solvent (e.g. N-octyl-2-pyrrolidone or ethylene glycol mono-2-ethylhexyl ether), (C) an emulsifier and (D) a foam stabilizer and (E) a water-soluble solvent. Furthermore, components A1 , A2 , B, C, D and E are each used in amounts of 1-5 pts.wt., 1-10 pts.wt., 5-20 pts.wt., 1-5 pts.wt. and the balance based on 100 pts.wt. composition.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to 5-amino-3-cyano-1- (2,6-dichloro-4-trifluoromethylphenyl) -4-trifluoromethylsulfinylpyrazole (hereinafter referred to as compound A) and In an emulsifying composition containing a pyrethroid compound as an active ingredient, a low polar solvent, an emulsifier, a foam stabilizer, and an emulsifying composition for controlling termites characterized by comprising a water-soluble solvent, and a method for using the same. The emulsifiable composition is to prevent crystal precipitation from a spray liquid when used in a formulation at low temperature during storage and when diluted with water, and used in combination with a foaming agent at the time of treatment. The emulsifiable composition is suitable for a foaming treatment method under the floor of a house.

[0002]

2. Description of the Related Art There are two main types of control for termites, namely, wood treatment for controlling termites by applying them to wood or the like, and soil treatment for controlling chemicals by spraying chemicals on soil under the floor. As for the method, not only the control work in a narrow space under the floor is inefficient, but also it is not preferable from the viewpoint of health management of workers. Therefore, a foaming construction method in which a drug is applied in a foam form is becoming mainstream.

[0003]

The pest control agent containing compound A, which is one of the active ingredients of the present invention, as an active ingredient is also useful as a termite control agent, and other pest control ingredients,
For example, it is possible to control pests extremely effectively by using them together with pyrethroid compounds.
However, since compound A has poor solubility in organic solvents and its low solubility at low temperatures, precipitation of crystals in the formulation during storage is observed. Also, because termite control companies usually prepare chemicals on the day before the work, and the drug solution remaining on the day's work is often used to make up for the deficiency, so the crystalline active ingredient is used. With a formulation in which the emulsification is poor and crystals are precipitated within a few hours after preparation of the spray solution, a large amount of the chemical solution is wasted and the nozzle of the pump used for foaming is clogged.

In the invention described in Japanese Patent Publication No. 2-7282, acetophenone added with an emulsifier and a solvent compatible with acetophenone are used to prevent crystal precipitation of the active ingredient. The invention described in Japanese Patent No. 69230 discloses a dinitroaniline herbicide and N-allyl-
Use of an emulsifier and an alicyclic ketone as a solvent to obtain physical stability of a liquid herbicide composition containing N'-alkoxyurea herbicide as an active ingredient under transportation, storage and use conditions. Is disclosed. The present inventors have conducted intensive studies to solve these problems, and as a result, completed the emulsifiable composition of the present invention.

[0005]

The emulsifiable composition for controlling termites of the present invention comprises a compound A (5-amino-3-cyano-1).
-(2,6-dichloro-4-trifluoromethylphenyl) -4-trifluoromethylsulfinylpyrazole) and a pyrethroid compound as an active ingredient in an emulsifying composition, a low polar solvent, an emulsifier, a foam stabilizer, and The emulsifiable composition can be produced by containing a water-soluble solvent and, if necessary, using a polar solvent or an aromatic solvent. Compound A used in the emulsifying composition for controlling termites of the present invention is disclosed in JP-A-63-316.
Known compounds described in Japanese Patent No. 771 are compounds having an insecticidal effect against arthropods, plant nematodes, protozoan pests, termites, agricultural pests and the like.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Pyrethroid compounds that can be used in the present invention include, for example, 1. Allethrin [dl-3-allyl-2-methyl-4-
Oxo-2-cyclopentenyl dl-cis, trans-
Chrysanthemate]. 2. Etofenprox [2- (4-ethoxyphenyl) -2-methylpropyl 3-phenoxybenzyl
ether〕. 3. Cycloprothrin [(RS) -α-cyano-3-phenoxybenzyl (RS) -2,2-dichloro-1-
(4-Ethoxyphenyl) cyclopropanecarboxylate].

4. Cyhalothrin [(RS) -α-cyano-3-phenoxybenzyl (Z)-(1RS, 3R
S) -3- (2-Chloro-3,3,3-trifluoropropenyl) -2,2-dimethylcyclopropanecarboxylate]. 5. Cyfluthrin [(RS) -α-cyano-4-fluoro-3-phenoxybenzyl (1RS, 3RS)-
(1RS, 3RS) -3- (2,2-dichlorovinyl)
-2,2-Dimethylcyclopropanecarboxylate]. 6. Cypermethrin [(RS) -α-cyano-3-phenoxybenzyl (1RS, 3RS)-(1RS, 3S
R) -3- (2,2-Dichlorovinyl) -2,2-dimethylcyclopropanecarboxylate]. 7. Pyrethrin.

8. Tralomethrin [(S) -α-cyano-3-phenoxybenzyl (1R, 3S) -2,2-
Dimethyl-3- (1,2,2,2-tetrabromoethyl) cyclopropanecarboxylate]. 9. Fenvalerate [(RS) -α-cyano-3-phenoxybenzyl (RS) -2- (4-chlorophenyl) -3-methylbutanoate]. 10. Fenpropatrine [(RS) -α-cyano-3-
Phenoxybenzyl 2,2,3,3-tetramethylcyclopropanecarboxylate]. 11. Flucitrinate [(RS) -α-cyano-3-phenoxybenzyl (S) -2- (4-difluoromethoxyphenyl) -3-methylbutyrate]. 12. Permethrin [3-phenoxybenzyl (1R
S, 3RS)-(1RS, 3RS)-(2,2-Dichlorovinyl) -2,2-dimethylcyclopropanecarboxylate]. 13. Bifenthrin [2-methylbiphenyl-3-ylmethyl (Z)-(1RS, 3RS) -3- (2-chloro-3,3,3-trifluoroprop-1-enyl)-
2,2-Dimethylcyclopropanecarboxylate].

14. Silafluofene [(4-ethoxyphenyl) [3- (3-phenoxy-4-fluorophenyl) propyl] (dimethyl) silane]. 15. Resmethrin [5-benzyl-3-furylmethyl d
1-cis, trans-chrysanthemate]. 16. Tefluthrin [2,3,5,6-tetrafluoro-
4-Methylbenzyl- (1RS) -cis-3- (Z-2
-Chloro-3,3,3-trifluoroprop-1-enyl) -2,2-dimethylcyclopropanecarboxylate]. 17. Acrinathrin [(S) -α-cyano-3-phenoxybenzyl (Z)-(1R, 3S) -2,2-dimethyl-3- [2- (2,2,2-trifluoro-1-tri Fluoromethylethoxycarbonyl) vinyl] cyclopropanecarboxylate]. 18. Praletrin [(RS) -2-methyl-4-oxo-3-prop-2-enylcyclopent-2-enyl (1RS) -cis-trans-2,2-dimethyl-3-
(2-Methylprop-1-enyl) cyclopropanecarboxylate].

19. Cismethrin [5-benzyl-3-furylmethyl (1R) -trans-2,2-dimethyl-3
-(2-Methylprop-1-enyl) cyclopropanecarboxylate. 20. d-phenothrin [3-phenoxybenzyl (1R
S) -cis-trans-2,2-dimethyl-3- (2-
Methylprop-1-enyl) cyclopropanecarboxylate]. 21. Deltamethrin [(S) -α-cyano-3-phenoxybenzyl (1R) -cis-3- (2,2-dibromovinyl) -2,2-dimethylcyclopropanecarboxylate]. 22. Tetramethrin [cyclohex-1-ene-1,2
-Dicarboximidomethyl (1RS, 3RS, 1R
S, 3SR) -2,2-Dimethyl-3- (2-methylprop-1-enyl) cyclopropanecarboxylate]. 23. Fluvalinate [(RS) -α-cyano-3-phenoxybenzyl N- (2-chloro-α, α, α-trifluoro-p-tolyl) -DL-valinate]. One or two or more pyrethroid compounds selected from the group of compounds can be exemplified, but the present invention is not limited to these pyrethroid compounds.

The compound A and the pyrethroid compound are compounded in the composition in an amount of 1 to 5 parts by weight of the compound A and 0.1 to 1 part of the pyrethroid compound in 100 parts by weight of the composition.
It may be added in the range of 0 parts by weight. The low-polarity solvent used in the present invention is one or two selected from a cyclic amide solvent having a water solubility of 10% or less at 20 ° C. or a glycol ether solvent having a water solubility of 10% or less at 20 ° C.
As the cyclic amide-based solvent, one or more kinds of low-polarity solvents, such as N-octyl-2-pyrrolidone, N-dodecyl-2-pyrrolidone or N-dodecylcaprolactam, and the glycol ether-based solvent are, for example, ethylene glycol. Mono-2-ethylhexyl ether, ethylene glycol monohexyl ether, diethylene glycol monohexyl ether, ethylene glycol monophenyl ether, ethylene glycol monobenzyl ether, propylene glycol monophenyl ether, dipropylene glycol monopropyl ether, ethylene glycol dibutyl ether or diethylene glycol dibutyl ether. Etc. can be used, and the amount thereof may be blended in the range of 1 to 20 parts by weight in 100 parts by weight of the present composition.

As the emulsifier, one or more emulsifiers selected from nonionic or anionic emulsifiers can be used. Examples of the nonionic emulsifier include polyoxyethylene alkyl phenyl ether and polyoxyethylene alkyl ether. , Polyethylene glycol fatty acid ester, sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene sorbit fatty acid ester, polyoxyethylene polyoxypropylene alkyl ether, polyoxyethylene castor oil, etc. as anionic emulsifiers,
Examples thereof include alkyl sulfates, polyoxyethylene alkyl ether sulfates, sulfosuccinates, taurine derivatives, sarcosine derivatives, phosphoric acid esters, alkylbenzene sulfonates, and the like, preferably polyoxyethylene styryl phenyl ether, poly It is preferable to use a mixture of three kinds of oxyethylene castor oil and calcium alkylbenzene sulfonate, and polyoxyethylene nonylphenyl ether sulfate ammonium salt in an amount of 5 to 20 parts by weight per 100 parts by weight of the present composition. It should be mixed.

A foam stabilizer may be added in order to maintain a stable foam state during foaming of the composition of the present invention. Examples of the foam stabilizer include decyl alcohol, dodecyl alcohol, tetradecyl alcohol and hexa. One or more higher alcohols selected from decyl alcohol and the like can be used, and the amount thereof to be used may be 1 to 5 parts by weight in 100 parts by weight of the present composition. The water-soluble solvent in the composition of the present invention, for example, the general formula (I)

Embedded image RO (CH ₂ CH ₂ O) nH (I) (In the formula, R represents an alkyl group having 1 to 6 carbon atoms, and n
Represents an integer of 1 to 8). One or more selected from glycol ether solvents represented by can be used, for example, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monopropyl ether, diethylene glycol monobutyl ether, triethylene glycol monomethyl ether, Examples of glycol ether solvents such as triethylene glycol monoethyl ether, triethylene glycol monopropyl ether, triethylene glycol monobutyl ether, and polyethylene glycol (n = 4 to 6) monomethyl ether can be used. Active ingredient in 100 parts by weight of
The rest may be the balance of the auxiliary agent and other components.

If desired, a polar solvent and an aromatic solvent may be used in the composition.
For example, 1 selected from N-methyl-2-pyrrolidone, cyclohexanone, N, N-dimethylformamide, etc.
1 type or 2 or more types of polar solvents can be exemplified, and the amount to be used may be selected from 0 to 15 parts by weight and used,
The aromatic solvent is selected from petroleum fractions, catalytic cracking oil fractions or synthetic oils, and has a boiling point of 200 ° C. or higher and is a liquid solvent at room temperature, for example, monobenzene or polyalkylbenzenes such as alkylbenzene and trimethylbenzene, Methylnaphthalene, dimethylnaphthalene, dimethylmonopropylnaphthalene, dimethyldipropylnaphthalene, etc., naphthalene such as phenylxylylnaphthalene, 1-phenyl-1-xylylethane, alkyldiphenylalkanes such as alkyldiphenylethane, indene derivatives,
Examples thereof include triallyl dialkanes such as triallyl diethane, dibenzyl ether, phthalic acid diesters and the like, and the amount used is in the range of 0 to 20 parts by weight.

The emulsifiable composition of the present invention may be produced in the same manner as in the production of ordinary pesticide emulsions. As the foaming agent used in the foaming construction method of diluting the emulsifying composition of the present invention with water and adding the foaming agent to foam and treat, a surfactant, a foam stabilizer and a solvent if necessary. , Water, and their blending amount is not particularly specified,
Examples of the surfactant include polyoxyethylene alkylphenyl ether sulfate sodium salt, polyoxyethylene alkylphenyl ether sulfate ammonium salt, polyoxyethylene alkylphenyl ether sulfate amine salt, alkyl sulfate sodium salt, alkyl sulfate amine One or more selected from salts and alkylsulfate ammonium salts can be used, and as the foam stabilizer and solvent, for example, the foam stabilizer and water-soluble solvent that can be used in the present composition are used. can do.

The emulsifying composition for controlling termites of the present invention is, for example, a termite (Coptotermes formosanus Shirak).
i), Yamato termite (Reticulitermes speratus (Kolb
e)), Taiwanite termite (Odontotermes formosanus)
(Shiraki)) and Daikoku termites (Cryptotermes dom)
Esticus (Haviland)) has a remarkable anticidal effect and a chemical treatment layer penetration inhibiting effect on all termites that harm homes, etc. by the foaming method. foams was diluted with water to dose a defined, it suffices to process the drug in a small space under the floor or the like by the injection nozzle using a pump or the like, the amount of processing 0.1g~ amount of active ingredient per 1 m ² It suffices to select from a range of 5.0 g for processing. Typical examples, comparative examples and test examples of the present invention will be illustrated below, but the present invention is not limited to these.

[0017]

【Example】

Example 1 1 part of compound A, 1 part of bifenthrin, N-octyl-
3 parts of 2-pyrrolidone, 7 parts of dimethyldipropylnaphthalene, 5 parts of lauryl alcohol, a mixture of polyoxyethylene alkylphenyl ether, polyoxyethylene castor oil and calcium alkylbenzene sulfonate (Haimar 1071, Matsumoto Yushi-Seiyaku Co., Ltd.) 10
Part, polyoxyethylene nonyl phenyl ether sulfate ammonium salt (Hitenol N-08, Daiichi Kogyo Seiyaku Co., Ltd.) 2 parts and polyoxyethylene glycol monomethyl ether 71 parts are uniformly dissolved to obtain an emulsifiable composition of the present invention. Got

Examples 2 to 28 In the same manner as in Example 1, emulsifiable compositions of the present invention were obtained with the compositions shown in Tables 1 to 6.

[Table 1]

[0019]

[Table 2]

[0020]

[Table 3]

[0021]

[Table 4]

[0022]

[Table 5]

[0023]

[Table 6]

Comparative Examples 1 and 2 In the same manner as in Example 1, emulsifiable compositions having the compositions shown in Table 6 were obtained.

[Table 7] Note: Solpol 3005X (mixture of polyoxyalkylene allyl phenyl ether, polyoxyalkylene allyl phenyl ether condensate and calcium alkylbenzene sulfonate, Toho Chemical Industry Co., Ltd.)

Test Example 1 Crystal Precipitation Test in Diluted Solution 100 ml beaker was charged with 100 ml of 3 times hard water, and the emulsified composition 1.0 prepared in Examples and Comparative Examples was added to the solution.
After adding g, the mixture was thoroughly stirred, mixed, and allowed to stand at 5 ° C. for 24 hours, then, the diluted solution was passed through a sieve having an opening of 45 μm, and the amount of crystals remaining on the sieve was visually determined according to the following criteria. The results are shown in Table 8.

[0026]

[Table 8]

Test Example 2 Foamability Test The emulsifying compositions prepared in Examples and Comparative Examples were diluted to a predetermined ratio and used as a foaming agent (Dolfoam: manufactured by Nippon Pesticides Co., Ltd.) 3
% Of the chemical liquid was foamed using a spraying machine for foaming construction (Torutoru II type head, manufactured by Nippon Pesticides Co., Ltd.), and the foamability was visually evaluated according to the following criteria. Judgment Criteria ◯: Same level as when foaming agent Dorfoam only was foamed Δ: Inferior to when foaming agent Dorfoam was foamed only ×: No foaming is shown in Table 9.

[0028]

[Table 9] Table 9 The emulsifiable composition for controlling termites of the present invention does not cause crystal precipitation even in a spray solution diluted with water at the time of use, and is useful as a foaming formulation for controlling termites.

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Claims (7)

[Claims] 1. 5-amino-3-cyano-1- (2,6
-Dichloro-4-trifluoromethylphenyl) -4-
An emulsified composition containing trifluoromethylsulfinylpyrazole and a pyrethroid compound as active ingredients, which comprises a low polar solvent, an emulsifier, a foam stabilizer and a water-soluble solvent, and is an emulsified composition for controlling termites. 2. 5-amino-3-cyano-1- (2,6
-Dichloro-4-trifluoromethylphenyl) -4-
The emulsifying composition for controlling termites according to claim 1, wherein the pyrethroid compound is 0.1 to 10 parts by weight with respect to 1 part by weight of trifluoromethylsulfinylpyrazole. 3. The control of termites according to claim 1, wherein the low-polarity solvent is one or more selected from cyclic amide solvents or glycol ether solvents having a water solubility at 20 ° C. of 10% or less. Emulsifiable composition for use. 4. The cyclic amide solvent is N-octyl-2-
Pyrrolidone, N-dodecyl-2-pyrrolidone or N-dodecylcaprolactam, and the glycol ether solvent is ethylene glycol mono-2-ethylhexyl ether, ethylene glycol monohexyl ether, diethylene glycol monohexyl ether, ethylene glycol monophenyl ether, ethylene glycol monophenyl ether. The emulsified composition for controlling termites according to claim 3, which is benzyl ether, propylene glycol monophenyl ether, dipropylene glycol monopropyl ether, ethylene glycol dibutyl ether or diethylene glycol dibutyl ether. 5. 5-amino-3-cyano-1- (2,6-dichloro-4-trifluoromethylphenyl) -4-trifluoromethylsulfinyl in 100 parts by weight of an emulsifying composition for controlling termites. Pyrazole 1 to 5 parts by weight, pyrethroid compound 0.1 to 10 parts by weight, low polarity solvent 1 to 20 parts by weight, emulsifier 5 to 20 parts by weight, foam stabilizer 1 to 5 parts by weight, and The emulsified composition for controlling termites according to claim 1, wherein the balance comprises a water-soluble solvent. 6. An emulsifying agent for controlling termites, which comprises diluting the emulsified composition for controlling termites according to claim 1 or 5 with water and adding a foaming agent for foaming treatment. Of using the sexual composition. 7. The method for using the emulsifying composition for controlling termites according to claim 6, wherein the treatment place is under the floor of the house.