JPH11240809A - Termite control composition for soil treatment - Google Patents

Abstract

(57) Abstract: 2-Methylbiphenyl- as an active ingredient
3-ylmethyl (Z)-(1RS) -cis-3- (2-
Soil containing chloro-3,3,3-trifluoroprop-1-enyl) -2,2-dimethylcyclopropanecarboxylate and comprising an aromatic solvent, an emulsifier, a water-soluble solvent and water. Termite control composition for treatment. [Effect] A termite control agent for soil treatment in the form of a non-dangerous aqueous preparation, which has the same or greater effect of preventing perforation as compared to conventional emulsions and has a reduced effect on the human body and the environment. Things are obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a termite controlling composition for soil treatment in an aqueous form.

[0002]

2. Description of the Related Art 2-methylbiphenyl-3-ylmethyl (Z)-(1RS) -cis-3- (2-chloro-3, an active ingredient of the termite controlling composition for soil treatment of the present invention.
3,3-trifluoroprop-1-enyl) -2,2-
Dimethylcyclopropanecarboxylate (generic name: bifenthrin) is a known termitic component having a low dose and a high termiticidal effect on termites, and is often used in emulsions as a termite controlling agent for soil treatment, for example.

[0003]

The emulsion used as a termite control agent for soil treatment contains a large amount of organic solvent. As time elapses, the organic solvent evaporates into the environment, which is a problem. In addition, most of the organic solvents used in the emulsion correspond to flammable liquids of Class 4 of dangerous substances, so that storage places and storage quantities are severely restricted. Therefore, development of a termiticide for soil treatment in the form of an aqueous preparation is strongly desired.

[0004]

Means for Solving the Problems The inventors of the present invention have made intensive studies to solve these problems, and as a result, they contain bifenthrin as an active ingredient and use an aromatic solvent, an emulsifier, a water-soluble solvent and water. Thus, a novel termite control composition for soil treatment in an aqueous form has been found.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION Various auxiliary components and the like which can be used in the present invention will be illustrated below, but these auxiliary components are not limited to the following exemplified compounds. The aromatic organic solvent used in the present invention is selected from petroleum fractions, catalytic cracking oil fractions and synthetic oils, and has a boiling point of 200
Solvents that are liquid at room temperature or above, such as mono- or polyalkylbenzenes such as hexylbenzene, nonylbenzene, and trimethylbenzene; , Alkyldiphenylalkanes such as 1-phenyl-1-xylylethane and alkyldiphenylethane, indene derivatives, triaryldialkanes such as triaryldieethane, dibenzyl ether, phthalic acid esters and the like. These aromatic organic solvents can be used alone or in admixture of two or more, and the amount of the organic solvent used is not particularly limited as long as the hardly water-soluble component such as an active component can be stably retained in the composition. The composition 10 of the present invention
What is necessary is just to select and use suitably from the range of 0.05-20 weight part with respect to 0 weight part. Among the above-mentioned aromatic organic solvents, preferred solvents for the present invention include one or more naphthalene-based solvents or a mixed solvent containing these.

As the emulsifier used in the present invention, a nonionic or anionic emulsifier can be used. Examples of the nonionic emulsifier include polyoxyalkylene alkylphenyl ether, polyoxyalkylene alkyl ether, polyalkylene glycol fatty acid ester, and the like.
Sorbitan fatty acid ester, polyalkylene sorbitan fatty acid ester, polyalkylene sorbite fatty acid ester, polyoxyethylene polyoxypropylene alkyl ether, polyoxyalkylene castor oil ether, etc., as anionic emulsifiers, for example, alkyl sulfate, polyoxyalkylene alkyl ether Examples thereof include sulfates, sulfosuccinates, taurine derivatives, sarcosine derivatives, phosphates, and alkylbenzene sulfonates, and these emulsifiers can be used alone or as a mixture of two or more.

Among these emulsifiers, preferred emulsifiers for the present invention include, for example, a mixture of three kinds of polyoxyethylene styryl phenyl ether, polyoxyethylene styryl phenyl ether formaldehyde condensate and calcium dodecylbenzenesulfonate. Is good. The amount of the emulsifier used may be appropriately selected from the range of 0.2 to 40 parts by weight based on 100 parts by weight of the composition of the present invention.

The water-soluble solvent used in the present invention includes, for example, the general formula (I) RO (C ₂ H ₄ ) m (C ₃ H ₆ O) nH (I) (wherein R is a hydrogen atom or a carbon atom Represents an alkyl group of Formulas 1 to 6, m and n each represent an integer of 0 to 6, and m + n represents 1
Represents an integer of from 6 to 6. ) Or one or more water-soluble solvents selected from glycol or glycol ether solvents represented by the formula (1), such as ethylene glycol, propylene glycol, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, and diethylene glycol monosolvent. Propyl ether, diethylene glycol monobutyl ether, triethylene glycol monomethyl ether, triethylene glycol monoethyl ether, triethylene glycol monopropyl ether, triethylene glycol monobutyl ether, dipropylene glycol monomethyl ether, dipropylene glycol monoethyl ether, dipropylene glycol mono Propyl ether, dipropylene glycol monobutyl ether, Ethylene glycol (n = 4 to 6) glycol such as monomethyl ether, or a solvent belonging to the polyalkylene glycol monoalkyl ether and the like can be exemplified.

The amount of the water-soluble solvent used depends on the composition of the present invention.
What is necessary is just to select and use suitably from the range of 0.2-40 weight part with respect to 0 weight part. The content of water contained in the termite controlling composition for soil treatment of the present invention is an active ingredient, an aromatic solvent,
The emulsifier and the water-soluble solvent are added in addition to the required amount, and are not particularly limited as long as the composition after mixing becomes a non-dangerous substance, but is preferably 30 to 9
0 parts by weight.

[0010] The termite controlling composition for soil treatment of the present invention can also use a stabilizer for stabilizing the physical properties of the formulation, and use auxiliary components such as an antioxidant, a preservative, and a coloring agent. You can also. Examples of the stabilizer include stabilizers such as polyhydric alcohols such as diethylene glycol and hexylene glycol, and epoxy group-containing compounds such as aliphatic glycidyl ether and aromatic glycidyl ether.

As the antioxidant, for example, 2,6-di-
monophenolic antioxidants such as tert-butyl-p-cresol and butylated hydroxyanisole, 2,2′-
Bisphenol-based antioxidants such as methylenebis (4-methyl-6-tert-butylphenol); polymeric phenolic antioxidants such as tocopherol; sulfur-based antioxidants such as 3,3'-thiodipropionate; triphenyl Phosphorus antioxidants such as phosphates can be exemplified. As preservatives, for example, sorbic acid and its salts,
Preservatives such as benzoic acid and salts thereof, propylparaben, dehydroacetates, parachloromethaxylenol, and 1,2-benzoisothiazolin-3-one can be exemplified. Examples of the coloring agent include phthalocyanine blue, food blue 1, food blue 2, food red 2, food red 3, food red 102, food red 104, food red 105, food red 106, food red 106 Coloring agents such as Yellow No. 4, Edible Green No. 3, and Copper Chlorofin Sodium can be exemplified.

The preparation of the composition of the present invention may be carried out in the same manner as in the usual method for preparing an emulsion. The termite controlling composition for soil treatment of the present invention includes, for example, house termites (Coptote).
rmes formosanus Shiraki), Reticulit
ermes speratus (Kolbe)), termites (Odontoter
mes formosanus (Shiraki)) and termites (Crypt
All termites that damage houses such as otermes domesticus (Haviland) have a remarkable anticidal effect and soil-penetrating effect by chemical treatment on all termites. The termite controlling composition for soil treatment of the present invention has a remarkable termiticidal effect and an effect of preventing the penetration of a chemical-treated layer even by a foaming method, for example, in addition to treating the soil under the floor with a chemical solution to control the soil. Foam construction method was diluted with water to a dose of defining the present invention composition and the blowing agent may be processed to 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 1 m ² What is necessary is just to select and process from 0.1 g-5.0 g as an effective ingredient amount per. Termite control composition for soil treatment of the present invention, using water as a solvent, by using an aqueous formulation without using an organic solvent such as xylene,
The effects of the volatilization of the organic solvent on the human body and the environment and the improvement of the storage location and storage quantity of hazardous substance Class 4 flammable liquid in transportation and storage of products are improved.

Hereinafter, typical examples and test examples of the present invention will be illustrated, but the present invention is not limited thereto. In Examples, “parts” means “parts by weight”. Also,
In Table 1, the components are shown by numerical values. For example, 5.0 means 5.0 parts by weight. Bifenthrin is an active ingredient of the present invention, 2-methylbiphenyl-3-ylmethyl (Z)-(1RS) -cis-3- (2-chloro-3,
3,3-trifluoroprop-1-enyl) -2,2-
Dimethylcyclopropane carboxylate.

[0014]

Examples Example 1 Bifenthrin 5 parts Dibenzyl ether 5 parts Ethylene glycol 10 parts Polyoxyethylene styryl phenyl ether, polyoxyethylene styryl phenyl ether formaldehyde condensate and a mixture of calcium dodecylbenzene sulfonate 15 parts (Neucargen ST-30) 65 parts or more of water were uniformly mixed and dissolved to obtain the composition of the present invention. Examples 2 to 24 In the same manner as in Example 1, the compositions of the present invention were obtained with the compositions shown in Tables 1 to 5.

[0015]

[Table 1] In the table, DEGMProE indicates diethylene glycol monopropyl ether, and DEGMBuE indicates diethylene glycol monobutyl ether. same as below.

[0016]

[Table 2]

[0017]

[Table 3]

[0018]

[Table 4]

[0019]

[Table 5]

Comparative Example 1 Bifenthrin 5 parts Newcargen ST-30 10 parts Dibenzyl ether 85 parts The above components were uniformly mixed and dissolved to obtain a comparative example composition.

Test Example 1 Flash point measurement test (Cleveland open flash point measurement) The composition of the present invention and the comparative composition prepared in Examples 1 to 24 and Comparative Example 1 were filled up to the marked line of the sample cup, and bubbles on the surface were formed. Was removed. The test flame was ignited and adjusted so that the size of the flame was 4 ± 0.8 mm. The temperature of the test article is heated at 5.5 ± 0.5 ° C./min. When the temperature reaches the set temperature of 28 ° C., the test flame is passed straight through the center of the sample cup for about 1 second and does not catch fire. It was confirmed. Each time the temperature of the test article increases by 2 ° C., the test flame is activated,
This operation was repeated until a fire occurred. A case where ignition was caused by this operation was determined as a dangerous substance, and a case where the content was reduced by boiling without ignition was determined as a non-dangerous substance. The results are shown in Table 6.

[0022]

[Table 6]

Test Example 2 Termite Control Test Two glass cylinders having an inner diameter of about 5 cm and a height of 12 cm were placed at a distance of about 2 cm from the bottom, having an inner diameter of about 1.5 cm and a length of 10 c.
Using a test system connected by a glass tube of 5 m (with a scale of 5 cm and a scale of 5 mm at the center), approximately 60 untreated soils adjusted to a water content of 25% in one glass cylinder
g, about 0.29 g of filter paper (5.5 mm in diameter), which is a favorite of termites, is placed in the other glass cylinder, and sand loam passed through a 20-mesh sieve is placed in the center of the glass tube at a temperature of 60 ± 2 ° C.
And 2.4 g of untreated soil dried to a constant weight with water and the composition of the present invention of the above example to an active ingredient concentration of 0.0
After adding 0.6 g of the drug solution diluted to 5% and mixing well, the test soil not subjected to the weathering treatment left at room temperature for 3 weeks was packed to a thickness of 1 cm, and the two glass tubes thus obtained were packed. To the glass cylinder. 200 termites and 20 termites were put into a glass cylinder filled with untreated soil, and the test system was allowed to stand in a constant temperature room at a temperature of 28 ° C. ± 2 ° C. and a humidity of 70% or more. The perforation distance (cm) of was measured visually. In addition, using the same active ingredient concentration as the test drug of the present invention using Comparative Example 1 as a control drug,
Tested under the same conditions as above. In the untreated plot, 0.6 g of ion-exchanged water was used in place of the test agent, and the test was performed under the same conditions as above. The results are shown in Table 7.

[0024]

[Table 7]

[0025]

As shown in the above test examples, the present invention has a non-dangerous substance which has an effect of preventing perforation and the like which is equal to or higher than that of the conventional emulsion, and has a reduced effect on the human body and the environment. The termite control agent composition for soil treatment in the form of an aqueous preparation can be obtained.

Claims (3)

[Claims] 1. An active ingredient comprising 2-methylbiphenyl-
3-ylmethyl (Z)-(1RS) -cis-3- (2-
Soil containing chloro-3,3,3-trifluoroprop-1-enyl) -2,2-dimethylcyclopropanecarboxylate and comprising an aromatic solvent, an emulsifier, a water-soluble solvent and water. Termite control composition for treatment. 2. 2-methylbiphenyl-3-ylmethyl (Z)-in 100 parts by weight of a termite controlling composition for soil treatment.
0.05 to 10 parts by weight of (1RS) -cis-3- (2-chloro-3,3,3-trifluoroprop-1-enyl) -2,2-dimethylcyclopropanecarboxylate, aromatic solvent The termite controlling composition for soil treatment according to claim 1, comprising 0.05 to 20 parts by weight, 0.2 to 40 parts by weight of an emulsifier, 0.2 to 40 parts by weight of a water-soluble solvent and the balance of water. 3. The termite control composition for soil treatment according to claim 1, wherein the termite control composition for soil treatment is in the form of an aqueous preparation.