JPH01299203A - Termite-controlling agent for soil-treatment - Google Patents

Abstract

PURPOSE:To obtain the subject controlling agent having excellent safety to human and animal and stability in soil, by using dimethyl (4-ethoxyphenyl) {3-(3-phenoxy-4-fluorophenyl)-propyl} silane and octachlorodipropyl ether as active components. CONSTITUTION:The objective controlling agent contains the compound of formula I and octachlorodipropyl ether at a ratio of 1:(1-5). The content of the compound of formula I in the agent is 0.01-90wt.%. The agent may be incorporated with a termite attractant to improve the efficiency of termite-proofing effect or with various other insecticide (such as organophosphorus, pyrethroidal or carbamate-type insecticides), preservative, etc., to obtain a composition for multi-purpose use. The above controlling agent can be used in various form. The chemical stability of the agent can be further improved and the residual activity in the soil can be increased by the micro-encapsulation or cyclodextrin- inclusion of the compound of formula.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to dimethy/I/(4-ethoxypheny/L/)1
3-(3-phenoxyV-4-fluoropheny/I/)propy/v1 silane (hereinafter referred to as compound A) and octachlorodipropyl ether fi/(hereinafter referred to as S-421)
The present invention relates to a termite control agent for soil treatment, characterized by containing the following.

[Conventional technology]

In recent years, pests that damage wood, such as termites, have become popular.

Damage caused by crucian beetles and wood beetles has become a problem, but in order to avoid being eaten by these pests, it has traditionally been the practice to treat lumber and sub-soil with insect repellents in advance. Organochlorine insecticides such as chlordane and dieldrin have been used as insect repellent ingredients.

However, these insecticidal and insect repellent ingredients all have problems in terms of persistence, toxicity, irritation, and environmental pollution, and their use was banned last year.
Pyrifos.

Organophosphorus agents such as phoxim have recently been introduced.

[Problem that the invention seeks to solve]

The organophosphorus-based termite control agent for soil treatment has the drawback that it is easily decomposed in the soil and has poor termite control effects over a long period of time, and there are many safety issues for humans and livestock. There is a strong need for the development of an ant control agent.

[Means and effects for solving the problem] The present inventors have been researching Pirethro, which is characterized by low toxicity, for many years.
As a result, Compound A was found to be a compound superior to chlordane and deidrin in terms of insecticidal properties and residual efficacy.

Compound A is being considered for practical use in the field of agriculture and horticulture because it has high insecticidal activity against insect pests of the order Phosphoroptera, aphids, planthoppers, etc., but it has low activity against pests of the order Orthoptera. For this reason, it was thought until now that it was unsuitable for use as a termite control agent.

However, when considering the ecology of termites, the present inventors believed that basic insecticidal efficacy tests alone were inappropriate and inadequate for evaluating the insecticidal and insect repellent components of termite control agents, and therefore conducted various i. When a practical wood treatment test was conducted on Sha-sha≠umbrella, it was revealed that Compound A exhibits a high effect on preventing feeding damage. Compound A has the advantages of rapid action against insects and low toxicity against warm-blooded animals, which are the characteristics of a pyrethroid drug, and at the same time has an extremely excellent residual effect.

Furthermore, considering that Compound A is an expensive insecticide compared to organochlorine insecticides and organophosphorus agents, the present inventors developed a pyrethroid-based termite control agent for soil treatment in order to reduce costs. When searching for a drug, Compound A
The combination of and 3-421 is piveronyl ptoxide, cinepirin 500, and MGK-264.

Sesamin, sulfoxide, Nko A-16388, etc.
The knowledge of using 8-421, which was discovered to have a specifically high synergistic effect compared to other synergists and completed the present invention, as a component of a termite control agent was disclosed in, for example, Japanese Patent Laid-Open No. 17502/1983. I know, but
This publication is aimed at a mixture of S-421 and the organic phosphorus agent phoxim, and contains compounds A and S-4 disclosed in the present invention.
There is no suggestion of a synergistic effect of 21.

As a result, it is possible to obtain high insecticidal and insect repellent effects even if the amount of compound A is reduced, and the practical advantage in terms of cost is extremely large.

Compound A used in the present invention is represented by the following formula CI) and contains a silicon atom in the molecule.

The termite control agent for soil treatment can contain 0.01 to 90% by weight of a compound as an insecticidal and insect repellent component, and S-
Compound A exhibits a high synergistic effect when mixed with 421
A suitable mixing ratio of 8-421 and 8-421 is 3:1 to 1220 (preferably 1:1 to 1:5).

In addition, a termite attractant may be appropriately added in order to exhibit insecticidal and insect repellent effects more efficiently. Furthermore, the termite control agent for soil treatment of the present invention includes, for example, organic phosphorus agents such as chlorpyrifos, phoxim, and pyridafenthione, and 7μ parinate.

Pyrethroids such as vermethrin, fenvalerate, fenpropathrin or other insecticides such as tripropylisocyanurate, carbamates, and various types of preservatives such as 0CCA-based compounds such as ccA, caB, etc. Phenolic compounds - bentacro-pheni/L'u'7 rate,
p-Promo2.6-S) Chlorphenol O iodoprobargi μ-based compound-Engineering F-1000.

0 Quaternary ammonium compounds and amine salts such as 3-iodo-2-glovinylbutylcarpamate to O organotin compounds such as benzalkonium chloride and dialkyldimethylammonium chloride - bis-(n-)! J Butyl Nuz) oxide, tributyl μtin terephthalate, etc. O Others - Naphthenic acid subsalts. A useful multi-purpose composition can also be obtained by appropriately mixing xyligen aluminum salt or the like.

The termite control agent for soil treatment of the present invention can be in various forms depending on the properties of the control agent and the purpose of use, such as oil, emulsion, wettable powder, aqueous solution, powder, granule, and air sealant. , the aqueous solvent is -condensing. Both preparations can be prepared according to conventional methods, and solid carriers include clays (kaolin, bentonites, etc.), night televisions, etc.)
Can be given as powder or powder.

Liquid carriers include water, alcohols, aromatic hydrocarbons (eg toluene, xylene, etc.).

Aliphatic hydrocarbons (e.g. kerosene, kerosene, etc.).

Esthetic/l/type, Nitori N1t4, etc. can be used. Next, as surfactants, A-K/L' sulfate NTE μ are used.

Examples include alkyl sulfonates, alkyl-ary sulfonates, polyethylene glycol-p-esters, and polyhydric alcohol-p-esters/L's. , its composition, casein, gelatin, starch, t, yc.

A fixing agent or dispersing agent such as polyvinyl μ alcohol is used. Further, by microcapsulating or cyclodextrin inclusion of Compound A used in the present invention, it is possible to obtain a formulation with increased chemical stability and enhanced residual efficacy in soil. On the other hand, compound people and 8-
The same effect as above can be obtained with a mixture of No. 421.

The method for applying the ant control agent for soil treatment of the present invention is as follows:
Conventional methods include spraying or foaming emulsions, granules, irrigation agents, powders, etc. on the soil under and around houses, or spraying a resin emulsion containing a termite control agent to spread a resin film on the soil and foundation surfaces. For example, there are methods of forming

Furthermore, the microencapsulated or cyclodextrin-encapsulated preparation has increased residual effectiveness in soil, and is an effective application method as a soil treatment agent.

〔Example〕.

EXAMPLES In order to further clarify the usefulness of the present invention, Examples and Test Examples will be described below, but it goes without saying that the present invention is not limited to these.

Formulation Example 1 5 parts of Compound A, 110 parts of S-42, and Sorbo-A/5M-
200 (registered trademark of Toho Chemical), 20 parts of xylol, and 60 parts of white kerosene were added, and these were mixed and dissolved by stirring well to obtain an emulsion.

Formulation Example 2 Emulsifier Hymer/vPs-AP (Matsumoto Yushi 11
Add 20 parts of t11 medicine registered trademark name) and 72 parts of purified water to obtain an aqueous solvent.

Test Example 1 A device was used in which two wide-mouthed bottles were connected through a cylindrical passage. One bottle contains wood chips, the other contains an untreated sample (40 g of loam mixed with 8 d of distilled water), and the passageway between them contains test soil (prescribed dilution of emulsion with a tI of 4 m according to Formulation Example 1). g!12 g was processed into 48 g of Sunday loam, and 12 g of it was collected) and packed to a distance of 5c1R.

2 house termite worker ants in a jar containing untreated Sunday loam
00 and 20 soldier ants were introduced, and the degree of penetration of the test soil after 21 days was examined, and the results were as follows.

In addition, as a result of a soil treatment test in which the test concentration of Compound A was 0.5% in both cases, the combination of Compound A and 8-421 showed a specific synergistic effect, while piveronyl ptoxide, Other synergists, such as cinepirin 500, had lower levels of efficacy.

A similar trend was observed for Yamato termites.

Although there are many unknowns regarding the reason for the synergistic effect, S-42
It is considered that the repellent effect of Compound A is largely involved in the anticide effect of Compound A.

Test Example 2 A soil treatment test was conducted using the following sample emulsion according to Test Example 1, and the results were as follows.

As a result of the test, judging from the standard that a penetration degree of 10 mm or less is acceptable, when the concentration of Compound A is 0.5%, the mixing ratio of Compound A and 3-421 is 1:1 to 1:2. When the concentration of the compound was 0.25%, a sufficient effect was obtained at a ratio of 1:1 to 1:10.

From the standpoint of formulation or cost, a ratio of 1:1 to 1:5 seems to be practical.

Example 1 To 5 parts of Compound A, 18 parts of S-42, and 5 parts of fluparinate, 10 parts of 5M-200 (J [Japanese chemical registered trademark name), 15 parts of Xylo-1'v, and 57 parts of white kerosene were added, and these were stirred well. Mix and dissolve to obtain an emulsion.

A 30 times diluted solution of this emulsion with water is applied to the soil area of 20crx width around the frames installed under the floor, the soil area under the concrete floor of bathrooms, toilets, entrances, back entrances, etc., and the soil area that rises from the ground. When sprayed using a power sprayer at a rate of 31 ml per 1 rl over a 20cm-wide soil area around self-contained pipes, termite damage was prevented for 5 years.

Example 2 2 parts of Compound A, 5-4215 parts, were dissolved in 25 parts of trioctyl phosphate, 50 parts of vinyl chloride raw material resin and 18 parts of turmeric were added and mixed well. When this resin emulsion diluted 20 times with water and urethane resin were combined at the tip of the nail and sprayed to form a fast-curing resin film on the soil surface layer under the house, termite damage was prevented for over 3 years. I didn't take it.

〔Effect of the invention〕

The soil treatment test ant control agent of the present invention is safer for humans and livestock than conventional organophosphorus-based termite control agents for soil treatment.
The present invention provides an extremely useful pest control agent with excellent stability in soil and termite control effects.

[Brief explanation of the drawing]

FIG. 1 shows the relationship between the concentration of each component of Compound A and S-421 in Test Example 2 and the penetration degree of the test soil, and the area below the dotted line shows the synergistic action area. Patent applicant: Dainippon Jomugiku Co., Ltd.

Claims (1)

[Claims] A termite control agent for soil treatment characterized by containing dimethyl(4-ethoxyphenyl) {3-(3-phenoxy-4-fluorophenyl)propyl}silane and octachlorodipropyl ether.