JPH01221301A - Ant-preventing agent - Google Patents

Abstract

PURPOSE:To provide an economical ant-preventing agent having low toxicity, exhibiting excellent ant-preventing performance even if spread objects and environmental conditions are different, having also bactericidal effect and capable of retaining the ant-preventing effect over a long period, by containing 4-bromo-2,5-dichlorophenols as active ingredients. CONSTITUTION:The ant-preventing agent contains as active ingredients one or more kinds of 4-bromo-2,5-dichlorophenol and salts thereof, e.g., alkali (ine earth) metal salts such as Na, K, Ba and Ca salts, lower alkylamine salts such as methylamine salt, preferably Na salt. The above-mentioned active ingredients are directly applied or employed after prepared into emulsions, etc., by the addition of a carrier or an aid depending upon the purpose of the use. The simultaneous use of known organic phosphorus series, pyrethroid series or carbamate series ant-preventing agents with the above-mentioned active ingredients permits to exhibit a synergistic effect to provide an excellent ant- preventing agent. The agent is employed as an ant-preventing agent for water, iron, concrete, plastics, rubbers, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a termiticide containing one or more types of 4-bromo-2,5-dichlorophenol or its salts as an active ingredient.

[Prior art]

Japan's climate is suitable for the growth of termites, so bridge structures made of wood, iron, concrete, etc. are eaten away by termites.
Or their secretions cause corrosion, decay, and development, which can cause serious damage.

Conventionally, DDT, γ-BIIC,
Del-1-phosphorus, PCP, chlordane, etc. have been used, but these drugs are highly toxic and their use has been restricted due to pollution problems.

Therefore, there is a strong desire to develop a termiticide that is low in toxicity and exhibits effective and sustained effects.

〔the purpose〕

The purpose of the present invention is to provide a new termiticide that is low in toxicity, has a long-lasting termite-proofing effect, and exhibits its termite-proofing properties effectively even when soil and environmental conditions change. do.

〔composition〕

According to the present invention, there is provided a termiticide characterized by containing one or more types of 4-bromo-2,5-dichlorophenol or its salts as an active ingredient.

As a result of extensive research into the effects of 4-bromo-2,5-dichlorophenol or its salts, the present inventor found that
Termiticides containing such compounds as active ingredients have low toxicity and maintain termite-controlling effects over a long period of time, and even if the soil to which it is sprayed or its environmental conditions change, the termite-controlling performance remains effective. The present invention was completed based on this discovery.

4-Bromo-2,5-dichlorophenol used in the present invention is a known substance that has been used as a preservative in wood, concrete mixtures, etc., and this substance has an effective effect as a termiticide. This was completely unknown before the filing of this application, and was discovered for the first time by the present inventor.

The present invention will be explained in more detail below.

The termiticide of the present invention contains as an active ingredient one or more of 4-bromo-2,5-dichlorophenol or its salts, and the salts include alkali metal salts such as potassium salts and sodium salts; Examples include alkaline earth metal salts such as barium salts and calcium salts, and lower alkyl amine salts such as methylamine and ethylamine, but it is preferable to use sodium salts in terms of effectiveness.

Furthermore, in the present invention, conventionally known termiticides, such as organophosphorus termiticides, pyrethroid termiticides, carbamate termiticides, etc., may be used in combination, if necessary.

As an organophosphorus termiticide, 0.0-dichlorophenylthiophosphate (ECP)
.

0.0-dimethyl-〇-p-cyanophenylthiophosphate-1-(CYAP), 0.0-dimethyl-〇-4-methylthio m-tolylthiophosphate (MPP), 0.0-dimethyl-〇- 4-methylthio m-tolylthiophosphate (MPP), 0.0-dimethyl-〇-4-nitro m-tolylthiophosphate (MEP), 0.0-dimethyl-〇-3,5,6-trichloro-2 −
Pyridylthiophosphate (chlorpyrifosmethyl),
0.0-diethyl-〇-3,5,6-)-cyclolo2
-Pyridylthiophosphate (chlorpyrifos), 0-
Ethyl-5-n-propyl-〇-(2,4-dichlorophenyl)thiophosphate (prothiophos), 0.0-
Dimethyl-N-acetylphosphoramidothioate (acephate), 0.0-diethyl-〇-(α-cyanobenzimino)thiophosphate (hoxim), 0.0-dimethyl-〇-(2,2-dichlorovinyl) Phosphate (DDVP) etc.

Examples of pyrethroid termiticides include α-cyano-3-phenoxybenzyl-2-(4-chlorophenyl)-isovalerate (Sumicidine).

(±)-3-Allyl-2-methyl-4-oxocyclobent-2-enyl (±)-cis, trans-folic acid (ares 1 non), 3-phenoxybenzyl (±)-cis, trans-3 (2 , 2-dichlorovinyl)-2,2-dimethylcycloproban carboxylate () (-mesinon) etc. 1, as a carbamate termiticide component, α-
naphthyl-N-methyl-nobemate (NAC) m-tolyl-N-methyl-nobemate (MTMC), 0-s
ee-butylphenyl-N-methyl-nobemate (B
PMC) 2-isopropoxyphenyl-N-methyl carnobemate (PHC) and the like.

The termiticide of the present invention can be applied directly depending on the purpose of use, or can be applied with a suitable carrier, emulsifier, dispersant, or spreading agent.

゛By adding penetrants, stabilizers, etc., formulations commonly used as termiticides, such as oil-soluble agents, emulsions, powders, wettable powders, etc.
It is prepared and used in paints, sprays, etc.

Suitable carriers include inert solid carriers such as clay, talc, bentonite, karyon, silicic anhydride, calcium carbonate, and wood flour; liquid carriers such as kerosene, ligroin, xylene, methylnaphthalene, dimethylformamide, and dimethyl sulfoxide; nitrogen gas; Examples include gas carriers such as dimethyl ether, chlorofluorocarbon gas, and vinyl chloride monomer. Examples of adjuvants that can be used as appropriate to improve the properties of the preparation and enhance its anti-termite effect include anionic, cationic, and nonionic surfactants, methylcellulose, vinyl acetate resin, sodium alginate, etc. Examples include various polymer compounds.

In order to use the above-mentioned termiticide to prevent termites from building, etc., it is sufficient to treat soil with an emulsion and treat wood with an oil agent. In general wood processing,
Preferably, the treatment is carried out by coating, spraying, dipping, or other treatment methods.

The termiticide according to the present invention also has a bactericidal effect, as is known, and can also be used as a preservative and antifungal agent.6 Therefore,
When this drug is used as a preservative and termiticide, it does not require the concomitant use of a new preservative.

〔Example〕

EXAMPLES Hereinafter, the present invention will be specifically explained with reference to Examples, but the present invention is not limited thereto.

Example 1 4-bromo-2,5-dichlorophenol (hereinafter referred to as BDC)
Abbreviated as P. ) 20x, surfactant (mixture of alkylbenzene sulfonate and polyoxyethylene alkylphenyl ether) 10%, and organic solvent (xylene) 7
0% to prepare a BDCP emulsion. A chlordane emulsion was also prepared in the same manner. The anti-termite performance of these emulsions was evaluated by a penetration inhibition test according to the Japanese Wood Preservation Association Standards R Ant-Anti-termite Efficacy Test Method.

The results are shown in Table-1.

Table 1 Soil penetration inhibition concentration (ppm) Example 2 BDCP 12%, 010-diethyl-2,4-dichlorophenylthiophosphate (hereinafter abbreviated as ECP) 8%, surfactant (alkylbenzenesulfonate and Mixture of oxyethylene alkylphenyl ether) 10%, organic solvent (xylene) 70%,
A DCP/ECP emulsion was prepared. Also, BDCP12%
, 1.1.1°2, 6.7.7.7-octachloro-4
- 8% oxaheptane (hereinafter abbreviated as 5421), 10% surfactant (mixture of alkylbenzene sulfonate and polyoxyethylene alkylphenyl ether), and 7 parts of an organic solvent (xylene), BDCP15421
An emulsion was prepared.

The anti-termite performance of these emulsions was evaluated by a penetration inhibition test according to the "Anti-termite Efficacy Test Method" standard of the Japan Wood Preservation Association. The results are shown in Table-2. For reference, Table 2 also shows test results using the chlordane emulsion prepared in Example 1.

Table 2 Soil penetration inhibition concentration (ppm) Example 3 BDCP 2%, organic solvent (isopropyl alcohol)
A BDCP oil solution was prepared by blending 98%. A chlordane oil solution was also prepared in the same manner. The wood termite-preventing efficacy of these oils was evaluated in accordance with the Japan Wood Preservation Association's standard ``Anti-termite Efficacy Test Method''. The results are shown in Table-3.

Example 4 BDCP 1.2%, ECP 0.8% and organic solvent (
Contains isopropyl alcohol) 98z, concentration 2.0
% (71 BDCP/ECP oil agent (BDCP/ECP blending ratio = 624 blending ratio 624) Also, in the same manner, a concentration of 1.
Oil solutions of 0% and 0.5% BDCP/ECP were prepared.

Furthermore, BDCP/5421 oil agent (BPCP/542
1 blending ratio = 6:4) was prepared.

Concentrations of 1.0% and 0.5% BDCP/54 were prepared in the same manner.
21 oil agent was manufactured by tA. Also, in the same way, the concentration of 2.0
%, 1. A chlordane oil solution of 0.5z and 0.5z was prepared.

The wood termite prevention efficacy of these oils was evaluated in accordance with the standards of the Japan Wood Preservation Association. The results are shown in Table 4.

Table-4 Wood termite prevention effect of BDCP composite oil (eating dust = mg
) [Effects] From the above examples, termiticides containing one or more of 4-bromo-2,5-dichlorophenol or its salts as an active ingredient have low toxicity, good economic efficiency, and It is clear that it is an excellent termiticide with a synergistic effect when combined with other termiticides.

Further, the termiticide according to the present invention also has a bactericidal effect, so when used as a preservative and termiticide, it has many advantages such as not requiring the use of a new preservative.

Therefore, the product of the present invention is widely used as a termiticide for wood, iron, concrete, plastics, rubber, etc.

Patent applicant Hoechst Japan Co., Ltd. Agent Patent attorney Toshiaki Ikeura (and one other person)

Claims (1)

[Claims] (1) A termiticide characterized by containing one or more types of 4-bromo-2,5-dichlorophenol or its salts as an active ingredient.