JPH08133909A - Wood insect pest controlling agent - Google Patents

Abstract

PURPOSE: To obtain a wood insect pest controlling agent having activity of eating inhibiting action, repelling action, insecticidal action, etc., on wood insect pests. CONSTITUTION: This wood insect pest controlling agent contains at least one kind of compound selected from a higher alcohol, preferably having about 8-14 carbon number and one or plural OH groups, a higher fatty acid ester, preferably a fatty acid ester composed of a 1-18C alcohol residue and a 1-18C aliphatic carboxylic acid residue and having 8-25 total carbon number as an active ingredient. As necessary, an 8-18C carboxylic acid may be added as an active ingredient to the controlling agent. The wood insect pests to be the object of the controlling agent includes e.g. an insect belonging to the order Isoptera, Coleoptera or Hymenoptera and the controlling agent is applied in an amount capable of sufficiently exhibiting the effect on penetrating source and generation source of the wood insect pest.

Description

Detailed Description of the Invention

[0001]

The present invention relates to a wood pest control agent,
More specifically, the present invention relates to a wood pest control agent having activities such as an antifeedant action, a repellent action, and an insecticidal action against termites, flat beetles and the like that erode buildings and furniture in which wood is used.

[0002]

As a control agent for wood pests such as termites and flat beetles, it is used as a general insecticide, for example, organophosphorus compounds such as foxime and chlorpyrifos. Examples include insecticides, carbamate-type insecticides such as propoxers and bassa, and pyrethroid-type insecticides such as allethrin and permethrin.

Although most of the above compounds have relatively low toxicity, some of the organophosphorus and carbamate insecticides have a cholinesterase activity inhibitory action on the human body, and the pyrethroid insecticide has high fish toxicity. There are many things, and it is hard to say that they are sufficiently safe from the viewpoint of environmental pollution. Further, among these compounds, a compound which is mixed with octachlorodipropyl ether (hereinafter referred to as S-421), which is a synergist, is commercially available due to problems such as persistence of efficacy and price / performance ratio. Many. Although S-421 is an excellent synergist, there are voices of doubt as to its use as a chlorine-based drug from the viewpoint of environmental pollution.

On the other hand, as an example in which a highly safe fatty acid ester, which is one of the objects of the present invention, is used as a pest control agent, the total carbon number is 10 or 11, and the boiling point under normal pressure is 200 to A repellent for wool pests comprising at least one selected from fatty acid chain esters in the range of 230 ° C. as an active ingredient (Japanese Patent Laid-Open No. 58-39603).
Publication).

However, the repellents for wool pests are wool pests such as squid, koga, beetle bug, beetle bug and the like, and have not been studied as a control agent for wood pests such as termites. Also,
The fatty acid chain ester preferably has a boiling point of between 200 and 230 ° C., and higher boiling points are said to be less likely to act on wool insects. From the point of view, it is desirable that the boiling point be rather high, and it is not necessary to be within this temperature range.

In the fatty acid ester, butyl stearate is generally used in a large amount as a plasticizer, and in the insect repellent field, it is used for adjusting the diffusion rate of the insect repellent of an electric mat for insect repellent. Some of them are present, but they have not been studied as a control agent for wood pests.

[0007] The present inventors have conducted a study for the purpose of obtaining a wood pest control agent which is highly safe for humans and animals and is environmentally friendly. As a result, higher alcohols and higher fatty acid esters have low toxicity to humans and are environmentally friendly. The inventors have found that it is a mild wood pest control agent and completed the present invention.

[0008]

That is, the wood pest control agent according to the present invention is characterized by containing at least one selected from higher alcohols and higher fatty acid esters as an active ingredient (1).

The wood pest control agent according to the present invention is characterized in that, in the wood pest control agent described in (1) above, termites and the like are the target wood pests (2).

The higher alcohol used in the present invention preferably has one or more OH groups having 8 or more carbon atoms, and the number of carbon atoms thereof is preferably about 8 to 14. Specific examples of the higher alcohols include octanol, nonanol, decanol, undecanol, dodecanol, tridecanol and tetradecanol. These higher alcohols may be linear or have a side chain.

The higher fatty acid ester used in the present invention is preferably a fatty acid ester having a total carbon number of 8 to 25. The fatty acid ester preferably comprises an alcohol residue having 1 to 18 carbon atoms and an aliphatic carboxylic acid residue having 1 to 18 carbon atoms, and specific examples thereof include allyl pentanoate and allyl caproate. , Allyl heptanoate, allyl caprylate, allyl nonanoate, allyl caprate, methyl nonanoate, ethyl nonanoate, ethyl caprate, butyl caprate, heptyl caprate, decyl caprate, methyl laurate, ethyl laurate, laurate Allyl acid, propyl laurate, butyl laurate, amyl laurate, methyl myristate, ethyl myristate, propyl myristate, allyl myristate, butyl myristate, methyl palmitate, ethyl palmitate, propyl palmitate, allyl palmitate Palmitate Le, butyl stearate, methyl oleate, ethyl oleate, butyl oleate,
Octadecyl acetate and the like can be mentioned. These higher alcohols or higher fatty acid esters may be used alone or in combination of two or more.

When the higher alcohol is used as an active ingredient, the content in the chemical (wood pest control agent) is 0.0.
1 to 90 wt% is preferable, and 1 to 80 wt% is more preferable. When the fatty acid ester is used as an active ingredient, the content in the drug is preferably 0.1 to 90 wt%, more preferably 1 to 80 wt%. When both are used in combination, the content may be set according to the ratio of the components.

If desired, carboxylic acids such as caprylic acid, nonanoic acid, capric acid, oleic acid, and lauric acid may be added to the wood pest control agent as active ingredients.
The carboxylic acid preferably has 8 to 18 carbon atoms, and may be linear or branched. Also,
The preferred content of the carboxylic acid in the drug is 0.01
~ 90 wt%.

The form of the formulation is not particularly limited as long as it contains the components of the wood pest control agent according to the present invention. Examples of the form include a solution, a wettable powder, a suspension and a dispersion. Liquids such as agents, emulsions, oils, lotions; semisolids such as pastes and creams; sprays, aerosols,
Examples include paints. These can be appropriately selected according to the purpose of use and the site of application. In addition, these preparations can be manufactured by a known method.

As long as the effect of the active ingredient of the wood pest control agent according to the present invention is not impaired, for example, insect repellents, antiseptic / antifungal agents, resins, solvents and other additives ( For example, stabilizers such as antioxidants and ultraviolet absorbers, emulsifiers, colorants, pigments, etc.) may be included.

Examples of the insect repellents include organic phosphorus insecticides such as oxime, chlorpyrifos, fenitrothion, pyridafenthion and isofenphos, pyrethroid insecticides such as cyfluthrin, permethrin, tralomethrin, fenvalerate, etofenprox and Hoe-498. Examples thereof include nitroguanidine insecticides such as imidacloprid, nitromethylene insecticides, pest repellents such as dibutyl succinate and diethyltoluamide, and efficacy enhancers such as S-421.

Examples of the antiseptic / antifungal agent include 3-bromo-2,3-diiodo-2-propenylethyl carbonate,
3-iodo-2-propynyl butyl carbamate, 2,3,3-triiodoallyl alcohol, organic iodo preservatives such as parachlorophenyl-3-iodopropargylformal,
2- (4-thiazolyl) benzimidazoles, benzimidazoles such as 2-thiocyanomethylthiobenzothiazole and benzothiazole preservatives, 1- (2- (2 ', 4'-dichlorophenyl) -1,3-dioxolane-2 -Ile-methyl) -1H-
1,2,4-triazole, 1- (2- (2 ', 4'-dichlorophenyl)
-4-Propyl-1,3-dioxolan-2-yl-methyl) -1
H-1,2,4-triazole, α- (2- (4-chlorophenyl)-
Examples thereof include triazole-based preservatives such as ethyl) -α- (1,1-dimethylethyl) -1H-1,2,4-triazole-1-ethanol.

Examples of the resin include alkyd resin,
Acrylic resins, fluororesins, silicone resins and the like can be mentioned.

Examples of the solvent include Exxon naphtha No. 7, Exxon Naphtha No. 6, Exor D80
(Above, Exxon Chemical Co., Ltd.) and other aliphatic organic solvents, Solvesso 150, Solvesso 200 (above, Exxon Chemical Co., Ltd.), Nisseki Hysol SAS 296,
Nisseki Hysol SAS-LH, Alken L (Nippon Petrochemical Co., Ltd.), PAD (Nippon Petroleum Co., Ltd.), Dibutyl phthalate, Dioctyl phthalate, Diaryl phthalate, etc. Is mentioned.

Next, examples of the wood pests to which the wood pest control agent according to the present invention is applied include insects belonging to the orders Termite, Coleoptera, and Hymenoptera. Specific examples of the insects belonging to the order Termites include those belonging to the family Rhinotermitidae, such as Yamato termites, and Termites, and those belonging to the family Rubitermites, such as Dycotermites. Specific examples of the insects belonging to the order Coleoptera include flatworm beetle, oak flatworm beetle, zelkova flatworm beetle, those belonging to the flatworm beetle family such as algal flatworm beetle, etc. Those belonging to the genus Aphididae such as C. serrata, etc., those belonging to the family Asteridae such as Cichorus nagasimimushi, Nihontake Nagaminusimushi, Komagashinakuimushi, long-tailed beetle, etc. Those belonging to the family Beetle family such as Saxus quercivorus,
Others include those belonging to the family Buprestidae and weevil. Specific examples of the insects belonging to the order Hymenoptera include, for example, those belonging to the family Bee, such as bear bee, and those belonging to the family ant, such as Muneakao ant. The wood pest control according to the present invention exerts an excellent control effect on termites among these insects.

Next, the control method using the wood pest control agent according to the present invention will be described.

As described above, the wood pest control agent according to the present invention can be used in various forms. The wood pest control agents of these various forms can be used as invasion sources or generation sources of pests such as kitchen, The bathroom, the living room, the corner of the floor, the underfloor, the ceiling, the pillar, the wall, the soil, etc., may be provided in an amount sufficient to exert their effects. Examples of the method include various methods depending on the invasion source and generation source of wood pests, such as coating, spraying, dipping, pouring, mixing, and spraying. When the wood pest control agent is present in the soil, methods such as spraying on the soil surface, spraying on grooves formed in the soil, and mixing with the soil can be used. Further, as described above, not only spraying to a specific place, for example, by applying, dipping, kneading, etc. to a sheet-shaped base such as a synthetic resin sheet, paper, cloth, etc., the wood pest control agent It is also possible to effectively control the pests by adhering or including the above, and by installing or sticking the sheet to which the wood pest control agent adheres to the place where the wood pests enter or occur.

When the wood pest control agent is used by the method as described above, a large repellent effect against the wood pests described above is recognized, or when the wood pest control agent is operated in the vicinity of the wood pest control agent for a certain period of time or more, the wood pests are not affected. It has been confirmed that they become immobile or die, and the above-mentioned effect on termites is particularly remarkable.

As described above, the wood pest control agent according to the present invention has activities such as an antifeedant action, a repellent action and an insecticidal action against wood pests such as termites and flat beetles.

[0025]

The present invention will be described in more detail based on the following examples, but the invention is not intended to be limited to these examples.

Preparation of Sample Solution (Examples 1 to 40 and Reference Examples 1 to 5) Carboxylic acid esters and alcohols (Examples) shown in Tables 1 and 2 below as wood pest control agents according to Examples and Reference Examples ), And carboxylic acid (reference example) with n-
A sample solution containing the above compound was obtained by adding 10% by weight to hexane.

Test Example 1 Next, the quartz sand which has passed through a 20-mesh sieve is heated to a temperature of 60.
It was dried at ± 2 ° C until a constant weight was obtained, and then cooled to obtain a test quartz sand. Next, to 12 g of this quartz sand, the sample solution was uniformly adhered to the surface so that the amount of each sample was 1% by weight with respect to the quartz sand, and the solvent (n-hexane) was scattered. Further, moisture was adhered to these quartz sands so that the water content with respect to each of the dry quartz sands was 10% by weight. For comparison, quartz sand with water adhered was prepared in the same manner as in the above case without treatment with a chemical.

Next, two bottomed cylindrical glass containers (inner diameter 5 cm, height about 12 cm) having a sliding portion for connecting glass tubes at a position 2 cm from one end are placed, and two glass containers are placed. A glass tube (internal diameter 1.5 cm, length about 10 cm) capable of connecting and communicating with each other was prepared. The glass container and the glass tube were dried and sterilized in advance.
Next, one glass container was filled with about 60 g of the test quartz sand to which no chemicals were attached, and the other glass container was filled with about 3 g of pine pieces. Further, the central portion of the glass tube was filled with quartz sand treated with the sample solution according to the above-mentioned Examples and Reference Examples or quartz sand without chemical treatment, and the two glass containers were connected by this glass tube. Then, put 200 termites (Coptotermes formosanus) from the nest and 20 soldiers from the nest on the quartz sand in one glass container filled with the quartz sand for the test without chemicals attached. , The temperature of this test equipment is 28 ± 2 ℃,
It was left for 3 weeks in a thermostatic chamber with a humidity of 70% or more.

After 3 weeks, the termites placed in the glass container filled with the quartz sand for the test passed through the glass tube and moved toward the glass container filled with the other pieces of red pine. Whether or not it was observed. The test was repeated 3 times for each sample.

As a result, in the test using the quartz sand treated with the sample solutions according to the Examples and Reference Examples, no migration of the termites was observed. On the other hand, when the glass tube was filled with the chemical-untreated quartz sand, the termites moved in the glass tube filled with the quartz sand and reached the red pine fragments. As described above, the quartz sands to which the sample solutions according to the examples and the reference examples were attached exhibited a strong repellent effect against the termites.

Test Example 2 Next, as another test example, quartz sand and untreated quartz sand treated in the same manner as in Test Example 1 were spread on a petri dish (diameter 6 cm) that had been previously dried and sterilized. Next, 10 termite termite workers collected from the nest were randomly placed on these quartz sands. Next, each petri dish was placed in a container containing water, and the container was allowed to stand in a thermostatic chamber at a temperature of 28 ± 2 ° C. for 1 week, and the health condition of the termites was observed 1 day and 1 week later, respectively. The results are shown in Tables 1 and 2 below. Comparative Example 1 shows a case where quartz sand to which the sample solution is not attached is used.

[0032]

[Table 1]

[0033]

[Table 2]

As is clear from the results in Tables 1 and 2, some of the drugs (heptyl caprate, decyl caprate, methyl oleate, ethyl oleate, butyl oleate, octadecyl acetate, tetradecanol) were used. Some of the used termites were still in a healthy state even after one week, but when using quartz sand treated with the sample solutions according to Examples and Reference Examples, one day or The majority were dead after one week, demonstrating not only repellent effects, but killing termites or inhibiting normal activity function.

The above-mentioned heptyl caprate and the like are
Although not as effective as killing the termites or inhibiting normal activity function, the above Test Example 1 demonstrated that it has a strong repellent effect.

[0036]

INDUSTRIAL APPLICABILITY As described in detail above, the wood pest control agent according to the present invention contains at least one selected from higher alcohols and higher fatty acid esters as an active ingredient. Food inhibitory action, repellent action,
Has activity such as insecticidal action.

Further, the wood pest control agent according to the present invention has more reliable activity against termites and the like such as an antifeedant action, a repellent action and an insecticidal action.

Claims (2)

[Claims] 1. A wood pest control agent containing, as an active ingredient, at least one selected from higher alcohols and higher fatty acid esters. 2. The target wood pest is termites.
The wood pest control agent described.