JPH03240708A - Acarid controlling agent - Google Patents

Abstract

PURPOSE:To obtain an inexpensive acarid controlling agent containing 6- methylquinoxaline-2,3-dithiocarbonate as an active ingredient and having low toxicity and wide acarid control region. CONSTITUTION:The aimed acarid controlling agent containing 6- methylquinoxaline-2,3-dithiocarbonate (general name: quinomethionate) as an active ingredient, exhibiting extremely excellent mite control effects and especially suitable to acarides, dust mites, etc. The acarid controlling agent exhibits excellent effects when the agent is put on tatami mat, carpet, floor, mattress, sofa, beds, closet, housing tools, warehouse, etc., and directly treated by spraying, coating, heat evaporating, etc., or mite control material in which the active ingredient is retained in a substrate is put on the above-mentioned place.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a novel mite control agent and method.

[Conventional technology]

Dust mites are almost always present in the indoor dust of ordinary households, but in recent years, as housing and lifestyles have changed, the number of mites has increased.

Conventional mite control agents against indoor dust mites include, for example, fenitrothion, fenthion;
Organic phosphorus compounds such as DDVP and diazinon, carbamate compounds such as propoxar and NAC, and pyrethroid compounds such as resmethrin forte are known.

[Problem that the invention seeks to solve]

The need for recognition and control of dust mites and house dust mites as sanitary pests is relatively recent.

Currently, there are many types of chemicals on the market for controlling pests, and although it is possible to select and use useful chemicals from among them,
It is quite difficult to control these mites with chemicals. It is true that solving the problem with insecticides has often been very successful in the past. However, this has led to overconfidence in the omnipotence of insecticides, and scientific extermination measures have not been taken.

Unlike other insects, mites are said to be less sensitive to insecticides, but no new effective agents have yet been developed that satisfy the various control conditions for mites and house dust mites. There are very few acaricides that have been developed as agricultural chemicals targeting parasitic spider mites, but can also be effectively used to control mites, which are sanitary pests.

That is, these known mite control agents are used by holding them in insect repellent paper for tatami mats and carpets, or by scattering or spraying them as they are, but they have the following disadvantages. That is,
Organophosphorus-based mite control agents generally have the disadvantages of being highly toxic, have a bad odor, and are less effective against Dermatophagoides mites, while carbamate-based mite control agents are highly toxic and less effective against Dermatophagoides mites. However, pyrethroid-based mite control agents have the disadvantages of being expensive and having low effectiveness against woolly mites.

As mentioned above, these drugs were originally developed as agricultural insecticides and are used effectively in that field without any problems. It is difficult to say that it is necessarily satisfactory.

[Means for Solving the Problems] The present inventor has developed a method that has low toxicity and has a wide range of mite control areas.
As a result of various studies to provide an inexpensive mite control agent, it was discovered that 6-methylquinoxaline-2,3 dithiocarbonate (-ship name: quinomethyl 2-to) satisfies the above requirements.

That is, the present invention relates to a mite control agent characterized by containing 6-methylquinoxaline 2,3-dithiocarbonate (-ship name: chinomethionate) as an active ingredient, and a method for controlling mites using the control agent. .

The mite control agent of the present invention exhibits extremely excellent mite control effects.

Specifically, the target mites are Dermatophagoides nigricans (Dercus mites) and Dermatophagoides nigricans (Dercus mites)
These include dust mites W4 (dust mites), dust mites such as woolly dust mites and wheat dust mites, dust mites such as dust mites and house dust mites, dust mites, dust mites such as staghorn dust mites and footworm mites, and animal parasitic mites such as dust mites and common dust mites. . Particularly, mites and house dust mites can be mentioned.

In the mite control agent of the present invention, the above-mentioned active ingredients can be used as they are, but usually the active ingredients are retained in a liquid carrier or a solid carrier, and film forming agents, emulsifiers, dispersants, and spreading agents are added as necessary. Used in the form of oils, emulsions, wettable powders, sprays, aerosols, smokers, liniments, powders, granules, etc. by adding additives, wetting agents, stabilizers, propellants, volatilization control agents, etc. can do. Examples of the liquid carrier include water, alcohols such as methyl alcohol, ethyl alcohol, and isopropyl alcohol, acetone, methyl ethyl ketone,
Ketones such as cyclohexanone, tetrahydrofuran,
Ethers such as dioxane and dimethyl ether, aliphatic hydrocarbons such as hexane, kerosene, normal paraffin, and solvent naphtha, aromatic hydrocarbons such as benzene and toluene, halogenated hydrocarbons such as dichloromethane and dichloroethane, ethyl acetate, Examples include esters such as butyl acetate. Examples of solid carriers include mineral powders such as silicic acid, kaolin, activated carbon, bentonite, diatomaceous earth, talc, clay, calcium carbonate, and ceramic powder; vegetable powders such as wood flour, soybean flour, wheat, and starch; Examples include clathrate compounds such as dextrin.

In addition, examples of coating film forming agents include cellulose derivatives, vinyl resins, alkyd resins, urea resins, epoxy resins, polyester resins, urethane resins, silicone resins, acrylic resins, chlorinated rubber, polyvinyl alcohol, etc. Also, as emulsifiers, dispersants, and spreading agents, soaps, polyoxyethylene fatty alcohol ethers, bolyoxyethylene alkyl allyl ethers, polyoxyethylene fatty acid esters, fatty acid glycerides, sorbitan fatty acid esters, sulfuric esters of higher alcohols, Examples of surfactants such as alkylaryl sulfonates and propellants include liquefied petroleum gas, dimethyl ether, and fluorocarbons.

In addition, as a volatilization regulator, tricyclodecane, cyclododecane, 2,4.6-)liisopropyl-1°3.5-)
The active ingredient can also be made into a sublimable solid agent by using a sublimable carrier such as dioxane or trimethylene norbornene or a sublimable insect repellent such as paradichlorobenzene, naphthalene, or camphor.

Furthermore, the mite control agent of the present invention may contain various insect repellents, synergists, pest repellents, rat repellents, antioxidants, decomposition inhibitors, bactericides, fungicides, fragrances, colorants, etc. You can also do it.

The amount of active ingredient in the mite control agent of the present invention may be appropriately determined depending on its dosage form, application method, application location, etc., but when used in the form of a wettable powder or emulsion, the amount of active ingredient 0.
When used in the form of oil or aerosol, it is preferably 0.1 to 10% by weight of the active ingredient, and the amount to be applied is such that the amount of active ingredient is 0.1 to 10% by weight per area to be treated. Approximately 20cm or more, applicable space In? Approximately 2 active ingredients per serving
■It is desirable to have at least 1.

The present invention also provides a mite-controlling material in which the above-mentioned mite-controlling agent is retained in a base material. The tick control material is
Utilizing the characteristics of the base material, it is used as films, sheets, architecture, construction materials, etc. that have mite-repellent properties.

The means for retaining the mite control agent of the present invention on these substrates is not particularly limited, and may be carried out, for example, by coating, impregnating, dropping, kneading, or the like. The amount retained is not particularly limited and can be determined as appropriate.
Generally, when impregnating the above-mentioned base material, it is preferable to use an amount up to a saturated impregnation amount.

A preferred embodiment of the mite control material of the present invention is as follows:
An example of this is a carpet that prevents dust mites. The mite-repellent carpet can be prepared by preparing a normal carpet, for example, using a pile, a first base fabric, a backing agent, and a second base fabric, and then treating its surface and (
or) Spraying the mite control agent of the present invention in liquid form on the back side, or applying the mite control agent of the present invention to at least one of the pile, the first base fabric, and the second base fabric prior to creating the carpet. It can be obtained by kneading the agent and making a carpet using these, or by mixing the mite control agent of the present invention into a backing agent and using this to make a carpet according to a pre-coat method or a jute back method. In the above, the pre-coat method refers to a method in which a backing agent is applied to the first base fabric to fix the pile, and then a backing agent is further applied to this treated area to adhere the second base fabric. say. In addition, the jute back method refers to a method in which a backing agent is applied to a first base fabric into which pile is woven, and a second base fabric is bonded to the first base fabric. The mite-repellent carpet prepared as described above usually preferably retains about 0.5 to 200 g of the active ingredient per carpet area.

[Operation and effect of the invention]

As described above, the mite control agent of the present invention can be placed, scattered, sprayed, or applied on tatami mats, carpets, floors, hallways, pine mattresses, sofas, bedding such as futons and pillows, closets, storage equipment, warehouses, etc. Excellent mite control effects can be obtained by direct treatment using methods such as , fogging, and heat evaporation, or by installing a mite control material containing the active ingredient in the base material at the above-mentioned locations.

〔Example〕

Hereinafter, the present invention will be explained in more detail with reference to Examples.

However, it should not be limited to this.

Example 1 Efficacy test method against Dermatophagoides nigricans: 5.0 g of feed for raising mites was placed in a waist-high petri dish with a diameter of 9C11 and a height of 6CI, and 3.0 m of a diluted solution of each compound in acetone was dropped into the dish and mixed well. do. After removing the solvent, add 5.0 g of feed (including mites) for breeding mites and stir well. Thereafter, shake once a day, and count the number of live mites in each petri dish under a stereomicroscope after 7 days. The mite mortality rate (%) was determined by the following formula from the number of live mites in the non-chemical treated area and the number of live mites in the treated area, and the results are shown in Table 1.

Mite mortality rate (%) = Number of living mites in untreated area Table 1 Results of the acaricidal efficacy of chinomethionate against Dermatophagoides mites using the medium mixing method.

Table 2 Results of the acaricidal efficacy of chinomethionate against the woolly mites by medium mixing method.

Example 2 Test method for efficacy against woolly mites The mite mortality rate was determined by the same method as in Example 1, and the results are shown in Table 2.

(Left below) Effective against other types of insects such as Dermatophagoides mites, wheat mites, and sugar mites were also obtained.

Example 3 To 15 g of the active compound used in the present invention, add a small amount of fragrance and 20 d of ethyl cellosolve, add odorless kerosene, bind the whole to 150 g, and mix this with a mixture of liquefied petroleum gas and dimethyl ether (1:1 volume ratio). 150I11 was filled into an aerosol pressure can (content: 400 ml), attached to an injection device, and sealed to obtain an aerosol agent.

Example 4 A nonwoven fabric (made of polyethylene pulp, thickness 300 μm, area 1 rrf) was impregnated with the active compound used in the present invention to give Ig, and then dried to obtain a sheet-shaped mite control material.

Example 5 Each of the active compounds of the present invention was thoroughly stirred and mixed with the same weight of silicon oxide, and then pulverized to obtain a powdered mite control material.

Claims (2)

[Claims] (1) A mite control agent containing 6-methylquinoxaline-2,3-dithiocarbonate as an active ingredient. (2) A method for controlling mites using a mite control agent containing 6-methylquinoxaline-2,3-dithiocarbonate as an active ingredient.