JPS622A - Smoking agent or fumigant for exterminating injurious organism - Google Patents

Abstract

PURPOSE:The titled pharmaceutical, consisting of a substance for exterminating injurious organisms, permanganate and polyhydric alcohol having heat generating action on contact with the permanganate and generating heat by containing the latter two components in separate containers and mixing them in use. CONSTITUTION:The titled pharmaceutical constituted of (A) a substance for exterminating injurious organisms, (B) a permanganate, e.g. K salt, Na salt, Mg salt or Ca salt, and (C) a polyhydric alcohol having heat generation action on contact with the permanganate, e.g. ethylene glycol, pentaerythritol or sorbitol, and generating heat by containing the components (B) and (C) in separate containers and mixing both in use. Examples of the component (A) to be used include an insecticide, germicide, repellent, aromatic agent, deodorant, etc. EFFECT:Ammonia, N oxides, etc., are not contained in emitted gases without requiring an ignition tool. The stability with aging is good, and complete hermetical packing is not required.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a composition of a smoke agent or fumigation agent which generates a larvicidal substance by heat. The present invention relates to a fumigant or fumigant for exterminating pests whose main exothermic component is a polyhydric alcohol that exhibits an exothermic effect when brought into contact with an acid salt.

Wataru Shikama 1 Conventionally, various heat generation methods have been devised regarding fumigants or fumigants for exterminating pests. Typical methods include using a combustion agent consisting of a combustible material and an oxidizing agent, using nitrocellulose containing a combustible material and an oxidizing agent in the same molecule, or using a foaming agent. These heat the exothermic components using an igniter or appropriate heating means,
The exothermic component is burned or decomposed, and the combustion heat or decomposition heat generated at this time evaporates the pest control substance. In addition, there are methods that utilize the heat of hydration of calcium oxide, methods that utilize the heat of oxidation reaction of iron powder in the air,
Furthermore, methods of heating using electricity have been devised.

However, in conventional methods that utilize the heat of combustion between combustible materials and oxidizing agents, or methods that utilize the decomposition heat of nitrocellulose or foaming agents, a large amount of combustion decomposition products are generated as smoke, which can contaminate the interior of the room. It can also provide harmful gases to useful plants and animals. Furthermore, conventional combustion
Smoking agents that utilize decomposition heat require an ignition device or heating device. In addition, the method of utilizing the heat of hydration of calcium oxide or the method of utilizing the oxidation reaction of iron powder in the air requires complete exclusion of water or oxygen in the air, which makes the packaging container expensive. I don't get it.

In addition, the electric method requires a place where electricity is available for heating, and has the disadvantages that the place where it can be used is limited, and the structure is complicated and expensive.

Ilf+. As a result of intensive studies to solve these drawbacks, the inventors of the present invention discovered a new fumigant or fumigation agent for exterminating harmful organisms and completed the present invention in order to eliminate such drawbacks.

. In other words, the present invention provides (a) a substance for exterminating pests; (b)
A fumigant or fumigant for exterminating pests characterized by comprising a permanganate and (c) a polyhydric alcohol that has an exothermic effect when brought into contact with the permanganate.

As the permanganate used in the present invention, for example, potassium permanganate, calcium permanganate, sodium permanganate, magnesium permanganate, etc. can be used, or a mixture thereof may be used. Further, these can be used in granular, powdery or lumpy form. In addition, as necessary, sodium peroxide, calcium peroxide, barium peroxide, chromic acid, potassium chromate, sodium chromate, potassium dichromate, sodium dichromate, ammonium dichromate, salad powder, sodium chlorite, Inorganic substances commonly referred to as oxidizing agents can be added, such as barium perchlorate, potassium chlorate, potassium nitrate, ammonium nitrate, barium nitrate, calcium oxide, and the like. Furthermore, it is also possible to add metals such as iron, copper, aluminum, and magnesium, and their oxides, and inorganic minerals such as quartzite, talc, clay, kaolin, and bentonite.

The polyhydric alcohol used in the present invention may be any polyhydric alcohol that has an exothermic effect when brought into contact with permanganate, such as ethylene glycol,
Diethylene glycol, triethylene glycol, propylene glycol, polyethylene glycol, polypropylene glycol, glycerol, 3-methylpentane-1,3,5-triol, pentaerythritol, sorbitol, hexalene gelicol, 1.3-49 diol, 1.2 .6-hexanetriol and the like, and mixtures thereof may also be used. Furthermore, the component (c) of the present invention is not limited to these polyhydric alcohols. Furthermore, various substances can be added to the component (c) of the present invention as heat generation aids for the purpose of improving the heat generation state such as the heat generation temperature or the physical properties of the polyhydric alcohol used. Examples of heat generating aids include alcohols such as ethanol and propatool, nitric acid esters such as nitrocellulose, blowing agents such as azocabonamide and dinitrosopentamethylenetetramine, and organic acids such as acetic acid, oxalic acid, phosphoric acid, and sulfuric acid. and inorganic acids, amines such as melamine benzoguanamine, binders such as carboxymethylcellulose and hydroxypropylmethylcellulose, and inorganic carriers such as magnesium carbonate, calcium carbonate, and clay.

The substance for controlling pests of the present invention includes commonly used agricultural chemicals such as insecticides, fungicides, repellents, etc., and aromatics and deodorants are also used. Typical examples of these compounds include 3-allyl-2-methyl-4-oxo-2-cyclopentenyl d1-cis/trans-chrysanthemate, (1,3,4,5,6,7- hexahydro-1,3-dioxo-2-isoindolyl)methyl d
l-cis/trans-chrysanthemer), [:5-(2
-propynyl)-2-furylcomethyl di-cis/trans-chrysanthemate, (5-benzyl-3-furyl)methyl dl-cis/trans-chrysanthemate, 3
-phenoxydibenzyl-2,2-dimethyl-3-(2'
, 2'-/chloro)vinylcyclopropanecarboxylate), O-(2,2-dichlorovinyl)0.0-dimethylphosphate, 0.0-diethyl 0-(2-isopropyl-4-methyl-6 -pyrimidinyl) phosphorothioate, 0-(1,2-dibromo-2,2-dichloroethyl)0.0-dimethylphosphate, S-[1,2-bis(ethoxycarbonyl)ethyl 10.0-dimethyl Phosphorodithioate, tetrachloroinphthalonitrile, pentachloronitrobenzene, 3- (3,5-
')'ychloroenyl)-N-isopropyl-2,4-
Dioxoimidacillin-1-carboxamide, 3-
(3゜5-dichlorophenyl)-5-methyl-5-vinyloxazolidine-2,4-dione, 2,3-dichloro-1,4-naphthoquinone, NN-diethyl-m-toluamide, di-n-butylsuccinate etc.

The pest control substance of the present invention includes oxidizing agents such as potassium chlorate and potassium nitrate, blowing agents such as azocicabonamide, dinitron pentamethylenetetramine, and P-toluenesulfonyl hydrazide, nitrocellulose, melamine,
It is also possible to use a mixture of amines such as benzoguanamine, binders such as carboxymethylcellulose and starch, and inorganic carriers such as magnesium carbonate, calcium carbonate, clay, and kaolin.

The optimal amount of polyhydric alcohol used in the present invention is 20 parts by weight or more per 100 parts by weight of permanganate.

In addition, the amount of the pest control substance varies depending on the physical properties such as vapor pressure of the substance, but it is important to mix an appropriate amount of the blowing agent or nitrocellulose mentioned above, as well as the type and amount of polyhydric alcohol used. Generally, any ratio can be used by adjusting.

The fumigant or fumigant of the present invention is such that permanganate and polyhydric alcohol do not come into contact with each other and are stored in separate containers, and when used, they are brought into contact to generate heat. Therefore, before use, it is only necessary to package the permanganate and polyhydric alcohol so that they do not come into contact with each other.
There is no problem with either method for its structure. For example, permanganate is placed in a container and polyhydric alcohol is placed in a separate container to be injected at the time of use, or the polyhydric alcohol is adsorbed onto a carrier or in gel or solid form. It is also possible to remove the partition and press the product into contact with the permanganate tablet stored in the partition.

The features of the pest control fumigant or fumigation agent of the present invention are as follows:
By utilizing the fact that when polyhydric alcohols are brought into contact with permanganate, the polyhydric alcohols oxidize and decompose on the surface of the permanganate, generating heat. Heat generation starts simply by mixing polyhydric alcohol with permanganate, and the amount of smoke (7) generated along with the heat generation is small.Furthermore, conventional smoke agents such as ammonia or nitrogen oxide are used as gas components. It does not contain the gas that caused the problem. In addition, the smoke agent or fumigant of the present invention has excellent stability over time and does not require packaging conditions such as complete sealing, which is required when calcium oxide or iron powder is used.
Also, since it does not use electricity, there are no restrictions on where it can be used (this has great industrial significance).

11th day Next, the present invention will be explained by Examples and Test Examples.

Example 1 Ethylene glycol sealed in a cylindrical metal container and a plastic container 3. Og and propylene glycol 1.
Place 0g of the mixture and add potassium permanganate on top of this.
Filled with 4.0 g of 1.5 g of diatomaceous earth mixture, and placed a metal dish on top containing 1.0 g of O-(2,2-dichlorovinyl)0.0-dimethylphosphate (DDVP). An insecticidal fumigant was made. Approximately 1 minute after the plastic container was destroyed by inserting a metal needle into the bottom of the container, smoke started to be generated, and the smoke generation time was 90 seconds. Also,
The volatilization rate of DDVP was 78.6%.

Example 2 Sodium permanganate 5.0g1 Sodium peroxide 1.0g Clay 5.0g in a ceramic paper bag
This was placed in a metal cylindrical container with a wire mesh bottom, and a mixture of 4.0 g of tetrachloroinphthalonitrile (TPN) and 3.0 g of clay was filled from above. In another container, 5.0 g of ethylene glycol, '1 2.0 g of lyserine, 2 ethanol
．． Take a solution consisting of 0 g, place the container shown above in this container, and let the polyhydric alcohol solution permeate the ceramic spafer. About 1 minute after the container was allowed to stand, smoking started, and the smoking time was 76 seconds. The volatilization rate of TPN was 80.4%.

Example 3 0, O-dimethyl〇-(2-isopropyl-4-methyl-6-pyrimidyl) phosphorothioate (Diazinon) 1.5 gll, 2.6-hexanetriol 4.0 g1 ethylene glycol 2. Og.

2.5 g of nitrocellulose was mixed and filled into a metal cylindrical container. 1.0 g of potassium permanganate formed into pellets was forced into the contents of the container, and after about 40 seconds, the start of smoke generation was observed, and the smoke generation time was 90 seconds. Further, the volatilization rate of diazinon was 76.9%.

Test Example 1 A test of the insecticidal efficacy of the compositions shown in Examples 1 and 3 against German cockroaches was conducted in a living room of 8 tatami mats. The number of insects tested was 100, and the test was conducted using a Nelter. The results are shown in Table 1.

Table 1 Test Example 2 The amount of ammonia and nitrogen oxides released during smoking was measured using a conventional smoking agent based on nitrocellulose and blowing agent as a control agent. The sample was smoked in a living room with 8 tatami mats, and after 15 minutes had passed after smoking and the smoke was evenly distributed, a certain amount of the air in the room was collected by suction. Ammonia was collected using the indophenol method, and nitrogen oxides were collected using the Zarraman method. Each was quantified by

The results are shown in Table 2.

Table 2 Test Example 3 Inside a vinyl greenhouse (20X4X2m volume approximately 180m)
Cucumber seedlings (plant height: 1
m) Select 6 new leaves for each plot from 10 locations, cover 3 of them with a plastic bag to serve as an untreated area, and then collect 5 pieces of the smoke agent of Example 2 from inside the plastic greenhouse and culture the gray leaves in advance. An 8 mm square piece of fungal mycelium was brought into contact with the center of the leaf, and then the leaves in the smoke treated area were also covered with a plastic bag to promote the onset of the disease.

As a result of measuring the length of lesions 5 days after the smoking, it was found that gray mold had developed in the untreated area covered with a plastic bag, but no progress was observed in the smoking area.

Claims (1)

[Scope of Claims] 1) consisting of (a) a pest control substance, (b) permanganate, and (c) a polyhydric alcohol that has an exothermic effect when brought into contact with permanganate. Characteristic pest control fumigants or fumigants. 2) the (c) permanganate is potassium, sodium,
The fumigant or fumigant for pest control according to the above item 1, which contains at least one selected from permanganates of magnesium and calcium. 3) A smoke agent for exterminating pests that is configured to contain at least a component containing said (b) and a component containing said (c) in separate containers, and to generate heat by mixing the two. Fumigants.