JPS584531B2 - ``San'' cloth method for termite control agent - Google Patents

Description

[Detailed description of the invention] The present invention relates to a method for spraying a termite control agent.

Conventionally, termite control chemicals have been applied by brushing, spraying, etc., but it is not possible to absorb a sufficient amount in one treatment on the backs of floorboards, and on vertical surfaces, the chemicals tend to flow down. There were drawbacks such as the inability to retain the required amount of drug.

In addition, conventional spray treatments produce fine droplets or mist, which remain suspended in the air for a long time, which poses a danger if they come into contact with the human body or enter the eyes or nose.

According to the method of the present invention, since the pesticidal agent is in the form of fine bubbles, it can be retained in large amounts for a long time when applied to vertical surfaces or horizontal surfaces facing downward, and therefore Since it is gradually absorbed into the structure, there is no loss due to flowing down.

Therefore, all drugs can be fully utilized.

Furthermore, since the drug is in the form of a foam, it will not adhere to the mucous membranes of the worker's skin, eyes, nose, etc. and harm his or her health.

The method of the present invention involves adding a foaming agent and a specific foaming aid to a commonly used termite control agent, and using a known method, for example, vigorously stirring while blowing air as necessary, to generate as many fine bubbles as possible. This may be applied with a brush, or the nozzle may be removed using an ordinary sprayer and the foaming portion may be sprayed onto the target object, or the chemical solution may be sprayed at the same time as air is mixed in and foamed. It may also be sprayed onto the target.

It is preferable that the foam of the pesticidal agent applied to the target object be as large as possible and not run down, and the concentration should be determined as necessary.

Organic chlorine-based agents for controlling night ants include chlordane, deirdrin, heptachlor, aldrin, D. D. T.
, γ-BHC, toxaphene, thiodane (generic name benzoepine, hexachlorhexahydromethanobenzodioxachepine oxide), isodrine, endrin,
Heptachlor epoxide, water-soluble antiseptic insecticides such as Polyden salt, Glynn salt, Wolman's salt, Cellcure (K2C)
r2075.6, CuS045.6, acetic acid 0.25, water 88.55), boric acid, sodium octaborane tetrahydrate as boron type, α-chlornaphthalene, dichlornaphthalene as chlornaphthalene type. , trichlornaphthalene, PCP as chlorphenol type
ester (laurate), 2-chloro-orthophenylphenol, organotin-based compounds such as tributyltin oxide and dioctyltin acetate, and organophosphorus-based compounds such as sumithion (common name: MEP, dimethyl (3-methyl-4
-nitrophenyl)thiophosphate), diaziin (2-isopropyl-4-methylpyrimidyl-6)-diethylthiophosphate), Marathon (dimethyldicarbethoxyethyldithiophosphate), Pygit (common name MPP, 0.0-dimethyl-10- [3-methyl-4-
(methylthio)phenyl]thiophosphate), daazban (generic name: chlorpyrifos, 0.0-diethyl-o7)
(3,5,6-trichloro-2-pyridyl) phosphorothioate), α and p-dichlorobenzene as dichlorobenzene series, naphthyl N-methylcarbamate, 3,5-dimethyl-4- as carbamate series
Methoxyphenyl-N-methylcarbamate, 3-methyl-4-methoxyphenyl-N-methylcarbamate,
Famido (generic name: dioxacarb, 2-(■・3-dioxolan-2-yl) monophenyl methylcarbamate)
, as an aniline type, chloromethylsulfonyl-2.4
-Dichloroaniline, Kepone-based decachloro-octahydro-1,3,4-itano-2H-dichlorobuta (
cd) Pentalen-2-one, decachlorooctahydro-1,3,4-methanol 2H-cyclobuta (cd)
Examples of pentalene carbinol and carbonates include petachlorphenyl carbonate and chrysanthemum acid derivatives.

1. As blowing agents that can be used in the present invention,
Anionic, nonionic, amphoteric surfactants based on higher fatty acids and higher alcohols, such as sodium dodecyl sulfate, dodecyl ammonium sulfate, sodium dodecyl polyoxystyrene sulfate, polyoxyethylene lauryl ether, polyoxyethylene sorbitan monolaurate, polyoctyl polyamino Examples include ethylglycine and imidazoline derivatives.

In addition, as foaming aids, higher alcohols such as lauryl alcohol, sodium salt of carboxymethyl cellulose,
Water-soluble polymers such as polyvinyl alcohol, sodium alginate, and saponin can be used.

Next, the method of the present invention will be further explained with reference to examples.

Example 1 The termite control agent Antizer D (manufactured by Kyoritsu Organic Industrial Research Institute) is diluted 10 times with water according to the prescribed usage method.

Add 5 to 10% of the foaming agent and foaming aid described below, put it in an ordinary sprayer, seal it, and stir vigorously to foam it. Remove the nozzle and spray the foamed area with a size of 50 x 50 cm. It was sprayed onto a 4mm thick plywood board.

The plywood was kept vertical and the thickness of the foam was approximately 30m.
m, and the amount of drug attached is 110 to 80 g/5
It was 0 x 50 cm'.

In addition, as a control test, when a normal termite control agent without foaming was sprayed, the amount was approximately 30 g/50 x 50 cm', and the excess sprayed agent flowed down and dripped from the bottom side.

After 2 minutes, it was sprayed again, and about 25 g was attached, for a total of about 55 g.

In the case of the foamed pest control agent in the above example, the appearance is similar to that of a styrofoam board stuck to a plywood board, with no liquid flowing down at all, and the agent gradually attaches to the plywood board in the indoor air. The thickness of the absorbed surface after 15 minutes is 1
/3, and after 20 minutes, some bubbles remained, and 10
After a few minutes, there were only traces left.

The foaming agent and foaming aid mixed into the drug have the following composition.

Saponin 40g Imidazoline surfactant 20g Water 30g When the above composition was added to a termite control agent Antizer-DIO% aqueous solution at 3% and 6%, the results shown in Table 1 were obtained.

From the above comparison, 2.5 to 3
．． It was confirmed that 5 times the amount had adhered.

The composition of Untizer E is as follows: Deirdrin 10% Solvent 83% Emulsifier 7% Example 2 A 20x aqueous solution of Untizer E (manufactured by Kyoritsu Organic Industrial Research Institute) was added to the following foaming solution in the same manner as in Example 1. Add 3% and 6% of A and B, respectively, to create a foamed solution, and add 2% of this foam.
A 4 mm thick plywood board measuring 0 cm x 50 cm was held vertically and painted with a brush.

The first time is applied strongly to the surface, then the second time is applied lightly with a brush,
The thickness of the foam was approximately 6 cm.

The amount of adhesion was 15 to 20 g, whereas with the same chemical solution without a foaming agent, the drug foam flows down and the amount of adhesion is 1.
It was 0 to 11 g.

In the case of the foamed drug solution, the entire amount was absorbed after 10 minutes.

The foaming liquids A and B in this case have the following compositions.

Human lauryl alcohol sulfate ammonium 20g isopropyl alcohol 20g acyl alcohol
5g water
80g (B) Sodium dodecylbenzenesulfonate 20g isopropyl alcohol
40g acyl alcohol 5g water
Table 2 shows the results of adding 3% and 6% of the above (A) and (B) to a 20 times aqueous solution of 60 g of Antizer E and foaming them.

The composition of Untizer D is as follows.

Deirdrin 5% Solvent 75% Preservative (pep) 5% Emulsifier 15% Example 3 Foaming solutions (C), (D), (E), and (F″) were prepared as follows.

(C) (D) Sodium lauryl sulfate 10y' 1oz isopropyl alcohol 1oY 10f saponin
10? 20? water
3og 3og (E) (F) Polyoxyethylene Al 20P 20gyl Sodium Sulfate Isopropyl Alcohol 3M' 30f Polyvinyl Alcohol IOP 20P Water
50P 50g of this product was added to a 20 times solution of Untizer E (mentioned above) as follows and foamed.

Their foaming ratio (CC/g) and foam duration (min)
was as shown in Table 3.

Example 4 A wettable powder consisting of chlordane 40% (wt%), surfactant 10%, and inorganic carrier 50% is diluted with water, and Example 10 foaming agent and foaming aid are added to form an air intake hole in the nozzle part. The same effect as in Example 1 was obtained by spraying the foam onto the object using a sprayer.

In the present invention, many termite control agents other than deirdrin and chlordane can be similarly used.

According to the method of the present invention, when spraying a termite control agent on a wooden structure, its floor, the back of the floorboards, the soil under the floor, etc., the agent is made into a foam and is deposited as a thick film on the surface of the object. This method is extremely advantageous compared to conventional methods, as it allows drug solution to be absorbed over a long period of time, retains a larger amount of drug than conventional methods, and causes no loss of drug.

Claims (1)

[Claims] 1. When spraying termite control chemicals on wooden structures, other objects such as floors, the back of floorboards, soil under floors, etc., the above chemicals are mixed with higher fatty acids and/or higher alcohol-based anionic, nonionic, or amphoteric surfactants as foaming agents. One or more selected from the group consisting of higher alcohols, sodium salts of carboxymethyl cellulose, polyvinyl alcohol, sodium alginate, and saponin are used as foaming aids, and the foam is deposited on the surface of the object in the form of a thick film to achieve long-lasting results. A method for distributing a termite control agent, which is characterized by retaining a large amount of termite control agent for a large amount of time to increase absorption efficiency.