JPH03170402A - Aerosol insecticide - Google Patents

Abstract

PURPOSE:To provide the subject quick acting insecticide composed of an insecticidal component selected from a pyrethroid-, organophosphorous- and carbamate- based compound, a solvent composed of tripropylene glycol monomethyl ether, etc., and kerosine and a propellant. CONSTITUTION:An objective insecticide composed of (A) 0.03-3wt.% insecticidal component selected from a pyrethroid-based compound [e.g. 3-phenoxybenzyl(1RS)-cis, trans-chrysanthemate], an organophosphorous-based compound and a carbamate-based compound, (B) 40-80wt.% solvent containing tripropylene glycol mono or dialkyl ether and kerosine in a weight ratio of (1:200)-(2:1) [preferably 1:60)-(1:2)] and (C) 20-60wt.% propellant (e.g. LPG). The above-mentioned insecticide has an excellent insecticidal effect and a remarkably excellent quick acting property especially for sanitary insect pests.

Description

[Detailed description of the invention] Industrial application fields> The present invention relates to aerosol insecticides.

<Prior Art and Problems to be Solved> Aerosol insecticides containing kerosene as a solvent have been widely used, but they are not always sufficient in terms of insecticidal efficacy.

Means for Solving the Problem> In view of the above situation, the inventors of the present invention have conducted intensive studies on the solvents of aerosol insecticides, and found that 1.
Containing one or more pyrethroid compounds, organophosphorus compounds or carbamate compounds, and as a solvent (a)
That is, tripropylene glycol monoalkyl ether or tripropylene glycol dialkyl ether represented by the general formula [I] (wherein Rl represents a hydrogen atom or an alkyl group, and R2 represents an alkyl group), and (bl kerosene and the mixing ratio of (a) and (b) is 1: by weight.
It has been discovered that an aerosol insecticide prepared by blending a propellant into an aerosol stock solution characterized by a ratio of 200 to 2:1 has extremely excellent insecticidal efficacy, and the present invention has been achieved. Tripropylene glycol monomethyl ether is particularly preferred as the solvent fa) from the viewpoint of insecticidal efficacy.

The fact that tripropylene glycol monomethyl ether can be used as a solvent in the field of forest pesticides can be found, for example, in the Journal of Economic Entomology.
Entomology) 66, 274 (1973)
However, the present invention has discovered that a solvent prepared by mixing the solvent or its derivative with kerosene at a specific mixing ratio is extremely suitable for an aerosol insecticide. In the aerosol insecticide of the present invention, examples of pyrethroid compounds that can be used as insecticidal ingredients include 3-phenoxybenzyl (IRs)-cis, trans-chrysanthemate [phenothrin] (RS)-α-cyano 3 -Phenoxybenzyl (IR) monocis, trans-chrysanthemate [Ciphenothrin] 3-Phenoxybenzyl (IRS) monocis, trans-3-(2,2-dichlorovinyl)-22-dimethylcyclopropanecarboxy rate [permethrin] (RS)-3-aryl-2-methyl-4-oxocycbento-2-enyl (IRS) monocis-trans-chrysanthemate [allethrin] (R,S)-mono-alpha-cyano-3-phenoxybenzyl (IRS) Monocis,trans-3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylate [Cypermethrin] (S) Mono-α-cyano-3-phenoxybenzyl (I
R) -cis-3-(2,2-dibromovinyl)-2.2
-dimethylpropaneylpoxylate [deltamethrin] 3,4,5,6-tetrahydrophthalimidomethyl (
IRS) one-cis, trans-chrysanthemate [tetramethrin] (S)-2-methyl-4-oxo-3-(2-brovinyl)cycloben-2-enyl (1R) one-cis, trans-chrysanthemate [prarethrin] 5-benzyl-3-furylmethyl (IRS) monocis,
trans~chrysanthemate [resmethrin] (RS) -α-cyano-4-fluoro-3-phenoxybenzyl (IRS) -cis, trans-3-(2.2
-dichlorovinyl)-2,2-dimethylcyclopropane rupoxylate [cyfluthrin] 2,4-dioxo-l-(2-provinyl)imidazolidin-3-ylmethyl (IRS)-cis,trans-chrysanthemate 5-( 2-provinyl)furfuryl (IRS)-cis,trans-chrysanthemate [flamethrin] 2-(4-ethoxyphenyl)-2-methylpropyl
Examples include 3-phenoxybenzyl ether.

Examples of organic phosphorus compounds include 2,2-dichlorovinyl dimethyl phosphate [dichlorovos], 0,0-dimethyl 〇1 (3-methyl-4-nitrophenyl) phosphorothioate [fenitrothion], and the like. Examples of carbamate compounds include 2-(1-methylethoxy)phenol methyl carbamate [propoxer]. Incidentally, among these compounds, if stereoisomers and optical isomers exist, these isomers and mixtures thereof can also be used as the insecticidal component of the insecticide of the present invention.

The blending amount of such insecticidal components is usually 0.01 to 10% by weight, preferably 0.03 to 3% by weight, based on the total amount of the aerosol insecticide.

General formula (I) used in the aerosol insecticide of the present invention
Solvents represented by (al) include, for example, tripropylene glycol monomethyl ether (R'=H, R2=Clh in the general formula [E]), tripropylene glycol monoethyl ether (R'= in the general formula [■])
H, R2=C2Hs), etc. The solvent (a)
The mixing ratio of (b) and kerosene, which is another solvent, is 1:200 to 2:l, preferably 1:1 by weight.
The ratio is 60 to 1:2, and the total blending amount is usually 40 to 80% by weight based on the total amount of the aerosol insecticide.

Examples of propellants used in the aerosol insecticide of the present invention include liquefied petroleum gas (LPG), dimethyl ether (DME), carbon dioxide, nitrogen, butane gas, and chlorofluorocarbon gas that does not cause environmental damage. The amount of these mixed is usually 20 to 60% by weight based on the total amount of the aerosol insecticide.

The aerosol insecticide of the present invention can also be used in combination with insect growth regulators, synergists, fragrances, fungicides, etc., if necessary.

Examples of insect growth control agents include isoprovil (2E,4E)-1 1-methoxy3
,7,l1-trimethyl-2,4-dodecadienoate [methoprene], ethyl (2E,4E)-3.7.11-1-trimethyldodecadienoate [hydroprene], l-( 4-chlorophenyl)-3-(2.6difluorobenzoyl)urea [diflubenzuron], N-cyclopyl-1.3.5-1 riazine-2.4
．． 6-triamine [Solomacin], etc. can be mentioned.

As a synergist, for example, α-(2-(2-butoxyethoxy)ethoxy)-4,5-methylenedioxy-2-
Probyltoluene [piperonyl butoxide], N-(2
-ethylhexyl)bicyclo(2,2.1)heptose 5
-en-2,3-dicarboximide CMGK 2
6 4), octac dibrovir ether [S-4
2 1) and Cinepirin 500■.

The aerosol insecticide of the present invention can be prepared, for example, by mixing predetermined amounts of one or more insecticidal ingredients, tripropylene glycol monoalkyl ether or tripropylene glycol dialkyl ether, and kerosene at room temperature or under heating.
It is prepared by dissolving the aerosol stock solution, placing it in an aerosol container, attaching a valve part to the container, and filling the propellant under pressure through the valve part.

Examples of pests against which the aerosol insecticide of the present invention prepared in this manner is effective include the following.

Diptera pests, Culex mosquitoes, such as Culex mosquitoes, Culex mosquitoes, Aedes mosquitoes, such as Aedes albopictus, Aedes albopictus, such as Aedes albopictus, Anopheles insects, such as Chironomid mosquitoes, house flies, house flies such as the common house fly, black flies, black flies, Hana flies, fruit flies, fruit flies, fruit flies, butterflies, horseflies, blackflies, stable flies, and other insect pests of the order Messoptera; pests of the order Messoptera, such as the German cockroach, black cockroach, American cockroach, brown cockroach, and black cockroach; Pests, Isopteran pests such as ants, wasps, wasps, wasps, etc., ticks such as Japanese termites and Japanese termites, indoor dust mites such as the Japanese tick, dust mites, house dust mites, claw mites, house dust mites, etc. <Examples> Hereinafter, the present invention will be explained in more detail with reference to Examples and Comparative Examples, but the present invention is not limited to these Examples.

In addition, in the following examples, parts represent parts by weight.

Example l Prarethrin (acid side (IR) - cis/trans (2
0/8 0) and alcohol side is S form) 0.1 part, cyphenothrin (acid side is (IR) one cis/trans (2
0/8 0) ) 0. 3 parts tripropylene glycol monomethyl ether and 59 parts kerosene.
Mix and dissolve 3 parts under heating, put it in an aerosol container, attach a valve part to the container, and apply L through the valve part.
P G 4 0. 0 parts was filled under pressure to obtain an aerosol.

Table 1 shows the aerosol of the present invention and a comparative aerosol (hereinafter referred to as a comparative example) obtained in the same manner as above.

Table ■ Aerosols of Examples 1 to 6 and Comparative Examples 1 to 4 4 each
00 mg was directly sprayed from 60 cm above the heads of German cockroaches in a cylinder, and the knockdown efficacy was determined. Expressed in minutes (minutes). The result (5 repetitions)
are shown in Table 2.

Example 7 Tetramethrin (acid side is cis/trans (20/80)
) 0.3 parts, d-phenothrin (acid side (IR) - cis/trans (20/80)) 0. 3 parts 20.0 parts of tripropylene glycol monomethyl ether and 39.4 parts of kerosene are mixed and dissolved under heating, placed in an aerosol container, a valve part is attached to the container, and L P G 4 0.0 is passed through the valve part. An aerosol was obtained by filling a portion under pressure.

Table 3 shows aerosols of the present invention obtained in the same manner as above and comparative examples.

Table 3 Regarding each aerosol of Example 7 and Comparative Examples 5 to 9,
The knockdown efficacy against German cockroach was investigated by the same method as described in the test examples for Examples 1 to 6.

The results are shown in Table 4.

Example 3 d-Allethrin (acid side (IR) - cis/trans (2
0/8 0) ) 0. 4 parts, vermethrin 0.3
Part, tripropylene glycol monomethyl ether l.
Part O and 58.3 parts of kerosene are mixed and dissolved under heating, placed in an aerosol container, a valve part is attached to the container, and 0.0 part of LPG4 is filled under pressure through the valve part to form an aerosol. Obtained.

Aerosols obtained in the same manner as above are shown in Table 5.

＼ ＼ Table 5 For each aerosol of Examples 8 to 12, Examples 1 to 6
The knockdown efficacy against the German cockroach was investigated using the method described in the test example. The results are shown in Table 6.

Table 6 For each of the aerosols in Examples 8 to 12, the CSMA aerosol test method (Beat Grady chamber method) was used.
Table 7 shows the results of examining the knockdown efficacy (KT50 or 50% knockdown time) against flies and mosquitoes.

Table 7 Effects of the Invention The aerosol insecticide of the present invention has excellent insecticidal efficacy, and particularly has extremely excellent rapid efficacy against sanitary pests.

Claims (1)

[Claims] (1) Contains one or more pyrethroid compounds, organophosphorus compounds, or carbamate compounds as an insecticidal component, and (a) tripropylene glycol monoalkyl ether or tripropylene glycol dialkyl ether as a solvent, and (b) Contains kerosene, and the mixing ratio of (a) and (b) is 1 by weight
An aerosol insecticide prepared by blending a propellant into an aerosol stock solution characterized by a ratio of :200 to 2:1.