JP2001002511A - Composition for whole amount-jetting type insecticidal aerosol - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a composition for a whole amount-jetting type insecticidal aerosol exhibiting excellent controlling effects against harmful pests. SOLUTION: This composition for a whole amount-jetting type insecticidal aerosol comprises (a) 1-methyl-2-nitro-3-[(3-tetrahydrofuryl)methyl]guanidine, (b) one kind of a polar solvent selected from a group of benzyl alcohol and propylene carbonate, (c) water and (d) a propellant containing >=50 wt.% dimethyl ether based on the whole amount of the propellant.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

FIELD OF THE INVENTION The present invention relates to a full spray type insecticidal aqueous aerosol composition.

[0002]

2. Description of the Related Art 1-Methyl-2-nitro-3-[(3-
Tetrahydrofuryl) methyl] guanidine is disclosed in
No. 179448, which is an insecticidal compound, and an aerosol composition of the compound is disclosed in JP-A-8-217.
No. 606.

[0003]

However, when the composition for aerosol described in JP-A-8-217606 is used, 1-methyl-2-nitro-3-[(3-tetrahydrofuryl) methyl] guanidine is used. However, there is a problem that the insecticidal effect is not sufficiently exhibited.

[0004]

Means for Solving the Problems The present inventors have made intensive studies in such a situation and found that (a) 1-methyl-2-
Nitro-3-[(3-tetrahydrofuryl) methyl] guanidine, (b) one polar solvent selected from the group consisting of benzyl alcohol and propylene carbonate, (c) water,
And (d) it has been found that the all-injection type pesticidal aqueous aerosol composition containing a propellant containing 50% by weight or more of dimethyl ether based on the total weight of the propellant can exert an excellent control effect on harmful pests. This has led to the present invention. That is, the present invention relates to (a) 1-methyl-2-nitro-3-
[(3-tetrahydrofuryl) methyl] guanidine (hereinafter, referred to as the present compound), (b) one polar solvent selected from the group consisting of benzyl alcohol and propylene carbonate, (c) water, and (d) jetting Provided is a total spray type insecticidal aqueous aerosol composition (hereinafter, referred to as the present invention composition) containing a propellant containing 50% by weight or more of dimethyl ether based on the total weight of the agent.

[0005]

DETAILED DESCRIPTION OF THE INVENTION The weight ratio of polar solvent to water in the composition of the present invention is in the range of 2: 1 to 1:20. The weight ratio of the present compound to the polar solvent is in the range of 1: 4 to 1: 100 when the polar solvent is benzyl alcohol, and is in the range of 1: 9 to 1: 100 when the polar solvent is propylene carbonate. It is. In the composition of the present invention, the weight ratio of the liquid part comprising the present compound, the polar solvent and water to the propellant is usually in the range of 4: 6 to 1: 9, preferably 3: 7 to
The range is 1: 9.

In the composition of the present invention, the propellant contains dimethyl ether in an amount of 50% by weight or more based on the total weight of the propellant. Examples of components other than dimethyl ether include propane, n-butane and isobutane.

A full spray aerosol containing the composition of the present invention can be produced, for example, as follows. After dissolving the present compound in a polar solvent at room temperature or under heating, the solution and water are filled in an aerosol container. The container is equipped with an aerosol valve, filled with a propellant through a stem, shaken, and then fitted with a total release (full-volume type actuator).

[0008] The composition of the present invention further comprises other insecticidally active compounds such as pyrethroid compounds and carbamate compounds;
Increase insecticidal efficacy by adding repellents, synergists, etc.,
A better aerosol composition can be obtained. Such other insecticidal active ingredients include, for example,
Tetramethrin, Praretrin, Phenothrin, Resmethrin, Cyphenothrin, Permethrin, Cypermethrin, Deltamethrin, Tralomethrin, Cyfluthrin,
Flamethrin, imiprothrin, etofenprox, fenvalerate, fenpropathrin, silafluofen, transfluthrin, 2-methyl-4-oxo-3- (2-propynyl) -cyclopent-2-enyl 3- (2,2-dichloro Pyrethroid compounds such as vinyl) -2,2-dimethylcyclopropanecarboxylate; organic phosphorus compounds such as dichlorvos, fenitrothion, tetrachlorovinphos, fenthion, chlorpyrifos, diazinon; , Chlorfluazuron, hexaflumuron, diflubenzuron, cyromazine, 1- (2,6-
Difluorobenzoyl) -3- [2-fluoro-4-
Chitin formation inhibitors such as (1,1,2,3,3,3-hexafluoropropoxy) phenyl] urea; juvenile hormone-like substances such as pyriproxyfen, methoprene, hydroprene, and phenoxycarb; N-phenylpyrazole System compounds and the like, as repellents, for example,
N, N-diethyl-m-triamide, limonene, linalool, citronellal, menthol, menthone, hinokitiol, geraniol, eucalyptol, indoxacarb, curan-3,4-diol, and the like. For example, PBO, MGK264, S42
1, IBTA, Sinepirin 500 and the like. Further, a surfactant, a buffer, a fragrance, a rust inhibitor, a fungicide, and the like can be added to the composition of the present invention, if necessary.

The composition of the present invention comprises a German cockroach (Blatte
lla germanica), black cockroach (Periplaneta fuligin)
osa) and cockroaches (Periplaneta americana), but they are most suitable for controlling cockroaches, but they are also effective enough for other pests. Examples of such other pests include the following. Housefly pests (Musca domestica) and house flies (Muscina stabula)
ns) and flies, Culex pipiens pallen
s), Culex tritaeniorhynchus,
Aedes such as Aedes albopictus (Culex quinquefasciatus) and Aedes albopictus (Aedes albopictus), Tyrophagus putrescentiae, Dermatophagoides farinae (Der)
matophagoides farinae), stag beetle (Cheyletus)
indoor ticks such as malaccensis) and red ticks (Cheyletus moorei); white lice (Pediculus humanus corp.)
or lice). Examples of wood pests include termites such as Yamato termite (Reticulitermes speratus) and house termite (Coptotermes formosanus), bark beetles, and the like. Examples of unpleasant pests include midges, flies, ants, and bees. As clothing pests, Iga (Tinea translucens) and Kioga (T
ineola bisselliella). Animal pests include cat flea (Ctenocephalides felis) and dog flea (Ct
enocephalides canis), human flea (Pulex irritans),
Fleas such as Xenopsilla cheopis, Haemaphysalis longicorni
s), Tick (Ixodes ovatus), Tick (Boo
ticks such as philus microplus) and bovine lice (Haemato)
pinus eurysternus). Peach aphid (Myzus persicae) as an agricultural pest
Aphids, etc., the blue stink bug (Nezara antenna)
ta) and other stink bugs and brown planthopper (Laodelphax str
hoppers such as iatellus) and whiteflies such as silver leaf whitefly (Bemisia argentifolii).

[0010]

EXAMPLES Hereinafter, the present invention will be described in more detail with reference to Examples, but the present invention is not limited thereto.

Formulation Example 1 1 part by weight of 1-methyl-2-nitro-3-[(3-tetrahydrofuryl) methyl] guanidine (the present compound) and 0.15 part by weight of d · dT-cyphenothrin Is dissolved in 10 parts by weight of propylene carbonate, placed in an aerosol can, and water is added to make a total of 20 parts by weight. After installing an aerosol valve in an aerosol can, the mixture is filled with 80 parts by weight of a dimethyl ether / liquefied petroleum gas 9/1 mixture, shaken, and then mounted with a total release actuator to obtain the aerosol formulation.

Production Example 1 29.0 mg of the present compound was added to 0.971 g of benzyl alcohol.
(Manufactured by Wako Pure Chemical Industries, Ltd.) and add 50 ml of the solution.
The mixture was placed in a volumetric aerosol can, and 4.00 g of water was added to make a total of 5.00 g. After attaching the aerosol valve to the aerosol can, it is filled with 20.0 g of dimethyl ether,
After shaking, the aerosol formulation 1 was obtained by mounting an actuator for total release.

Preparation Example 2 This aerosol preparation 2 was obtained in the same manner as in Preparation Example 1, except that 0.971 g of propylene carbonate (manufactured by Wako Pure Chemical Industries, Ltd.) was used instead of 0.971 g of benzyl alcohol.

Reference Production Example 1 Reference aerosol preparation 1 was obtained in the same manner as in Production Example 1, except that 0.971 g of isopropyl alcohol (manufactured by Kanto Chemical Co., Ltd.) was used instead of 0.971 g of benzyl alcohol.

Reference Production Example 2 29.0 mg of the present compound was added to 4.971 g of benzyl alcohol.
(Manufactured by Wako Pure Chemical Industries, Ltd.) and add 50 ml of the solution.
The container was placed in an aerosol can. An aerosol can was fitted with an aerosol valve, filled with 20.0 g of dimethyl ether, shaken, and then fitted with a total release actuator to obtain Reference Aerosol Formulation 2.

Reference Production Example 3 4.971 g of benzyl alcohol in Reference Production Example 2
Was used instead of 4.971 g of propylene carbonate (manufactured by Wako Pure Chemical Industries, Ltd.) to obtain Reference Aerosol Formulation 3.

Reference Production Example 4 4.971 g of benzyl alcohol in Reference Production Example 2
Was used instead of 4.971 g of isopropyl alcohol (Kanto Chemical Co., Ltd.) to obtain Reference Aerosol Preparation 4.

Reference Production Example 5 29.0 mg of the present compound was placed in a 50 ml aerosol can, and 4.971 g of water was added thereto. The aerosol can was fitted with an aerosol valve, filled with 20.0 g of dimethyl ether, shaken, and then fitted with a total release actuator to obtain Reference Aerosol Formulation 5.

Comparative Production Example 1 29.0 mg of the present compound was dissolved in 1.75 g of xylol.
Deodorized kerosene (Isoper G, Exxon Chemical) was added to make a total of 3.75 g, and the solution was placed in a 50 ml aerosol can. After installing aerosol valve, 21.25g
After filling with liquefied petroleum gas and shaking, a total aerosol formulation 1 was obtained by mounting an actuator for total release.

Test Example 1 (Black Cockroach Efficacy Test) 5.8 m ³ (1.8 m in length, 1.8 m in width, 1.8 m in height)
The aerosol preparation 1 obtained in Production Example 1 was placed at the center of the floor of the test room. Two black cockroaches (Peri) in the test room
6 planeta fuliginosa (male 3)
Head, 3 females) in a plastic container (860m)
l) was installed. After spraying the whole amount of the aerosol preparation and exposing the test insects to the drug for 2 hours, all the test insects were transferred to a clean plastic container, and the mortality was examined 24 hours later.
By the same operation, the present aerosol preparation 2 obtained in Production Example 2
Lethality of black cockroach when spraying the reference aerosol preparations 1, 2, 3, 4, and 5 obtained in Reference Production Examples 1, 2, 3, 4, and 5, and the comparative aerosol preparation 1 obtained in Comparative Production Example 1. investigated. In the test, the present aerosol preparation 1, reference aerosol preparations 1, 2 and 5 were each repeated one time, and the aerosol preparation 2, reference aerosol preparations 3, 4 and comparative aerosol preparation 1 were each performed twice. Table 1 shows the results.

[0021]

[Table 1]

[0022]

EFFECTS OF THE INVENTION The composition of the present invention for an all-injection type aqueous pesticidal aerosol exhibits an excellent control effect on harmful pests.

Claims (3)

[Claims] (1) 1-methyl-2-nitro-3-
[(3-tetrahydrofuryl) methyl] guanidine,
(B) one polar solvent selected from the group consisting of benzyl alcohol and propylene carbonate, (c) water, and (d)
A total spray type insecticidal aqueous aerosol composition comprising a propellant containing 50% by weight or more of dimethyl ether based on the total weight of the propellant. 2. The method according to claim 1, wherein the polar solvent is benzyl alcohol.
2. A full spray insecticidal aqueous aerosol according to claim 1, wherein the weight ratio of -methyl-2-nitro-3-[(3-tetrahydrofuryl) methyl] guanidine to benzyl alcohol is in the range of 1: 4 to 1: 100. Composition. 3. The method according to claim 1, wherein the polar solvent is propylene carbonate, and 1-methyl-2-nitro-3-[(3-tetrahydrofuryl) is used.
Methyl] guanidine and propylene carbonate in a weight ratio of 1:
The composition according to claim 1, wherein the composition is in the range of 9 to 1: 100.