JPH03218301A - Improved pest controlling agent - Google Patents

Abstract

PURPOSE:To obtain an insecticidal, acaricidal and nematicidal agent having fast-acting property and residual activity by making an organic phosphorus-based and/or a carbamate-based drug hardly soluble in water to microcapsule together with dispersant and making a pyrethroid-based drug hardly soluble in water to floable drug in another way, then mixing the microcapsule and the floable drug. CONSTITUTION:An organic phosphorus-based insecticidal, acaricidal and nematicidal agent hardly soluble in water and/or a carbamate-based insecticidal and acaricidal agent hardly soluble in water is involved in a fine water-insoluble polymeric film together with dispersant (namely, microcapsulated). In another way, a pyrethroid-based insecticidal or acaricidal agent hardly soluble in water is emulsified or suspended in water together with the above-mentioned dispersant (namely, made to floable drug). Next, said microcapsules and floable drug are mixed in a suitable ratio to afford the objective insecticidal, acaricidal and nematicidal formulation having fast-acting property and residual activity. Said composition is a stable and useful composition exhibiting an excellent effect in both of initial effect and residual activity.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to insecticidal, acaricidal and nematicidal preparations that have immediate effect and residual effect.

<Prior Art> Insecticides, acaricides, and nematocides have traditionally been available in various forms in order to make them easier for users to use and to maximize the effectiveness of their active ingredients. It has been formulated and used. For example, emulsions, wettable powders, powders,
Representative examples include oil solutions, aqueous suspensions, aqueous emulsions, and microcapsules.

<Problems to be solved by the invention> For example, emulsions are widely used because they are relatively easy to manufacture and can be easily used by diluting them with water, but because they use organic solvents, they have problems such as toxicity and flammability. There are problems in terms of
In addition, in the case of active ingredients that are extremely difficult to dissolve in organic solvents,
It was virtually impossible to formulate it into an emulsion.

Wettable powders can be formulated even with active ingredients that are difficult to dissolve in organic solvents, and since organic solvents are not required, the problem of flammability is also resolved. There was a risk that it would scatter and be inhaled by the workers.

In addition, in recent years, flowable agents (aqueous suspensions, aqueous emulsions),
Microcapsules and the like have also been developed, but they are not necessarily sufficient in terms of simultaneously exhibiting immediate effect and residual effect.

<Means for Solving the Problems> As a result of intensive studies to solve these problems, the present inventors have developed a poorly water-soluble organophosphorus insecticide, acaricide, and nematocide and/or a poorly water-soluble organic phosphorus insecticide, acaricide, and nematocide. A carbamate-based insecticide/acaricide is encapsulated in a microscopic water-insoluble polymer film along with a dispersant,
By micro-capsulating and separately emulsifying or suspending a poorly water-soluble pyrethroid insecticide/acaricide in water with the above-mentioned dispersant to form a so-called flowable agent, and mixing these in an appropriate ratio, The present invention was completed based on the discovery that insecticidal, acaricidal, and nematicidal preparations having immediate and residual effects can be obtained.

That is, a poorly water-soluble organophosphorus insecticide/acaricide/nematicide (hereinafter referred to as the present organic phosphorus agent) and/or a poorly water-soluble carbamate-based insecticide/acaricide (hereinafter referred to as the present carbamate agent). A slightly water-soluble pyrethroid insecticide/acaricide (hereinafter referred to as the pyrethroid agent) is encapsulated in a water-insoluble polymer film together with a dispersant (hereinafter referred to as the microcapsule part), and the above-mentioned dispersant is added to water. , emulsion or suspension (hereinafter referred to as flowable part), and instant-acting and residual-acting insecticides, acaricides, and nematicides characterized by mixing these (hereinafter referred to as the composition of the present invention). ).

The present organic phosphorus agent, the present carbamate agent, or the present pyrethroid agent has a solubility in water of 10 at room temperature (approximately 25°C).
00 ppm or less is preferable.

The polymer coating that can be used in the present invention is not particularly limited as long as it is water-insoluble. To be elected. For example, polyamide polymers, polyurethane polymers, polyester polymers, polysulfonamide polymers, polyurea polymers,
Synthetic polymers such as epoxy polymers, polysulfonate polymers, polycarbonate polymers, urea/formaldehyde polymers, or gelatin, gum arabic, sodium alginate, etc., used alone or in combination to make them insoluble in water. Among them, polyurethane polymers and polyurea polymers are preferred.

Methods for incorporating the present organic phosphorus agent and/or the present carbamate agent into a water-insoluble polymer film include interfacial polymerization method, In
Conventional methods used for microencapsulation include the sou method, submerged drying method, and coacervation method.
Among these, the interfacial polymerization method or the In SitLl method is preferred.

Examples of dispersants used include polyvinyl alcohol, polyvinylpyrrolidone, polyoxyethylene, copolymers of ethylene oxide and propylene oxide, carboxylic acid polymers, and formalin condensates of naphthalenesulfonic acid and/or xylene sulfonic acid derivatives. or synthetic polymers such as the above salts, semi-synthetic polymers such as carboxymethylcellulose sodium salt, methylcellulose, lignin sulfonate, hydroxyethylcellulose, human oral bibil cellulose, hydroxybupil methylcellulose, natural substances such as gum arabic, gelatin, etc. One or more types of polymers can be selected and used. If the emulsion or suspension-dispersibility is weak, the emulsion or suspension-dispersibility can be improved by adding a known surfactant described in "Synthetic Surfactants" by Hiroshi Horiguchi. Is possible.

On the other hand, as a method for emulsifying or suspending the present pyrethroid agent in water, the present pyrethroid agent is added to a dispersing agent, and the resultant mixture is emulsified in microdroplets or suspended in microparticles. If necessary, the pyrethroid agent may be mixed with a hydrophobic solvent such as aromatic hydrocarbons such as alkylbenzenes, ester paraffins, naphthenes, and ketones.

When emulsifying or suspending the present pyrethroid agent, that is, when forming a flowable part, the same dispersant as mentioned above can be used. If the emulsion or suspension-dispersibility is weak, the emulsion or suspension-dispersibility can be improved by adding a known surfactant described in "Synthetic Surfactants" by Hiroshi Horiguchi. Is possible.

As a method for micronizing the present pyrethroid agent or a hydrophobic mixture of the present pyrethroid agent and a hydrophobic solvent, etc. in water, for example, if they are liquid, use a homogenizer.
Dispersion machines such as colloid mills and dispersers are used,
In the case of a solid, it is convenient to use a wet grinder such as a bead mill, sand mill, or colloid mill.

Further, when forming the microcapsule part and the flowable part, or after mixing the composition of the present invention, that is, the microcapsule part and the flowable part, a thickener may be added as necessary, such as xanthan gum, wax It is possible to use one or a mixture of two or more kinds of polymeric thickeners such as strength stopping gum, guar gum, carrageenan, alginic acid or its salts, gum tragacanth, and fine inorganic powders such as magnesium aluminum silicate, bentonite, and synthetic hydrated silicic acid. can.

Furthermore, if necessary, synergists such as piperonyl butoxide, stabilizers such as BHT, preservatives such as formalin, antifreeze agents such as propylene glycol and ethylene glycol, crystals such as phenylxylylethane, etc. It is also possible to add a precipitation inhibitor or the like.

Further, as a method of mixing the microcapsule part and the flowable part, the microcapsule part and the flowable part are prepared separately, and then mixed, and an aqueous solution consisting of the above-mentioned thickener etc. is added; i) The present organic phosphor agent and/or the present carbamate agent and microcapsules (polymer coating) are added to the aqueous solution containing the dispersant used in the formation and the dispersant used in the flowable part formation.
A solution containing a film material forming agent (monomer, etc.) is added, stirred until it becomes microdroplets, and if necessary, a corresponding film material forming agent (monomer, etc.) is added, and then this pyrethroid agent or this pyrethroid is added. Add a hydrophobic mixture of a hydrophobic agent and a hydrophobic solvent, etc., stir until it becomes fine droplets, and then
Microencapsulation is performed by an interfacial polymerization method such as heating and stirring at 80°C for 0.5 to 48 hours, or ii) hydrophobic treatment of the present pyrethroid agent or the present pyrethroid agent with a hydrophobic solvent, etc. Then, a solution containing the present organic phosphor agent and/or the present carbamate agent and a microcapsule film forming agent (monomer, etc.) was added and stirred until it became minute droplets. After that, add the corresponding film material forming agent (monomer, etc.) as necessary.
Microencapsulation is performed by an interfacial polymerization method such as heating and stirring at 40 to 80°C for 0.5 to 48 hours. Thereafter, there is a method of adding an aqueous solution containing the above-mentioned thickener or the like. Note that the aqueous solution containing the thickener and the like may be added to any of the previous steps as necessary.

The blending ratio of the microcapsule portion of the present invention and the flowable portion of the present invention is not particularly limited, as it varies depending on the type of active ingredient, type of target pest, target crop, treatment time, method, location, weather conditions, etc. but usually 1500:1 in weight%
1O:90.

When using the composition of the present invention, it is usually sprayed as is or after diluting with water if necessary.

Furthermore, when spraying, it is convenient and convenient to use a sprayer that is used for spraying ordinary emulsions and flowable agents. Furthermore, the composition of the present invention can also be used for so-called aerial spraying.

Examples of active ingredients that can be used in the present invention include the following.

<This organic phosphor> 0,0-dimethyl O-4-nitro-tolyl phosphorothioate [phenitrothion] 11 S- [1,2-bis(ethoxycarbonyl)ethyl]
0,0-Dimethyl phosphorodithioate [Marathon] 0,0-dimethyl O-(2-isobrobyl 6-methyl-4-pyrimidinyl) Phosphorothioate [Diazinon] 0- (3,5.6-}lichloro-2-pyridyl) 0
．． 0-Diethyl phosphorothioate [chlorbyrifos] 0-(2,2-dichlorovinyl) 0.0-dimethylphosphate [dichlorvos] 0,0-dimethyl 0-(3
-Methyl-4-methylthiophenyl) phosphorothioate [fenthion] S-(tert-butylthio)methyl 0,01 dimethyl phosphorodithioate [terbphos] 0,0-diethyl O-1-(N-methoxyimino)ethyl phosphorothioate 2 -Methoxy4H-1.3.2-penzodioxaphosphorine 2-sulfide [salithione] <This carbamate agent> 2-sec-butylphenyl N-methylcarbamate (B PMC) 3,4-dimethylphenyl N -Methyl carbamate
(MPMC) 3-methylphenyl N-methylcarbamay}
(MTMC) <This pyrethroid agent> (RS) -α-cyano-3-phenoxybenzyl (R
S)-2-(4-chlorophenyl)-3-methylbutyrate [fenvalerate] (S)-1α-cyano-3-phenoxybenzyl (S)-2-(4-chlorophenyl)-3-methylbutyrate [esfenvalerate] rate〕
(RS)-α-cyano-3-phenoxybenzyl 2.
2,3.3-tetramethylsicpropaneylpoxylate [fenpropathrin] 3-phenoxybenzyl
(IR)-cis,trans-chrysanthemate [d-phenothrin] (RS)-α-cyano-3-phenoxybenzyl (I
R) Monocis,trans-chrysanthemate [cyphenothrin] 3-Phenoxybenzyl (IRS) monocis,trans-3-(2,2-dichlorovinyl)2,2-dimethylcyclopropanecarboxylate [ Vermethrin] α-cyano-3-phenoxybenzyl (IR)-cis,trans-3-(2.2-dichlorovinyl)-2.2
-Dimethylcyclopropane lupoxylate [cypermethrin] α-cyano-3-phenoxybenzyl (lR)-cis,trans-3-(2.2-dibromovinyl)-2.2
-Dimethylcyclopropanecarboxylate [deltamethrin] 2-(4-ethoxyphenyl)-2-methylbrobyl
3-phenoxybenzyl ether [ethofenbrox] (S)-1α-cyano 3-phenoxybenzyl ether (IR.3S)-2,2-dimethyl-3 (1.2,
2.2-tetrabromoethyl) cyclopropanecarboxylate [tramethrin] 3,4,5.6-tetrahydrophthalimidomethyl (IRS) monocis, trans-chrysanthemate [tetramethrin] 3,4,5.6 -Tetrahydrophthalimidomethyl (
IR) -cis,trans-chrysanthemate [d-tetramethrin] (RS)-3-aryl-2-methyl-4-oxocycbento-2-enyl (IRS)cis,trans-chrysanthemate [allethrin] (RS )-3-aryl-2-methyl-4-oxo-bent-2-enyl (IR) cis,trans-chrysanthemate (d-allethrin) (S)-2-methyl-4-oxo3- (2- provinyl)cyclobent-2-enyl (lR) monocis,
Trans-chrysanthemate (Bl5 larethrin) (RS)-1-ethynyl-2-methyl-2pentenyl
(IR) monocis, trans-chrysanthemate [empensuline] 5-benzyl-3-furylmethyl (IRS) monocis,
trans-chrysanthemate [resmethrin] 5-benzyl-3-furylmethyl (IR) cis, trans-chrysanthemate [d-resmethrin] α-cyano, 3-phenoxybenzyl [lR, }-2. 2-dimethyl-3- (2-chloro-2-
trifluoromethylvinyl) cyclopropanecarboxylate [cyhalothrin] α-cyano 3-phenoxybenzyl 2-(2-chloro-4-trifluoromethylanilino)-isovalerate (fluvalinate) α-cyano 3-phenoxybenzyl l- (4-Ethoxyphenyl)-2,2-dichlorocyclobrobancarboxylate [cyclobrothrine] α-cyano 4-fluoro-3-phenoxybenzyl
[IR. }Lance]-2,2-dimethyl-3-(2.2
- dichlorovinyl) cyclopropane lupoxylate [
cyfluthrin] α-cyano-3-phenoxybenzyl 2-(4-difulmethoxyphenyl)isovalerate [flucysulinate] 2-methyl-3-phenylbenzyl [lR, trans]-2.2 -Dimethyl-3-(2-chloro-2-trifluoromethylvinyl)cyclopropanecarboxylate [bifenthrin] 2.3,5.6-tetrafluoro-
4-Methylbenzyl [IR. }Lance 1-2.2-dimethyl-3-(2-chloro-2-} IJ 7fluoromethylvinyl)cyclopropane hydroxylate [tefluthrin] The composition of the present invention is effective against harmful organisms such as It is valid. In other words, the house termite (Reticular termite)
Itermes speratus) and other isoptera,
German cockroach (Blattella german)
ica ), black cockroach (Periplaneta
fuliginosa), American cockroach (Peri
planeta americana), and Spodoptera (Spodoptera 1itur).
a) ,:ll Naga (Plutella xylost)
ella), cabbage butterfly (Pieris rep)
aecrucivora), Cnap
Halocrocis medinalis), fall armyworm (Pseudaletia separata)
, Spodoptera exigua
, E Touga ( Mamesrta brassic
ae) and other phosphoptera, the brown planthopper (Nilaparv
ata Lugens), Sejinka (Sogate
lla furcifera), Himetobi Chikara (La
odelphax striatellus), Nephotettix cinctic
eps) and other leafhoppers and stink bugs, Trialeurodes voporar
iorum), Hemiptera including aphids, Epilachina vigi, and Epilachina vigi.
ntioctopunctana) and other genus Henoseviracuna; cypress beetles including wood beetles, longhorn beetles, corn rootworms, weevils, scarab beetles, potato beetles, etc.; sawflies such as ants, wasps, wasps, sawflies, etc. Hymenoptera pests, including moles, grasshoppers, orthoptera, soil nematodes such as nematodes, cyst nematodes, cat nematodes, spider mites, ticks, Culex mosquitoes, Aedes mosquitoes, They are pests in the fields of agriculture, forestry, and epidemic prevention, including Diptera pests such as Anopheles, midges, houseflies, blowflies, blackflies, blackflies, black flies, horseflies, blackflies, and stable flies.

<Examples> Next, the present invention will be explained in more detail by giving Examples, Comparative Examples, and Test Examples.

Example 1 3.5 g of an adduct of toluene diisocyanate and trimethylol-19-propane (trade name Sumidur L■, manufactured by Sumitomo Bayer Urethane Co., Ltd.) was added to 200 g of fenitrothion, stirred until a homogeneous solution was obtained, and this was mixed with 5 wt. Aqueous solution 3 containing % gum arabic as a dispersant
50g of T.O. at room temperature (approximately 25°C) until it becomes minute droplets. K. Using an autohomogen mixer (manufactured by Tokushu Kika Kogyo Co., Ltd.), the mixture was stirred for several minutes at a rotational speed of 560 rpm. Next, 6 g of ethylene glycol was added dropwise, and the temperature was increased to 60°C.
The mixture was allowed to react for 24 hours with gentle stirring at a temperature of 100 to obtain a dispersion (A) of fenitrothion microcapsules covered with a polyurethane film. Also, fenbropathrin 4
0g of phenylxylylethane was added to 80g of phenylxylylethane, stirred until a homogeneous solution was obtained, added to 350g of an aqueous solution containing 5% by weight of gum arabic as a dispersant, and stirred at room temperature until it became minute droplets. K. Using an autohomogen mixer (same as above), the mixture was stirred at a rotational speed of 700 rpm for several minutes to obtain a fenbropathrin dispersion (B). Dispersion <A)
559.5 g and 470 g of dispersion (B) were mixed with an aqueous thickener solution containing 0.4% by weight of xanthan gum and 0.8% by weight of aluminum magnesium silicate to give a total weight of 2000 g, and 20% by weight of fenitrothion IO and fen The present composition containing 2% by weight of bropathrin (
1) was obtained.

Comparative Example 1 3.5 g of an adduct of toluene diisocyanate and trimethylolpropane (same as above) was added to 200 g of fenitrothion, stirred until a homogeneous solution was obtained, and this was mixed into an aqueous solution 350 containing 5% by weight of gum arabic as a dispersant.
g and T.g. at room temperature until it becomes minute droplets. K. Using an autohomogen mixer (same as above), the rotation speed was 560 Orr.
Stir for several minutes at pm. Then, 6 g of ethylene glycol was added dropwise and reacted at a temperature of 60° C. with gentle stirring for 24 hours to obtain a dispersion of fenitrothion microcapsules covered with a polyurethane film. This dispersion 559. 5 g was mixed with an aqueous thickener solution containing 0.4% by weight of xanthan gum and 0.8% by weight of aluminum magnesium silicate to give a total weight of 2000 g, and a comparative composition (11) containing 10% by weight of fenitrothion was mixed. Obtained.

Comparative Example 2 40 g of fenbropathrin was mixed with 8 g of phenylxylylethane.
This was added to 350 g of an aqueous solution containing 5% by weight of gum arabic as a dispersant, and the T. K. Using an autohomogen mixer (same as above), rotation speed 700 rpm
The mixture was stirred for several minutes to obtain a dispersion of fenbrobutrin. 470 g of this dispersion was mixed with an aqueous thickener solution containing 0.4% by weight of xanthan gum and 0.8% by weight of aluminum magnesium silicate to give a total weight of 2000 g.
A comparative composition (2) containing 2% by weight of fenbropathrin was obtained.

Example 2 1.5 g of an adduct of toluene diisocyanate and trimethylolpropane (same as above) was added to 200 g of ditrothion, stirred until a homogeneous solution was obtained, and 5% by weight of gum arabic was added as a dispersant. Aqueous solution containing 350
g and T.g. at room temperature until it becomes minute droplets. K. Using an autohomogen mixer (same as above), rotation speed 5600r
Stir for several minutes at pm. Then, 6 g of ethylene glycol was added dropwise and reacted at a temperature of 60° C. for 24 hours with gentle stirring to obtain a dispersion (C) of fenitrothion microcapsules covered with a polyurethane film. Additionally, 200 g of phenpropathrin was added to 200 g of phenylxylylethane, stirred until a homogeneous solution was obtained, and this
Aqueous solution containing 500% by weight of gum arabic as a dispersant
g and T.g. at room temperature until it becomes minute droplets. K. Using an autohomogen mixer (same as above), rotation speed 8000r
pm for several minutes to dissolve the fenpropathrin dispersion (
D) was obtained. Dispersion liquid (C) 557.5g and dispersion liquid (D
) was mixed with an aqueous thickener solution containing 0.4% by weight of xanthan gum and 0.8% by weight of aluminum magnesium silicate to give a total weight of 2000 g, which contained 10% by weight of fenitrothione and 10% by weight of phenipropathrin. This composition 23 (2) was obtained.

Comparative Example 3 1.5 g of an adduct of toluene diisocyanate and trimethylolpropane (same as above) was added to 200 g of fluorinated ditrothion and stirred until a homogeneous solution was obtained, which contained 5% by weight of gum arabic as a dispersant. Aqueous solution 350
g and T.g. at room temperature until it becomes minute droplets. ．． K. Using an autohomogen mixer (same as above), rotation speed 560O
Stir for several minutes at rpm. Then, 6 g of ethylene glycol was added dropwise and reacted at a temperature of 60° C. with gentle stirring for 24 hours to obtain a dispersion of fenitrothion microcapsules covered with a polyurethane film. This dispersion liquid 557. 5 g was mixed with an aqueous thickener solution containing 0.4% by weight of xanthan gum and 0.8% by weight of aluminum magnesium silicate to give a total weight of 2000 g,
A comparative composition (3) containing 10% by weight of fenitrothion was obtained.

Comparative Example 4 200 g of phenbropathrin was added to 200 g of phenylxylyethane and stirred until a uniform solution was obtained.
This was added to 500 g of an aqueous solution containing 5% by weight of gum arabic as a dispersant, and T. K
．． Using an autohomogen mixer (same as above), rotate at 8 rpm.
The mixture was stirred at 0.000 rpm for several minutes to obtain a dispersion of fenbropathrin.

900 g of this dispersion was mixed with an aqueous thickener solution containing 0.4% by weight of xanthan gum and 0.8% by weight of aluminum magnesium silicate to give a total weight of 2000 g;
Comparative composition (4) containing 10% by weight of fenbrobatrin
I got it.

Example 3 Adduct of toluene diisocyanate and trimethylolpropane (same as above) llg to fenitrothion 2
This was added to 350 g of an aqueous solution containing 5% by weight gum arabic as a dispersant, and the T.O. K. Using an autohomogen mixer (same as above), rotation speed 560 rpm
The mixture was stirred for several minutes. Then, ethylene glycol 6.
2 g was added dropwise and reacted for 24 hours with gentle stirring at a temperature of 60° C. to obtain a dispersion (E) of fenitrothion microcapsules covered with a polyurethane film. In addition, a homogeneous mixture of 2.5 g of methrin and 6.4 g of Solvesso 100 (manufactured by Exxon Chemical Co., Ltd.) was mixed with an aqueous solution 191.1 containing 5% by weight of gum arabic as a dispersant.
1 g of T.O. at room temperature until it becomes minute droplets. K. Using an autohomogen mixer (same as above), rotate at 800 rpm.
Stir for several minutes at
) was obtained. Dispersion liquid (E) 567.2 g and dispersion liquid (
F) 20g was mixed with an aqueous thickener solution containing 0.4% by weight of xanthan gum and 0.8% by weight of aluminum magnesium silicate to give a total weight of 1000g, and 20% by weight of fluorinated ditrothion and 0.025% by weight of methrin. This composition (3) containing % was obtained.

Comparative Example 5 Adduct of toluene diisocyanate and trimethylolpropane (same as above)
This was added to 350 g of an aqueous solution containing 5% by weight gum arabic as a dispersant, and the T.O. K. Using an autohomogen mixer (same as above), rotation speed 560 rpm
The mixture was stirred for several minutes. Then, ethylene glycol 6.
2 g was added dropwise and reacted at a temperature of 60°C for 24 hours with gentle stirring to obtain a dispersion of fenitrothion microcapsules covered with a polyurethane film. 567.2 g of this dispersion was mixed with an aqueous thickener solution containing 0.4% by weight of xanthan gum and 0.8% by weight of aluminum magnesium silicate to give a total weight of tooog. ) was obtained.

Comparative Example 6 A homogeneous mixture of 2.5 g of methrin and 6.4 g of Sorbetso 100 (same as above) was prepared in an aqueous solution containing 5% by weight of gum arabic as a dispersant. 1g of T.I. K. Using an autohomogen mixer (same as above), the mixture was stirred at a rotational speed of 800 rpm for several minutes to obtain a dispersion of Toraguchi Methrin 27. Add 20g of this dispersion to 0.4 xanthan gum.
% by weight, mixed with an aqueous thickener solution containing 0.8% by weight of aluminum magnesium silicate, and the total weight was reduced to 1000% by weight.
g, and tiger mouth methrin 0. A comparative composition (6) containing 0.025% by weight was obtained.

Example 4 Adduct of toluene diisocyanate and trimethylolpropane (same as above) llg to fenitrothion 2
This was added to 350 g of an aqueous solution containing 5% by weight gum arabic as a dispersant, and the T.O. K. Using an autohomogen mixer (same as above), rotation speed 560 rpm
The mixture was stirred for several minutes. Then, ethylene glycol 6.
2 g was added dropwise and reacted at a temperature of 60°C for 24 hours with gentle stirring to obtain a dispersion (G) of fenitrothion microcapsules covered with a polyurethane film. Also, 2.5 g of vermethrin and 2.5 g of phenylxylylethane.
A homogeneous mixture of 1.5 g of gum arabic was added to 195 g of an aqueous solution containing 5% by weight of gum arabic as a dispersant, and the T. K
．． Using an autohomogen mixer (same as above), rotate at 8 rpm.
Stir for several minutes at 00 rpm to dissolve the vermethrin dispersion (
H) was obtained. Dispersion liquid (G) 567.2 g and dispersion liquid (
H) Mix 100 g with an aqueous thickener solution containing 0.4% by weight of xanthan gum and 0.8% by weight of aluminum magnesium silicate to give a total weight of 1000 g, containing 20% by weight of fenitrothion and 0.125% by weight of vermethrin. Composition (4) was obtained.

Comparative Example 7 2.5 g of vermethrin and 2.5 g of phenylxylylethane
A homogeneous mixture of 1.5 g of T. g. K. Using an autohomogen mixer (same as above), the mixture was stirred at a rotational speed of 800 rpm for several minutes to obtain a vermethrin dispersion.

100 g of this dispersion was mixed with an aqueous thickener solution containing 0.4% by weight of xanthan gum and 0.8% by weight of aluminum magnesium silicate, and the total weight was determined as follows. 000g,
Comparative composition containing 0.125% by weight of vermethrin (7
) was obtained.

Example 5 Adduct of toluene diisocyanate and trimethylolpropane (same as above) llg to fenitrothion 2
This was added to 350 g of an aqueous solution containing 5% by weight gum arabic as a dispersant, and the T.O. K Using an autohomogen mixer (same as above), rotation speed 560Or
Stir for several minutes at pm. Then, 6.2 g of ethylene glycol was added dropwise, and the mixture was reacted with gentle stirring at a temperature of 60° C. for 24 hours to obtain a dispersion (1) of fenitrothion microcapsules covered with a polyurethane film.

Further, a homogeneous mixture of 50 g of saifenothrin and 50 g of phenylxylylethane was added to 350 g of an aqueous solution containing 5% by weight of gum arabic as a dispersant, and T. K. Autohomogen mixer (same as above)
The mixture was stirred for several minutes at a rotational speed of 800 rpm to obtain a cyphenothrin dispersion (J). Dispersion (1) 567
．． 2 g and 450 g of dispersion (J) were mixed with 0.2 g of xanthan gum.
6% by weight, aluminum magnesium silicate 1.2
Mix with a thickener aqueous solution containing % by weight to bring the total weight to 200%.
The present composition (5) containing 10% by weight of fenitrothion and 2.5% by weight of cyphenothrin was obtained.

Comparative Example 8 50g of saifenosurin and 50g of phenylxylylethane
A homogeneous mixture of 1.5 g of T. g. K. Using an autohomogen mixer (same as above), the mixture was stirred at a rotational speed of 800 rpm for several minutes to obtain a cyphenothrin dispersion. 450 g of this dispersion was mixed with an aqueous thickener solution containing 0.6% by weight of xanthan gum and 1.2% by weight of aluminum magnesium silicate to give a total weight of 2000 g, and a comparative composition containing 2.5% by weight of cyphenothrin ( 8) was obtained.

Comparative Example 9 3 liters of adduct of toluene diisocyanate and trimethylolpropane (same as above) was added to 20 liters of fenitrothion.
This was added to 350 g of an aqueous solution containing 5% by weight gum arabic as a dispersant, and the T. K. Using an autohomogen mixer (same as above), the mixture was stirred for several minutes at a rotational speed of 560 rpm. Then, ethylene glycol 6.2
g was added dropwise and allowed to react at a temperature of 60°C for 24 hours with gentle stirring to obtain a dispersion of fenitrothion microcapsules covered with a polyurethane film. Dispersion liquid 567
．． 2 g was mixed with an aqueous thickener solution containing 0.6% by weight of xanthan gum and 1.2% by weight of aluminum magnesium silicate to give a total weight of 2000 g to obtain a comparative composition (9) containing IO% by weight of fenitrotin. Ta.

Example 6 The same operation as in Example 5 was carried out except that esfuenvalerate was used instead of cyphenothrin, and the present composition (6) containing 10% by weight of fenitrothion and 2.5% by weight of esfuenvalerate was prepared. Obtained.

Example 7 The same operation as in Example 6 was carried out except that 100 g of d-phenothrin was used instead of 50 g of esfenvalerate and 50 g of phenylxylylethane, and the present composition containing 10% by weight of fenitrothion and 5% by weight of d-phenothrin was prepared. Product (7) was obtained.

Example 8 A composition (8) containing 10% by weight of fenitrothion and 2% by weight of cyphenothrin was obtained by carrying out the same operation as in Example 1, except that cyphenothrin was used instead of fenbropathrin.

Example 9 Self-condensate of hexamethylene diisocyanate (trade name Sumidur NO, manufactured by Sumitomo Bayer Urethane Co., Ltd.)
Add 6g to 200g of Marathon, stir until it becomes a homogeneous solution, add this to 350g of an aqueous solution containing 10% by weight of polyvinyl alcohol as a dispersant, and stir at room temperature until it becomes fine droplets. K. Autohomogen mixer (same as above)
The mixture was stirred for several minutes at a rotational speed of 400 rpm.

Then, the mixture was reacted at a temperature of 60° C. for 24 hours with gentle stirring to obtain a dispersion (K) of marathon microcapsules covered with a polyurea membrane. Also, Sibermethrin 40
g was added to 40 g of phenylxylylethane, stirred until it became a homogeneous solution, added to 350 g of an aqueous solution containing 10% by weight of polyvinyl alcohol as a dispersant, and stirred at room temperature until it became minute droplets. K. Using an autohomogen mixer (same as described above), the mixture was stirred at a rotation speed of 700 rpm for several minutes to obtain a cypermethrin dispersion (L). Dispersion (
556 g of K) and 430 g of dispersion (L) were mixed with an aqueous thickener solution containing 0.4% by weight of xanthan gum and 0.8% by weight of aluminum magnesium silicate to give a total weight of 2000 g, and 556 g of dispersion (L) were mixed with an aqueous thickener solution containing 0.4% by weight of xanthan gum and 0.8% by weight of aluminum magnesium silicate to give a total weight of 2000 g, and 556 g of dispersion (L) were mixed with 0.4% by weight of xanthan gum and 0.8% by weight of aluminum magnesium silicate to give a total weight of 2000 g. This composition (9) containing 2% by weight was obtained.

Example IO 3.5 g of an adduct of toluene diisocyanate and trimethylolpropane (same as above) was added to 200 g of fenitrothion and stirred until a homogeneous solution was obtained.
g and T.g. at room temperature until it becomes minute droplets. K. Using an autohomogen mixer (same as above), rotation speed 560 Orp.
The mixture was stirred for several minutes at m. A homogeneous solution of 40 g of phenprobatrin and 80 g of phenylxylylethane was added to the dispersion. K. Using an autohomogen mixer (same as above), the mixture was stirred for several minutes at a rotational speed of 700 rpm.

The mixture was then reacted with gentle stirring for 24 hours at a temperature of 60°C, and then mixed with an aqueous thickener solution containing 0.4% by weight of xanthan gum and 0.8% by weight of aluminum magnesium silicate to give a total weight of 2000 g. , the present composition α0) containing 10% by weight of fenitrothion and 2% by weight of fenpropathrin was obtained.

Example 11 A homogeneous solution of 40 g of fenbropathrin and 80 g of phenylxylylethane was added to 700 g of an aqueous solution containing 5% by weight Arabi35 agam as a dispersant, and T.I. K. Autohomogen mixer (
The mixture was stirred for several minutes at a rotational speed of 7000 rpm using the same method as described above. Then, a homogeneous solution of 3.5 g of an adduct of toluene diisocyanate and trimethylolpropane (same as above) and 200 g of fenitrothion was added to the dispersion, and T.I. K. Using an autohomogen mixer (same as above), rotation speed 560 rpm
The mixture was stirred for several minutes. Next, 6 g of ethylenediamine was added dropwise and reacted with gentle stirring at a temperature of 60°C for 24 hours, followed by mixing with an aqueous thickener solution containing 0.4% by weight of xanthan gum and 0.8% by weight of aluminum magnesium silicate. The total weight was 2000 g, and the present composition 0υ containing 10% by weight of fenitrothion covered with a polyurea membrane and 2% by weight of fenbropathrin was obtained.

Example 12 The same procedure as in Example 1 was carried out except that BPMC was used instead of fenitrothion in Example 1 to obtain the present composition α2 containing 36% by weight of BPMCIO and 2% by weight of fenbropatrin.

Example 13 The same procedure as in Example 1 was carried out except that instead of 200 g of fenitrothion, a mixture of 150 g of fenitrothion and 50 g of BPMC was used, and 7.5% by weight of fenitrothion, 2.5% by weight of BPMC, and fenbropathrin were added. This composition a3 containing 2% by weight was obtained.

Test Example 1 Present composition (1), comparative composition 1 and comparative composition (2)
500 of each special Rino (manufactured by Nihon Nohyaku Co., Ltd.)
It was diluted 400 times with a 0 times diluted solution with water, and sprayed 20 times per pot on potted Citrus lanterns using a spray gun. After air-drying, one leaf of Citrus orchid was cut out and placed in a cup with a diameter of 9 ann along with 10 heads of Spodoptera spp., and the insect behavior was immediately observed to determine the insect mortality rate. The results are shown in Table 1. In addition, one separately treated Citrus orchid leaf was cut off every predetermined number of days and placed in a cup with a diameter of 9 AO along with lθ heads of Spodoptera spp., and the rate of bitter insect death after 2 days was investigated. The results are shown in Table 2.

Table 1 Table 2 Test Example 2 Composition (2), Comparative Composition (3) and Comparative Composition (
4) was diluted 4,000 times with a 5,000 times diluted water solution of special Rino (same as above) and sprayed on rice plants planted in pots in an amount of 30 ml per two pots using a spray gun.

After air-drying, cut one rice leaf and place it in a cup with a diameter of 9cm.
I put it in with 0 brown planthoppers and immediately checked the number of agonizing insects. In addition, the mortality rate of insects after 48 hours was also examined at the same time. The results are shown in Tables 3 and 4.

Table 3 3 9 Table 4 Test Example 3 Filter paper was placed in a Petri dish with a diameter of 9 cm, and 50 Termite worker ants were placed in it. Moreover, from 60 cm above, this composition (3
) was sprayed 6 times a 12.5 times diluted solution with water. Immediately thereafter, 20 treated insects were placed in a 9 cm diameter petri dish lined with moist filter paper, the number of writhing insects was investigated, and the time required for half of them to writhe (K
Ts. ) was sought.

Comparative composition (5) and comparative composition (6) were also tested in the same manner as this composition (3). The results are shown in Table 5.

4 0 Table 5 Test Example 4 10g of soil moistened with water in a Petri dish with a diameter of 9cm
20 cm of this composition (3) from a height of 60 cm.
6 ml of the 0x diluted solution was sprayed, 20 termite worker ants were placed there, and the mortality rate was determined after 24 hours had elapsed.

Present composition (4), comparative composition (5), comparative composition (6)
A similar test was also conducted on Comparative Composition (7). The results are shown in Table 6.

Table 6 Test Example 5 A 40-fold diluted solution of the present composition (5) in water was applied to a plywood board (15c
A spray gun was used to treat the surface (mxl5cm) at a depth of 50mlrd from 60cm above, and the mixture was air-dried for 24 hours.

Adult German cockroaches (5 males and 5 females) were released onto the treated surface, kept in contact for 2 hours, and knockdown was observed. The test insects were collected after 2 hours, fed with water and food, and observed for mortality after 70 hours. Comparative compositions (8) and (9) were also subjected to similar tests to compare their effects.
Composition 5) exhibited superior knockdown performance and residual efficacy compared to comparative compositions (8) and (9).

Comparative Example 1O The same operation as in Example 1 was carried out to obtain a dispersion (A) of fenitrothion microcapsules covered with a polyurethane film. Additionally, 40 g of fenbropathrin was added to 80 g of phenylxylylethane, stirred until a uniform solution was obtained, and this was added to 350 g of an aqueous solution containing 5% by weight of polyoxyethylene (20) sorbitan trioleate as a dispersant at room temperature. T until it becomes a microdroplet below. K. Using an autohomogen mixer (same as described above), the mixture was stirred at a rotation speed of 700 rpm for several minutes to obtain a dispersion liquid (M) of fenbropathrin. Dispersion liquid (A) 559.5g and dispersion liquid (M)
A comparative composition containing 10% by weight of fenitrothion and 2% by weight of fenbropatrin was obtained by mixing 470 g with water to give a total weight of 2000 g.

Comparative Example 1l The same operation as in Example 1 was carried out to obtain a dispersion (A) of fenitrothion microcapsules covered with a polyurethane film. Also, Fuenpropathrin 40g 1 Solbol ■ 30
50 g of 05X (a surfactant manufactured by Toho Chemical Co., Ltd.) and 410 g of xylene were mixed to prepare an 8% by weight emulsion of fenbropathrin (A). Dispersion liquid (A) 55
A comparative composition αυ containing 10% by weight of fenitrothion and 2% by weight of fenbropathrin was obtained by mixing 9.5 g of emulsion (A) and 470 g of emulsion (A) with water to give a total weight of 2000 g.

Comparative Example 12 43 The same operation as in Example 1 was carried out to obtain a dispersion (A) of fenitrothion microcapsules covered with a polyurethane film. In addition, Sorbol e506
0 (Dispersant manufactured by Toho Chemical Co., Ltd.) 20g, Demol ■
10 g of SNB (a dispersant manufactured by Kao Corporation), 100 g of synthetic hydrous silicic acid, and 250 g of diatomaceous earth were mixed in a juice mixer to obtain a permanent agent (A) containing 8% by weight of fenbropatrin. Comparative composition containing 559.5 g of dispersion (A) and 8% by weight of fenpropathrin Wettable powder (A) 500 g with water to give a total weight of 2000 g and containing 10% by weight of fenitrothion and 2% by weight of fenpropathrin I got item 02.

Test Example 6 80 g of the present composition (1), comparative composition (10), 0υ and α4 were each sealed in 100 glass ampoules and stored at room temperature.

For comparative compositions α0), aυ, and 02, separation and sedimentation of dispersed particles were observed after one day of storage, but 44 the present composition (1) remained stable even after one month, and separation of dispersed particles was observed. , there was no sedimentation.

<Effects of the Invention> The composition of the present invention is thus a stable and useful composition that exhibits excellent initial effects and excellent residual effects.

Claims (4)

[Claims] (1) A poorly water-soluble organophosphorus insecticide, acaricide, or nematocide [and/or a poorly water-soluble carbamate insecticide/acaricide is encapsulated in a water-insoluble polymer film together with a dispersant, and a poorly water-soluble pyrethroid Instant-acting and residual-acting insecticides, acaricides, and acaricides that are characterized by emulsifying or suspending insecticides and acaricides in water with the above-mentioned dispersants and mixing them.
Nematicidal preparation. (2) The insecticidal, acaricidal, and nematicidal formulation according to claim 1, further comprising a thickener. (3) The dispersant is one or more of the following synthetic polymers [polyvinyl alcohol, polyvinylpyrrolidone, polyoxyethylene, copolymer of ethylene oxide and propylene oxide, carboxylic acid polymer, naphthalene sulfonic acid and/or xylene sulfone] Formalin condensate of acid derivative or its salt] and/or one or more of the following semi-synthetic polymers [carboxymethylcellulose sodium salt, methylcellulose, lignin sulfonate, hydroxyethylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose] and/or the following The insecticidal, acaricidal, and nematicidal preparation according to claim 1, wherein at least one of the natural polymers is gum arabic and gelatin. (4) The thickener is one or more of the following polymeric thickeners <xanthan gum, locust bean gum, guar gum, carrageenan, alginic acid or its salts, tragacanth gum> and/or one or more of the following inorganic fine powders [magnesium aluminum The insecticidal, acaricidal, and nematicidal preparation according to claim 2, which is a silicate, bennite, synthetic hydrated silicic acid.