JP7267375B2 - Aqueous suspension pesticide composition - Google Patents

Description

The present invention relates to an aqueous suspension pesticide composition containing an agrochemical active ingredient with low water solubility. More particularly, the present invention relates to an aqueous pesticide suspension composition in which particle growth of active ingredients is suppressed even in storage conditions after production.

Conventionally, pesticide formulations were mainly powders, wettable powders, emulsions, aqueous solutions, granules, and the like. Among these formulations, powders and wettable powders may cause health problems for workers due to dusting of solid drugs during manufacturing and application. It is pointed out that there is a problem with the load on the solvent and the risk of fire due to the flammable solvent. Therefore, in recent years, aqueous suspension compositions and granular wettable powders, which are free from such problems, have become the main new formulations.

Aqueous suspension compositions do not dust during handling, are easy to measure, and are less likely to catch fire due to flammable solvents, and are particularly excellent in terms of safety and the environment. However, since an aqueous suspension composition has an agrochemically active ingredient dispersed/suspended in water by a surfactant and a thickener, existing aqueous suspension compositions, when stored after production, There is a problem that the particles of the agricultural chemical active ingredient tend to grow and become large in diameter, or that the agricultural chemical active ingredient tends to settle and form a solidified layer that is difficult to redisperse. In particular, aqueous suspension compositions with increased particle size may result in significant reduction in biological efficacy.

The composition closest to the present invention, which is known to reduce grain growth under storage conditions after manufacture, contains a specific sulfonylurea herbicidally active compound, a carboxymethylcellulose salt, a lignin sulfonate, a surfactant, and water. and an aqueous suspension herbicidal composition (excluding an aqueous suspension herbicidal composition containing an active ingredient amount of pyraclonil) (Patent Document 1).

JP 2008-069142 A

However, in the method of Patent Document 1, there is no evaluation of wettability of the diluent to plants when particle growth cannot be sufficiently suppressed depending on the type of pesticidal active ingredient and storage conditions, and although particle growth is suppressed. In some cases, the evaluated wettability was not sufficient. In addition, existing formulations are unsatisfactory, especially when a surfactant that lowers the surface tension is added in order to increase the wettability of the diluent to the plant, as the particles tend to grow larger.

SUMMARY OF THE INVENTION An object of the present invention is to provide an aqueous pesticidal pesticide composition in which the diluted solution has high wettability to plants and little particle growth after storage.

As a result of extensive studies to solve the above problems, the inventors found that by combining a solid pesticidal active ingredient with a water solubility of 100 ppm or less at 20 ° C. and a specific surfactant, there is little particle growth even after storage. The inventors have found that and completed the present invention.

That is, the present invention
[1] A solid pesticidal active ingredient having a water solubility of 100 ppm or less at 20°C;
a surfactant selected from the group consisting of polyoxyalkylene alkylphenyl ethers, polyoxyalkylene arylphenyl ethers, sorbitan fatty acid esters, polyoxyalkylene fatty acid esters, polyoxyalkylene sorbitan fatty acid esters and polyoxyalkylene vegetable oils and salts thereof; at least one; and an alkylnaphthalene sulfonate or a condensate thereof.
[2] The composition of [1], wherein the surfactant is a polyoxyalkylene arylphenyl ether or a salt thereof;
[3] The composition of [1] or [2], wherein the surfactant is polyoxyethylene tristyrylphenyl ether or a salt thereof;
[4] The composition according to any one of [1] to [3], wherein the surfactant is polyoxyethylene tristyrylphenyl ether sulfate, particularly polyoxyethylene tristyrylphenyl ether sulfate ammonium salt;
[5] The composition according to any one of [1] to [4], wherein the alkylnaphthalenesulfonate or condensate thereof is a monoalkylnaphthalenesulfonate or dialkylnaphthalenesulfonate or a condensate thereof;
[6] Alkylnaphthalenesulfonates or condensates thereof are methylnaphthalenesulfonates, ethylnaphthalenesulfonates, propylnaphthalenesulfonates, isopropylnaphthalenesulfonates, butylnaphthalenesulfonates or isobutylnaphthalenesulfonates, dimethylnaphthalenesulfonate, diethylnaphthalenesulfonate, diisopropylnaphthalenesulfonate, dibutylnaphthalenesulfonate, diisobutylnaphthalenesulfonate, methylnonylnaphthalenesulfonate, or condensates thereof, [1] to [5] ] The composition according to any one of
[7] The composition according to any one of [1] to [6], wherein the alkylnaphthalenesulfonate or condensate thereof is an alkylnaphthalenesulfonate sodium salt formalin condensate;
[8] The pesticidal active ingredient is one or more selected from brofuranilide, 3-(4,4-difluoro-3,3-dimethyl-3,4-dihydroisoquinolin-1-yl)quinoline and simeconazole and salts thereof The aqueous suspension pesticide composition according to any one of [1] to [7],
[9] The aqueous pesticide suspension according to any one of [1] to [8], wherein the pesticidal active ingredient is 0.05 to 50 parts by weight per 100 parts by weight of the aqueous pesticide suspension composition. Composition,
[10] The aqueous pesticide suspension according to any one of [1] to [9], wherein the surfactant is 0.05 to 10 parts by weight with respect to 100 parts by weight of the aqueous pesticide suspension composition. Composition,
[11] Any one of [1] to [10], wherein the alkylnaphthalenesulfonate or condensate thereof is 0.05 to 20 parts by weight with respect to 100 parts by weight of the aqueous suspension pesticide composition. an aqueous suspension pesticide composition of
[12] Agriculture and horticulture according to any one of [1] to [11], wherein a 0.05% by weight aqueous dilution of the aqueous pesticide suspension has a surface tension of 50 to 70 mN/m at 20°C. and [13] The agricultural and horticultural hydration according to [12], wherein the surface tension of a 0.05% by weight water dilution of the aqueous pesticide suspension at 20°C is 55 to 65 mN/m. Regarding the use of agents.

The aqueous pesticidal suspension composition of the present invention is expected to exhibit good biological effects because it inhibits particle growth even after storage and has high wettability to plants.

The agricultural chemical active ingredient in the aqueous suspension agricultural chemical composition of the present invention has biocidal activity and is used for agriculture and horticulture, and is a solid agricultural chemical active ingredient with a water solubility of 100 ppm or less at 20°C. Any pesticidally active ingredient, if any, can be used.
The water solubility at 20° C. is preferably 80 ppm or less, particularly 60 ppm or less, in order to obtain excellent particle growth suppression after storage, wettability to plants, and biological effects. There is no particular lower limit for the water solubility at 20° C., but it may be, for example, 0.01 ppm or more.
Specific examples of agricultural chemical active ingredients include insecticides, fungicides, herbicides, and the like.

Insecticides include, for example, Chromafenozide, Pyrimidifen, Milbemectin, Lepimectin, Brofuranilide, Indoxacarb, Ethiprole, Carbaryl, Chlorantraniliprole, Chlorfenapyr, Chlorfluazuron, Diafenthiuron, Cyantraniliprole, Diflubenzuron, Tebufenozide, tebufenozide, teflubenzuron, tolfenpyrad, fenpyroximate, buprofezin, furatiocarb, flufenoxuron, flubendiamide, hexaflumuron, benzoepine, metaflumizone or lufenuron, or salts thereof, and the like.

Bactericides include, for example, simeconazole, tolprocarb, fursulfamide, penthiopyrad, 3-(4,4-difluoro-3,3-dimethyl-3,4-dihydroisoquinolin-1-yl)quinoline, azoxystrobin, orysastrobin, carpropamide, captan, cyazofamid, diclosimet, diclomedine, dithianone, thiazinyl, thifluzamide, famoxadone, fthalide, fluorimide, flutolanil, procymidone, pencycuron, or salts thereof.

Herbicides include, for example, pyrazolate, cyclopyrimonate, oxadiclomefone, caffenstrol, quizalofop-ethyl, cumyluron, clomeprop, daimuron, thenylchlor, bifenox, pyraclonil, pyrazoxifen, pyriftalide, piributicarb, pyrazosulfuron-ethyl, pyraflufen-ethyl , phenoxasulfone, fentrazamide, phenmedifam, flumioxazin, prodiamine, propyrisulfuron, bromobutide, bensulfuron-methyl, benzofenap, benzobicirone, pentoxazone or mefenacet.

Brofuranilide, 3-(4,4-difluoro-3,3-dimethyl-3,4-dihydroisoquinolin-1-yl)quinoline, simeconazole, and the like are preferred as the agricultural chemical active ingredient used in the present invention.

The pesticide active ingredient used in the present invention may be used alone, but is not limited to one type, and may be used in combination of two or more types. Or a combination of herbicides can be used.

Furthermore, for example, the solubility in water at 20 ° C. is 100 ppm or less, which is described in literature such as "Pesticide Handbook 2011 Edition" (Japan Plant Protection Association) and "The Pesticide Manual sixteenth edition" (British Crop Production Council). can also be used as an agrochemical active ingredient of the present invention. These pesticidal active ingredients can be used alone or in combination of two or more.

The content of the pesticide active ingredient in the aqueous pesticide suspension composition of the present invention can be appropriately selected and determined depending on the physical properties of the active ingredient, the application scene, etc. However, the aqueous suspension pesticide composition 100 It is usually 0.05 to 50 parts by weight, preferably 0.1 to 40 parts by weight, and more preferably 1 to 20 parts by weight.

Surfactants (hereinafter referred to as "surfactants of the present invention") in the aqueous suspension pesticide composition of the present invention include polyoxyalkylene alkylphenyl ethers, polyoxyalkylene arylphenyl ethers, sorbitan fatty acid esters, and polyoxyalkylene fatty acid esters. , polyoxyalkylene sorbitan fatty acid esters and polyoxyalkylene vegetable oils and salts thereof. The surfactant of the present invention is preferably polyoxyalkylene arylphenyl ether or its salt, more preferably polyoxyethylene aryl phenyl ether or its salt, and more preferably polyoxyethylene tristyrylphenyl ether or its salt.

Examples of the salt of the surfactant of the present invention include sulfates and phosphates, and sulfates are preferred.
Examples of these sulfates or phosphates include alkali metal salts such as sulfuric acid or phosphoric acid (e.g. lithium salt, sodium salt or potassium salt), alkaline earth metal salts such as sulfuric acid or phosphoric acid (e.g. , calcium salts or magnesium salts), salts of sulfuric acid or phosphoric acid and ammonium, or salts of sulfuric acid or phosphoric acid and various amines (for example, alkylamine salts, cycloalkylamine salts and alkanolamine salts), etc. ammonium sulfate is particularly preferred.

Examples of salts of polyoxyethylene tristyrylphenyl ether include sulfates and phosphates, and polyoxyethylene tristyrylphenyl ether sulfates are preferred.
Polyoxyethylene tristyrylphenyl ether sulfate is, for example, an alkali metal salt (e.g., lithium salt, sodium salt or potassium salt) or an alkaline earth metal salt (e.g., calcium salt or magnesium salts), salts of said sulfuric acid and ammonium, or salts of said sulfuric acid and various amines (e.g., alkylamine salts, cycloalkylamine salts and alkanolamine salts), etc., particularly polyoxyethylene tristyryl Phenyl ether sulfate ammonium salts are preferred.

The number of moles of ethylene oxide to be added to the polyoxyethylene tristyrylphenyl ether sulfate is not particularly limited, and various number of moles to be added can be employed. Specifically, for example, 9 to 16 can be mentioned.

Typical examples of widely used polyoxyethylene tristyrylphenyl ether sulfates include Solpol ^™ T-10SPG, Solpol ^™ T-15SPG, Solpol ^™ T-20SPG (manufactured by Toho Chemical Industry Co., Ltd.), Nucalgen ^™ FS. -72PG, Nucalgen ^™ FS-75PG, Nucalgen ^™ FS-77PG (manufactured by Takemoto Yushi Co., Ltd.), Soprophor ^™ 4D384 (manufactured by Rhodia Nicca Co., Ltd.) and the like.

The content of the surfactant of the present invention in the aqueous suspension pesticide composition of the present invention can be appropriately selected and determined depending on the physical properties of the surfactant of the present invention, the application scene, etc. It is generally 0.05 to 10 parts by weight, preferably 0.1 to 10 parts by weight, more preferably 1 to 5 parts by weight, per 100 parts by weight of the agricultural chemical composition.

The alkylnaphthalenesulfonate or condensate thereof in the aqueous suspension pesticide composition of the present invention means, for example, monoalkylnaphthalenesulfonate or dialkylnaphthalenesulfonate or condensates thereof. is, for example, a monoalkylnaphthalenesulfonate such as methylnaphthalenesulfonate, ethylnaphthalenesulfonate, propylnaphthalenesulfonate, isopropylnaphthalenesulfonate, butylnaphthalenesulfonate or isobutylnaphthalenesulfonate, or a condensation thereof dialkylnaphthalenesulfonates or condensates thereof, such as dimethylnaphthalenesulfonate, diethylnaphthalenesulfonate, diisopropylnaphthalenesulfonate, dibutylnaphthalenesulfonate or diisobutylnaphthalenesulfonate; or, for example, methylnonylnaphthalene Sulfonates or condensates thereof may be mentioned, and formalin condensates of alkylnaphthalene sulfonates are particularly preferred. A sodium salt is preferred as the alkylnaphthalene sulfonate. In particular, a formalin condensate of sodium alkylnaphthalenesulfonate is preferred.
Specific examples include formalin condensates of (mono- or di)alkyl (eg, C _1-6 )naphthalenesulfonic acid sodium salts. Representative examples of commonly used alkylnaphthalene sulfonates or condensates thereof include Morwet ^™ D-425 Powder (manufactured by Lion Akzo), Supragil ^™ MNS90, and Supragil ^™ RM/210EI (manufactured by Rhodia Nika). , Demol ^™ RN, Demol ^™ SNB (manufactured by Kao Corporation), Labelin ^™ FA-N (manufactured by Daiichi Kogyo Seiyaku Co., Ltd.), and the like.
In the present invention, these alkylnaphthalene sulfonates or condensates thereof can be used alone or in combination of two or more.

The content of the alkylnaphthalenesulfonate or the condensate thereof in the aqueous suspension pesticide composition of the present invention is appropriately selected and determined depending on the physical properties of the alkylnaphthalenesulfonate or the condensate thereof, the application scene, and the like. However, it is usually 0.05 to 20 parts by weight, preferably 0.1 to 15 parts by weight, and more preferably 1 to 10 parts by weight, based on 100 parts by weight of the aqueous suspension pesticide composition. .

The aqueous pesticide suspension composition of the present invention may optionally contain a surfactant other than the surfactant of the present invention and an interface other than the alkylnaphthalene sulfonate or condensate thereof, as long as the effects of the present invention are not impaired. It can contain an active agent. Specific examples of these surfactants include, for example, nonionic surfactants other than the surfactants of the present invention, anionic surfactants, cationic surfactants, which are commonly used in agricultural chemical formulations. Alternatively, an amphoteric surfactant or the like can be used.

Specifically, for example, nonions such as polyoxyalkylene alkyl ethers, polyoxyethylene aryl ethers, polyoxyethylene alkyl esters, polyoxyethylene alkylphenols, polyoxyethylene polyoxypropylene block polymers, alkyl glucosides, polyoxyethylene alkylamines, etc. surfactants; for example, polycarboxylates, ligninsulfonates, alkylbenzenesulfonates, alkylsulfates, α-olefinsulfonates, sulfosuccinates, arylsulfonates, methyltaurate, polyoxyethylene Anionic surfactants such as aryl ether sulfates, polyoxyalkylene aryl ether sulfates, polyoxyethylene alkyl ether sulfates, polyoxyethylene aryl ether phosphates; for example, alkylamine salts, quaternary ammonium salts, etc. or amphoteric surfactants such as alkylbetaines and amine oxides. These surfactants may be used alone or in combination of the same or different types. The amount of these surfactants in the present invention is generally 0.01 to 10 parts by weight, preferably 0.1 to 5 parts by weight, per 100 parts by weight of the aqueous pesticide suspension.

The aqueous pesticide suspension composition of the present invention further contains, if necessary, for example, an organic solvent, a thickener, a pH adjuster, an antifreezing agent, an antifoaming agent, an antifungal agent, a salt, and an antioxidant. , an ultraviolet absorber, and other auxiliary agents.

Examples of organic solvents include aromatic hydrocarbons such as 1,2-dimethyl-4-ethylbenzene, methylnaphthalene, 1-phenyl-1-xylylethane, and 1-xylyl-1,3-diphenylbutane; Paraffinic hydrocarbons such as isoparaffin and liquid paraffin; polybasic acid alcohol esters such as diisobutyl adipate, diisodecyl adipate, didecyl phthalate, diethylhexyl phthalate, 2-ethylhexyl trimetate and tridecyl trimetate; for example, 2-ethyl Fatty acid alcohol esters such as cetyl hexanoate, cetyl cocoate, methyl laurate and methyl oleate; polyhydric alcohol fatty acid esters such as sorbitan monolaurate and sorbitan monooleate; higher alcohols such as octyl alcohol and lauryl alcohol Alcohol and the like can be mentioned.

Examples of thickening agents include natural gums such as xanthan gum, welan gum, guar gum, tragacanth gum, and gum arabic; fine powders of inorganic mineral substances such as smectite, sepiolite, attapulgite, laponite, montmorillonite, and hectorite; , hydroxyethyl cellulose, carboxyethyl cellulose, methyl cellulose, hydroxypropyl cellulose, hydroxyethyl cellulose and other cellulose derivatives or salts thereof; for example, various grades of dextrin, starch derivatives such as carboxymethyl starch sodium salt; for example, sodium alginate, sodium caseinate, etc. or derivatives thereof; examples include water-soluble synthetic polymers such as polyvinyl alcohol, polyacrylic acid and derivatives thereof, and polyvinylpyrrolidone. Moreover, these thickening agents can be used individually or in combination of 2 or more types. The amount of the thickener to be used varies depending on the type of thickener, but it is usually 0.01 to 10 parts by weight, preferably 0.01 to 10 parts by weight, per 100 parts by weight of the aqueous pesticide suspension composition. 05 to 5 parts by weight.

Examples of pH adjusters include inorganic acids such as hydrochloric acid and phosphoric acid; organic acids such as citric acid, phthalic acid and succinic acid; organic metal salts such as sodium citrate and potassium hydrogen phthalate; Inorganic metal salts such as disodium hydrogen phosphate, sodium dihydrogen phosphate, dipotassium hydrogen phosphate, potassium dihydrogen phosphate, sodium carbonate, potassium carbonate, sodium borate; hydroxide; or organic amines such as triethanolamine. Further, for example, the pH can be controlled by adding a predetermined amount of various buffer solutions such as phosphoric acid-sodium phosphate aqueous solution, acetic acid-sodium acetate aqueous solution, citric acid-sodium citrate aqueous solution. These pH adjusters can be used alone or in combination of two or more.

Examples of antifreezing agents that can be used include ethylene glycol, diethylene glycol, propylene glycol, glycerin, and the like.

Examples of antifoaming agents include silicone-based, acetylene glycol-based, fluorine-based, and fatty acid-based antifoaming agents.

Examples of antifungal agents include benzothiazole derivatives, sorbic acid, potassium sorbate, and butyl p-oxybenzoate.

Salts include, for example, various inorganic acids such as hydrochloric acid, sulfuric acid, phosphoric acid, carbonic acid, sulfonic acid and carboxylic acid, or alkali metal salts of various organic acids such as citric acid, phthalic acid and succinic acid ( lithium salt, sodium salt, potassium salt, etc.); alkaline earth metal salt of the inorganic acid or organic acid (e.g., calcium salt, magnesium salt, etc.); ammonium salt of the inorganic acid or organic acid; Salts of acids or the organic acids and various amines (for example, alkylamine salts, cycloalkylamine salts, alkanolamine salts, etc.) and the like can be mentioned.

Examples of antioxidants include hindered phenol-based antioxidants, sulfur-based antioxidants, phosphorus-based antioxidants, amine-based antioxidants, lactone-based antioxidants, vitamin E-based antioxidants, and the like. can be done.

Examples of ultraviolet absorbers include inorganic compound ultraviolet absorbers such as titanium dioxide; and organic compound ultraviolet absorbers such as benzotriazole, benzophenone, triazine, benzoate, and salicylate.

The aqueous pesticidal suspension composition of the present invention is prepared by, for example, adding and mixing the above-mentioned active ingredient of pesticide, the surfactant of the present invention, the above-mentioned alkylnaphthalenesulfonate or a condensate thereof and optionally the above-mentioned adjuvant to water. It can be manufactured by

In addition, although it is possible to use the active ingredients of the agrochemical as they are, the coarseness of the particle size of the active ingredients may cause problems such as insufficient effectiveness of the aqueous suspension pesticide composition and phytotoxicity. Become. Therefore, even if the agricultural chemical active ingredient has a high water solubility, it is usually preferable to finely pulverize the active ingredient of the agricultural chemical active ingredient to some extent, and it is particularly preferable to finely pulverize the active ingredient having a low water solubility. For this reason, dry pulverization with a jet mill, hammer mill, pin mill, etc., or, if necessary, wet pulverization with a sand mill, ball mill, dyno mill, apex mill, attritor, etc. using a surfactant and a solvent such as water. and the active ingredient can be prepared into a powdery or liquid premix. In the premix, for example, the surfactant of the present invention such as polyoxyethylene tristyrylphenyl ether sulfate, the alkylnaphthalene sulfonic acid sodium salt or its condensate, other surfactants, organic solvents, thickeners, pH adjustment An antifreeze agent, an antifoaming agent, an antifungal agent, a salt, an antioxidant, an ultraviolet absorber and the like can be added to water to obtain the aqueous pesticide suspension composition of the present invention.

The aqueous pesticide suspension composition of the present invention has good wettability to plants and suitable surface tension. For example, the surface tension of a 0.05% by weight water dilution at 20° C. is 50-70 mN/m, more preferably 55-65 mN/m. The surface tension of the present invention is measured by the method described in Test Example 1.

The aqueous pesticide suspension composition of the present invention may be used as a stock solution or after being diluted with water to an appropriate concentration (approximately 5- to 20000-fold) and sprayed. At this time, it is possible not only to spray on the ground using a sprayer, but also to spray from the air using an aircraft or a helicopter, but it is not limited to these.

EXAMPLES The present invention will be described in more detail below with reference to Examples, Comparative Examples and Test Examples, but the present invention is not limited to these. All of the compounding ratios shown here are parts by weight.

(Preparation Example 1)
Brofuranilide raw material (solubility in water at 20 ° C. 0.7 ppm) 50.0 parts, Soprophor ^TM FLK (polyoxyethylene styryl phenol phosphate ester salt, manufactured by Rhodia Nika Co., Ltd.) 2.0 parts, Nucalgen ^TM EP-70G (Dioctyl sulfosuccinate, manufactured by Takemoto Yushi Co., Ltd.) 1.0 part, Pronal ^TM EX-150 (silicone antifoaming agent, manufactured by Toho Chemical Industry Co., Ltd.) 0.1 part and water 46.9 parts were mixed to obtain The mixture was wet pulverized with an attritor to obtain a brofuranilide slurry with a median diameter of 0.6 μm. The particle size distribution for calculating the median diameter of the aqueous pesticide suspension of the present invention was measured with a laser diffraction particle size distribution analyzer LA-950 (manufactured by Horiba, Ltd.).

(Preparation Example 2)
50.0 parts of 3-(4,4-difluoro-3,3-dimethyl-3,4-dihydroisoquinolin-1-yl)quinoline raw material (water solubility 2.4 ppm at 20° C., hereinafter referred to as compound A); 2.0 parts of Soprophor ^™ FLK, 1.0 part of Nucalgen ^™ EP-70G, 0.1 part of Pronal ^™ EX-150 and 46.9 parts of water were mixed, and the resulting mixture was wet pulverized with an attritor. Thus, a compound A slurry having a median diameter of 0.7 μm was obtained.

(Preparation Example 3)
50.0 parts of simeconazole drug substance (water solubility 57.5 ppm at 20° C.), 2.0 parts of Soprophor ^™ FLK, 1.0 parts of Nucalgen ^™ EP-70G, 0.1 parts of Pronal ^™ EX-150 and 46.0 parts of water. 9 parts were mixed, and the resulting mixture was wet pulverized with an attritor to obtain a simeconazole slurry having a median diameter of 4.3 μm.

(Preparation Example 4)
Kelzan ^TM S (xanthan gum, manufactured by CP Kelco) 0.47 parts, Proxel ^TM GXL (S) (1,2-benzisothiazol-3(2H)-one, manufactured by Arch Chemicals Japan) 0.33 parts , 13.33 parts of propylene glycol and 85.87 parts of water were mixed to prepare a thickener solution A.

(Preparation Example 5)
0.47 parts of Kelzan ^TM S, 0.50 parts of Proxel ^TM GXL(S), 18.75 parts of propylene glycol and 80.28 parts of water were mixed to prepare a thickener solution B.

[Example 1]
Brofuranilide slurry of Preparation Example 1 10.0 parts, Sorpol ^TM T-15SPG (polyoxyethylene tristyrylphenyl ether sulfate ammonium salt, ethylene oxide addition mole number 14, manufactured by Toho Chemical Industry Co., Ltd.) 3.0 parts, Morwet ^TM D -425 Powder (alkylnaphthalenesulfonic acid formalin condensate sodium salt, manufactured by Lion Akzo Co., Ltd.) 5.0 parts, thickener solution A 60.0 parts and water 22.0 parts were mixed to form an aqueous suspension pesticide composition. got

[Example 2]
In Example 1, an aqueous suspension was prepared in the same manner as in Example 1 except that 5.0 parts of Morwet ^TM D-425 Powder was changed to 10.0 parts and 22.0 parts of water was changed to 17.0 parts. A pesticide composition was obtained.

[Example 3]
In Example 2, an aqueous pesticide suspension was prepared in the same manner as in Example 2, except that 3.0 parts of Sorpol ^TM T-15SPG was changed to 5.0 parts and 17.0 parts of water was changed to 15.0 parts. A composition was obtained.

[Example 4]
Same as Example 1, except that Sorpol ^™ T-15SPG was replaced with Solpol ^™ T-10SPG (polyoxyethylene tristyrylphenyl ether sulfate ammonium salt, ethylene oxide addition mole number: 9, manufactured by Toho Chemical Industry Co., Ltd.). to obtain an aqueous pesticide suspension composition.

[Example 5]
40.0 parts of the brofuranilide slurry of Preparation Example 1 , 3.0 parts of Sorpol ^TM T-15SPG, 5.0 parts of Morwet ^TM D-425 Powder, 40.0 parts of thickener solution B and 12.0 parts of water After mixing, an aqueous pesticide suspension composition was obtained.

[Example 6]
An aqueous pesticide suspension composition was obtained in the same manner as in Example 1, except that the brofuranilide slurry was replaced with the compound A slurry.

[Example 7]
An aqueous pesticide suspension composition was obtained in the same manner as in Example 1, except that the brofuranilide slurry was replaced with a simeconazole slurry.

[Example 8]
In Example 1, the same procedure as in Example 1 was repeated except that Soprophor ^™ 4D384 (polyoxyethylene tristyrylphenyl ether sulfate ammonium salt, ethylene oxide addition mole number: 16, manufactured by Rhodia Nika Co., Ltd.) was used instead of Soprophor ^™ T-15SPG. , to obtain an aqueous suspension pesticide composition.

[Comparative Example 1]
10.0 parts of the brofuranilide slurry of Preparation Example 1 , 60.0 parts of thickener solution A and 30.0 parts of water were mixed to obtain an aqueous pesticide suspension composition of Comparative Example 1.

[Comparative Example 2]
10.0 parts of the brofuranilide slurry of Preparation Example 1 , 3.0 parts of Sorpol ^TM T-15SPG, 60.0 parts of thickener solution A and 27.0 parts of water were mixed to form an aqueous suspension of Comparative Example 2. A pesticide composition was obtained.

[Comparative Example 3]
10.0 parts of the brofuranilide slurry of Preparation Example 1 , 5.0 parts of Morwet ^TM D-425 Powder, 60.0 parts of thickener solution A and 25.0 parts of water were mixed to prepare an aqueous suspension of Comparative Example 3. A turbid pesticide composition was obtained.

[Comparative Example 4]
Brofuranilide slurry 10.0 parts of Preparation Example 1 , Noigen ^TM TDS-50 (polyoxyethylene tridecyl ether, manufactured by Daiichi Kogyo Seiyaku Co., Ltd.) 3.0 parts, Morwet ^TM D-425 Powder 5.0 parts, increased 60.0 parts of viscous solution A and 22.0 parts of water were mixed to obtain an aqueous pesticide suspension composition of Comparative Example 3.

[Comparative Example 5]
In Comparative Example 4, the aqueous suspension of Comparative Example 5 was prepared in the same manner as in Comparative Example 4 except that Noigen ^TM TDS-50 was replaced with Noigen ^TM TDS-80 (polyoxyethylene tridecyl ether, manufactured by Daiichi Kogyo Seiyaku Co., Ltd.). A turbid pesticide composition was obtained.

[Comparative Example 6]
In Comparative Example 4, the aqueous suspension of Comparative Example 6 was prepared in the same manner as in Comparative Example 4 except that Noigen ^TM TDS-50 was replaced with Noigen ^TM XL-6190 (polyoxyalkylene decyl ether, manufactured by Daiichi Kogyo Seiyaku Co., Ltd.) A pesticide composition was obtained.

[Comparative Example 7]
In Comparative Example 4, the aqueous suspension of Comparative Example 7 was prepared in the same manner as in Comparative Example 4 except that Neugen ^TM TDS-50 was replaced with Pluronic ^TM L-61 (polyoxyethylene polyoxypropylene block polymer, manufactured by BASF) A pesticide composition was obtained.

[Comparative Example 8]
In Comparative Example 4, the aqueous pesticide suspension composition of Comparative Example 8 was prepared in the same manner as in Comparative Example 4 except that Neugen ^™ TDS-50 was replaced with Emulan ^™ LVA (polyoxyethylene alkyl ether, manufactured by BASF). Obtained.

[Comparative Example 9]
An aqueous pesticide suspension composition of Comparative Example 9 was obtained in the same manner as in Comparative Example 4, except that Noigen ^TM TDS-50 was replaced with Nucalgen ^TM 4000G (alkyl glucoside, manufactured by Takemoto Yushi Co., Ltd.). rice field.

[Comparative Example 10]
Brofuranilide slurry of Preparation Example 1 10.0 parts, Sorpol ^TM T-15SPG 3.0 parts, Sokalan ^TM PA-20 (sodium polyacrylate, manufactured by BASF) 5.0 parts, thickener solution A 60. 0 part and 22.0 parts of water were mixed to obtain an aqueous pesticide suspension composition of Comparative Example 10.

[Comparative Example 11]
An aqueous pesticide suspension composition of Comparative Example 11 was prepared in the same manner as in Comparative Example 10, except that Sokalan ^TM PA-20 was replaced with Sanex ^TM P252 (sodium ligninsulfonate, manufactured by Nippon Paper Industries Co., Ltd.). got

[Comparative Example 12]
An aqueous pesticide suspension composition of Comparative Example 12 was obtained in the same manner as in Comparative Example 10, except that Sorpol ^™ T-15SPG was replaced with Nucalgen ^™ 4000G.

[Comparative Example 13]
40.0 parts of Brofuranilide slurry of Preparation Example 1 , 3.0 parts of Neugen ^TM TDS-80, 5.0 parts of Morwet ^TM D-425 Powder, 40.0 parts of thickener solution B and 12.0 parts of water By mixing, an aqueous pesticide suspension composition of Comparative Example 13 was obtained.

[Comparative Example 14]
An aqueous pesticide suspension composition of Comparative Example 14 was obtained in the same manner as in Comparative Example 2 except that the brofuranilide slurry in Comparative Example 2 was replaced with the Compound A slurry.

Next, Test Examples 1 to 3 were conducted in order to demonstrate the usefulness of the aqueous pesticide suspension composition of the present invention.
Evaluation results are shown in Tables 1, 2 and 3.

[Test Example 1] (surface tension)
Using the aqueous pesticide suspension compositions of Examples 1 to 8 and Comparative Examples 1 to 14 immediately after production, 0.05 wt% water dilutions were prepared, and subjected to a Dunui surface tension tester (( The surface tension was measured using a platinum plate by Ito Seisakusho Co., Ltd.).

[Test Example 2] (Wettability of diluted solution to plants)
0.2% by weight water dilutions were prepared using the aqueous pesticide suspension compositions of Examples 1 to 8 and Comparative Examples 1 to 14 immediately after production. Next, 10 mL of the diluted solution was sprayed on cabbage (variety: four seasons, diameter: about 11 cm) using a hand spray. The wettability of the surface of cabbage leaves after spraying was evaluated in the following three grades.
A: Leaves get wet, and many water droplets remain on the leaves.
B: The leaves are wet to some extent, and a small amount of water droplets remain on the leaves.
C: The leaves did not get wet, and almost no water droplets remained on the leaves.

[Test Example 3] (Particle growth after storage of formulation)
The median diameters of the aqueous pesticide suspension compositions of Examples 1 to 8 and Comparative Examples 1 to 14 immediately after production were measured. 100 mL was placed in a plastic bottle with a capacity of 100 mL, sealed, and allowed to stand in a 54° C. constant temperature machine. After 30 days, they were taken out and the median diameter of each sample was measured.
From the measurements, the particle growth rate was calculated based on the following formula.
Particle growth rate = (median diameter after 30 days at 54°C/median diameter immediately after production) x 100
From the calculated particle growth rate, the particle growth property was evaluated in the following three stages.
A: Particle growth rate less than 150% B: Particle growth rate 150% or more and less than 250% C: Particle growth rate 250% or more

According to the present invention, even if a solid agrochemical active ingredient with low water solubility is used, the agrochemical active ingredient, the surfactant of the present invention such as polyoxyethylene tristyrylphenyl ether sulfate, The aqueous pesticidal suspension composition containing the condensate not only suppresses particle growth of the components in the prepared composition, but also has good wettability to plants. Suspended pesticide compositions are capable of exerting a sufficient biological effect.

Claims (13)

A solid having a water solubility of 100 ppm or less at 20°C , selected from 3-(4,4-difluoro-3,3-dimethyl-3,4-dihydroisoquinolin-1-yl)quinoline and simeconazole and salts thereof one or more agrochemical active ingredients;
a surfactant selected from the group consisting of polyoxyalkylene alkylphenyl ethers, polyoxyalkylene arylphenyl ethers, sorbitan fatty acid esters, polyoxyalkylene fatty acid esters, polyoxyalkylene sorbitan fatty acid esters and polyoxyalkylene vegetable oils and salts thereof; at least one; and an alkylnaphthalene sulfonate or a condensate thereof. A composition according to claim 1, wherein the surfactant is a polyoxyalkylenearylphenyl ether or salt thereof. A composition according to claim 1, wherein the surfactant is polyoxyethylene tristyrylphenyl ether or a salt thereof. A composition according to claim 1, wherein the surfactant is polyoxyethylene tristyrylphenyl ether sulfate. The composition according to claim 1, wherein the alkylnaphthalenesulfonate or condensate thereof is a monoalkylnaphthalenesulfonate or dialkylnaphthalenesulfonate or a condensate thereof. Alkylnaphthalenesulfonates or condensates thereof are methylnaphthalenesulfonates, ethylnaphthalenesulfonates, propylnaphthalenesulfonates, isopropylnaphthalenesulfonates, butylnaphthalenesulfonates or isobutylnaphthalenesulfonates, and dimethylnaphthalenesulfonates. 2. The composition according to claim 1, which is an acid salt, diethylnaphthalenesulfonate, diisopropylnaphthalenesulfonate, dibutylnaphthalenesulfonate or diisobutylnaphthalenesulfonate or methylnonylnaphthalenesulfonate or condensates thereof. The composition according to claim 1, wherein the alkylnaphthalenesulfonate or condensate thereof is an alkylnaphthalenesulfonate sodium salt formalin condensate. 8. Any one of claims 1 to 7, wherein the agricultural chemical active ingredient is 3-(4,4-difluoro-3,3-dimethyl-3,4-dihydroisoquinolin-1-yl)quinoline or simeconazole or a salt thereof Aqueous suspension pesticide composition according to the above paragraph. 2. The aqueous suspension pesticide composition according to claim 1, wherein the agricultural chemical active ingredient is 0.05 to 50 parts by weight per 100 parts by weight of the aqueous suspension pesticide composition. The aqueous suspension pesticide composition according to claim 1, wherein the surfactant is 0.05 to 10 parts by weight with respect to 100 parts by weight of the aqueous suspension pesticide composition. 2. The aqueous suspension pesticide composition according to claim 1, wherein the alkylnaphthalene sulfonate or its condensate is 0.05 to 20 parts by weight per 100 parts by weight of the aqueous suspension pesticide composition. 2. The agricultural and horticultural wettable powder according to claim 1, wherein a 0.05% by weight water dilution of the aqueous pesticide suspension has a surface tension of 50 to 70 mN/m at 20.degree. Use of the agricultural and horticultural wettable powder according to claim 12, wherein a 0.05% by weight water dilution of the aqueous pesticide suspension at 20°C has a surface tension of 55 to 65 mN/m.