JP2000302603A - Granular wettable powder - Google Patents

Abstract

(57) [Problem] To provide a water dispersible agricultural chemical granule capable of reducing the power load during production. SOLUTION: The granular wettable powder comprising an agrochemical active ingredient, a surfactant, talc and kaolin clay, and a method for producing the same.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a granular wettable powder for agricultural chemicals.

[0002]

BACKGROUND ART Granular wettable powders of agricultural chemicals are sprayed on crops after dilution with water.
The granular wettable powder is a preparation that is easy to handle, as compared with a wettable powder, in that there is no dusting at the time of preparing a diluent, and that measurement by volume can be performed relatively accurately. However, when the dispersibility in water of the granular wettable powder is not good, the active ingredient in the diluent becomes non-uniform, which causes unevenness in the application of the diluent. The spray unevenness may cause a partial decrease in potency at the application site and the occurrence of phytotoxicity.

[0003] In addition, when the granular wettable powder is produced by, for example, the most common extrusion granulation method, particularly when a granular wettable powder having a relatively small particle size is produced by this method. However, there is a problem that power consumption increases due to an increase in load on the granulator, which contributes to an increase in manufacturing cost and causes mechanical trouble due to excessive load.

[0004]

Under these circumstances, the inventors of the present invention have repeatedly studied water dispersible agricultural chemical granules, and found that talc and kaolin clay were used as solid carriers in the granular wettable powder. In such a case, the inventors have found that the power consumption in the production of the water dispersible granules can be reduced, and have reached the present invention. That is, the present invention relates to a water dispersible granule (hereinafter, referred to as the present agent) containing an agrochemical active ingredient, a surfactant, talc, and a kaolin-based clay, and a method for producing the same. .

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION Examples of the pesticidal active ingredient used in the present invention include compounds useful as pesticides such as insecticides, insect growth regulators, fungicides, herbicides or plant growth regulators. These compounds can be used alone or in combination of two or more.

Specifically, the pesticidal active ingredient of the present invention includes:
For example, the following compounds can be mentioned. These compounds may be either geometric isomers or optical isomers, or may be any mixture of the isomers. O, O-dimethyl O- (3-methyl-4-nitrophenyl) phosphorothioate, O, O-dimethyl O
-(3-methyl-4- (methylthio) phenyl) phosphorothioate, O, O-diethyl-O-2-isopropyl-6-methylpyrimidin-4-yl phosphorothioate, O, O-diethyl-O-3,5,6 -Trichloro-
2-pyridyl phosphorothioate, O, S-dimethylacetyl phosphoramidothioate, S-2,3-dihydro-5-methoxy-2-oxo-1,3,4-thiadiazol-3-ylmethyl O, O-dimethyl phosphoro Dithioate, O, O-diethyl S-2-ethylthioethyl phosphorodithioate, 2,2-dichlorovinyldimethyl phosphate, O-ethyl O-4- (methylthio) phenyl S-propyl phosphorodithioate, O- 4-cyanophenyl O, O-dimethyl phosphorothioate, 2-
Methoxy-4H-1,3,2-benzodioxaphosphorin-2-sulfide, O, O-dimethyl-S- (N-methylcarbamoylmethyl) dithiophosphate, ethyl 2-dimethoxyphosphinothioylthio (phenyl) Acetate, diethyl (dimethoxyphosphinothioylthio) succinate, dimethyl 2,2,2-trichloro-
1-hydroxyethylphosphonate, S-3,4-dihydro-4-oxo-1,2,3-benzotriazine-3
-Ylmethyl O, O-dimethyl phosphorodithioate,
Dimethyl-{(E) -1-methyl-2- (methylcarbamoyl) vinyl) phosphate, O, O, O ', O'-
Organic phosphorus compounds such as tetraethyl-S, S'-methylenebis (phosphorodithioate) and O-2,6-dichloro-4-methylphenyl O, O-dimethylphosphorothioate;

2-sec-butylphenylmethylcarbamate, ethyl N- {2,3-dihydro-2,2-dimethylbenzofuran-7-yloxycarbonyl (methyl) aminothio} -N-isopropyl-β-alaninate, 2- Isopropoxyphenyl-N-methylcarbamate, 2,3-dihydro-2,2-dimethyl-7-benzo [b] furanyl N-dibutylaminothio-N-methylcarbamate, 1-naphthyl-N-methylcarbamate, S- Methyl-N- (methylcarbamoyloxy) thioacetimidate, 2- (ethylthiomethyl) phenylmethylcarbamate, 2-methyl-2- (methylthio) propionaldehyde O-methylcarbamoyloxime, N, N-dimethyl-2- Methylcarbamoyloxyimino-2- (methyl Thio) acetamide, S-4
Carbamate compounds such as -phenoxybutyl-N, N-dimethylthiocarbamate;

2- (4-ethoxyphenyl) -2-methyl-1- (3-phenoxybenzyl) oxypropane,
(RS) -α-cyano-3-phenoxybenzyl (R
S) -2- (4-Chlorophenyl) -3-methylbutyrate, (S) -α-cyano-3-phenoxybenzyl
(S) -2- (4-chlorophenyl) -3-methylbutyrate, (RS) -α-cyano-3-phenoxybenzyl 2,2,3,3-tetramethylcyclopropanecarboxylate, (RS) -α -Cyano-3-phenoxybenzyl (1RS) -cis, trans-3- (2,2
-Dichlorovinyl) -2,2-dimethylcyclopropanecarboxylate, 3-phenoxybenzyl (1R
S) -cis, trans-3- (2,2-dichlorovinyl) -2,2-dimethylcyclopropanecarboxylate, (RS) -α-cyano-3-phenoxybenzyl
(1RS, 3Z) -cis-3- (2-chloro-3,3,3
3-trifluoroprop-1-enyl) -2,2-dimethylcyclopropanecarboxylate, (S) -α-cyano-3-phenoxybenzyl (1R) -cis-3-
(2,2-dibromovinyl) -2,2-dimethylcyclopropanecarboxylate, (RS) -α-cyano-3
-Phenoxybenzyl (RS) -2,2-dichloro-
1- (4-ethoxyphenyl) cyclopropanecarboxylate, α-cyano-3-phenoxybenzyl N-
(2-chloro-α, α, α-trifluoro-p-tolyl) -D-valinate, 2-methyl-3-phenylbenzyl (1RS, 3Z) -cis-3- (2-chloro-
3,3,3-trifluoro-1-propenyl) -2,2
-Dimethylcyclopropanecarboxylate, 2- (4
-Bromodifluoromethoxyphenyl) -2-methyl-
1- (3-phenoxybenzyl) methylpropane,
(S) -α-cyano-3-phenoxybenzyl (1
R) -cis-3- (1,2,2,2-tetrabromoethyl) -2,2-dimethylcyclopropanecarboxylate, (4-ethoxyphenyl)-{3- (4-fluoro-3-phenoxyphenyl) ) Propyl｝ dimethylsilane, 3-phenoxybenzyl (1R) -cis, trans-2,2-dimethyl-3- (2-methyl-1-propenyl) cyclopropanecarboxylate, (RS) -α-
Cyano-3-phenoxybenzyl (1R) -cis, trans-2,2-dimethyl-3- (2-methyl-1-propenyl) cyclopropanecarboxylate, 5-benzyl-3-furylmethyl (1R) -cis, Transformer
2,2-dimethyl-3- (2-methyl-1-propenyl) cyclopropanecarboxylate, (S) -α-cyano-3-phenoxybenzyl (1R, 3Z) -cis- (2,2-dimethyl-3) -｛3-oxo-3- (1,
1,1,3,3,3-hexafluoropropyloxy)
Propenyl @ cyclopropanecarboxylate, (R
S) -α-Cyano-4-fluoro-3-phenoxybenzyl 3- (2,2-dichlorovinyl) -2,2-dimethylcyclopropanecarboxylate, 2,3,5,6
-Tetrafluoro-4-methylbenzyl (1RS, 3
Z) -cis-3- (2-chloro-3,3,3-trifluoro-1-propenyl) -2,2-dimethylcyclopropanecarboxylate, 2,3,5,6-tetrafluorobenzyl (1R) -Trans-3- (2,2-dichlorovinyl) -2,2-dimethylcyclopropanecarboxylate, 3,4,5,6-tetrahydrophthalimidomethyl (1RS) -cis, trans-2,2-dimethyl-3 -(2-methyl-1-propenyl) cyclopropanecarboxylate, (RS) -2-methyl-4-oxo-3- (2-propenyl) -2-cyclopentene-
1-yl (1RS) -cis, trans-2,2-dimethyl-3- (2-methyl-1-propenyl) cyclopropanecarboxylate, (S) -2-methyl-4-oxo-3- ( 2-propynyl) -2-cyclopentene-1
-Yl (1R) -cis, trans-2,2-dimethyl-3- (2-methyl-1-propenyl) cyclopropanecarboxylate, (RS) -1-ethynyl-2-methyl-2-pentenyl ( 1R) -cis, trans-2,
2-dimethyl-3- (2-methyl-1-propenyl) cyclopropanecarboxylate, 2,5-dioxo-3
-(2-propynyl) imidazolidin-1-ylmethyl (1R) -cis, trans-2,2-dimethyl-3-
(2-methyl-1-propenyl) cyclopropanecarboxylate, 5- (2-propynyl) furfuryl (1
R) -cis, trans-2,2-dimethyl-3- (2-
Methyl-1-propenyl) cyclopropanecarboxylate, 5- (2-propynyl) furfuryl 2,2,3
Pyrethroid compounds such as 3-tetramethylcyclopropane carboxylate,

2-tert-butylimino-3-isopropyl-5-phenyl-1,3,5-thiadiazine-4
-Thiadiazine derivatives such as -one, nitroimidazolidine derivatives, S, S '-(2-dimethylaminotrimethylene) bis (thiocarbamate), N, N-dimethyl-
1,2,3-trithian-5-ylamine, S, S'-
Nereistoxin derivatives such as 2-dimethylaminotrimethylene di (benzenethiosulfonate) and N-cyano such as N-cyano-N'-methyl-N '-(6-chloro-3-pyridylmethyl) acetamidine Amidine derivatives,
6,7,8,9,10,10-Hexachloro-1,5,
5a, 6,9,9a-Hexahydro-6,9-methano-
2,4,3-benzodioxathiepine oxide, 1,
2,3,4,5,6-hexachlorocyclohexane,
Chlorinated hydrocarbon compounds such as 1,1-bis (4-chlorophenyl) -2,2,2-trichloroethanol;
{3,5-dichloro-4- (3-chloro-5-trifluoromethylpyridin-2-yloxy) phenyl} -3
-(2,6-difluorobenzoyl) urea, 1-
(3,5-dichloro-2,4-difluorophenyl)-
3- (2,6-difluorobenzoyl) urea, 1-
Benzoylphenylurea-based compounds such as {4- (2-chloro-4-trifluoromethylphenoxy) -2-fluorophenyl} -3- (2,6-difluorobenzoyl) urea, N, N '-} (methylimino) Dimethylidine {-di-2,4-xylysine, N '-(4-chloro-
Formamidine derivatives such as 2-methylphenyl) -N, N-dimethylmethinimidamide; thiourea derivatives such as N- (2,6-diisopropyl-4-phenoxyphenyl) -N'-t-butylcarbodiimide; Phenylpyrazole compounds,

5-methoxy-3- (2-methoxyphenyl) -1,3,4-oxadiazole-2- (3H)-
On, isopropyl 4,4'-dibromobenzylate,
4-chlorophenyl 2,4,5-trichlorophenylsulfone, S, S-6-methylquinoxaline-2,3-
Diyldithiocarbonate, 2- (4-tert-butylphenoxy) cyclohexylprop-2-ylsulfite, bis {tris (2-methyl-2-phenylpropyl) tin} oxide, (4RS, 5RS) -5
(4-chlorophenyl) -N-chlorohexyl-4-methyl-2-oxo-1,3-thiazolidine-3-carboxamide, 3,6-bis (2-chlorophenyl) -1,
2,4,5-tetrazine, 2-tert-butyl-5-
(4-tert-butylbenzylthio) -4-chloropyridazin-3 (2H) -one, tert-butyl
(E) -4-[(1,3-Dimethyl-5-phenoxypyrazol-4-yl) methyleneaminooxymethyl] benzoate, N-4-tert-butylbenzyl) -4
-Chloro-3-ethyl-1-methyl-5-pyrazolecarboxamide, tetranactin, dinactin, trinactin, 5-chloro-N- [2- {4- (2-ethoxyethyl) -2,3-dimethylphenoxy} ethyl] -6
Ethylpyrimidin-4-amine], milbemectin, abamectin, ivermectin, azadirachtin [AZA
D], 5-methyl [1,2,4] triazolo [3,4-
b] benzothiazole, methyl 1- (butylcarbamoyl) benzimidazole-2-carbamate, 6-
(3,5-dichloro-4-methylphenyl) -3 (2
H) -Pyridazinone, 1- (4-chlorophenoxy)-
3,3-dimethyl-1- (1H-1,2,4-triazol-1-yl) butanone, (E) -4-chloro-2-
(Trifluoromethyl) -N- [1- (imidazole-
1-yl) -2-propoxyethylidene] aniline, 1
-[N-propyl-N- [2- (2,4,6-trichlorophenoxy) ethyl] carbamoyl] imidazole,
(E) -1- (4-chlorophenyl) -4,4-dimethyl-2- (1H-1,2,4-triazol-1-yl) -1-penten-3-ol, 1- (4-chlorophenyl ) -4,4-Dimethyl-2- (1H-1,2,4
-Triazol-1-yl) pentan-3-ol,
(E) -1- (2,4-dichlorophenyl) -4,4-
Dimethyl-2- (1H-1,2,4-triazole-1
-Yl) -1-penten-3-ol, 1- (2,4-
Dichlorophenyl) -4,4-dimethyl-2- (1H-
1,2,4-triazol-1-yl) pentane-3-
All, 4- [3- (4-tert-butylphenyl) -2
-Methylpropyl] -2,6-dimethylmorpholine, 2
-(2,4-dichlorophenyl) -1- (1H-1,
2,4-triazol-1-yl) hexane-2-ol, O, O-diethyl O-2-quinoxalinyl phosphorothioate, O- (6-ethoxy-2-ethyl-4)
-Pyrimidinyl) O, O-dimethyl phosphorothioate, 2-diethylamino-5,6-dimethylpyrimidin-4-yl dimethylcarbamate, 4- (2,4-
Dichlorobenzoyl) -1,3-dimethyl-5-pyrazolyl p-toluenesulfonate, 4-amino-6
(1,1-dimethylethyl) -3-methylthio-1,
2,4-triazin-5 (4H) -one, 2-chloro-
N-[(4-methoxy-6-methyl-1,3,5-triazin-2-yl) aminocarbonyl] benzenesulfonamide, 2-methoxycarbonyl-N-[(4,6-
Dimethoxypyrimidin-2-yl) aminocarbonyl]
Benzenesulfonamide, 2-methoxycarbonyl-N
-[(4,6-dimethylpyrimidin-2-yl) aminocarbonyl] benzenesulfonamide, 2-methoxycarbonyl-N-[(4-methoxy-6-methyl-1,
3,5-triazin-2-yl) aminocarbonyl] benzenesulfonamide, 2-ethoxycarbonyl-N-
[(4-chloro-6-methoxypyrimidin-2-yl)
Aminocarbonyl] benzenesulfonamide, 2- (2
-Chloroethoxy) -N-[(4-methoxy-6-methyl-1,3,5-triazin-2-yl) aminocarbonyl] benzenesulfonamide, 2-methoxycarbonyl-N-[(4,6-dimethoxy Pyrimidin-2-yl) aminocarbonyl] phenylmethanesulfonamide, 2-methoxycarbonyl-N-[(4-methoxy-
6-methyl-1,3,5-triazin-2-yl) aminocarbonyl] thiophen-3-sulfonamide, 4-
Ethoxycarbonyl-N-[(4,6-dimethoxypyrimidin-2-yl) aminocarbonyl] -1-methylpyrazole-5-sulfonamide, 2- [4,5-dihydro-4-methyl-4- (1- Methylethyl) -5-oxo-1H-imidazol-2-yl] -3-quinolinecarboxylic acid, 5-ethyl-5,8-dihydro-8-oxo [1,3] dioxolo [4,5-g] quinoline -7-carboxylic acid, 2- [4,5-dihydro-4-methyl-4-
(1-Methylethyl) -5-oxo-1H-imidazol-2-yl] -5-ethyl-3-pyridinecarboxylic acid, methyl 6- (4-isopropyl-4-methyl-5)
-Oxoimidazolin-2-yl) -m-toluate,
Methyl 2- (4-isopropyl-4-methyl-5-oxoimidazolin-2-yl) -p-toluate, 2-
(4-Isopropyl-4-methyl-5-oxoimidazolin-2-yl) nicotinic acid, N- (4-chlorophenyl) methyl-N-cyclopentyl-N'-phenylurea, (RS) -2-cyano-N- [(R) -1 (2,4
-Dichlorophenyl) ethyl] -3,3-dimethylbutylamide, N- (1,3-dihydro-1,1,3-trimethylisobenzofuran-4-yl) -5-chloro-
1,3-dimethylpyrazole-4-carboxamide,
N- [2,6-dibromo-4- (trifluoromethoxy) phenyl] -2-methyl-4- (trifluoromethyl) -5-thiazol-carboxamide, 2,2-dichloro-N- [1- (4-chlorophenyl) ethyl] -3
-Methylcyclopropanecarboxamide, methyl (E) -2-6- (2-cyanophenoxy) pyrimidin-4-yloxy-phenyl-3-methoxyacrylate, 5-methyl-1,2,4-triazolo [ 3,4
-B] benzothiazole, 3-allyloxy-1,2-
Benzoisothiazole-1,1-dioxide, diisopropyl = 1,3-dithiolan-2-ylidene-malonate, O, O-dipropyl-O-4-methylthiophenyl phosphate and the like.

The content of the pesticidal active ingredient in the present agent is usually about 1 to 80% by weight, preferably 5 to 70% by weight in view of granulation property and biological activity.

Examples of the surfactant include a nonionic surfactant, an anionic surfactant, a cationic surfactant, an amphoteric surfactant and a mixture thereof. Usually, nonionic and / or anionic surfactants are used. Specific examples of the nonionic surfactant include, for example, polyoxyethylene carboxylate, polyoxyethylene polyoxypropylene alkylaryl ether, polyoxyethylene polyoxypropylene block copolymer, polyoxyethylene alkylaryl ether, polyoxyethylene Ethylene alkyl ether, polyoxyethylene polyoxypropylene tristyryl phenyl ether, polyoxyethylene styryl phenyl ether, polyoxyethylene tristyryl phenyl ether, polyoxyethylene fatty acid ester, fatty acid ester, polyhydric alcohol fatty acid ester, polyoxyethylene polyvalent Examples thereof include alcohol fatty acid esters and polyoxyethylene alkylamines. Specific examples of the anionic surfactant include, for example, dialkyl sulfocarboxylates, alkyl sulfates, alkylaryl sulfonates, polycarboxylates, polyoxyethylene alkylaryl ether phosphates, polyoxyethylene tristyrylphenyl Examples thereof include ether phosphate esters, alkyl naphthalene sulfonates, metal salts of naphthalene sulfonic acid polycondensates, alkenyl sulfonates, formalin condensates of naphthalene sulfonic acids, dialkyl succisulfonates, and lignin sulfonates. From the viewpoint of the susceptibility of the pesticidal active ingredient, polycarboxylates, formalin condensates of naphthalenesulfonic acid, dialkylsuccisulfonates, ligninsulfonates and the like are preferable, polycarboxylates are more preferable, and maleic acid and diisobutylene Further preferred is a copolymer or a copolymer of maleic anhydride and diisobutylene. The surfactant is usually contained in the present agent in an amount of 3 to 40% by weight, preferably 5 to 30% by weight, more preferably 6 to 20% by weight.

The talc used in the present invention is obtained by pulverizing talc of natural ore, and its main component is magnesium silicate or magnesium acid metasilicate. The particle diameter is preferably 1 to 15 μm as a median diameter from the viewpoint of disintegration dispersibility in water and granulation properties. In addition, talc having an angle of repose of 30 to 75 ° measured by an injection angle method is preferable from the viewpoint of granulation properties. The content of talc in the present agent in the present invention is usually 1 to 80% by weight, and is preferably about 5 to 70% by weight, and
0% by weight is more preferred.

The kaolin-based clay used in the present invention is a clay mineral containing as a main component kaolin (eg, kaolinite, nacrite, dickite, halloysite, hydrohaloysite, etc.) having a layered structure of an alumina layer and a silicic acid layer. Contains at least 50% by weight of kaolin. Specific examples include clay containing kaolinite as a main component and clay containing kaolinite and halloysite as main components. As long as it contains kaolin as a main component, it may contain clay minerals other than kaolin, such as pyrophyllite. Such kaolin clays are commercially available. For example, Barden AG-1 (Hube
r-brand product name), ASP-170, ASP-200, ASP-600, ASP-400
P (above, trade name of Engelhard), A clay, SP clay (above, trade name of Katsumitsuyama Mining Works), Fubasami M clay, Fubasami MS clay, Fubasami MF clay (above, Fubasami clay products) Commercially available kaolin clay such as (name) can be used. The content of the kaolin clay in the present agent is usually 1 to 80% by weight, preferably about 5 to 70% by weight, and more preferably 10 to 50% by weight, from the viewpoints of granulation properties and disintegration in water. It is.

In the present invention, the weight ratio of talc to kaolin clay is usually from 1: 100 to 100: 1, preferably from 1:10 to 10: 1.

Further, the present composition contains commonly used solvents, preservatives, excipients, stabilizers, potency enhancers, coloring agents, fragrances,
Other additives such as a builder may be appropriately contained.

The present composition is prepared by mixing, for example, a pesticidal active ingredient, a surfactant, talc and kaolin-based clay, and if necessary, other additives with a mixer such as a Nauta mixer, and adding water as appropriate. A kneaded product is prepared using a kneader such as a mortar, a Nauta mixer, or a kneader. The kneaded material is granulated by using an extrusion granulator such as a basket type extruder, a horizontal extruder, a twin dome gran, and the like to produce a granular material. Next, the granules are dried at room temperature to 150 ° C. using a drier such as a fluidized bed drier, whereby the present agent can be produced. The opening diameter of the screen used for granulation is usually about 0.3 to 2 mm, preferably 0.5 to 2 mm.
To 1.5 mm, more preferably 0.5 to 1 mm. The particle size of the obtained agent is usually 0.2 to 3 mm, preferably 0.3 to 2 mm, more preferably 0.3 to 1 mm.
It is.

The present agent is usually applied to crops after being diluted with water. The dilution ratio depends on the kind, content, application scene, etc. of the pesticidal active ingredient in the present agent, but is usually 10 to 10.
It is 10,000 times, preferably 50-4000 times, more preferably 500-2000 times.

[0019]

EXAMPLES Hereinafter, the present invention will be described in more detail with reference to Examples, Comparative Examples, and Test Examples, but the present invention is not limited thereto. Example 1 50 parts by weight of O-2,6-dichloro-4-methylphenyl O, O-dimethylphosphorothioate, 5-ethyl-
6. A copolymer of diisobutylene and maleic anhydride with 15 parts by weight of 5,8-dihydro-8-oxo [1,3] dioxolo [4,5-g] quinoline-7-carboxylic acid.
5 parts by weight, 1.5 parts by weight of lauryl sulfate and Fubasami M clay were added to make the whole to 90 parts by weight. After sufficiently stirring, the mixture was pulverized with a jet mill. To 90 parts by weight of the finely pulverized product, 10 parts by weight of talc (median diameter: 7.9 μm, angle of repose by injection angle method: 55 °) was added, and thoroughly mixed in a mortar. Then, 18 parts by weight of ion-exchanged water was added. And mixed. The mixture was granulated by a basket-type extrusion granulator equipped with a 0.8 mm diameter screen, dried at 60 ° C. for 10 minutes, and then sized to obtain a granular wettable powder having a particle size of 297 to 1000 μm. .

Comparative Example 1 Fubasami M clay was used in place of talc of Example 1, and after thoroughly mixing in a mortar, the amount of ion-exchanged water was 14.5.
An experiment was conducted in the same manner as in Example 1 except that the amount was changed to parts by weight, and a granular wettable powder having a particle size of 297 to 1000 µm was obtained.

Comparative Example 2 An experiment was carried out in the same manner as in Comparative Example 1 except that a basket-type extrusion granulator equipped with a 1.2 mm diameter screen was used to obtain a granular wettable powder having a particle size of 297 to 1500 μm. .

Test Example 1 The maximum power consumption during granulation in Example 1, Comparative Example 1 and Comparative Example 2 was measured using a dynamometer. The results are shown below.

[0023]

[Table 1]

[0024]

The water dispersible agricultural chemical granule of the present invention can reduce power consumption because the load on the granulator during granulation in the production of the granular wettable powder can be reduced.

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4H011 AA01 AB01 AC01 BA01 BA05 BB08 BB09 BB10 BB13 BB14 BB15 BB17 BB21 BC06 BC07 BC18 BC19 BC20 BC22 DA15 DC02 DC06 DC07 DC08 DG04 DG16 DH02 DH03 DH29

Claims (8)

[Claims] (1) A water dispersible granule characterized by containing an agricultural chemical active ingredient, a surfactant, talc and kaolin clay. 2. The ratio of talc to kaolin clay is 1:10.
The granular wettable powder according to claim 1, wherein the ratio is from 10 to 10. 3. The surfactant as claimed in claim 1, wherein the surfactant is a polycarboxylate, a formalin condensate of naphthalenesulfonic acid, a dialkylsuccisulfonate or a ligninsulfonate.
Or the granular wettable powder according to 2. 4. The granular wettable powder according to claim 1, wherein the surfactant is a polycarboxylate. 5. The granular wettable powder according to claim 1, wherein the surfactant is a copolymer of maleic acid and diisobutylene or a copolymer of maleic anhydride and diisobutylene. 6. The granular wettable powder according to claim 1, which is obtained by extrusion granulation. 7. A process for producing a water-dispersible granule, comprising extruding and granulating a kneaded product containing an agricultural chemical active ingredient, a surfactant, talc and kaolin-based clay. 8. The method according to claim 7, wherein a screen is used in the extrusion granulation, and the opening diameter of the screen is 0.3 to 2 mm.