JP2003286109A - Pesticide granules - Google Patents

Abstract

[57] [Abstract] [Problem] To be excellent in fluidity, can be easily mixed with other pesticide granules easily, and to prevent formulation deterioration such as solidification due to long-term storage of the formulation and poor elution of pesticides. Provided are coated pesticide granules that can be prevented. SOLUTION: (a) An inner core containing an agricultural chemical active ingredient,
(b) a coating layer covering the inner core, and (c) a pesticide granule composed of kaolin fine powder held on the surface of the coating layer, and an inner core containing a pesticide active ingredient. The method for producing pesticidal granules, which comprises adding a film-forming material or its raw material to form coated granules, and then mixing the coated granules with kaolin fine powder.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an improved agricultural chemical granule.

[0002]

2. Description of the Related Art Conventionally, resin coating (Japanese Patent Publication No. 60-44967, Japanese Patent Publication No. 64-4484, etc.) has been used to control the elution of agricultural chemicals and enhance the sustainability of efficacy. Coated pesticide granules are known.
However, since the coated pesticide granules generally have poor fluidity, it is difficult to uniformly disperse the granules when spraying the granules with a sprayer because it is difficult to discharge the granules from the sprayer with a constant flow,
Problems may easily occur during actual use, such as the risk of fluctuations in the effect due to uneven spraying, and the problem that it takes time to discharge granules and the workability during spraying deteriorates. Further, in the case of preparing a mixed preparation in which other pesticide granules are mixed, uniform mixing becomes extremely difficult, so that problems such as drug damage and insufficient efficacy due to uneven distribution of active ingredients in the preparation are likely to occur. Furthermore, when the coating layer is a resin, depending on the type of resin used, if the granules are stored for a relatively long period of time, the physical properties deteriorate due to the load, and as a result, the particles solidify and the formulation solidifies as a whole. However, there was a problem of formulation quality deterioration, such as poor elution of agricultural chemicals due to coating defects in the coating layer.

The object of the present invention is to solve the problems associated with coated pesticide granules, to have excellent fluidity, to allow easy uniform mixing with other pesticide granules, and to solidify the formulation after long-term storage. It is intended to provide a coated pesticide granule capable of preventing formulation deterioration such as binding and poor elution of pesticide.

[0004]

Under the circumstances, the present inventors have conducted extensive studies on coated pesticide granules, and as a result, found that the above problems can be solved by keeping kaolin fine powder on the surface of the coating layer. The present invention has been reached.

That is, the present invention provides (a) an inner core containing an agrochemical active ingredient, (b) a coating layer coating the inner core, and (c) a kaolin fine particle retained on the surface of the coating layer. A pesticide granules composed of powder (hereinafter referred to as the granules of the present invention), and a film-forming material or a raw material thereof is added to the inner core containing the pesticide active ingredient to form coated granules. The present invention relates to a method for producing the granule of the present invention, which comprises mixing the coated granules with a kaolin fine powder.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The granule of the present invention comprises particles having an inner core coated with a coating layer and kaolin fine powder having the surface thereof retained. The inner core in the present invention is a granular structure containing an agrochemical active ingredient, and the coating layer is a film-like structure that three-dimensionally surrounds the inner core. Further, each of the kaolin particles adheres to the surface of the coating layer, is usually dispersed, and is held in a state of covering most of the surface of the coating layer. The kaolin fine particles usually cover 5% or more, preferably 20% or more, more preferably 40% or more of the surface of the granule of the present invention, and are present while being retained by the adhesive action with the surface of the coating layer. There is.

The granule of the present invention is a granule containing particles composed of the inner core, the coating layer and the kaolin fine powder defined in the present invention, and may be composed of only the particles. Within the scope to reach the object of the invention, other agents are appropriately used depending on its use, for example, other agricultural chemical granules, granular fertilizers, granular soil, granular plant nutrients, granular plant regulation control agents, granular hormone agents, granular agricultural materials such as seeds. May be included. Unless otherwise specified, in the present specification, when the contents of the inner core, the coating layer, the agrochemical active ingredient, the kaolin fine powder, the film-forming material and the like are described, "content of ... in the granule of the present invention" or "The content of ... Is in the granule of the present invention" is a value expressed as the average of the content in the particles based on the average of the particles composed of the inner core, the coating layer and the kaolin fine powder defined in the present invention. Means

The content of the inner core in the granule of the present invention is usually 50 to 99.8% by weight, preferably 85 to 99.5% by weight. The inner core is a granular material containing an agrochemical active ingredient.

Examples of the agrochemical active ingredient used in the present invention include insecticides, fungicides, herbicides, insect growth regulators and plant growth regulators. Specific examples include the compounds shown below. You can

Fenitrothion [O, O-dimethyl O-
(3-Methyl-4-nitrophenyl) phosphorothioate], fenthion [O, O-dimethyl O- (3-methyl-4- (methylthio) phenyl) phosphorothioate], diazinon [O, O-diethyl-O-2-isopropyl] -6-Methylpyrimidin-4-ylphosphorothioate], chlorpyrifos [O, O-diethyl-O-
3,5,6-Trichloro-2-pyridylphosphorothioate], acephate [O, S-dimethylacetylphosphoramidothioate], methidathion [S-2,3-dihydro-5-methoxy-2-oxo-1,3,3. 4-thiadiazol-3-ylmethyl O, O-dimethyl phosphorodithioate], disulfoton [O, O-diethyl S-
2-Ethylthioethyl phosphorodithioate], DDV
P [2,2-dichlorovinyl dimethyl phosphate],
Sulprophos [O-ethyl O-4- (methylthio) phenyl S-propyl phosphorodithioate], cyanophos [O-4-cyanophenyl O, O-dimethylphosphorothioate], dioxabenzophos [2-methoxy-4H
-1,3,2-Benzodioxaphosphorin-2-sulfide], dimethoate [O, O-dimethyl-S- (N-
Methylcarbamoylmethyl) dithiophosphate], fentoate [ethyl 2-dimethoxyphosphinothioylthio (phenyl) acetate], malathion [diethyl (dimethoxyphosphinothioylthio) succinate], trichlorfon [dimethyl 2,2,2-trichloro- 1-hydroxyethylphosphonate], azinphos-methyl [S-3,4-dihydro-4-oxo-1,2,
3-benzotriazin-3-ylmethyl O, O-dimethyl phosphorodithioate], monocrotophos [dimethyl-{(E) -1-methyl-2- (methylcarbamoyl)]
Vinyl) phosphate], ethion [O, O, O ',
O′-tetraethyl-S, S′-methylenebis (phosphorodithioate)], and other organic phosphorus compounds,

BPMC [2-sec-butylphenylmethylcarbamate], benflacarb [ethyl N-
{2,3-dihydro-2,2-dimethylbenzofuran-
7-yloxycarbonyl (methyl) aminothio} -N
-Isopropyl-β-alaninate], propoxur [2-isopropoxyphenyl-N-methylcarbamate], carbosulfan [2,3-dihydro-2,2-
Dimethyl-7-benzo [b] furanyl N-dibutylaminothio-N-methylcarbamate], carbaryl [1
-Naphthyl-N-methylcarbamate], Mesomil [S
-Methyl-N- (methylcarbamoyloxy) thioacetimidate], ethiophencarb [2- (ethylthiomethyl) phenylmethylcarbamate], aldicarb [2-methyl-2- (methylthio) propionaldehyde O-methylcarbamoyloxime], Carbamate compounds such as oxamyl [N, N-dimethyl-2-methylcarbamoyloxyimino-2- (methylthio) acetamide], phenothiocarb [S-4-phenoxybutyl-N, N-dimethylthiocarbamate],

Etofenprox [2- (4-ethoxyphenyl) -2-methyl-1- (3-phenoxybenzyl) oxypropane], fenvalerate [(RS)
-Α-Cyano-3-phenoxybenzyl (RS) -2
-(4-chlorophenyl) -3-methylbutyrate],
Esfenvalerate [(S) -α-cyano-3-phenoxybenzyl (S) -2- (4-chlorophenyl)
-3-methylbutyrate], fenpropatorin [(R
S) -α-Cyano-3-phenoxybenzyl 2,2
3,3-Tetramethylcyclopropanecarboxylate], cypermethrin [(RS) -α-cyano-3-phenoxybenzyl (1RS) -cis, trans-3-
(2,2-Dichlorovinyl) -2,2-dimethylcyclopropanecarboxylate], permethrin [3-phenoxybenzyl (1RS) -cis, trans-3-
(2,2-Dichlorovinyl) -2,2-dimethylcyclopropanecarboxylate], cyhalothrin [(RS)
-Α-cyano-3-phenoxybenzyl (1RS, 3
Z) -cis-3- (2-chloro-3,3,3-trifluoroprop-1-enyl) -2,2-dimethylcyclopropanecarboxylate], deltamethrin [(S)-
α-Cyano-3-phenoxybenzyl (1R) -cis-3- (2,2-dibromovinyl) -2,2-dimethylcyclopropanecarboxylate], cycloprothrin [(RS) -α-cyano-3-] Phenoxybenzyl
(RS) -2,2-dichloro-1- (4-ethoxyphenyl) cyclopropanecarboxylate], fluvalinate [α-cyano-3-phenoxybenzyl N- (2
-Chloro-α, α, α-trifluoro-p-tolyl)-
D-valinate], bifenthrin [2-methyl-3-]
Phenylbenzyl (1RS, 3Z) -cis-3- (2
-Chloro-3,3,3-trifluoro-1-propenyl) -2,2-dimethylcyclopropanecarboxylate], halfenprox [2- (4-bromodifluoromethoxyphenyl) -2-methyl-1- ( 3-phenoxybenzyl) methylpropane], tralomethrin [(S) -α-cyano-3-phenoxybenzyl (1
R) -cis-3- (1,2,2,2-tetrabromoethyl) -2,2-dimethylcyclopropanecarboxylate], silafluofene [(4-ethoxyphenyl)-
{3- (4-Fluoro-3-phenoxyphenyl) propyl} dimethylsilane], d-phenothrin [3-phenoxybenzyl (1R) -cis, trans-2,2-
Dimethyl-3- (2-methyl-1-propenyl) cyclopropanecarboxylate], cyphenothrin [(R
S) -α-Cyano-3-phenoxybenzyl (1R)
-Cis, trans-2,2-dimethyl-3- (2-methyl-1-propenyl) cyclopropanecarboxylate], d-resmethrin [5-benzyl-3-furylmethyl (1R) -cis, trans-2, 2-dimethyl-
3- (2-Methyl-1-propenyl) cyclopropanecarboxylate], acrinathrin [(S) -α-cyano-3-phenoxybenzyl (1R, 3Z) -cis-
(2,2-dimethyl-3- {3-oxo-3- (1,
1,1,3,3,3-hexafluoropropyloxy)
Propenyl} cyclopropanecarboxylate], cyfluthrin [(RS) -α-cyano-4-fluoro-3-
Phenoxybenzyl 3- (2,2-dichlorovinyl)
-2,2-Dimethylcyclopropanecarboxylate], tefluthrin [2,3,5,6-tetrafluoro-4-methylbenzyl (1RS, 3Z) -cis-3-
(2-chloro-3,3,3-trifluoro-1-propenyl) -2,2-dimethylcyclopropanecarboxylate], transfluthrin [2,3,5,6-tetrafluorobenzyl (1R) -trans -3- (2,2
-Dichlorovinyl) -2,2-dimethylcyclopropanecarboxylate], tetramethrin [3,4,5,6
-Tetrahydrophthalimidomethyl (1RS) -cis, trans-2,2-dimethyl-3- (2-methyl-
1-propenyl) cyclopropanecarboxylate],
Alletrin [(RS) -2-methyl-4-oxo-3-
(2-Propenyl) -2-cyclopenten-1-yl
(1RS) -cis, trans-2,2-dimethyl-3-
(2-Methyl-1-propenyl) cyclopropanecarboxylate], pralethrin [(S) -2-methyl-4]
-Oxo-3- (2-propynyl) -2-cyclopenten-1-yl (1R) -cis, trans-2,2-dimethyl-3- (2-methyl-1-propenyl) cyclopropanecarboxylate] , Empentrin [(RS)
-1-ethynyl-2-methyl-2-pentenyl (1R)
-Cis, trans-2,2-dimethyl-3- (2-methyl-1-propenyl) cyclopropanecarboxylate], imiprothrin [2,5-dioxo-3- (2-
Propinyl) imidazolidin-1-ylmethyl (1
R) -cis, trans-2,2-dimethyl-3- (2-
Methyl-1-propenyl) cyclopropanecarboxylate], d-flamethrin [5- (2-propynyl) furfuryl (1R) -cis, trans-2,2-dimethyl-3- (2-methyl-1-pro) Penyl) cyclopropanecarboxylate], 5- (2-propynyl) furfuryl 2,2,3,3-tetramethylcyclopropanecarboxylate and other pyrethroid compounds,

Buprofezin [2-tert-butylimino-3-isopropyl-5-phenyl-1,3,5-
Thiadiazin-4-one] and other thiadiazine derivatives, nitroimidazolidine derivatives, cartap [S, S'-
(2-Dimethylaminotrimethylene) bis (thiocarbamate)], thiocyclam [N, N-dimethyl-1,
2,3-Trithian-5-ylamine], benzultap [S, S′-2-dimethylaminotrimethylene di (benzenethiosulfonate)], and other nereistoxin derivatives, N-cyano-N′-methyl-N N-cyanoamidine derivatives such as ′-(6-chloro-3-pyridylmethyl) acetamidine, endosulfan [6,7,8,9,
10,10-hexachloro-1,5,5a, 6,9,9
a-hexahydro-6,9-methano-2,4,3-benzodioxathiepine oxide], γ-BHC [1,
2,3,4,5,6-hexachlorocyclohexane],
Dicofol [1,1-bis (4-chlorophenyl) -2,
2,2-trichloroethanol] and other chlorinated hydrocarbon compounds, chlorfluazuron [1- {3,5-dichloro-
4- (3-chloro-5-trifluoromethylpyridine-
2-yloxy) phenyl} -3- (2,6-difluorobenzoyl) urea], teflubenzuron [1-
(3,5-dichloro-2,4-difluorophenyl)-
3- (2,6-difluorobenzoyl) urea], flufenoxuron [1- {4- (2-chloro-4-trifluoromethylphenoxy) -2-fluorophenyl}-
3- (2,6-difluorobenzoyl) urea] and other benzoylphenylurea compounds, amitraz [N,
N '-{(methylimino) dimethylidine} -di-2,4
-Xylidine], chlordimeform [N '-(4-chloro-2-methylphenyl) -N, N-dimethylmethinimidamide] and other formamidine derivatives, diafenthiuron [N- (2,6-diisopropyl-4 -Phenoxyphenyl) -N'-t-butylcarbodiimide] and the like, N-phenylpyrazole compounds,

Methoxadiazone [5-methoxy-3-
(2-Methoxyphenyl) -1,3,4-oxadiazol-2- (3H) -one], bromopropylate [isopropyl 4,4'-dibromobenzilate], tetradiphone [4-chlorophenyl 2,4. 5-trichlorophenyl sulfone], quinomethionate [S, S-6-
Methylquinoxaline-2,3-diyldithiocarbonate], propargite [2- (4-tert-butylphenoxy) cyclohexylprop-2-ylsulfite], fenbutatin oxide [bis {tris (2-
Methyl-2-phenylpropyl) tin} oxide],
Hexythiazox [(4RS, 5RS) -5- (4-chlorophenyl) -N-chlorohexyl-4-methyl-2
-Oxo-1,3-thiazolidine-3-carboxamide], clofentezin [3,6-bis (2-chlorophenyl) -1,2,4,5-tetrazine], pyridaben [2-tert-butyl-5- (4-tert-Butylbenzylthio) -4-chloropyridazine-3 (2H)-
On], fenpyroximate [tert-butyl
(E) -4-[(1,3-Dimethyl-5-phenoxypyrazol-4-yl) methyleneaminooxymethyl] benzoate], debufenpyrad [N-4-tert-
(Butylbenzyl) -4-chloro-3-ethyl-1-methyl-5-pyrazolecarboxamide], polynactin complex [tetranactin, dinactin, trinactin], pyrimidifen [5-chloro-N- [2- {4
-(2-Ethoxyethyl) -2,3-dimethylphenoxy} ethyl] -6-ethylpyrimidin-4-amine],
Milbemectin, Abamectin, Ivermectin, Azadirachtin [AZAD], 5-Methyl [1,2,4] triazolo [3,4-b] benzothiazole, Methyl 1
-(Butylcarbamoyl) benzimidazole-2-carbamate, 6- (3,5-dichloro-4-methylphenyl) -3 (2H) -pyridazinone, 1- (4-chlorophenoxy) -3,3-dimethyl-1 -(1H-1,
2,4-triazol-1-yl) butanone, (E)-
4-chloro-2- (trifluoromethyl) -N- [1-
(Imidazol-1-yl) -2-propoxyethylidene] aniline, 1- [N-propyl-N- [2- (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-1,2,2 4-
Triazol-1-yl) -1-penten-3-ol, 1- (2,4-dichlorophenyl) -4,4-dimethyl-2- (1H-1,2,4-triazol-1-yl) pentane- 3-ol, 4- [3- (4-tert-butylphenyl) -2-methylpropyl] -2,6-dimethylmorpholine, 2- (2,4-dichlorophenyl)-
1- (1H-1,2,4-triazol-1-yl) hexan-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-1,3,3
5-triazin-2-yl) aminocarbonyl] benzenesulfonamide, 2-methoxycarbonyl-N-
[(4,6-Dimethoxypyrimidin-2-yl) aminocarbonyl] benzenesulfonamide, 2-methoxycarbonyl-N-[(4,6-dimethylpyrimidin-2-
Ile) aminocarbonyl] benzenesulfonamide, 2
-Methoxycarbonyl-N-[(4-methoxy-6-methyl-1,3,5-triazin-2-yl) aminocarbonyl] benzenesulfonamide, 2-ethoxycarbonyl-N-[(4-chloro-6- Methoxypyrimidine-
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-dimethoxypyrimidin-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, 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-dimethylbutyramide, 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-thiazolcarboxamide, 2,2-
Dichloro-N- [1- (4-chlorophenyl) ethyl]
-3-Methylcyclopropanecarboxamide, methyl (E) -2-2-6- (2-cyanophenoxy) pyrimidin-4-yloxy-phenyl-3-methoxy acrylate, 5-methyl-1,2,4- Triazolo [3,4
-B] benzothiazole, 3-allyloxy-1,2-
Benzisothiazole-1,1-dioxide, diisopropyl = 1,3-dithiolane-2-ylidene-malonate, O, O-dipropyl-O-4-methylthiophenyl phosphate and the like.

The pesticidal active ingredient is contained in the particles consisting of the inner core defined in the present invention, the coating layer and the kaolin fine powder.
The species may be contained, or two or more species may be mixed and contained. The content of the agrochemical active ingredient in the granules of the present invention is usually 0.1 to 90% by weight, preferably 0.2 to 70% by weight. The pesticidal active ingredient may be dispersed throughout the inner core, or may be localized inside the inner core or on the surface of the inner core.

The inner core of the present invention comprises an agrochemical active ingredient, and if necessary, a solid carrier, a binder, a solvent,
You may add surfactant, a stabilizer, a coloring agent, etc.

Examples of the solid carrier which can be used in the present invention include mineral carriers, vegetable carriers, synthetic carriers and the like. Examples of the mineral carrier include kaolin minerals such as kaolinite, dickanite, nacrite, and halocite, talc, chrysotile, lizzite, anticolite, serpentine such as amethite, sodium montmorillonite, calcium montmorillonite, and smectites such as magnesium montmorillonite. , Saponite, hectorite, sauconite, hydelite and other smectites, pyrophyllite, muscovite, muscovite, fengite, mica such as sericite and illite, cristobalite, silica such as quartz, attapulgite, hydrous magnesium silicate such as sepiolite, Dolomite, calcium carbonate such as fine powder of calcium carbonate, sulfate minerals such as gypsum, gypsum, zeolite, zeolite, tuff, vermiculite, laponite, pumice, diatomaceous earth Acid clay, etc. activated clay and the like. Examples of the vegetable carrier include cellulose, rice husk, wheat flour, wood flour, starch, rice bran, bran, soybean flour and the like. Examples of the synthetic carrier include wet process silica, dry process silica, calcined products of wet process silica, surface-modified silica, modified starch (pine flow manufactured by Matsutani Chemical Co., Ltd.) and the like. These solid carriers are usually contained in the granule of the present invention in an amount of 0.5 to 99.8% by weight, preferably 25 to 99.5.
It is contained by weight%.

Examples of the binder that can be used in the present invention include acrylic polymers, vinyl polymers, synthetic polymers such as polyoxyalkylenes, and semi-synthetic polymers such as cellulose derivatives, modified starch and lignin derivatives. , Natural polymers and the like. As an acrylic polymer,
Examples thereof include sodium polyacrylate and sodium polymethacrylate, and examples of the vinyl-based polymer include polyvinyl alcohol, polyvinylpyrrolidone, and vinyl acetate copolymer. Examples of the polyoxyalkylene include polyoxyethylene and polyoxypropylene. Examples of the cellulose derivative include sodium carboxymethyl cellulose, dextrin, hydroxypropylmethyl cellulose, methyl cellulose, methyl ethyl cellulose, hydroxypropyl cellulose, and the like, and modified starch includes modified starch, carboxymethyl starch, soluble starch, and the like. Examples of the lignin derivative include sodium lignin sulfonate. Examples of natural polymers include polysaccharides such as gum arabic, xanthan gum, gum tragacanth, guar gum, carrageenan, alginic acid and sodium alginate, and proteins such as casein, casein lime, gelatin and collagen. When the binder is contained, its content is usually 0.1 to 10% by weight, preferably 0.5 to 5% by weight in the granules of the present invention.

As the surfactant which can be used in the present invention, for example, polyoxyethylene alkyl ether,
Polyoxyethylene alkylaryl ether, polyoxyethylene lanolin alcohol, polyoxyethylene alkylphenol formalin condensate, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene glyceryl monofatty acid ester, polyoxypropylene glycol monofatty acid ester, polyoxyethylene sorbitol fatty acid ester , Polyoxyethylene castor oil derivative, polyoxyethylene fatty acid ester, higher fatty acid glycerin ester, sorbitan fatty acid ester, sucrose fatty acid ester, polyoxyethylene polyoxypropylene block polymer, polyoxyethylene fatty acid amide, alkylolamide, polyoxyethylene Nonionic surfactants such as alkylamines; Alkys such as dodecylamine hydrochloride Cation such as amine quaternary ammonium salt, dodecyltrimethylammonium salt, alkyldimethylbenzylammonium salt, alkylpyridinium salt, alkylisoquinolinium salt, dialkylmorpholinium salt, quaternary ammonium salt, benzethonium chloride, polyalkylvinylpyridinium salt, etc. Surfactants; fatty acid sodium such as sodium palmitate, sodium ether carboxylate such as sodium polyoxyethylene lauryl ether carboxylate, amino acid condensate of higher fatty acid such as sodium lauroyl sarcosine, sodium N-lauroyl glutamate, higher alkyl sulfonic acid Dialkyl sulfokoha salt such as salt, higher fatty acid ester sulfonate such as lauric acid ester sulfonate, dioctyl sulfosuccinate Acid salt, higher fatty acid amide sulfonate such as oleic acid amide sulfonic acid, sodium dodecylbenzene sulfonate, alkyl aryl sulfonate such as diisopropyl naphthalene sulfonate, formalin condensate of alkyl aryl sulfonate, pentadecane-2-sulfate Higher alcohol sulfate ester salt, polyoxyethylene alkyl phosphate ester such as dipolyoxyethylene dodecyl ether phosphate ester, anionic surfactant such as styrene-maleic acid copolymer; N-lauryl alanine,
N, N, N-trimethylaminopropionic acid, N, N,
Examples thereof include amphoteric surfactants such as N-trihydroxyethylaminopropionic acid, N-hexyl N, N-dimethylaminoacetic acid, 1- (2-carboxyethyl) pyrimidinium betaine, and lecithin. When a surfactant is contained, its content is usually 0.1 to 40 in the granules of the present invention.
%, Preferably 0.1 to 10% by weight.

Examples of the solvent usable in the present invention include hexane, decane, tridecane, hexadecane,
Saturated aliphatic hydrocarbons such as octadecane, 1-undecene, unsaturated hydrocarbons such as 1-heneicosene, halogenated hydrocarbons such as SELECROLL S45 (ICI solvent), ketones such as methyl ethyl ketone and cyclohexanone, ethanol, butanol , Alcohols such as octanol, ethyl acetate, dimethyl phthalate, methyl laurate, ethyl palmitate, octyl acetate, dioctyl succinate, esters such as didecyl adipate, xylene, ethylbenzene, octadecylbenzene, Solvesso 100 (manufactured by Exxon Chemical Solvent), dodecylnaphthalene, tridecylnaphthalene, Solvesso 20
Alkylnaphthalene such as 0 (solvent manufactured by Exxon Chemical), glycols such as ethylene glycol and diethylene glycol, glycol ethers such as propylene glycol monomethyl ether and ethylene glycol monoethyl ether, fatty acids such as oleic acid, capric acid and enanthic acid , N, N-dimethylformamide,
Acid amides such as N, N-diethylformamide, olive oil, soybean oil, rapeseed oil, castor oil, linseed oil, cottonseed oil, palm oil, avocado oil, shark liver oil and other animal and vegetable oils,
Mineral oil such as machine oil, glycerin, glycerin derivatives such as glycerin fatty acid ester, and the like can be mentioned. When a solvent is contained, its content is usually 30 in the granules of the present invention.
It is not more than wt%, preferably 0.1 to 20 wt%.

Examples of the stabilizer that can be used in the present invention include phenol-based antioxidants, amine-based antioxidants, phosphorus-based antioxidants, sulfur-based antioxidants, ultraviolet absorbers, epoxidized soybean oil, Examples thereof include epoxidized linseed oil, epoxidized vegetable oil such as epoxidized rapeseed oil, isopropyl acid phosphate, liquid paraffin, and ethylene glycol. When the stabilizer is contained, its content is usually 0.01 to 10% by weight, preferably 0.01 to 5% by weight in the granules of the present invention.

Examples of the colorant that can be used in the present invention include rhodamines such as rhodamine B and solar rhodamine, and dyes such as yellow No. 4, blue No. 1 and red No. 2 and the like. , Ethyl acetoacetate, ethyl enanthate, ethyl cinnamate, ester-based fragrances such as isoamyl acetate, organic acid-based fragrances such as caproic acid and cinnamic acid, cinnamic alcohol, geraniol, citral,
Alcohol-based flavors such as decyl alcohol, aldehydes such as vanillin, piperonal and perylaldehyde, maltitol, ketone-based flavors such as methyl β-naphthyl ketone,
Examples include menthol. When the colorant and the fragrance are contained, the content thereof is usually 0.
It is from 01 to 5% by weight.

The inner core of the granules of the present invention can be obtained by granulating, for example, by a granulating method usually used in the formulation of pesticides. Although the granulation method is not particularly limited, for example, extrusion granulation method, impregnation granulation method, compression granulation method, stirring granulation method, fluidized bed granulation method, fluidized bed granulation method,
The rolling granulation method, the coating granulation method, etc. can be mentioned. An example of producing the inner core by the extrusion granulation method is shown below.

A mixture is prepared by mixing the agricultural chemical active ingredient and the solid carrier, and if necessary, a binder, a solvent, a surfactant, a stabilizer, a coloring agent, a fragrance and the like. Examples of the mixer used at this time include a ribbon mixer, a Nauter mixer, a Sugi mixer, a Henschel mixer, and a Loedige mixer. Next, water is dripped, sprayed or sprayed on the mixture and kneaded to prepare a kneaded product. Examples of the kneader used in this case include a Nauta mixer, a ribbon mixer, a Henschel mixer, and a kneader. The amount of water used at the time of kneading is usually 5 to 35% by weight, preferably 10 to
It is 25% by weight. Next, the kneaded material is granulated using a granulator. As the granulator used at this time,
For example, basket type granulators, screw type granulators, extrusion granulators such as pelletizers, compression granulators such as roller compactors, agitation granulators such as Henschel mixers and Nauta mixers, and rolling granulators such as pan granulators. And a fluidized bed granulator. The inner core of the present invention can be obtained by subjecting the obtained granulated product to usual drying, sizing, and sieving treatments. Examples of the dryer used at this time include a fluidized bed dryer and a bed dryer. Examples of the sizing machine include a marumerizer, a pin mill, and a crusher.
Examples of the sieving machine include a gyro shifter and an electromagnetic vibration type sieving machine. The average particle size of the inner core thus produced is generally about 0.1 to 10 mm, preferably about 0.3 to 5 mm. The particle diameter in the present invention means the maximum diameter of the inner core.

The content of the coating layer in the granules of the present invention is usually 0.1 to 49% by weight, preferably 0.2 to 15% by weight. The coating layer is mainly composed of a film-forming material, and if necessary, a solid carrier, a surfactant, a solvent, a stabilizer,
Colorants, fragrances, etc. are contained.

Examples of the film forming material include wax, thermoplastic resin, thermosetting resin, sulfur and the like.

Examples of the waxes include synthetic waxes such as carbowax, hex-straw, sucrose ester and fatty acid ester, natural waxes such as carnauba wax, beeswax and tree wax, paraffin wax and petroleum wax such as petrolactam. .

Examples of the thermoplastic resin include polyolefins such as polyethylene, polypropylene, polybutene and polystyrene, polyvinyl acetate, polyvinyl chloride,
Polyvinylidene chloride, polyacrylic acid, polymethacrylic acid, polyacrylic acid ester, vinyl methacrylate such as polymethacrylic acid ester, butadiene polymer, isoprene polymer, chloroprene polymer, butadiene-styrene copolymer, ethylene-propylene -Diene copolymers, diene-based polymers such as styrene-isoprene copolymers, ethylene-propylene copolymers, butene-ethylene copolymers, butene-propylene copolymers, ethylene-vinyl acetate copolymers, ethylene- Polyolefin copolymer such as acrylic acid copolymer, ethylene-methacrylic acid copolymer, ethylene-methacrylic acid ester copolymer, ethylene-carbon monoxide copolymer, ethylene-vinyl acetate-carbon monoxide copolymer Products, vinyl chloride-vinyl acetate copolymers, vinyl chloride Down - and vinyl copolymers chloride such as vinyl chloride copolymer is.

Examples of the thermosetting resin include urethane resin, epoxy resin, alkyd resin, unsaturated polyester resin, phenol resin, urea / melamine resin, urea resin and silicone resin.

The urethane resin is produced by reacting a polyisocyanate and a polyol in the presence of a curing agent such as an organic metal or amine. As the curing agent,
Organic metals such as dibutyltin diacetate, dibutyltin dichloride, dibutyltin dilaurate, dibutylthiostannic acid, stannous octylate, di-n-octyltin dilaurate, triethylenediamine, N-methylmorpholine,
N, N-dimethyldidodecylamine, N-dodecylmorpholine, N, N-dimethylcyclohexylamine, N-
Ethylmorpholine, dimethylethanolamine, N, N
-Dimethylbenzylamine, 1,8-diazabicyclo [5.4.0] undec-7-ene, isopropyl titanate, tetrabutyl titanate, oxyisopropyl vanadate, n-propyl zirconate, 1,4-diazabicyclo [2.2] .2] Octane and the like.

Polyisocyanate and polyol, which are the monomers of the urethane resin, are used in the form of a monomer alone, a solution, an aqueous emulsion, an organic solvent emulsion or the like.

Examples of the polyisocyanate include toluene diisocyanate (TDI), diphenylmethane diisocyanate (MDI), naphthalene diisocyanate, tolylene diisocyanate, hexamethylene diisocyanate, isophorone diisocyanate, xylylene diisocyanate, 4,4-methylenebis (cyclohexyl isocyanate), Trimethylhexamethylene diisocyanate, 1,3- (isocyanatomethyl) cyclohexane, triphenylmethane triisocyanate, tris (isocyanatophenyl) thiophosphate and the like can be mentioned, and the polyisocyanate is 2
It may be a mixture of two or more species. Further, instead of the polyisocyanate, a modified product of the polyisocyanate or an oligomer of the polyisocyanate can be used.
Examples of the modified product include an adduct modified product, a biuret modified product, an isocyanurate modified product, a block modified product, a prepolymer modified product, and a dimerized modified product.

As the polyol, a condensation type polyester polyol, a polyether polyol, a polyacrylic acid polyol, a lactone type polyester polyol, a polycarbonate polyol, a natural polyol, or a modified product of the polyol is used.

The condensed polyester polyol is usually
A polyether polyol is usually obtained by a polymerization reaction of a cyclic oxide by a condensation reaction of a polyol and a dibasic acid. Poly (meth) acrylic acid polyol is
Usually, it is obtained by a condensation reaction of poly (meth) acrylic acid and a polyol, a condensation reaction of (meth) acrylic acid and a polyol, or a polymerization reaction of a (meth) acrylic acid ester monomer. The lactone polyester polyol is usually obtained by ring-opening polymerization of ε-caprolactam using a polyhydric alcohol as an initiator. Polycarbonate polyol is obtained by the reaction of a polyol and a carbonate such as diphenyl carbonate, and as the polyol used at this time, methylene glycol, ethylene glycol, propylene glycol, tetramethylene glycol, hexamethylene diol, trimethylol propane, polymethyene are usually used. Tetramethylene glycol, glycerin, pentaerythritol, sorbitol, sucrose, etc.
Or these oligomers etc. are mentioned. As the dibasic acid, adipic acid, phthalic acid and the like can be usually mentioned.

Such polyols are commercially available, for example, Sumiphen 3086, Sumiphen 3900, Sumiphen 5200, Sumiphen TS, Sumiphen TM, Sumiphen VN, SBU polyol 0248, SBU polyol 0363, SBU polyol 0474, SBU polyol 480J, SBU polyol 0480. , SB
U polyol 0485, SBU polyol 0487,
SBU polyol 0248, SBU polyol 036
3, SBU polyol 0262, Desmophen 550
U, Desmophen 900U, Desmophen 1600U,
Desmophen 1900U (all are trade names of Sumitomo Bayer Urethane Co., Ltd.) and the like.

Epoxy resins include the reaction of phenols or alcohols with epichlorohydrin in the presence of a curing agent, the reaction of carboxylic acids with epichlorohydrin in the presence of a curing agent, amines in the presence of a curing agent, It is produced by the reaction of cyanuric acid or hydantoin with epichlorohydrin, the reaction of an aliphatic cyclic epoxy compound in the presence of a curing agent such as peracetic acid, and the like.

Examples of the curing agent include diethylenetriamine, triethylenetetramine, metaxylylenediamine, isophoronediamine, 1,3-bisaminomethylcyclohexane, diaminodiphenylmethane, 1,3-bisaminomethylcyclohexane, diaminodiphenylmethane, m-phenylene. Diamine, diaminodiphenyl sulfone, disisandiamide, organic acid dihydrazide, polyamide modified polyamine, ketone modified polyamine, epoxy modified polyamine, thiourea modified polyamine, Mannich modified polyamine, Michael addition modified polyamine, dodecenyl succinic anhydride, polyazelaic anhydride, hexahydro Phthalic anhydride, methyltetrahydrophthalic anhydride, methylnadic acid anhydride, trimetic acid anhydride, pyromellitic acid anhydride, benzof Non-tetracarboxylic acid, tetrabromophthalic anhydride, het anhydride, novolac type polyphenol, polymercaptan, polyisocyanate, carboxylic acid-containing polyester resin, benzyldimethylaniline, 2,4,6-trisdimethylaminomethylphenol, 2-methylimidazole 2-ethyl, 4
-Methyl-imidazole, 2-heptadecyl imidazole, aromatic sulfonium salt, aromatic diazonium salt, resol type phenol resin, methylol group-containing urea resin,
Examples thereof include methylol group-containing melamine resin.

The epoxy resin is bisphenol A.
Type, bisphenol F type, brominated bisphenol A type,
Hydrogenated bisphenol A type, bisphenol S type, bisphenol AF type, biphenyl type, naphthalene type, fluorein type, phenol novolac type, orthocresol novolac type, DPP novolac type, trishydroxyphenylmethane type, tetraphenylolethane type, etc. Glycidyl ether type epoxy resin, tetraglycidyl diaminodiphenylmethane type, triglycidyl isocyanurate type, hydantoin type, aminophenol type, aniline type, toluidine type and other glycidyl amine type epoxy resin, glycidyl amine type epoxy resin, alicyclic epoxy resin, etc. Is mentioned.

The alkyd resin is produced by the reaction of a polybasic acid and a polyhydric alcohol in the presence of a modifying agent such as natural vegetable oil or animal fat, a metal soap and an antiskinning agent, if necessary.

Examples of the polybasic acid include phthalic anhydride and maleic anhydride, and examples of the polyhydric alcohol include:
Examples include pentaerythritol and glycerin. Examples of the modifier include soybean oil, linseed oil, tung oil, safflower oil, coconut oil, palm oil, dehydrated castor oil, and the like, and the metal soap is usually manganese, cobalt,
Examples thereof include naphthenes such as zirconium, nickel, iron and lead, or octyl acids, such as zirconium octylate, manganese naphthenate, cobalt octylate and the like, or a mixture thereof. Examples of the skin tension preventing agent include dipentene, methoxyphenol, cyclohexanone oxime, methyl ethyl ketone oxime, and the like, or a mixture thereof.

The unsaturated polyester resin is produced by reacting an unsaturated dibasic acid with a dihydric alcohol in the presence of a vinyl monomer.

As the unsaturated dibasic acid, phthalic anhydride, isophthalic acid, terephthalic acid, succinic acid, adipic acid, azelaic acid, sebacic acid, tetrahydrophthalic anhydride, hexahydrophthalic anhydride, tetrabromophthalic anhydride, tetra Chlorophthalic anhydride, hettic anhydride, endomethylene tetrahydrophthalic anhydride and the like,
As the dihydric alcohol, ethylene glycol, propylene glycol, 1,3-butylene glycol, 1,
6-hexanediol, diethylene glycol, dipropylene glycol, neopentyl glycol, triethylene glycol, hydrogenated bisphenol A, bisphenol dihydroxypropyl ether and the like can be mentioned.

Examples of the vinyl monomer include styrene, vinyltoluene, chlorostyrene, diallyl phthalate, triallyl cyanurate and methyl methacrylate.

Phenolic resins are produced by reacting phenols and aldehydes in the presence of a catalyst such as hydrochloric acid, oxalic acid or hexamethylenetetramine.

The phenols include phenol, o
-Cresol, m-cresol, p-cresol, xylenol, p-tert-butylphenol, resorcinol and the like. By this reaction, a novolac type phenol resin is obtained under an acidic catalyst and a resol type phenol resin is obtained under a basic catalyst.

The urea-melamine resin is produced by the reaction of urea or melamine with formalin in the presence of a basic catalyst.

The silicone resin is produced by the reaction of silicon with a polyfunctional siloxane in the presence of a catalyst.

As the film-forming material used for the coating layer in the present invention, thermosetting resins such as polyurethane resin and epoxy resin are preferable from the viewpoint of easiness of handling of monomers and curing reaction conditions. Is more preferable.

A solid carrier which may be contained in the coating layer,
As the surfactant, the stabilizer, the colorant, and the fragrance, those mentioned in the section of the inner core can be similarly mentioned.

In the granules of the present invention, a film-forming material or a raw material thereof is added to the inner core to form coated granules having the inner core covered with a coating layer, and then the coated granules and kaolin fine powder are mixed. Can be obtained by

As a method for coating the inner core with the coating layer, for example, the film-forming material is dissolved or dispersed in a solvent, and the solution is added to the inner core which is moving in a rotating pan, a rotating drum, a fluidized bed, a fluidized bed or the like. Meanwhile, a method of forming a coating layer by drying with hot air at the same time and growing it to cover it to a predetermined coating rate (coating drying method), a raw material of the film forming material, a rotary pan,
While adding to the inner core moving with a rotating drum, stirring mixer, etc., while heating or cooling as needed, add a catalyst as needed and cure the raw material of the film-forming material to form a coating layer. -A method of growing and coating up to a predetermined coverage (coating hardening method) and the like can be mentioned. Of these coating methods, generally, a coating drying method is often used when coating a thermoplastic resin, and a coating curing method is often used when coating a thermosetting resin. For coating with wax or sulfur, both a coating drying method and a coating curing method are applied. In addition, when a large amount of the film-forming material is added to the inner core in motion at the time of coating the inner core, the film-forming material tends to be spinnable in the process of forming the coating layer, and the inner core tends to be aggregated into a lump. Therefore, it is preferable to intermittently add the film-forming material in small units.

As a method for holding the kaolin fine powder on the coated granular material having the inner core coated with the coating layer, for example,
An example is a method in which fine kaolin powder is added to and mixed with the coated granules moving in a rotating pan, a rotating drum, a fluidized bed, a fluidized bed, or the like.

Among these mixing methods, as a suitable method for efficiently holding the added fine powder of kaolin on the coated granules, a method using a rotating pan or a rotating drum can be particularly mentioned. As the process conditions for holding the kaolin fine powder, the conditions set in general pharmaceutical processing can be widely applied. For example, the temperature is 0
It can be carried out at 120 ° C., preferably 20 to 90 ° C., but if it is carried out in the range from the softening temperature of the coating layer to a temperature 20 ° C. higher than the temperature, the adhesion of the kaolin fine powder becomes the strongest, and It is particularly preferable because a relatively large amount of kaolin fine powder can be retained. From the viewpoint of the retention efficiency of the kaolin fine powder on the surface of the coating layer and the prevention of peeling of the kaolin fine powder once held, the mixing time is usually about 0.5 to 20 minutes after the addition of the kaolin fine powder, preferably 1 to
It is about 10 minutes, the number of rotations at the time of mixing is the type of mixer,
Although it depends on the scale, it is usually 3 to 50 rpm, preferably 3 to 20 rpm.

After forming the coated granular material in which the above-mentioned inner core is coated with the coating layer, usually, the kaolin fine powder is continuously added and mixed under the condition that the stirring conditions, temperature, etc. are continued as they are. It is preferable and easy to do so.

The kaolin fine powder used in the granules of the present invention is a dioctahedral 1: 1 silicate, as shown in Clay Handbook (1987, edited by The Clay Society of Japan, published by Gihodo). Represents kaolin minerals such as kaolinite, dickanite, nacrite and halosite.
Usually, kaolin minerals are crystals of inorganic compounds mainly composed of silicon oxide and aluminum oxide, and among these, kaolinite is preferably used. As the kaolin fine powder used in the granules of the present invention, those having an average particle diameter of 30 μm or less, preferably 15 μm or less, more preferably 5 μm or less are used, and the lower limit thereof is usually 0.01 μm for practical use. That is all. In addition, the average particle diameter in the present invention represents a volume median diameter, and the volume median diameter can be usually measured using a laser type particle diameter measuring device.

The kaolin fine powder is generally contained in the granule of the present invention in an amount of 0.01 to 3% by weight, preferably 0.05 to 1.5% by weight.

The average particle size of the granules of the present invention is generally 0.1.
It is about 10 mm, preferably about 0.3-5 mm. Further, the shape of the granules of the present invention is usually a cube, a rectangular parallelepiped, a triangular pyramid, a cone, a cylinder, a sphere, a dumbbell, an ellipsoid, an egg, a convex lens, a concave lens, a plate, and the like. Of these, a cylindrical shape, a spherical shape, and an oval shape are particularly preferable.

The number of particles per 1 g of the granules of the present invention is usually 50 to 5000, preferably 200 to 3000, and the apparent specific gravity of the granules of the present invention is usually 0.3 to 1.5 g /
cc, preferably 0.7 to 1.2 g / cc. The apparent specific gravity of the granules of the present invention can be measured by the whole farming method.

The granules of the present invention include, for example, paddy fields, dry fields, nursery boxes, upland fields, orchards, mulberry fields, greenhouses, open fields, and other agricultural lands, forests, lawns, depending on the pesticide active ingredient species and purpose of use. It can be used in golf courses, roadside trees, roads, shoulders, non-agricultural lands such as wetlands, ponds, reservoirs, rivers, waterways, and water systems such as sewers.

The granules of the present invention can be applied by a method in which pesticide granules are generally applied. For example, a method of directly spraying by hands, a backpack type granulator, a pipe granulator, an aerial granule Examples thereof include a granulator, a power granulator, a seedling box granulator, a tractor-mounted granulator, a multi-mouth hose granulator, and a rice transplanter equipped with a granulator.

When applying the granules of the present invention, it is preferable to use the granules of the present invention where the sustained-release performance of the granules of the present invention can be utilized.
For example, application in nursery boxes, application during rice transplanting, application during nursery, application during seeding, application during germination, application such as application before pesticide is usually suitable from the viewpoint of the characteristics of the granules of the present invention. .

When the granules of the present invention are used in a nursery box, the amount of application is such that the nursery box (usually an area of 0.16 m ²
Approximately 10 to 200 g, preferably 2 per sheet
The amount is 5 to 100 g, and examples of the application method at that time include a method of directly applying by hand and a method of applying using a granulator for a nursery box.

When the granules of the present invention are used in paddy fields or upland fields, the application rate is usually about 10 are.
1 to 10 kg, preferably 0.25 to 5 kg, and the application method at that time is as follows: direct spraying by hand, backpack type granulator, pipe granulator, aerial granulator, multi-mouth hose granulator Examples thereof include a method using a granulator, a rice transplanter equipped with a granulator, and a tiller equipped with a granulator.

[0064]

EXAMPLES Next, the present invention will be specifically described with reference to Examples and Test Examples.

Example 1 (1) N- (1,1,3-trimethyl-2-oxa-4
-Indanyl) -5-chloro-1,3-dimethylpyrazole-4-carboxamide 4 parts by weight and 0.8 parts by weight of silicon dioxide hydrate were thoroughly mixed with a juice mixer,
It was crushed with a pin mill. The average particle size of the obtained pulverized product was 6.4 μm (measured value by Coulter Counter TA-II). 4.8 parts by weight of the pulverized product obtained above, 3 parts by weight of polyvinyl alcohol, 20 parts by weight of montmorillonite fine powder (trade name: bentonite Fuji, manufactured by Hojun Co.), 2 parts by weight of sodium dodecylbenzenesulfonate and calcium carbonate powder (average) Particle size 14.8 μm) 5
5.2 parts by weight were mixed well with a juice mixer to obtain a powder mixture. To the powder mixture, 7.5 parts by weight of urea and 15 parts by weight of water in which 7.5 parts by weight of granulated sugar were dissolved were added and kneaded well. The obtained kneaded product was granulated by a small-sized extrusion granulator with a screen of 0.9 mmφ and sized, and then 6
After drying for 15 minutes at 0 ° C, it has a cylindrical shape (particle size: 1400 to 85
An inner core having a diameter of 0 μm and an average cross-sectional diameter of 0.9 mmφ was obtained. (2) While rotating 1000 parts by weight of the obtained inner core in a temperature-controllable tilting pan type rolling granulator equipped with a hot air generator and maintaining the temperature at 80 ° C., a polymeric MDI (diphenylmethane diisocyanate) 37. 6% by weight, branched polyether polyol 33.2% by weight, linear polyether polyol 28.2% by weight and 2,4,6-tris (dimethylaminomethyl) phenol 1.0% by weight.
5 parts by weight of the mixture (hereinafter referred to as the mixture A) was added, and the mixture was kept at 80 ° C. for 5 minutes. The addition of 5 g of the mixture A and the operation of keeping at 80 ° C. for 5 minutes were repeated 12 times, and then the mixture was kept at 80 ° C. for 10 minutes to obtain a coated agricultural chemical granule. Subsequently, 0.1 part by weight of kaolinite fine powder (average particle size: 12 microns) was added while mixing the coated pesticide granules at 80 ° C., and further mixed for 5 minutes to obtain the granules (1) of the present invention.

Example 2 The same experiment as in Example 1 was carried out except that the amount of the kaolinite fine powder was changed to 0.3 part by weight to obtain the granule (2) of the present invention.

Example 3 The same experiment as in Example 1 was carried out except that the amount of the kaolinite fine powder was changed to 0.5 part by weight to obtain the granule (3) of the present invention.

Example 4 The same experiment as in Example 1 was carried out except that the amount of the kaolinite fine powder was changed to 1 part by weight to obtain the granule (4) of the present invention.

Example 5 The same experiment as in Example 1 was carried out except that the amount of the kaolinite fine powder was changed to 1.5 parts by weight to obtain the granule (5) of the present invention.

Example 6 The same experiment as in Example 1 was carried out except that the amount of the fine powder of kaolinite was changed to 2 parts by weight to obtain the granule (5) of the present invention.

Example 7 The same experiment as in Example 1 was carried out except that the amount of the kaolinite fine powder was 2.5 parts by weight to obtain the granule (5) of the present invention.

Example 8 The same experiment as in Example 1 was carried out except that the amount of the fine powder of kaolinite was changed to 4 parts by weight to obtain the granule (8) of the present invention.

Example 9 The same experiment as in Example 1 was carried out except that the amount of the fine powder of kaolinite was changed to 3 parts by weight to obtain the granule (9) of the present invention.

Example 10 The same experiment as in Example 1 was carried out except that the amount of the kaolinite fine powder was changed to 5 parts by weight to obtain the granule (10) of the present invention.

Example 11 The same experiment as in Example 1 was carried out except that kaolinite fine powder (average particle diameter 2 micron) was used in place of kaolinite fine powder (average particle diameter 12 micron), and the particles of the present invention were used. Agent
I got (11).

Example 12 The same experiment as in Example 11 was carried out except that the amount of the fine powder of kaolinite was changed to 0.2 part by weight to obtain the granule (12) of the present invention.

Example 13 The same experiment as in Example 11 was carried out except that the amount of the kaolinite fine powder was changed to 0.3 part by weight to obtain the granule (13) of the present invention.

Example 14 The same experiment as in Example 11 was carried out except that the amount of the kaolinite fine powder was changed to 1 part by weight to obtain the granule (14) of the present invention.

Comparative Example 1 Comparative granules (1) were obtained by conducting the same experiment as in Example 1 except that the kaolinite fine powder was not used.

Reference Production Example 2 parts by weight of polyvinyl alcohol, montmorillonite fine powder (trade name: bentonite Fuji, manufactured by Hojun Co.) 20
Parts by weight, 2 parts by weight of sodium dodecylbenzenesulfonate and calcium carbonate powder (average particle size 14.8 μm)
76 parts by weight were mixed well with a juice mixer to obtain a powder mixture. 20 parts by weight of water was added to the powder mixture and kneaded well. The obtained kneaded product was granulated by a small-sized extrusion granulator with a screen of 0.9 mmφ and sized, and then 60
The granules for compounding having a particle size of 1400 to 850 µm were obtained by drying at 15 ° C for 15 minutes. The obtained granules for compounding are columnar,
The diameter of the cross section was 0.9 mmφ.

Test Example 1 (Caking Property Test) 100 g of the sample shown in Table 1 was placed in a metal cylindrical container having an inner diameter of 50 mm and a 10 kg weight was placed thereon. This sample was kept in a high temperature device at 40 ° C. for 1 week, taken out, and left at room temperature for 1 day. After removing the weight, the solidified state of the contents was observed. The results are shown in Table 1.

[0082]

[Table 1]

Test Example 2 (fluidity test) 100 g of the sample shown in Table 2 was passed through a metallic funnel, and the fluidity was evaluated by the ease with which the sample passed through the funnel. The results are shown in Table 2.

[0084]

[Table 2]

Test Example 3 (Compounding Uniformity Test) 500 g of the sample shown in Table 3 and 500 g of the blending granule obtained in the Reference Production Example were mixed by a cascade mixer to prepare a blending granule. 50 g of each of the obtained mixed granules of 1,000 g was sampled from two places in each of the upper and lower parts of the bag, and six places in total, and N- (1,1,3-trimethyl-2-oxa-4-indanyl) in each sample was sampled. ) -5-Chloro-1,3
The content of dimethylpyrazole-4-carboxamide (hereinafter referred to as the active ingredient) was determined by liquid chromatography, and the uniformity of blending was evaluated by the coefficient of variation of the content of the active ingredient in the 6 samples. The coefficient of variation was calculated as the standard deviation of the content of the active ingredient obtained from the samples at the six locations divided by the average value of the content of the active ingredient. The results are shown in Table 3.

[0086]

[Table 3]

[0087]

EFFECTS OF THE INVENTION According to the present invention, the fluidity is excellent, uniform mixing with other pesticide granules can be easily carried out, and the formulation is hardened due to severe storage conditions, poor elution of pesticides, etc. It is possible to provide a coated agricultural chemical granule capable of preventing the deterioration of the formulation.

Claims (5)

[Claims] 1. An inner core comprising (a) an agrochemical active ingredient, (b)
A pesticide granule comprising a coating layer formed by coating the inner core and (c) a kaolin fine powder held on the surface of the coating layer. 2. The pesticide granule according to claim 1, wherein the coating layer is a layer made of a thermosetting resin. 3. The kaolin fine powder has an average particle diameter of 0.01 to.
The pesticide granule according to claim 1 or 2, which has a size of 15 microns or less. 4. The kaolin fine powder has an average particle diameter of 0.01 to.
The pesticide granule according to claim 1 or 2, which has a size of 5 microns or less. 5. A coating particle is formed by adding a film-forming material or a raw material thereof to an inner core containing an agrochemical active ingredient, and then the coating particle and kaolin fine powder are mixed. An agrochemical comprising (a) an inner core containing an agrochemical active ingredient, (b) a coating layer coating the inner core, and (c) a kaolin fine powder retained on the surface of the coating layer. Granule manufacturing method.