JP2001017847A - Production of granular agricultural-chemical composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for producing a granular agricultural chemicals composition having excellent mixture homogenity. SOLUTION: A granular agricultural-chemical composition is produced by mixing particle groups comprising two or more different kinds of particles containing agricultural-chemicals by the method comprising a horizontal mixing step of moving the position of particle groups in horizontal directions in a reduction vessel 1 to carry out whole convection-mixing, a vertical mixing step of moving the position of the particle groups in vertical directions in a dynamic mixer 2 to carry out whole vertical mixing and a micro mixing process of causing slide and collision between the particles in a static mixer 3 to carryout local diffusion mixing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a particulate pesticidal composition by mixing particles consisting of two or more different pesticide-containing particles.

[0002]

2. Description of the Related Art When simultaneously applying pesticidal active ingredients having different medicinal effects, the purpose is to reduce the application of spraying and to enhance the efficacy.
A method of blending a plurality of pesticidal active ingredients in the same core of a granule has been performed. However, when the application time of the pesticidal active ingredient is different or when the pesticidal active ingredient to be mixed is contraindicated in mixing, etc., when these pesticidal active ingredients are blended in the same core, the intended medicinal effect is not exhibited, and The control effect could not be obtained.

In order to solve such a problem, a method has been considered in which a plurality of cores containing individual pesticidal active ingredients are prepared in advance, and these are mixed. For example,
Japanese Patent Publication No. Hei 8-509485 discloses a method for preparing a wettable powder in which two kinds of granules containing a single pesticidal active ingredient are prepared and then mixed. Further, in the field of fertilizer, a method of fertilizing a mixture of particles containing different fertilizer components has been widely used.

[0004] However, in application of pesticides, from the viewpoint of the above-mentioned medicinal properties and phytotoxicity, uniformity much higher than the mixing uniformity required in the field of fertilizers is required. And, when mixing and applying granules containing individual pesticide active ingredients, if the mixing uniformity of the particles is poor, insufficient efficacy may occur at some application sites, or conversely, phytotoxicity may occur. In some cases, products with sufficient practical effects cannot be provided.

Japanese Utility Model Application Laid-Open No. 53-90274 discloses an apparatus for mixing a plurality of types of powder or flakes, as shown in FIG. Are disposed above and below.

In the mixing apparatus, the reducing tank 101
Horizontally mixes a predetermined amount of the particle groups α and β placed on the preparation table 103. Here, the horizontal mixing is defined as
3. In the particle groups α and β completely separated on 3, the particles are mixed by moving horizontally a particle group corresponding to about の of each of the particle groups α and β in the horizontal direction. It is.

The particle groups α and β that have passed through the reduction tank 101
Is then further mixed by the static mixer 102.

[0008] The static mixer 102 includes a mixing section 102a.
And the flow dividing portion 102b are alternately arranged, and by repeating the dispersion / aggregation of the particles during passage therethrough, micro mixing between the particles is performed. That is, the mixing performed in the static mixer 102 is mainly local mixing (micro mixing).

[0009]

However, in the above-described conventional configuration, the mixing in the reduction tank 101 is horizontal mixing, and the mixing in the static mixer 102 is micro mixing. Not enough. For this reason, when the product obtained by the conventional mixing method described above is applied, the mixing uniformity of the particles is poor, and there is a case where insufficient efficacy may occur at some application sites or conversely, phytotoxicity may occur. Problems arise.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a method for producing a granular pesticidal composition having excellent mixing uniformity.

[0011]

According to a first aspect of the present invention, there is provided a method for producing a granular pesticide composition, comprising mixing two or more different kinds of pesticide-containing particles. In the method for producing a composition, a horizontal mixing step of moving the position of the particle group in the horizontal direction to perform overall convection mixing, and performing a general convection mixing by moving the position of the particle group in the vertical direction It is characterized by including a vertical mixing step and a micro mixing step of performing local diffusion mixing by sliding and collision between particles.

According to the above arrangement, the horizontal mixing step and the vertical mixing step can enhance the mixing property of the particle groups in all directions, and can enhance the particle diffusibility in the micro mixing step. Therefore, by performing the above three steps, a granular pesticidal composition having excellent mixing uniformity can be obtained. The different pesticide-containing particles here are, for example, particles having different types of constituent components or different contents of the constituent components.

[0013] The method for producing a granular pesticidal composition according to claim 2 comprises:
In addition to the configuration of the first aspect, the micro-mixing step is performed as a final step.

The mixing mechanism of solid particles includes general mixing that causes mixing by movement of the position of a group of particles, and local mixing that causes diffusive mixing of particles by sliding and collision between particles. The horizontal mixing step and the up / down mixing step are total mixing, while the micro mixing step is local mixing. A higher effect can be expected by performing such local mixing after reducing the particle group composed of particles of the same type to some extent by overall mixing. For this reason, it is preferable that the micro-mixing step be the final step in terms of mixing efficiency.

[0015] The method for producing a granular pesticidal composition according to claim 3 comprises:
In addition to the structure of claim 1 or 2, the horizontal mixing step is performed by a reducing tank.

According to the above configuration, the horizontal mixing step can be easily performed by utilizing the falling of each particle of the granular pesticide composition.

The method for producing a granular pesticidal composition according to claim 4 comprises:
In addition to the configuration of the third aspect, the horizontal mixing step is performed as an initial step.

Mixing in the above-mentioned demixing tank is unlikely to cause collision of particles and the like, and the effect of local mixing is small. Therefore, it is preferable to make the horizontal mixing step the first step from the viewpoint of mixing efficiency.

The method for producing a granular pesticidal composition according to claim 5 comprises:
In addition to the configuration of any one of claims 1 to 4, the vertical mixing step is performed by a blade rotating mixer.

[0020] The method for producing a granular pesticidal composition according to claim 6 comprises:
In addition to the configuration of any one of claims 1 to 4, the vertical mixing step is performed by a container rotary mixer.

According to the configuration of claim 5 or 6, it is possible to easily perform the above-mentioned upper and lower mixing step.

[0022] The method for producing a granular pesticidal composition according to claim 7 comprises:
In addition to the configuration of any one of the first to sixth aspects, the micro-mixing step utilizes a falling force of particles due to gravity.

[0023] The method for producing a granular pesticidal composition according to claim 8 comprises:
In addition to the configuration of the seventh aspect, in the micro-mixing step, particles are collected and dispersed.

[0024] The method for producing a granular pesticidal composition according to claim 9 comprises:
In addition to the configuration of any one of the first to eighth aspects, the vertical mixing step is performed by a cascade mixer.

According to the seventh, eighth or ninth aspect,
The micro-mixing step can be easily performed by utilizing the falling of each particle of the granular pesticide composition.

[0026]

BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, a granular pesticidal composition is a mixture of particles composed of two or more kinds of pesticide-containing particles. The pesticide-containing particles constituting the granular pesticide composition are different when (a) the kind of the pesticide active ingredient contained in the particles is different, and (b) the kind of the pesticide active ingredient contained in the particles is the same, If their contents differ by more than twice,
(C) When the type and content of the pesticidal active ingredient contained in the particles are the same, and the type of the auxiliary material is different, (d) the type of the agricultural chemical active ingredient and the auxiliary material contained in the particle are the same,
It refers to the case where the contents of the auxiliary materials differ by more than twice. In this case, the auxiliary material refers to a component other than the pesticidal active ingredient whose content in the pesticide-containing particles is 1% or more. However,
In the present invention, the particle group consisting of two or more kinds of pesticide-containing particles includes a particle group consisting of one kind of pesticide-containing particles and one or more kinds of non-pesticide-containing particles (particles containing no pesticide active ingredient). Including.

The mixing ratio of each pesticide-containing particle type constituting the granular pesticide composition is 1 to 99% by weight in the composition. For example, in the case of a mixture of two kinds of pesticide-containing particles, Is usually in a weight ratio of 50:50 to 1:99, preferably 50:50 to 75:25. The particle diameter of the pesticide-containing particles is usually 0.2 to 2 as a volume median diameter.
0 mm, preferably 0.3 to 10 mm. The number of particles per gram of the pesticide-containing particles is usually 50 to 50.
The pesticide-containing particles usually have an apparent specific gravity of 0.3 to 1.5 g / cc.
Preferably it is 0.7 to 1.2 g / cc. The apparent specific gravity of the pesticide-containing particles can be measured by the whole agricultural method. In the two or more pesticide-containing particles mixed in the present invention,
The difference in the apparent specific gravity of each pesticide-containing particle type is preferably 0.3 or less, more preferably 0.2 or less.

In the present invention, the pesticide-containing particles generally have a cubic shape, a rectangular parallelepiped shape, a triangular pyramid shape, a conical shape, a columnar shape, or the like.
They are spherical, dumbbell-shaped, oval, oval, convex lens-shaped, concave lens-shaped, plate-shaped, and the like.

In the present invention, the pesticide-containing particles usually comprise a pesticidally active ingredient and a carrier, and if necessary, a surfactant,
Binders, solvents, stabilizers, coloring agents, coating agents and the like are added.

The pesticidal active ingredients include insecticides, fungicides,
Herbicides, insect growth regulators, plant growth regulators and the like can be mentioned, and specific examples thereof include the following compounds.

Fenitrothion [O, O-dimethyl O-
(3-methyl-4-nitrophenyl) phosphorothioate], phenthione [O, O-dimethyl O- (3-methyl-4- (methylthio) phenyl) phosphorothioate], diazinone [O, O-diethyl-O-2-isopropyl] -6-methylpyrimidin-4-yl phosphorothioate], chloropyrifos [O, O-diethyl-O-
3,5,6-trichloro-2-pyridyl phosphorothioate], acephate [O, S-dimethylacetyl phosphoramidothioate], methidathion [S-2,3-dihydro-5-methoxy-2-oxo-1,3,3 4-thiadiazol-3-ylmethyl O, O-dimethylphosphorodithioate], disulfoton [O, O-diethyl S-
2-ethylthioethyl phosphorodithioate], DDV
P [2,2-dichlorovinyldimethylphosphate],
Sulfophos [O-ethyl O-4- (methylthio) phenyl S-propyl phosphorodithioate], cyanophos [O-4-cyanophenyl O, O-dimethyl phosphorothioate], 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], azinphosmethyl [S-3,4-dihydro-4-oxo-1,2,2;
3-benzotriazin-3-ylmethyl O, O-dimethylphosphorodithioate], 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-butylphenylmethyl carbamate],
Benfracarb [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], methomil [S-methyl-N- (methylcarbamoyloxy) thioacetimidate], ethiophenecarb [2- (ethylthiomethyl) phenylmethylcarbamate], aldicarb [2 -Methyl-2-
(Methylthio) propionaldehyde O-methylcarbamoyloxime], oxamyl [N, N-dimethyl-
Carbamate compounds such as 2-methylcarbamoyloxyimino-2- (methylthio) acetamide] and phenothiocarb [S-4-phenoxybutyl-N, N-dimethylthiocarbamate];
(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-methyl Butyrate], fenpropatrin [(RS) -α-cyano-3-phenoxybenzyl 2,2,3,3-tetramethylcyclopropanecarboxylate], cypermethrin [(RS) -α-cyano-3-phenoxy] Benzyl (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 (1
RS, 3Z) -cis-3- (2-chloro-3,3,3-
Trifluoroprop-1-enyl) -2,2-dimethylcyclopropanecarboxylate], deltamethrin [(S) -α-cyano-3-phenoxybenzyl (1
R) -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], bifensulin [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
(1R) -cis-3- (1,2,2,2-tetrabromoethyl) -2,2-dimethylcyclopropanecarboxylate], silafluofen [(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 [(RS) -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], acrinasulin [(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 (1R
S) -cis, trans-2,2-dimethyl-3- (2-
Methyl-1-propenyl) cyclopropanecarboxylate], aletrin [(RS) -2-methyl-4-oxo-3- (2-propenyl) -2-cyclopentene-1
-Yl (1RS) -cis, trans-2,2-dimethyl-3- (2-methyl-1-propenyl) cyclopropanecarboxylate], prarethrin [(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], imiprosulin [2,5-dioxo-
3- (2-propynyl) imidazolidin-1-ylmethyl (1R) -cis, trans-2,2-dimethyl-3
-(2-methyl-1-propenyl) cyclopropanecarboxylate], d-framethrin [5- (2-propynyl) furfuryl (1R) -cis, trans-2,2
-Dimethyl-3- (2-methyl-1-propenyl) cyclopropanecarboxylate], pyrethroid compounds such as 5- (2-propynyl) furfuryl 2,2,3,3-tetramethylcyclopropanecarboxylate,
Thiadiazine derivatives such as buprofezin [2-tert-butylimino-3-isopropyl-5-phenyl-1,3,5-thiadiazin-4-one], nitroimidazolidine derivatives, cartap [S, S '-(2-dimethylaminotrimethylene) ) Bis (thiocarbamate)], thiocyclam [N, N-dimethyl-1,2,3-trithian-5-ylamine], bensultap [S, S′-2
-Dimethylaminotrimethylene di (benzenethiosulfonate)] and N-cyano such as N-cyano-N'-methyl-N '-(6-chloro-3-pyridylmethyl) acetamidine. Amidine derivatives,
Endosulfan [6,7,8,9,10,10-hexachloro-1,5,5a, 6,9,9a-hexahydro-6,9-methano-2,4,3-benzodioxathiepine oxide], γ-BHC [1, 2, 3, 4, 5, 6
-Hexachlorocyclohexane], dicofol [1,1-
Chlorinated hydrocarbon compounds such as bis (4-chlorophenyl) -2,2,2-trichloroethanol] and chlorofluazuron [1- {3,5-dichloro-4- (3-chloro-
5-trifluoromethylpyridin-2-yloxy) phenyl {-3- (2,6-difluorobenzoyl) urea], teflubenzuron [1- (3,5-dichloro-
2,4-difluorophenyl) -3- (2,6-difluorobenzoyl) urea], flufenoxuron [1-
Benzoylphenylurea-based compounds such as {4- (2-chloro-4-trifluoromethylphenoxy) -2-fluorophenyl} -3- (2,6-difluorobenzoyl) urea], amitraz [N, N'-} Formamidine derivatives such as (methylimino) dimethylidin {-di-2,4-xylysine], chlordimeform [N '-(4-chloro-2-methylphenyl) -N, N-dimethylmethinimidamide], diafenthiuron [N- (2,6-diisopropyl-4-phenoxyphenyl) -N′-t-
Thiourea derivatives such as butylcarbodiimide], N-phenylpyrazole compounds, methoxadiazone [5-methoxy-3- (2-methoxyphenyl) -1,3,4-oxadiazol-2- (3H) -one], Bromopropylate [isopropyl 4,4'-dibromobenzylate], tetradiphone [4-chlorophenyl 2,4,5-
Trichlorophenylsulfone], quinomethionate [S, S-6-methylquinoxaline-2,3-diyldithiocarbonate], propargite [2- (4-te
rt-butylphenoxy) cyclohexylprop-2-
Ilsulfite], fenbutatin oxide [bis {tris (2-methyl-2-phenylpropyl) tin peroxide], hexthiazox [(4RS, 5R
S) -5- (4-Chlorophenyl) -N-chlorohexyl-4-methyl-2-oxo-1,3-thiazolidine-
3-carboxamide], clofentezine [3,6-bis (2-chlorophenyl) -1,2,4,5-tetrazine], pyridaben [2-tert-butyl-5- (4-
tert-butylbenzylthio) -4-chloropyridazin-3 (2H) -one], fenpyroximate [te
rt-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], pyrimidifene [5-chloro-
N- [2- {4- (2-ethoxyethyl) -2,3-dimethylphenoxy} ethyl] -6-ethylpyrimidine-
4-amine], milbemectin, abamectin, ivamectin, 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-propoxy Ethylidene] 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-triazole-1
-Yl) pentan-3-ol, (E) -1- (2,4
-Dichlorophenyl) -4,4-dimethyl-2- (1H
-1,2,4-triazol-1-yl) -1-penten-3-ol, 1- (2,4-dichlorophenyl)-
4,4-dimethyl-2- (1H-1,2,4-triazol-1-yl) pentan-3-ol, 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-triazine-
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-triazine-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-dimethoxypyrimidin-2-yl) Aminocarbonyl] phenylmethanesulfonamide, 2-methoxycarbonyl-N-[(4-methoxy-6-methyl-1,3,5-triazin-2-yl) aminocarbonyl] thiophene-
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-imidazole-
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-oxoimidazoline-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-thiazolecarboxamide, 2,2-dichloro-N- [1- (4-chlorophenyl) ethyl] -3-methylcyclopropanecarboxamide, methyl (E) -2-2-2 6- (2-cyanophenoxy) pyrimidin-4-yloxy-phenyl-
3-methoxyacrylate, 5-methyl-1,2,4-
Triazolo [3,4-b] benzothiazole, 3-allyloxy-1,2-benzisothiazole-1,1-dioxide, diisopropyl = 1,3-dithiolan-2-
Ilidene-malonate, O, O-dipropyl-O-4-
Methylthiophenyl phosphate and the like.

As the carrier, a mineral carrier, a vegetable carrier,
Animal carriers, synthetic carriers and the like can be mentioned. As the mineral carrier, for example, kaolinite, dickanite, nacrite, kaolin minerals such as halosite, chrysotile, lizatite, antichorite, serpentine such as amesite, sodium montmorillonite, calcium montmorillonite, montmorillonite minerals such as magnesium montmorillonite, Smectites such as saponite, hectorite, sauconite, and hyderite, mica such as pyrophyllite, talc, rubite, muscovite, fengitite, sericite, illite, silica such as cristobalite and quartz, hydrous magnesium silicate such as attapulgite and sepiolite , Dolomite, calcium carbonate such as calcium carbonate fine powder, sulfate minerals such as gypsum, gypsum, zeolite, zeolite, tuff, vermiculite, laponite, pumice Diatomaceous earth, acid clay, etc. activated clay and the like. As a vegetable carrier, for example, cellulose,
Rice husk, flour, wood flour, starch, bran, bran, soybean flour and the like can be mentioned. As the synthetic carrier, for example, wet silica,
Examples include dry-processed silica, calcined product of wet-processed silica, surface-modified silica, and modified starch (Pineflow, manufactured by Matsutani Chemical). These carriers are usually contained in the pesticide-containing particles in an amount of 0.5%.
-99.9% by weight, preferably 25-99.5% by weight.

Examples of the surfactant include polyoxyethylene alkyl ether, polyoxyethylene alkyl aryl ether, polyoxyethylene lanolin alcohol, polyoxyethylene alkylphenol formalin condensate, polyoxyethylene sorbitan fatty acid ester, and polyoxyethylene glyceryl monoester. Fatty acid esters, polyoxypropylene glycol monofatty acid esters, polyoxyethylene sorbitol fatty acid esters,
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 alkyl Nonionic surfactants such as amines, alkylamine hydrochlorides such as dodecylamine hydrochloride, dodecyltrimethylammonium salts, alkyldimethylbenzylammonium salts, alkylpyridinium salts, alkylisoquinolinium salts and dialkylmorpholinium salts such as dialkylmorpholinium salts. Cationic surfactants such as quaternary ammonium salts, benzethonium chloride and polyalkylvinylpyridinium salts, and sodium fatty acids 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 fatty acid ester such as higher alkyl sulfonate and lauric ester sulfonate Sulfonates, dialkylsulfosuccinates such as dioctylsulfosuccinate, higher fatty acid amidesulfonates such as oleamide amidesulfonate, alkylaryl sulfonates such as sodium dodecylbenzenesulfonate and diisopropylnaphthalenesulfonate, alkylaryl Formalin condensates of sulfonates, higher alcohol sulfates such as pentadecane-2-sulfate, dipolyoxyethylene dodecyl ester Polyoxyethylene alkyl phosphoric acid esters such as telluric acid ester,
Anionic surfactants such as styrene-maleic acid copolymer, N-laurylalanine, N, N, N-trimethylaminopropionic acid, N, N, N-trihydroxyethylaminopropionic acid, N-hexyl-N, And amphoteric surfactants such as N-dimethylaminoacetic acid, 1- (2-carboxyethyl) pyrimidinium betaine and lecithin. The amount of the surfactant is usually 0.1 to 40% by weight, preferably 0.1 to 10% by weight, based on the pesticide-containing particles.

Examples of the binder include: Examples include synthetic polymers such as acrylic polymers, vinyl polymers, and polyoxyalkylenes; semi-synthetic polymers such as cellulose derivatives, processed starch, and lignin derivatives; and natural polymers. Examples of the acrylic polymer include sodium polyacrylate and sodium polymethacrylate, and examples of the vinyl polymer include polyvinyl alcohol, polyvinyl pyrrolidone, and vinyl acetate copolymer. Examples of the polyoxyalkylene include polyoxyethylene and polyoxypropylene. As cellulose derivatives,
Examples include sodium carboxymethylcellulose, dextrin, hydroxypropylmethylcellulose, methylcellulose, methylethylcellulose, hydroxypropylcellulose, and the like, and modified starches include modified starch, carboxymethyl starch, soluble starch, and the like. Examples of the lignin derivative include sodium lignin sulfonate. As natural polymers, gum arabic, xanthan gum, tragacanth gum, guar gum,
Examples include polysaccharides such as carrageenan, alginic acid, and sodium alginate, and proteins such as casein, casein lime, gelatin, and collagen. The amount of the binder is usually 0.1 to 10% by weight, preferably 0.5 to 5% by weight, based on the pesticide-containing particles.

As the solvent, for example, saturated aliphatic hydrocarbons such as hexane, decane, tridecane, hexadecane and octadecane, unsaturated hydrocarbons such as 1-undecene and 1-heneicosene, selecrol S45 (ICI
Solvents), ketones such as methyl ethyl ketone, cyclohexanone, alcohols such as ethanol, butanol, octanol, ethyl acetate, dimethyl phthalate, methyl laurate, ethyl palmitate, octyl acetate, dioctyl succinate, Esters such as didecyl adipate, xylene, ethylbenzene, octadecylbenzene, alkylnaphthalenes such as Solvesso 100 (solvent manufactured by Exxon Chemical), dodecylnaphthalene, tridecylnaphthalene, solvesso 200 (solvent manufactured by Exxon Chemical), ethylene glycol, diethylene glycol, etc. Glycols such as propylene glycol monomethyl ether and ethylene glycol monoethyl ether, oleic acid, capric acid, Fatty acids such as cement acid, N, N-
Acid amides such as dimethylformamide and N, N-diethylformamide; olive oil, soybean oil, rapeseed oil, castor oil, flaxseed oil, cottonseed oil, palm oil, avocado oil, animal and vegetable oils such as shark liver oil, and mineral oils such as machine oil; Glycerin derivatives such as glycerin and glycerin fatty acid esters are exemplified. The amount of the solvent is usually 30% by weight or less, preferably 0.1 to 20% by weight, based on the pesticide-containing particles.

Examples of the stabilizer include phenolic antioxidants, amine antioxidants, phosphorus antioxidants,
Examples include sulfur-based antioxidants, ultraviolet absorbers, epoxidized vegetable oils such as epoxidized soybean oil, epoxidized linseed oil, and epoxidized rapeseed oil, isopropyl acid phosphate, liquid paraffin, and ethylene glycol. The amount of the stabilizer is usually 0.01 to 10 with respect to the pesticide-containing particles.
%, Preferably 0.01 to 5% by weight.

As the coloring agent, for example, rhodamine B,
Rhodamines such as solar rhodamine, dyes such as yellow No. 4, blue No. 1, red No. 2 and the like, as fragrances, for example, ester fragrances such as ethyl acetoacetate, ethyl enanthate, ethyl cinnamate, isoamyl acetate; Caproic acid,
Organic acid-based flavors such as cinnamic acid, alcohol-based flavors such as cinnamic alcohol, geraniol, citral, and decyl alcohol; aldehydes such as vanillin, piperonal and perilaldehyde; ketone-based flavors such as maltol and methyl β-naphthyl ketone; menthol; Is mentioned. The amount of the colorant and / or flavor is usually 0.0
1 to 5% by weight.

Examples of the coating agent include wax, thermoplastic resin, thermosetting resin, sulfur and the like.

Examples of the wax include synthetic waxes such as carbowax, hoechstrow, sucrose ester and fatty acid ester, natural waxes such as carnauba wax, beeswax and wood wax, and petroleum waxes such as paraffin wax and petrolactam. .

Examples of the thermoplastic resin include polyolefins such as polyethylene, polypropylene, polybutene and polystyrene, polyvinyl acetate, polyvinyl chloride, and the like.
Vinyl polymers such as polyvinylidene chloride, polyacrylic acid, polymethacrylic acid, polyacrylate and polymethacrylate, butadiene polymer, isoprene polymer, chloroprene polymer, butadiene-styrene copolymer, ethylene-propylene -Diene copolymers, diene polymers such as styrene-isoprene copolymers, ethylene-propylene copolymers, butene-ethylene copolymers, butene-propylene copolymers, ethylene-vinyl acetate copolymers, ethylene- Polyolefin copolymers 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 usually produced by reacting a polyisocyanate and a polyol in the presence of a curing agent such as an organic metal or an amine. Examples of the curing agent include organic metals such as dibutyltin diacetate, dibutyltin dichloride, dibutyltin dilaurate, dibutylthiostannic acid, stannous octylate, di-n-octyltin dilaurate, triethylenediamine, N-methylmorpholine, and N , N-dimethyldidodecylamine, N-dodecylmorpholine, N, N-dimethylcyclohexylamine,
N-ethylmorpholine, dimethylethanolamine,
N, N-dimethylbenzylamine, 1,8-diazabicyclo (5,4,0) undecene-7, isopropyl titanate, tetrabutyl titanate, oxyisopropyl vanadate, n-propyl zirconate, 1,4-diazabicyclo [2, 2,2] octane and the like. The polyisocyanate and the polyol, which are monomers of the urethane resin, are usually 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-methylene bis (cyclohexyl isocyanate), and trimethylhexamethylene diisocyanate. , 1,3- (isocyanatomethyl) cyclohexane, triphenylmethane triisocyanate, tris (isocyanatophenyl) thiophosphate, and mixtures thereof. Note that, in place of the above polyisocyanate monomer, modified products or oligomers thereof can also 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. Examples of the polyol include condensation polyester polyols, polyether polyols, poly (meth) acrylic acid polyols, lactone polyester polyols, polycarbonate polyols, natural polyols and modified products thereof. The condensed polyester polyol is usually obtained by a condensation reaction of a polyol and a dibasic acid, and the polyether polyol is usually obtained by a polymerization reaction of a cyclic oxide. Poly (meta)
The acrylic acid polyol is usually obtained by a condensation reaction between poly (meth) acrylic acid and a polyol, a condensation reaction between (meth) acrylic acid and a polyol, or a polymerization reaction of a (meth) acrylic ester monomer. The lactone-based polyester polyol is obtained by ring-opening polymerization of ε-caprolactam using a polyhydric alcohol as an initiator.
Polycarbonate polyols are usually obtained by the reaction of glycols and carbonates, and the polyols include methylene glycol, ethylene glycol, propylene glycol, tetramethylene glycol, hexamethylenediol, trimethylolpropane, polytetramethylene glycol, glycerin, pentaerythritol , Sorbitol, sucrose, and. These oligomers are exemplified. Examples of the dibasic acid include adipic acid and phthalic acid. As (meth) acrylic acid,
Acrylic acid, methacrylic acid and the like are generally used.

Epoxy resins are usually prepared by reacting phenol or alcohol with epichlorohydrin in the presence of a curing agent, reacting carboxylic acid with epichlorohydrin in the presence of a curing agent, amine, cyanuric acid or hydantoin in the presence of a curing agent. It is formed by the reaction of phenol with epichlorohydrin, the reaction of an aliphatic cyclic epoxy compound in the presence of a curing agent such as peracetic acid, and the like. As the curing agent, diethylene triamine, triethylene tetramine, meta-xylylenediamine, isophorone diamine,
1,3-bisaminomethylcyclohexane, diaminodiphenylmethane, m-phenylenediamine, diaminodiphenylsulfone, dicysandiamide, 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, polyazeleic anhydride, hexahydrophthalic anhydride, methyltetrahydrophthalic anhydride, methylnadic anhydride, trimetic anhydride, pyromellitic anhydride, benzophenonetetracarboxylic acid, tetrabromophthalic anhydride, anhydride Het acid, novolak type polyphenol, polymercaptan, polyisocyanate, carboxylic acid-containing polyester resin, benzyldimethylaniline 2,4,6-trisdimethylaminomethylphenol, 2-methylimidazole, 2-ethyl, 4-methyl-imidazole, 2-heptadecylimidazole, aromatic sulfonium salt, aromatic diazonium salt, resole type phenol resin, methylol group Urea resin containing, melamine resin containing methylol group and the like. As the epoxy resin to be produced, 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 novolak type, orthocresone novolak type, DPP novolak type, trishydroxyphenylmethane type, tetraphenylolethane type, etc. Glycidyl ether type epoxy resins, tetraglycidyl diaminodiphenylmethane type, triglycidyl isocyanurate type, hydantoin type, aminophenol type, aniline type, toluidine type and other glycidylamine type epoxy resins, alicyclic epoxy resins, and the like.

The alkyd resin is produced, for example, by reacting a polybasic acid with a polyhydric alcohol in the presence of a denaturing agent such as a natural vegetable oil or animal fat, a metal soap or an anti-skinning agent, if necessary. Examples of the polybasic acid include phthalic anhydride and maleic anhydride, and examples of the polyhydric alcohol include pentaerythol and glycerin. Examples of the denaturing agent include soybean oil, linseed oil,
Tung oil, safflower oil, coconut oil, palm oil, dehydrated castor oil and the like, and as the metal soap, usually, manganese,
Examples include naphthenes such as cobalt, zirconium, nickel, iron and lead or octylic acids such as zirconium octylate, manganese naphthenate, cobalt octylate, and mixtures thereof. Examples of the anti-skinning agent include dipentene, methoxyphenol, cyclohexanone oxime, methyl ethyl ketone oxime, and mixtures thereof.

The unsaturated polyester resin is usually obtained by reacting an unsaturated dibasic acid with a dihydric alcohol in the presence of a vinyl monomer. Examples of the unsaturated dibasic acid include phthalic anhydride, isophthalic acid, terephthalic acid, succinic acid, adipic acid, azelaic acid, sebacic acid, tetrahydrophthalic anhydride, hexahydrophthalic anhydride, tetrabromophthalic anhydride, tetrachlorophthalic anhydride. Acid, heptonic anhydride, endmethylenetetrahydrophthalic anhydride and the like, and as the dihydric alcohol,
Ethylene glycol, propylene glycol, 1,3-
Examples thereof include butylene glycol, 1,6-hexanediol, diethylene glycol, dipropylene glycol, neopentyl glycol, triethylene glycol, hydrogenated bisphenol A, and bisphenol dihydroxypropyl ether. Examples of the vinyl monomer include styrene, vinyl toluene, chlorostyrene, diallyl phthalate, triallyl cyanurate, methyl methacrylate and the like.

The phenol resin is produced by reacting phenol with an aldehyde in the presence of a catalyst such as hydrochloric acid, oxalic acid, hexamethylenetetramine and the like. As the phenol, phenol, o-cresol, m-
Cresol, p-cresol, xylenol, pt-
Butylphenol, resorcinol and the like. In this reaction, a novolak-type phenol resin is obtained under acidic catalyst conditions, and a resol-type phenol resin is obtained under basic catalyst conditions.

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

The silicon resin is usually formed by a reaction between silicon and a polyfunctional siloxane in the presence of a catalyst.

The pesticide-containing particles in the composition of the present invention can be obtained by granulation by a granulation method usually used for formulating pesticides. As the granulation method, an extrusion granulation method, a compression granulation method, a stirring granulation method, a fluidized bed granulation method, a fluidized bed granulation method, a tumbling granulation method, a coating granulation method and the like are used. The method for producing the pesticide-containing particles in the present invention is not particularly limited, but an example employing an extrusion granulation method will be described below.

The active ingredient of the pesticide, the solid carrier, if necessary,
A mixture is prepared by mixing a surfactant, a binder, a solvent, a stabilizer, a coloring agent, a coating agent, and the like. The mixer used at this time is a ribbon mixer, a Nauta mixer,
Sugi mixer, Henschel mixer, Lady game mixer and the like. Next, water is dropped, sprayed, or sprayed on the mixture and kneaded to prepare a kneaded product. Examples of the kneader used at this time include a Nauta mixer, a ribbon mixer, a Henschel mixer, a kneader and the like. The amount of water used in kneading is usually 5 to 35% by weight, preferably 1% by weight, based on the mixture before water addition.
0 to 25% by weight. Next, the kneaded product is granulated using a granulator to prepare a granulated product. Granulation machines used in this case include basket granulators, screw granulators, extrusion granulators such as pelletizers, compression granulators such as roller compactors, and stirring granulators such as Henschel mixers and Nauter mixers. A granulator, a rolling granulator such as a pan granulator, a fluidized bed granulator, and the like. The obtained granules are dried, sized, and sieved to obtain granules as pesticide-containing particles. The drier used at this time includes a fluidized bed drier and a bed drier. Examples of the sizing machine include a marmelizer, a pin mill, and a crusher.
Examples of the sieving machine include a gyro shifter and an electromagnetic vibration type sieving machine.

In the present invention, when pesticide-containing particles coated with a resin are used, the granules are subjected to an operation of further coating with a resin. In that case, as a coating method,
For example, a coating agent is dissolved or dispersed in a solvent, and the solution is added to the granules moving in a rotating pan, a rotating drum, a fluidized bed, a fluidized bed, etc., and simultaneously dried with hot air to form a coating layer.・ A method of growing and coating to a predetermined coating rate (coating drying method) or adding a raw material of the coating agent to the granules moving with a rotating pan, a rotating drum, a stirring mixer, etc. A method in which a catalyst is added as necessary while heating or cooling, and a material for the coating agent is cured to form and grow a coating layer, thereby covering the coating to a predetermined coverage (coating curing method), etc. Is mentioned. Of these coating methods, the coating drying method is often used when coating a thermoplastic resin, and the coating curing method is often used when coating a thermosetting resin. In coating with wax or sulfur, any of a coating drying method and a coating curing method can be applied. In addition, in order to prevent aggregation of the pesticide-containing particles and agglomeration, when coating the granules,
It is preferable to add the coating agent intermittently in small units.

Next, the method of mixing two or more different pesticide-containing particles, which is a feature of the present invention, is shown in FIGS.
It will be described based on. The method for mixing the pesticide-containing particles in the present invention comprises the following steps a), b) and c). a) A horizontal mixing step in which the position of the particle group is moved in the horizontal direction to perform overall convection mixing. b) A vertical mixing step of moving the position of the particle group in the vertical direction to perform overall convection mixing. c) A micro-mixing step of performing local diffusion mixing by sliding and collision between particles.

As one embodiment of the present invention, FIG. 1 shows an example of a mixing apparatus for performing the above mixing. As shown in FIG. 1, the mixing device includes a reduction tank 1, a dynamic mixer 2, and a static mixer 3. Further, the mixing device,
For example, it is assumed that a particle group of 1 kg in total is obtained by mixing 500 g of particle groups α and β composed of two kinds of different pesticide-containing particles.

In the mixing apparatus, the reducing tank 1 is a mixing means for performing the step a). As shown in FIG. 2A, a plurality of thin funnel portions 11a and 11b are alternately formed. Has a structure arranged in The funnel section 11
a and 11b are arranged such that the lower openings serving as the outlets 12a and 12b are biased with respect to the upper opening serving as the particle inlet, and have an asymmetric shape in a plane perpendicular to the arrangement direction of the funnels 11a and 11b. Has become.

As shown in FIG. 2B, a charging table 4 and a damper 5 are disposed above the reduction tank 1.
The charging table 4 is a table on which a plurality of types of particle groups to be mixed by the mixing device are placed, and the funnel unit 1 is provided.
Reduction tank 1 in which upper openings 1a and 11b are arranged
Has a bottom area substantially equal to the top area. Further, for example, when the particle group mixed by the mixing device is composed of two types of particles α and β, the preparation table 4 is divided into two by a partition plate 41 formed along the arrangement direction of the funnel portions 11a and 11b. The particles are divided into regions, and a predetermined amount of particle groups α and β are placed in each of the regions. At this time, the bottom of the preparation table 4 is closed by the damper 5.

When a predetermined amount of the particle groups α and β are placed on the loading table 4, the damper 5 is opened, and the particle groups α and β are opened.
Falls toward the above-mentioned reduction tank 1. In the above-mentioned contraction tank 1, the outlets 12a and 12b of the funnel portions 11a and 11b are provided.
Are disposed in opposite directions to the partition plate 41 of the preparation table 4. That is, the outlets 12a and 12b are arranged in a staggered manner on the bottom surface of the reduction tank 1.

Here, the particles entering the funnel 11a are drawn along the arrow A in FIG. 2B for the particles α, and along the arrow B for the particles β in the funnel 11a.
And is discharged from the outlet 12a. The particles entering the funnel 11b fall in the funnel 11b along the arrow C for the particles α and along the arrow D for the particles β, and are discharged from the outlet 12b. Thereby, of the particle groups α and β passing through the reduction tank 1, about half of the particles in each particle group fall while moving horizontally (indicating the drop along arrows B and C). , The horizontal mixing of the particle groups α and β is performed.

In the configuration shown in FIG. 1, a sliding damper 6 for closing the outlets 12a and 12b is disposed below the reduction tank 1, and the particle group α charged into the reduction tank 1 is arranged. , Β are the respective funnel portions 11a with the damper 6 closed.
After being accumulated at the bottom of 11b, it is discharged by opening the damper 6. However, the damper 6 is not always necessary in the present invention, and may be omitted. In addition, even when the damper 6 is provided, the type thereof is not particularly limited. For example, a rotation open type damper such as the above-described damper 5 may be used. Of course, in the above damper 5, a slide type damper may be used instead of the rotation open type.

As described above, the step a) using the above-mentioned contraction tank 1
In this case, there are a group of particles that fall almost directly below the funnel and a group of particles that fall while moving horizontally along the slope of the inner wall of the funnel. At this time, a particle layer is formed at the outlet due to the difference in the falling speed of these particle groups. That is, it can be said that the mixing step by the above-mentioned deconcentrating tank 1 is a step of dividing the particle group into two and forming two particle layers in which the particles are layered. The step of dividing the pesticide-containing particle group into two in the above step refers to an operation of dividing the pesticide-containing particle group with high accuracy at a weight ratio of 50:50 to 30:70. Moreover, although the above-mentioned contraction tank 1 is a two-minute vessel,
It is also possible to perform three divisions and four divisions by using a reducing tank such as a three-divider or a four-divider.

The particles that have been horizontally mixed in the reduction tank 1 are then dropped into the dynamic mixer 2. In the mixing apparatus according to the present embodiment, the dynamic mixer 2 is a so-called agitator for performing the step b), and is mixed by the dynamic mixer 2 as shown in FIG. And a wing plate 22 for stirring and mixing the particles in the hopper 21.
・ 22.

The blades 22 are mounted on the rotating shaft 23 so that the stirring surface thereof is parallel to the rotating shaft 23. By rotating the inside of the hopper 21 in a vertical plane, the particle group Move up and down. Thereby, up-down mixing can be performed in the dynamic mixer 2.

At the bottom of the hopper 21, there is provided an opening 24 for dropping the mixed particles toward the next stage of the static stirrer 3. The opening 24 serves as a damper during stirring. 7 (see FIG. 1). still,
Although the damper 7 is described as a slide type damper in FIG. 1, it may be a rotation open type damper. However, in the dynamic mixer 2, it is necessary to keep the particle group in the hopper 21 during the stirring of the particle group by the blade plate 22 (about 5 to 6 seconds). Unlike the damper 6 to be arranged, the damper 7 cannot be omitted.

As described above, the step b) by the dynamic mixer 2 is a step of mixing the pesticide-containing particles by stirring. Various devices such as a mixer and a stirrer other than the dynamic mixer 2 can be used for mixing and stirring the particle group. Examples of the mixer used in the present invention include a rotary mixer for a container such as a drum mixer and a concrete mixer, a rotary mixer for a blade such as a Nauta mixer, a Henschel mixer, a ribbon mixer, an agitator, a flash blender, and a fluidized bed mixer. And a ribbon mixer, an agitator and the like are preferably used.

When using a blade rotary mixer, the distance (clearance) between the blade and the mixing vessel is preferably larger than the volume median diameter of the pesticide-containing particles to be mixed, more preferably. The clearance is 1.2 to 3 times the volume median diameter of the pesticide-containing particles, and more preferably the clearance is 1.5 to 2 times the volume median diameter of the pesticide-containing particles.

When using a rotary blade type mixer, it is preferable to minimize the dead space in the mixer, and the dead space capacity relative to the total volume of the particulate agricultural chemical composition to be mixed is 20% or less, Preferably 10%
Or less, more preferably 5% or less. The dead space described here refers to a portion in the mixer where the contents are not mixed by the mixing force of the rotating blades, and is particularly likely to occur in places where the distance between the stirring blades and the wall of the mixer is large.

Further, when using the blade rotating type mixer, the shape of the blade is not particularly limited.
A propeller-type blade may be attached to a vertical rotation shaft. That is, it is sufficient that at least particles in the hopper are given a vertical moving force by the agitation accompanying the rotation of the blade.

A fluid mixer is generally a mixing means for causing particles to flow by causing high-speed convection of air in a vertical direction inside the vessel and mixing the particles. Normally, when a fluidized mixer is used, particles rise in the air flow from the lower part of the vessel to the upper part, and after reaching the upper part of the vessel, fall along the outer wall of the vessel, and again flow in the air flow. Repeat the flowing motion of climbing up on the. In a fluidized mixer, total mixing is performed by repeating such vertical convection in a vessel with particles.

The particle groups α and β that have passed through the reduction tank 1 and the dynamic mixer 2 are further mixed by the static mixer 3.

The static mixer 3 is a mixer called a so-called cascade mixer. As shown in FIG. 1, a splitter 31 for dividing the flow of particles and a mixer 32 for mixing by dispersion / assembly are alternately arranged. In a plurality of stages. FIG. 1 shows a case in which the flow dividing section 31 and the mixing section 32 are each arranged in three stages.

As shown in FIG. 4, the upper surface of the flow dividing portion 31 serving as an inlet for the particle group is divided into four regions having a cross-shaped cross section, and a funnel portion is formed in each region. The outlets of the funnels are point-symmetrically arranged. That is, as shown in FIG. 5, the outlets 33a and 33b are arranged closer to the center in the two regions at the diagonal positions, and the outlets 3 in the other two regions.
The reference numerals 3c and 33d are arranged so as to be in contact with one of the partition sides partitioning the upper surface of the flow dividing portion 31 and the outer side perpendicular thereto.

The mixing section 32 has a guide chute 3 having a constricted shape at its upper part toward the outlet 34a.
4, and an adjusting umbrella 35 is disposed inside the guide chute 34. The adjusting umbrella 35 includes the arm 3
6 and are spaced apart from the wall surface of the guide chute 34.
It has a role of dispersing the particles discharged from 3a and 33b. The particle group dispersed by the adjusting umbrella 35 and the particle group discharged from the outlets 33c and 33d of the flow dividing unit 31 are gathered by the guide chute 34 and fall from the outlet 34a. Further, the exit 34
A dispersing umbrella 37 is disposed immediately below a.
The particles that have fallen from the outlet 34a of the guide chute 34 are dispersed again by 7 and distributed to the funnels of the next-stage flow dividing unit 31.

As described above, the particle groups α and β passing through the static mixer 3 are divided by the division unit 31 and are repeatedly mixed and dispersed in the mixing unit 32, whereby micro mixing is performed.

As described above, the step c) using the static mixer 3 is a step of dispersing the particle groups and then reassembling them. In the static mixer 3, the drop force due to gravity is used for dispersing and assembling the particle groups. However, a step of dispersing and assembling the particles by mechanical force may be used.
Examples of the collecting / dispersing machine used in the present invention include a cascade mixer. Preferably, a cascading mixer capable of repeating the collecting / dispersing motion twice or more is used.

Below the static mixer 3, a mixing chute 8 is arranged, and the particle groups α and β that have passed and mixed through the branching section 31 and the mixing section 32 are mixed by the mixing chute 8. It is put into a packaging bag or the like. Although omitted in the mixing apparatus of FIG. 1, a damper may be provided between the static mixer 3 and the mixing chute.

As the mixing method used in the present invention, the mixing method comprising the above-mentioned steps a), b) and c) is used, but the order of these steps is changed or the predetermined steps are repeated. Is also possible. As an example, a mixing method including three steps of a), b) and c), a mixing method including three steps of b), a) and c), a), b), a), A mixing method including four steps of c) and a mixing method including four steps of a), b), b) and c) are exemplified.

In the present invention, steps a) and b) are general mixing in which mixing is caused by the movement of the position of the particle group, while step c) is mixing in which mixing is caused by slipping or collision between particles. Local mixing.
A higher effect can be expected when such local mixing is performed after reducing the particle group composed of particles of the same type to some extent by overall mixing. Therefore, step c) is preferably a final step.

Also in the above steps a) and b), the mixing mechanism includes not only total mixing but also some local mixing. However, in the above description, the particle size reduction tank 1 performing the step a) is less likely to cause collision of particles and the like, and the effect of the local mixing is small compared to the dynamic mixer 2 performing the step b). Therefore, when a reduction tank is used as a means for performing the step a), the step a) is desirably the first step.

The granular pesticidal composition obtained by the method of the present invention is usually stored and transported in a form packed in a suitable package. From the viewpoint of maintaining uniformity, it is preferable to mix and immediately package and commercialize.

Therefore, in the practice of the present invention, it is practical that the amount of the granular pesticide composition obtained by one mixing is set to the amount to be packed in one package, and the granular pesticide composition is packed in the package each time. preferable.

At this time, the amount of the granular pesticidal composition packed in one package is usually 20 g to 20 kg, preferably 100 g to 3 kg. In addition, the granular pesticidal composition obtained by the method of the present invention combining horizontal mixing, vertical mixing, and micro-mixing is immediately packed into a package each time to be packed in a package. When the amount of the pesticide composition is small, for example, the amount is 10
In the case of about 0 g to 3 kg, a particularly excellent effect is exhibited in terms of uniformity of the granular pesticidal composition.

Examples of the package include transparent containers such as kraft paper bags, paper bags, and cloth bags, and shielding containers such as poly-containing kraft paper bags, aluminum-containing kraft paper bags, poly bags, poly bottles, water-soluble film bags, and laminated plastic bags. Is mentioned. In addition, when a permeable container is used, it is preferable to reduce the space volume at the time of packaging, and to compress and pack so that the space volume does not change. When a shielding container is used, it is preferable to reduce the space volume at the time of packaging. As the space volume for packaging the granular pesticide composition, the ratio of the space volume to the content volume is 20% or less, preferably 10% or less.
%, More preferably 5% or less.

Further, the above-mentioned granular pesticidal composition contains active ingredients of pesticides such as insecticides, fungicides, herbicides, plant growth regulators and the like, and is used in general use of pesticides. For example, paddy fields, dry fields, nursery boxes, fields, orchards, mulberry fields, greenhouses,
It can be used in non-agricultural lands such as agricultural lands such as open fields, forests, lawns, golf courses, roadside trees, roads, roadsides, wetlands, ponds, reservoirs, rivers, waterways, sewers and the like.

The above-mentioned granular pesticide composition can be applied by a general pesticide application method, for example, by direct spraying by hand, backpack type granulator, pipe granulator, air granulator, or the like. It can be applied by a power granulator, a seedling box granulator, a tractor-mounted granulator, a multi-mouth hose granulator, a rice transplanter equipped with a granulator, and the like. When the above-mentioned granular pesticide composition is applied, it is preferable to use it in a situation where its sustained release performance can be utilized. That is, application of a nursery box, application of rice planting, application of a seedling raising period, application of a seeding period, application at the time of germination, and the like are also preferable in view of the characteristics of the granular pesticidal composition. For example, when the granular pesticide composition is used in a nursery box,
The application rate is usually 10 to 200 g, preferably 25 to 100 g per seedling box (usually about 0.16 m ² ).
In this case, the application method is direct application by hand or application by a granulator for a nursery box. When the granular pesticide composition is used in paddy fields and fields,
The application rate is usually 0.1-10k per 10 ares
g, preferably 0.25 to 5 kg. In this case, the method of application is direct spraying by hand, backpacking granulator, pipe granulator, aerial granulator, multi-mouth hose granulator, granulation. A rice transplanter equipped with a machine and a cultivator equipped with a granulator are used.

Next, the effect of the mixing method of the present invention will be specifically described with reference to a production example of the above-mentioned granular pesticide composition and a test example of uniformity after mixing.

[Preparation of Granular Agrochemical Composition Used in Examples] Granule A for Mixing (Red Colored Granules) As a pesticidal active ingredient, 1% by weight of procymidone active ingredient, 20% by weight of bentonite, 2% by weight of surfactant, water solubility Polymer 2w
%, 0.3 w% of a red pigment and 74.7 w% of a mineral carrier
After mixing with a 0 L type Nauta mixer, the mixture was kneaded with water. This is a basket type extrusion granulator (screen diameter 0.9m)
m), and then granulated, dried and sieved to a particle size of 0.5 to
1.4 mm granules A were obtained. -Mixing granule B (no added pesticide component, non-colored granules) 20 g% of bentonite, 2 w% of surfactant, 2 w% of water-soluble polymer, and 74.7 w% of mineral carrier are the above-mentioned granulation A for mixing
The mixture was formulated in the same manner as described above to obtain granules B for mixing.

[Mixing Equipment Used in Examples and Comparative Examples] Disperser: Uses a reduction tank 1 shown in FIG. 2 Dynamic mixer: Uses a dynamic mixer 2 shown in FIG. 3 Static mixer Example 1: Using the static mixer 3 shown in FIG. 4 [Example 1] Using a mixing device in which a disperser, a dynamic mixer, and a static mixer are vertically arranged in this order, 5 granules A for mixing are used.
After separately weighing 00 g and 500 g of the granule B, a mixing experiment was performed. Next, the container into which the particulate pesticide composition after mixing was charged was divided into a total of six regions, namely, upper, middle, lower, and right and left, and 50 g was sampled from almost the center of each region to analyze the content of the pesticide active ingredient. The coefficient of variation CV% of the value was determined and the mixing uniformity was evaluated. Table 1 shows the results.

Comparative Example 1 A dynamic mixer and a static mixer were
Using a mixing device vertically arranged in this order, the mixing granules A
And 500 g of granule B were separately measured, and then a mixing experiment was performed. Next, the uniformity of mixing was evaluated in the same manner as in Example 1. Table 1 shows the results.

[Comparative Example 2] Using a mixing device in which a disperser and a dynamic mixer were vertically arranged in this order, 5 granules A were mixed.
After separately weighing 00 g and 500 g of the granule B, a mixing experiment was performed. Next, the uniformity of mixing was evaluated in the same manner as in Example 1. Table 1 shows the results.

Comparative Example 3 Using a mixing device in which a disperser and a static mixer were vertically arranged in this order, 5 granules A were mixed.
After separately weighing 00 g and 500 g of the granule B, a mixing experiment was performed. Next, the uniformity of mixing was evaluated in the same manner as in Example 1. Table 1 shows the results.

[0090]

[Table 1]

In Table 1, the coefficient of variation CV is determined by the following equation: CV = {(standard deviation) / (average)} × 100. The smaller the value of the coefficient of variation CV, the better the mixing uniformity. Is shown.

[0092]

According to the method for producing a particulate pesticidal composition of the present invention as described above, the position of the above-mentioned particulate group is adjusted in the horizontal direction in the mixing of the particulate groups comprising two or more different types of pesticide-containing particles. A horizontal mixing step of moving and performing overall convective mixing; a vertical mixing step of moving the position of the particle group in the vertical direction to perform overall convective mixing; and a local mixing due to slip / collision between the particles. And a micro-mixing step for performing effective diffusion mixing.

Therefore, by the horizontal mixing step and the vertical mixing step, the mixing property of the particles in all directions is enhanced, and the diffusion property of the particles in the micro-mixing step is increased, so that excellent mixing uniformity is obtained. The effect is obtained that a granular pesticidal composition can be obtained.

The method for producing a granular pesticidal composition according to the second aspect of the present invention is, as described above, configured to perform the micro-mixing step as a final step in addition to the first aspect.

Therefore, in addition to the effect of the constitution of claim 1, the micro-mixing step is performed after the particle group consisting of the same kind of particles is reduced to some extent by overall mixing, whereby the particles in the micro-mixing step are obtained. The effect is obtained that the diffusion effect is efficiently exhibited and the mixing efficiency can be increased.

[0096] In the method for producing a granular pesticidal composition according to the third aspect of the present invention, as described above, in addition to the constitution of the first or second aspect, the horizontal mixing step is carried out by a reduction tank, whereby the particles are produced. There is an effect that the horizontal mixing step can be easily performed by utilizing the drop of each particle of the group.

The method for producing a granular pesticidal composition according to the invention of claim 4 is, as described above, configured to perform the horizontal mixing step as an initial step in addition to the configuration of claim 3.

Therefore, in addition to the effect of the configuration of claim 3, by setting the horizontal mixing step, in which the effect of local mixing is small, as the first step, there is an effect that the mixing efficiency can be increased.

In the method for producing a granular pesticidal composition according to the fifth aspect of the present invention, as described above, in addition to any one of the first to fourth aspects, the up-down mixing step is performed by a blade rotary mixer. Configuration.

In the method for producing a granular pesticidal composition according to the sixth aspect of the present invention, as described above, in addition to any one of the first to fourth aspects, the vertical mixing step is performed by a container rotary mixer. Configuration.

Therefore, in addition to the effect of any one of the first to fourth aspects, there is an effect that the upper and lower mixing step can be easily performed.

According to the method for producing a granular pesticidal composition of the invention of claim 7, as described above, in addition to the constitution of any one of claims 1 to 6, the micro-mixing step may further comprise the step of: This is a configuration that utilizes the falling force of the vehicle.

The method for producing a granular pesticidal composition according to the invention of claim 8 is, as described above, in addition to the constitution of claim 7, a constitution in which particles are collected and dispersed in the micro-mixing step.

The method for producing a granular pesticidal composition according to the ninth aspect of the present invention is, as described above, in addition to any one of the first to eighth aspects, wherein the micro-mixing step is performed by a cascade mixer. .

Therefore, the seventh, eighth, or ninth aspect of the invention has an effect that the micro-mixing step can be easily performed by utilizing the falling of each particle of the particle group.

[Brief description of the drawings]

FIG. 1 illustrates one embodiment of the present invention, and is a cross-sectional view illustrating a schematic configuration of a mixing apparatus.

FIG. 2 is a view showing a structure of a reducing tank in the mixing apparatus, wherein FIG. 2 (a) is a perspective view and FIG. 2 (b) is a sectional view.

FIG. 3 is a perspective view showing a structure of a dynamic mixer in the mixing device.

FIG. 4 is a perspective view showing a structure of a static mixer in the mixing apparatus.

FIG. 5 is a plan view of a branch part in the static mixer.

FIG. 6 is a sectional view showing a schematic configuration of a conventional mixing apparatus.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 shrinkage tank 2 dynamic mixer 3 static mixer 22 blade 31 split flow section 32 mixing section

Claims (9)

[Claims] 1. A method for producing a particulate pesticide composition by mixing particles of two or more different pesticide-containing particles, wherein the position of the particles is moved in a horizontal direction to perform overall convective mixing. A horizontal mixing step, a vertical mixing step in which the position of the particle group is moved in the vertical direction to perform overall convection mixing, and a micro mixing step in which local diffusion mixing is performed by sliding and collision between particles. A method for producing a granular pesticidal composition, comprising: 2. The method according to claim 1, wherein the micro-mixing step is performed as a final step. 3. The method for producing a granular pesticidal composition according to claim 1, wherein the horizontal mixing step is performed by a reducing tank. 4. The method according to claim 3, wherein the horizontal mixing step is performed as an initial step. 5. The method for producing a granular pesticidal composition according to claim 1, wherein the up-down mixing step is performed by a blade rotary mixer. 6. The method for producing a granular pesticidal composition according to claim 1, wherein the up-down mixing step is performed by a rotary container mixer. 7. The method for producing a granular pesticidal composition according to claim 1, wherein the micro-mixing step utilizes a drop force of particles caused by gravity. 8. The method for producing a granular pesticidal composition according to claim 7, wherein particles are collected and dispersed in the micro-mixing step. 9. The method for producing a granular pesticide composition according to claim 1, wherein the micro-mixing step is performed by a cascade mixer.