JP3525499B2 - Solid pesticide composition - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a novel solid pesticide composition having excellent dispersibility in water and suspension.

[0002]

2. Description of the Related Art Powders, granules, wettable powders, and the like are known as formulation forms of solid agricultural chemical compositions. Among them, a wettable powder is widely used as a formulation form of a solid agricultural chemical composition diluted with water before use. Since the wettable powder is a finely pulverized product together with a fine powder of a mineral substance and a surfactant, it has a small apparent specific gravity, is bulky, is inconvenient to measure in the preparation of a spray liquid at the time of use, and is caused by dusting. There may be some drawbacks such as safety issues. Therefore, attempts have been made in recent years to granulate wettable powders.

The granular wettable powder is prepared by mixing a finely pulverized agricultural chemical active ingredient, a surfactant and, if necessary, an auxiliary agent and granulating the mixture into granules. As the granulation method, an extrusion granulation method,
The spray drying granulation method, the fluidized bed granulation method, the rolling granulation method and the like can be mentioned. The use of the granular wettable powder has many advantages such as solving the problems of the apparent specific gravity, the problem of measuring property, and the safety problem due to dusting, which are the drawbacks of the wettable powder.

Generally, when a wettable powder is diluted with water, it is necessary to quickly disperse it in water and maintain a stable suspension state of the finely pulverized agricultural chemical active ingredient and auxiliary ingredient. Further, it is necessary that the granular wettable powder easily disintegrate and disperse in water and maintain a stable suspended state like the wettable powder. However, if the suspension cannot be maintained in a stable state and the suspension property is reduced, it may cause clogging of the spray nozzle, uneven spraying, etc. Will be reduced.

When a granular wettable powder is produced, for example, when the conventional wettable powder formulation is used for granulation, there is a problem that the disintegration dispersibility in water is poor and a stable suspended state cannot be maintained. As a method of solving these drawbacks, a method of blending starch and a water-soluble inorganic salt (Japanese Patent Publication No. 53-12577) and a combination of a sulphate anionic surfactant and a nonionic surfactant are blended. Method (Japanese Patent Publication No. 62-53482)
Japanese Patent Publication), a saccharide, a naphthalenesulfonic acid type surfactant and an alkali metal phosphate salt (Japanese Patent Publication No. 63-63).
No. 38004), molecular weight 5,000 to 20,000.
No. 0 polycarboxylic acid surfactant (JP-A-62-36302), a polymer of unsaturated carboxylic acid, a formalin condensate salt of styrene sulfonate, and an alkali metal phosphate salt. Alternatively, a method of mixing two or more kinds (Japanese Patent Laid-Open No. 61-236701) has been proposed. However, such conventional granular wettable powders are not always satisfactory in disintegration in water and dispersibility when the type, properties, concentration of preparation, etc. of the agrochemical active ingredient are changed.

[0006]

The problem to be solved by the present invention is to improve the dispersibility in water and the suspendability of solid agricultural chemical compositions, particularly agricultural wettable powder compositions such as wettable powders and granular wettable powders. This is to ensure the stability of the suspension.

[0007]

The present invention will be described in detail below. The present invention comprises one or more pesticide active ingredients,
The present invention relates to a solid agricultural chemical composition, particularly a wettable powder and a granular wettable powder, which contains a high-purity desulfonation lignin sulfonate.

The high-purity desulfurized lignin sulfonate used in the present invention means, for example, a hydrolysis reaction, an oxidation reaction, or the like of a sulfite pulp eluate used in a pulp manufacturing process or its concentrate under the conditions of alkaline high temperature and pressure. Examples thereof include those in which the number of sulfone groups and methoxy groups of ligninsulfonic acid, which is the main component of the lignin sulfonic acid, is decreased by increasing the number of functional phenol groups and carboxyl groups by performing desulfonation reaction. Therefore, it differs from the generally used lignin sulfonate in the manufacturing method, composition, etc., and also has a different function as an auxiliary agent.

Specific names of high-purity desulfurized lignin sulfonates include Vanillex N (manufactured by Nippon Paper Industries Co., Ltd.), Vanilex HW (manufactured by Nippon Paper Industries Co., Ltd.),
Vanillex RN (manufactured by Nippon Paper Industries Co., Ltd.), MARACE
LL XC-2 (manufactured by Boregaard), MARASPER
SE CBOS-6 (manufactured by Boregaard), VANISP
ERSE CB (manufactured by Boregaard) and the like can be mentioned.
These high-purity desulfurized lignin sulfonates may be used alone or in combination of two or more.

The amount of the high-purity desulfurized lignin sulfonate added to both the wettable powder and the granular wettable powder is 0.5 to 30% by weight based on 100 parts by weight of the agricultural wettable powder composition of the present invention.
Is preferable, and more preferably 1 to 20% by weight. When it is added in an amount of 0.5% by weight or less, dispersibility and suspension in water become insufficient, and when it is added in an amount of 30% by weight or more, granular wettable powder deteriorates granulation property and formulation becomes difficult. Absent.

In the agricultural wettable powder composition of the present invention, a surfactant, a water-soluble powder, and a fine powder of a mineral substance can be used, if necessary. As a surfactant, a wetting agent is generally used as an agrochemical formulation as a dispersant.
Nonionic type may be mentioned, but if necessary, cationic type,
Amphoteric surfactants may be used. Specific examples include the following.

As the anionic surfactant, various alkyl sulfosuccinates, condensed phosphates, formalin condensates of naphthalene sulfonates, lignin sulfonates, polycarboxylates, alkylbenzene sulfonates, alkylnaphthalene sulfones are used. Acid salt, alkyl ether sulfate, polyoxyethylene alkyl aryl phenyl ether sulfate, polyoxyethylene alkyl aryl sulfate, polyoxyethylene alkyl aryl ether acetate sulfate, polyoxyethylene alkyl ether
Examples thereof include tersulfate ester salts, and examples of such salts include alkali metal salts, ammonium salts, and amine salts.

As the nonionic surfactant, polyoxyethylene alkyl ether, polyoxyethylene alkyl aryl ether, polyoxyethylene alkyl aryl phenyl ether, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene. Examples thereof include polyoxypropylene glycol. These surfactants may be used alone or in combination of two or more.

Examples of the water-soluble powder include lactose, fructose,
Examples thereof include sugars such as sucrose, glucose, dextrin and starch, and alkali metal salts or ammonium salts such as urea and sulfuric acid, phosphoric acid, hydrochloric acid, formic acid, acetic acid and propionic acid. Examples of the fine mineral powder include diatomaceous earth, talc, clay, bentonite, calcium carbonate and the like. These water-soluble powders and fine mineral powders may be used alone or in combination of two or more. If necessary, other auxiliary agents such as absorbent fine powder, binder, grinding aid, decomposition inhibitor, colorant, defoaming agent and the like can be added.

The form of the wettable powder composition for agriculture of the present invention is a wettable powder or a granular wettable powder, and the particle size of the latter is not particularly limited, but is preferably 0.1 to 2.0 mm,
More preferably, it is 0.5 to 1.0 mm. From the viewpoint of user safety, a wettable powder or a granular wettable powder can be quickly dissolved in water, such as polyvinyl alcohol.
It is also possible to form a bag formulation in which a polymer film or a water-soluble paper made of a resin, methylcellulose, a polyethylene glycol derivative or the like is used as a package and sealed with a heat seal.

The pesticidal active ingredient that can be used in the present invention is not particularly limited, but examples thereof include the following. In addition, one or more of the following agrochemical active ingredients may be mixed depending on the type of weeds or pests to be controlled.

The herbicidal active ingredients include the following: (1) Ethyl 5- (4,6-dimethoxypyrimidine-
2-ylcarbamoylsulfamoyl) -1-methylpyrazole-4-carboxylate (generic name: pyrazosulfuron-ethyl), (2) methyl 5-[[[[[[4,6
-Dimethoxy-2-pyrimidinyl) amino] carbonyl] amino] sulfonyl] -3-chloro-1-methyl-
1-H-pyrazol-4-carboxylate (generic name:
Halosulfuron methyl), (3) methyl α- (4,6
-Dimethoxypyrimidin-2-ylcarbamoylsulfamoyl) -O-toluate (generic name: bensulfuron-methyl), (4) 1- (4,6-dimethoxy-1,3,3)
5-triazin-2-yl) -3- [2- (2-methoxyethoxy) phenylsulfonyl] urea (generic name: cinosulfuron), (5) N- (2-chloroimidazo [1,2-a] pyridine- 3-ylsulfonyl) -N '
-(4,6-dimethoxy-2-pyrimidinyl) urea (generic name: imazosulfuron),

(6) 1-{[O- (cyclopropylcarbonyl) phenyl] sulfamoyl} -3- (4,6-
Dimethoxy-2-pyrimidinyl) urea (AC-01
4), (7) 4- (2,4-dichlorobenzoyl)-
1,3-Dimethyl-5-pyrazolyl-p-toluenesulfonate (generic name: pyrazolate), (8) 2- [4-
(2,4-Dichlorobenzoyl) -1,3-dimethylpyrazol-5-yloxy] acetophenone (generic name:
Pyrazoxifene), (9) 2- [4- (2,4-dichloro-m-toluoyl) -1,3-dimethylpyrazol-5-yloxy] -4-methylacetophenone (generic name: benzophenap), (10 ) 1- (α, α-dimethylbenzyl) -3- (paratolyl) urea (generic name: Daimlon),

(11) (RS) -2-Bromo-N- (α,
α-dimethylbenzyl) -3,3-dimethylbutyramide (generic name: bromobutide), (12) α- (2-naphthoxy) propionanilide (generic name: naproanilide) (13) (RS) -2- (2 4-dichloro-m-tolyloxy) propionanilide (generic name: clomeprop), (14) 2,4-dichlorophenyl-3′-methoxy-4′-nitrophenyl ether (generic name: clomethoxynil), (15) 5 -(2,4-dichlorophenoxy) -2-nitrobenzoate methyl (generic name: bifenox),

(16) 5-tert-butyl-3-
(2,4-dichloro-5-isopropoxyphenyl)-
1,3,4-oxadiazolin-2-one (generic name: oxadiazon), (17) 2-benzothiazol-2-yloxy-N-methylacetanilide (generic name: mefenacet), (18) 2-chloro- 2'-6'-diethyl-N- (butoxymethyl) acetanilide (generic name: butachlor), (19) S, S'-dimethyl 2-difluoromethyl-4-isobutyl-6-trifluoromethylpyridine-3,5 -Dicarbothioate (generic name: dithiopyr) (20) (Z) -N-but-2-enyloxymethyl-2
-Chloro-2 ', 6'-diethylacetanilide (generic name: butenachlor),

(21) 2-chloro-2 ', 6'-diethyl-N- (2-propoxyethyl) acetanilide (generic name: pretyrachlor), (22) 2-3-dihydro-
3,3-Dimethylbenzofuran-5-ylethanesulfonate (generic name: benfruceto), (23) O-3-
Tertiary butylphenyl 6-methoxy-2-pyridyl (methyl) thiocarbamate (generic name: pyributycarb), (24) S- (4-chlorobenzyl) -N, N
-Diethylthiocarbamate (generic name: bench oca-
B), (25) S-1-methyl-1-phenylethylpiperidine-1-carbothiate (generic name: dimepipere-
),

(26) S-benzyl 1,2-dimethylpropyl (ethyl) thiocarbamate (generic name: esprocarb), (27) S-ethylhexahydro-1H-azepine-1-carbothioate (generic name: molinate) ),
(28) O-ethyl-O- (3-methyl-6-nitrophenyl) secondary butyl phosphoroamido thioate (generic name: butamiphos), (29) (1RS, 2SR, 4
SR) -1,4-epoxy-p-mens-2-yl 2-
Methylbenzyl ether (generic name: synmethrin),
(30) 2-Methylthio-4,6-bis (ethylamino)
-S-triazine (generic name: cimetrin),

(31) O, O-diisopropyl-2- (benzenesulfonamido) ethyldithiophosphate (generic name: SAP), (32) 2-methylthio-4-ethylamino-6- (1,2-dimethylpropyl) Amino) -s-
Triazine (generic name: dimetamethrin), (33) 2-methylthio-4,6-bis (isopropylamino) -s-
Triazine (generic name: promethrin), (34) 2-amino-3-chloro-1,4-naphthoquinone (generic name: AC
N), (35) 2-methyl-4-chlorophenoxybutyric acid (generic name: MCPB),

(36) 2-Methyl-4-chlorophenoxyacetic acid (generic name: MCP), (37) 5-dipropylamino-α, α, α-trifluoro-4,6-dinitro-o-
Toluidine (generic name: prodiamine) (38) 2 ', 3'-dichloro-4-ethoxymethoxybenzanilide, (39) 1- (2-chlorobenzyl) -3
-(Α, α-Dimethylbenzyl) urea, (40) N-
[2 '-(3'-methoxy) -thienylmethyl] -N-
Chloroaceto-2,6-dimethylanilide,

(41) n-Butyl- (R) -2- [4-
(2-Fluoro-4-cyanophenoxy) phenoxy]
Propionate, (42) 3-N- (2-fluoro-4-
Chloro-5-cyclopentyloxyphenyl) -5-isopropylidene-1,3-oxazolidine-2,4-dione.

The insecticidal active ingredients include the following: (1) O, O-dimethyl-O- [3-methyl-4- (methylthio) phenyl] thiophosphate (generic name: M
PP), (2) O, O-dimethyl-O- (3-methyl-
4-Nitrophenyl) thiophosphate (generic name: M
EP), (3) (2-isopropyl-4-methylpyrimidyl-6) -diethylthiophosphate (generic name: diazinon), (4) O, O-diethyl-O- (5-phenyl-3-isoxazolyl ) Phosphorothioate (generic name: isoxathione), (5) O, O-diethyl-O-
(3-oxo-2-phenyl-2H-pyridazine-6-
Il) phosphorothioate (generic name: pyridafenthion),

(6) O, O-dimethyl-O-3,5,6
-Trichloro-2-pyridyl phosphorothioate (generic name: chlorpyrifosmethyl), (7) dimethyldicarbetoxyethyldithiophosphate (generic name: marathon)
(8) Dimethyldithiophosphorylphenyl ethyl acetate (generic name: PAP), (9) O, O-dimethyl-S-
(N-methylcarbamoylmethyl) dithiophosphate (generic name: dimethoate), (10) O, O-dimethyl-
S-2- (ethylthio) ethyl phosphorodithioate (generic name: ethylthiomethone),

(11) O, O-dimethyl-S-phthalimidomethyldithiophosphate (generic name: PMP), (1
2) 2-chloro-1- (2,4,5-trichlorophenyl) vinyldimethylphosphate (generic name: CVM
P), (13) 2-chloro-1- (2,4-dichlorophenyl) vinyldimethylphosphate (generic name: dimethylvinphos), (14) O, O-dipropyl-O-4-methylthio Phenyl phosphate (generic name: propaphos),
(15) Dimethyl-2,2,2-trichloro-1-hydroxyethylphosphonate (generic name: DEP),

(16) Ethyl paranitrophenylthionobenzenephosphonate (generic name: EPN), (17) 1-naphthyl-N-methylcarbamate (generic name: NAC),
(18) Metatoyl-N-methylcarbamate (generic name:
MTMC), (19) 2-isopropylphenyl-N-methylcarbamate (generic name: MIPC), (20) 2-secondary-butylphenyl-N-methylcarbamate (generic name: BPMC),

(21) 2-isopropoxyphenyl-N-
Methyl carbamate (generic name: PHC), (22) 3,4
-Xylyl-N-methylcarbamate (generic name: MPM
C), (23) 3,5-xylyl-N-methylcarbamer
(Generic name: XMC), (24) 2,2-dimethyl-1,
3-benzodioxol-4-ylmethylcarbamate (generic name: bendiocarb), (25) 2,3-dihydro-2,2-dimethyl-7-benzo [b] furanyl-N
-Dibutylaminothio-N-methylcarbamate (generic name: carbosulfan),

(26) Ethyl-N- [2,3-dihydro-
2,2-Dimethylbenzofuran-7-yloxycarbonyl (methyl) aminothio] -N-isopropyl-β-
Alaninato (generic name: benfracarb), (27) (R
S) -α-Cyano-3-phenoxybenzyl = (RS)
-2,2-Dicule-1- (4-ethoxyphenyl) cyclopropanecarboxylate (generic name: cycloprotoline), (28) 2- (4-ethoxyphenyl) -2-methylpropyl-3-phenoxy Benzyl ether (generic name: etofenprox), (29) 1,3-bis (carbamoylthio) -2- (N, N-dimethylamino) propane hydrochloride (generic name: cartap), (30) 5 -Dimethylamino-1,2,3-trithian oxalate (generic name: thiocyclam),

(31) S, S'-Z-dimethylaminotrimethylene di (benzenethiosulfonate) (generic name:
Bensultap), (32) 2-tert-butylimino-3-isopropyl-5-phenyl-3,4,5,6
-Tetrahydro-2H-1,3,5-thiadiazine-4
-One (generic name: buprofezin), (33) diisopropyl 1,3-dithiolane-2-ylidene-maloneate (generic name: isoprothiolane), (34) 1- (6-chloro-3-pyridylmethyl) -N -Nitro (imidazolidin-2-ylidene) amine (generic name: imidacloprid), (35) 1- (2,6-dichloro-4-trifluoromethyl) -3-cyano-4-trifluoromethylsulfenyl-5 -Aminopyrazole (generic name: fipronil)

The bactericide active ingredients include the following: (1) O, O-diisopropyl-S-benzylthiophosphate (generic name: IBP), (2) 3-allyloxy-1,2-benzisothiazol-1,1-dioxide (generic name: probenazo- ), (3) diisopropyl
1,3-dithiolane-2-ylidene-maloneate (generic name: isoprothiolane), (4) 1,2,5,6-tetrahydropyrrolo [3,2,1-ij] quinolin-4-one (generic name : Pyroquinone), (5) α, α, α-trifluoro-3′-isopropoxy-O-toluanilide (generic name: flutolanil).

The agricultural wettable powder and the granular wettable powder composition of the present invention can be produced, for example, by the following methods, but not limited thereto. The method for producing the wettable powder is
One or more pesticide active ingredients and high-purity desulfurized lignin sulfonate, if necessary, a surfactant, water-soluble powder, fine powder of minerals, etc. are added in a required amount, uniformly mixed, and then finely pulverized. . The fine pulverization can be carried out by a dry fine pulverizer such as an impact type pulverizer, a ball mill and a jet mizer.

The method for producing the granular wettable powder can be obtained, for example, by adding an appropriate amount of water to the wettable powder obtained by the above method, mixing and kneading, granulating with a granulator and drying. Granulation can be performed by an extrusion granulator, a pressure granulator, a fluidized bed granulator, a stirring granulator, a tumbling granulator, and the like. Also,
A suitable amount of water, pesticide active ingredient, high-purity desulphonation lignin sulfonate, if necessary surfactant, water-soluble powder,
If necessary, an aqueous suspension obtained by finely pulverizing with a wet pulverizer such as a ball mill or a sand grinder is added a necessary amount of fine powder of a mineral substance, a surfactant, a water-soluble powder, a mineral. Fine powder or the like may be added in an appropriate amount and mixed, and this may be obtained by spray drying with a spray dryer.

[0036]

EXAMPLES Next, examples of the present invention will be specifically described, but the present invention is not limited thereto.
All parts are parts by weight. Example 1 3 parts of pyrazosulfuron-ethyl (general name), 50 parts of oxadiazone (general name), 2 parts of white carbon, 5 parts of high-purity desulphonated lignin sulfonate sodium, polyoxyethylene alkylaryl ether sulphate To 5
And 35 parts of calcium carbonate were uniformly mixed, and then finely pulverized with Jetmizer (manufactured by Seishin Enterprise Co., Ltd.) to obtain a wettable powder of the present invention.

Example 2 3 parts of halosulfuron-methyl (general name), 50 parts of oxadiazone (general name), 2 parts of white carbon, 5 parts of high-purity desulphonated lignin sulfonate sodium, polyoxyethylene alkylaryl ether Tersulfate 5 parts,
After uniformly mixing 35 parts of calcium carbonate, it was finely pulverized with a Jetmizer (manufactured by Seishin Enterprise Co., Ltd.) to obtain a wettable powder of the present invention.

Example 3 97 parts of pyrazosulfuron-ethyl (generic name) and 3 parts of white carbon are mixed and finely pulverized with a jet mizer (manufactured by Seishin Enterprise Co., Ltd.). Similarly, 97 parts of oxadiazone (generic name) and 3 parts of white carbon are mixed and finely pulverized. This pyrazosulfuroethyl (generic name) finely pulverized product 3
Parts, oxadiazone finely ground product (generic name) 50 parts, high-purity desulfone lignin sulfonate 5 parts, sodium alkylnaphthalene sulfonate 5 parts, potassium chloride 10 parts, Kle-27 parts after mixing using a mixer Then, about 25 parts of water is added and kneaded, and granulated by using an extrusion granulator equipped with a screen having a pore diameter of 0.5 mm. After drying at 50 ° C., the powder was sized with a sieve of 20 to 50 mesh to obtain the granular wettable powder of the present invention.

Example 4 97 parts of halosulfuron-methyl (generic name) and white car
3 parts of Bonn are mixed and finely pulverized with a Jetmizer (manufactured by Seishin Enterprise Co., Ltd.). Similarly, 97 parts of oxadiazone (generic name) and 3 parts of white carbon are mixed and finely pulverized. This halosulfuron methyl (generic name) finely pulverized product 3
Parts, oxadiazone finely ground product (generic name) 50 parts, high-purity desulfone lignin sulfonate 5 parts, sodium alkylnaphthalene sulfonate 5 parts, potassium chloride 10 parts, Kle-27 parts after mixing using a mixer Then, about 25 parts of water is added and kneaded, and granulated by using an extrusion granulator equipped with a screen having a pore diameter of 0.5 mm. After drying at 50 ° C., the powder was sized with a sieve of 20 to 50 mesh to obtain the granular wettable powder of the present invention.

Example 5 97 parts of pyrazosulfuron-ethyl (generic name) and 3 parts of white carbon are mixed and finely pulverized with a jet mizer (manufactured by Seishin Enterprise Co., Ltd.). Similarly, 97 parts of oxadiazone (generic name) and 3 parts of white carbon are mixed and finely pulverized. This pyrazosulfuroethyl (generic name) finely pulverized product 3
Parts, oxadiazone finely ground product (generic name) 50 parts, high-purity desulfone lignin sulfonate sodium 5 parts, polyoxyethylene dinonylphenyl ether sulfate ammonium salt 2 parts, sodium salt of naphthalene sulfonic acid formalin condensate 10 parts, ammonium sulfate 10
Parts and 20 parts of clay are mixed using a mixer, and then about 2 parts of water is added.
5 parts were added and kneaded, and granulated using an extrusion granulator equipped with a screen having a hole diameter of 0.5 mm. After drying at 50 ° C, 2
The powder was sized with a sieve of 0 to 50 mesh to obtain the granular wettable powder of the present invention.

Example 6 97 parts of halosulfuron-methyl (generic name) and white car
3 parts of Bonn are mixed and finely pulverized with a Jetmizer (manufactured by Seishin Enterprise Co., Ltd.). Similarly, 97 parts of oxadiazone (generic name) and 3 parts of white carbon are mixed and finely pulverized. This halosulfuron methyl (generic name) finely pulverized product 3
Parts, oxadiazone finely ground product (generic name) 50 parts, high-purity desulfone lignin sulfonate sodium 5 parts, polyoxyethylene dinonylphenyl ether sulfate ammonium salt 2 parts, sodium salt of formalin condensate of naphthalene sulfonate 10 parts, ammonium sulfate 10
Parts and 20 parts of clay are mixed using a mixer, and then about 2 parts of water is added.
5 parts were added and kneaded, and granulated using an extrusion granulator equipped with a screen having a hole diameter of 0.5 mm. After drying at 50 ° C, 2
The powder was sized with a sieve of 0 to 50 mesh to obtain the granular wettable powder of the present invention.

Comparative Example 1 Pyrazosulfuron ethyl (general name) 3 parts, oxadiazone (general name) 50 parts, white carbon 2 parts, sodium lignin sulfonate 5 parts, polyoxyethylene alkylaryl ether sulphate After uniformly mixing 5 parts and 35 parts of calcium carbonate, Jet Mizer (Co., Ltd.)
Finely pulverized with a Seishin company to obtain a wettable powder.

Comparative Example 2 3 parts of halosulfuronmethyl (general name), 50 parts of oxadiazone (general name), 2 parts of white carbon, 5 parts of sodium lignin sulfonate, 5 parts of polyoxyethylene alkylaryl ether sulphate Part, calcium carbonate 3
After uniformly mixing 5 parts, a wettable powder was obtained by finely pulverizing with a Jetmizer (manufactured by Seishin Enterprise Co., Ltd.).

Comparative Example 3 97 parts of pyrazosulfuron-ethyl (generic name) and 3 parts of white carbon are mixed and pulverized with a jet mizer (manufactured by Seishin Enterprise Co., Ltd.). Similarly, 97 parts of oxadiazone (generic name) and 3 parts of white carbon are mixed and finely pulverized. This pyrazosulfuroethyl (generic name) finely pulverized product 3
Parts, oxadiazone finely ground product (generic name) 50 parts, sodium lignin sulfonate 5 parts, sodium alkylnaphthalene sulfonate 5 parts, potassium chloride 10 parts, Kle-2
After mixing 7 parts using a mixer, about 25 parts of water is added and kneaded, and granulated using an extrusion granulator equipped with a screen having a pore diameter of 0.5 mm. After drying at 50 ° C., the powder was sized with a sieve of 20 to 50 mesh to obtain a granular wettable powder.

Comparative Example 4 97 parts of halosulfuron-methyl (generic name) and white car
3 parts of Bonn are mixed and finely pulverized with a Jetmizer (manufactured by Seishin Enterprise Co., Ltd.). Similarly, 97 parts of oxadiazone (generic name) and 3 parts of white carbon are mixed and finely pulverized. This halosulfuron methyl (generic name) finely pulverized product 3
Parts, oxadiazone finely ground product (generic name) 50 parts, sodium lignin sulfonate 5 parts, sodium alkylnaphthalene sulfonate 5 parts, potassium chloride 10 parts, Kle-2
After mixing 7 parts using a mixer, about 25 parts of water is added and kneaded, and granulated using an extrusion granulator equipped with a screen having a pore diameter of 0.5 mm. After drying at 50 ° C., the powder was sized with a sieve of 20 to 50 mesh to obtain a granular wettable powder.

Comparative Example 5 97 parts of pyrazosulfuron-ethyl (generic name) and 3 parts of white carbon are mixed and finely pulverized with a jet mizer (manufactured by Seishin Enterprise Co., Ltd.). Similarly, 97 parts of oxadiazone (generic name) and 3 parts of white carbon are mixed and finely pulverized. This pyrazosulfuroethyl (generic name) finely pulverized product 3
Parts, oxadiazone finely ground product (generic name) 50 parts, sodium lignin sulfonate 5 parts, polyoxyethylene dinonylphenyl ether sulphate ammonium salt 2
Parts, 10 parts of sodium salt of formalin condensate of naphthalene sulfonic acid, 10 parts of ammonium sulfate and 20 parts of clay were mixed using a mixer, and then about 25 parts of water were added and kneaded to obtain a screen having a pore diameter of 0.5 mm. Granulate using an extrusion granulator equipped with. After drying at 50 ° C., the powder was sized with a sieve of 20 to 50 mesh to obtain a granular wettable powder.

Comparative Example 6 97 parts of halosulfuron-methyl (generic name) and white car
3 parts of Bonn are mixed and finely pulverized with a Jetmizer (manufactured by Seishin Enterprise Co., Ltd.). Similarly, 97 parts of oxadiazone (generic name) and 3 parts of white carbon are mixed and finely pulverized. This halosulfuron methyl (generic name) finely pulverized product 3
Parts, oxadiazone finely ground product (generic name) 50 parts, sodium lignin sulfonate 5 parts, polyoxyethylene dinonylphenyl ether sulphate ammonium salt 2
Parts, 10 parts of sodium salt of formalin condensate of naphthalene sulfonic acid, 10 parts of ammonium sulfate and 20 parts of clay were mixed using a mixer, and then about 25 parts of water were added and kneaded to obtain a screen having a pore diameter of 0.5 mm. Granulate using an extrusion granulator equipped with. After drying at 50 ° C., the powder was sized with a sieve of 20 to 50 mesh to obtain a granular wettable powder.

Test Example 1 About 10 g of the preparations obtained in Examples and Comparative Examples were placed in an aluminum laminate bag and sealed with a heat seal, and the mixture was stored at 50 ° C. for 1 hour.
I saved it for a month. Immediately after the production and according to the method described below, the wettable powder was evaluated for suspension stability, and the granular wettable powder was evaluated for disintegration in water and suspension stability according to the method described below.

(Disintegration test in water) 1 g of a sample was accurately weighed and 2
It is put into a 250 ml graduated cylinder with a double stopper, which contains 250 ml of 3 degree hard water placed in a constant temperature water bath at 0 ° C. After being left standing for 20 seconds, the graduated cylinder is turned over once every 2 seconds to turn over the graduated cylinder, and the number of times of reversal until the sample is completely disintegrated is made disintegrating in water. The smaller the number of inversions, the better the disintegration. The results are shown in Table 1.

[0050]

[Table 1]                         Table 1 ─────────────────────────────                             Underwater disintegration (times)                       Immediately after production, 50 ° C x 1 month ─────────────────────────────     Example 3 4 5     Example 4 4 4     Example 5 55     Example 6 55     Comparative Example 3 9 9     Comparative Example 4 8 10     Comparative Example 5 10 10     Comparative Example 6 9 9 ─────────────────────────────

(Suspension stability test) 1 g of a sample was precisely weighed and 2
It is put into a 250 ml graduated cylinder with a double stopper, which contains 250 ml of 3 degree hard water placed in a constant temperature water bath at 0 ° C. After standing still for 20 seconds, the graduated cylinder is inverted 20 times with a space of once inversion for 2 seconds. After reversing, graduate the cylinder 2
After standing still in a constant temperature water bath at 0 ° C, 15 minutes later, 25 ml of a pipette was used to accurately take 25 ml of the test solution from the center of the solution, and the content of the active ingredient in the test solution was quantified by liquid chromatography. Calculate the suspension rate from the following formula.

Suspension rate (%) = [(B × 10) / A] × 100 A: Active ingredient amount in the first sample B: Active ingredient amount in the collected test liquid The larger the suspension rate, the better. . The results are shown in Table 2. Ingredient 1 in Table 2 is pyrazosulfuron-ethyl (common name) or halosulfuron-methyl (common name), and ingredient 2 is oxadiazone (common name).

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[Table 2]                         Table 2 ─────────────────────────────                               Suspension rate (%)                       Immediately after production, 50 ° C x 1 month                   Ingredient 1 ingredient 2 ingredient 1 ingredient 2 ─────────────────────────────     Example 1 95 96 94 96     Example 2 93 92 90 91     Example 3 96 95 92 95     Example 4 95 95 92 94     Example 5 97 94 93 93     Example 6 92 93 89 91     Comparative Example 1 72 73 69 71     Comparative Example 2 68 70 65 70     Comparative Example 3 70 72 65 71     Comparative Example 4 65 71 62 72     Comparative Example 5 70 69 63 66     Comparative Example 6 72 73 71 72 ─────────────────────────────

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INDUSTRIAL APPLICABILITY The agricultural wettable powder and the granular wettable powder composition of the present invention have improved dispersibility and suspension in water and are more excellent in suspension than conventional wettable powders and granular wettable powders. Stabilization can be achieved.

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-1-250388 (JP, A) JP-A-2-188588 (JP, A) JP-A-3-204865 (JP, A) JP-A-4- 346981 (JP, A) JP-A-5-1043 (JP, A) JP-A-5-17453 (JP, A) JP-A-5-25143 (JP, A) JP-A-5-25173 (JP, A) JP 5-39272 (JP, A) JP 5-186436 (JP, A) JP 5-202031 (JP, A) JP 5-310709 (JP, A) JP 6-92943 (JP, A) JP-A-6-172306 (JP, A) JP-A-6-184115 (JP, A) JP-A-6-192252 (JP, A) JP-A-5-255015 (JP, A) Kaihei 5-255022 (JP, A) JP 5-194104 (JP, A) JP 5-194105 (JP, A) JP 5-339 106 (JP, A) JP-A-6-192005 (JP, A) JP-A-6-65010 (JP, A) JP-A-6-192009 (JP, A) JP-A-60-45503 (JP, A) JP 62-48606 (JP, A) Tokuhyo 6-505697 (JP, A) International Publication 93/000336 (WO, A1) (58) Fields investigated (Int.Cl. ⁷ , DB name) A01N 25 / 30 CA (STN) REGISTRY (STN)

Claims (3)

(57) [Claims] 1. A formalin condensate of naphthalene sulfonic acid, one or more selected from alkylnaphthalene sulfonates and polyoxyethylene alkylaryl ether sulfates, one or more agrochemical active ingredients, and highly pure partially desulfone lignin sulfonate. A granular wettable powder containing: 2. A particulate hydrated agent according to claim 1, wherein the content of high-purity partial desulfonation lignosulfonate is 0.5 to 30 wt%. 3. The pesticide active ingredient is ethyl 5- (4,6-
Dimethoxypyrimidin-2-ylcarbamoylsulfamoyl) -1-methylpyrazole-4-carboxyl-
Or methyl 5-[[[[((4,6-dimethoxy-2
- pyrimidinyl) amino] carbonyl] amino] sulfonyl] -3-chloro-1-methyl -1-H- pyrazole --4-carboxylate - granular wettable powder according to claim 1 which is bets.