JPH0592902A - Pesticidal granular hydrating agent - Google Patents

Abstract

PURPOSE:To obtain the title hydrating agent reduced in powderability without lowering its degradability in water by incorporating a pesticidal active ingredient-contg. granular pesticidal composition with ethylene glycol, propylene glycol or a polymer thereof. CONSTITUTION:The objective hydrating agent can be obtained by incorporating (A) a pesticidal granular composition containing at least one kind of pesticidal active ingredient (pref. solid at normal temperatures), e.g. bactericide (s) such as phenallymal or herbicide (s) such as pyrazosulfuron-ethyl with (B) ethylene glycol, propylene glycol or a polyethylene glycol or polypropylene glycol >=1000 in molecular weight (pref. at 0.5-10wt.% based on the whole amount of the final preparation). The polyethylene glycol or polypropylene glycol <=1000 in molecular weight is pref. diethylene glycol, triethylene glycol, or dipropylene glycol. The granular diameter of the present hydrating agent is pref. 0.1-2mm.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pesticidal granular wettable powder having a reduced powdering property without lowering the disintegration property in water.

[0002]

2. Description of the Related Art Among agrochemical formulations, examples of formulations diluted with water and sprayed include emulsions, wettable powders, and flowable agents. Since the emulsion uses an organic solvent as a carrier, there are problems such as toxicity, irritation, flammability and odor. On the other hand, since wettable powder is a fine powder formulation, it is inconvenient to measure, and fine powder may fly up when adjusting the spray liquid (called powder standing), affecting the safety of workers. Has become.

Since a flowable agent is a suspension type formulation,
Although it is a formulation that solves the inconvenience of weighing wettable powders and the problem of dusting, it is a viscous liquid formulation that is difficult to remove from the container, and a small amount of the formulation remains in the container, which may cause difficulties in discarding the container. Yes, these are problems. In order to solve the above problems, particularly in recent years, attempts have been made to granulate wettable powders (granular wettable powders). That is,
Granulating the wettable powder improves the powdering and weighing difficulties of the wettable powder.

However, in general, if a binder of a general granule is used to solve the problem of dusting, the hardness of the granule may be increased, the disintegration property in water may be lowered, and the efficacy may be insufficient. On the other hand, if it is attempted to impart the same degree of disintegration as that of the wettable powder, there is a drawback that the hardness of the particles becomes low and the powder is easily pulverized. When powdered easily, the powdery substance increases in the formulation, and therefore, the sprayer tends to inhale the powdery substance at the time of spraying or to scatter out of the spraying area, which causes the same problems as conventional wettable powders. Various studies have been conducted on the use of a binder of general granules, even if the binder is used in a granulated wettable powder, the pulverizability is not improved, or the pulverizability is improved, The disintegration property in water has decreased.

[0005]

The problem to be solved by the present invention is to provide a pesticidal granular wettable powder having a reduced powdering property without lowering the disintegration property in water.

[0006]

That is, the present invention provides a granular agricultural chemical composition containing one or more agricultural chemical active ingredients,
The present invention relates to a pesticidal granular wettable powder containing ethylene glycol, propylene glycol, or polyethylene glycol or polypropylene glycol having a molecular weight of 1,000 or less. The pesticidal granular wettable powder of the present invention has reduced disintegration properties in water. And without
It has a reduced pulverizability.

The lower the molecular weight of ethylene glycol, propylene glycol or polyethylene glycol or polypropylene glycol having a molecular weight of 1000 used in the present invention is, the lower the powderability of the granulated wettable powder is, and the more water-soluble the powder is. Disintegration is good,
Specifically, ethylene glycol, propylene glycol, diethylene glycol, triethylene glycol,
Dipropylene glycol is mentioned as a preferred one. When polyethylene glycol or polypropylene glycol having a molecular weight of 1000 or more is used, it is possible to reduce the powderability of the granulated wettable powder, but it is not preferable because the disintegration property in water tends to be significantly reduced.

The content of one or more components selected from ethylene glycol, propylene glycol or polyethylene glycol having a molecular weight of 1000 or less or polypropylene glycol ethylene glycol is 0.5 to 5% by weight based on the total amount of the preparation. It is preferably, and more preferably 1 to 2% by weight. When the content is 0.5% by weight or less, the effect of reducing the pulverizability is less likely to appear, while when the content is 5% by weight or more, particles tend to be bonded and solidified. Not preferable.

The surfactant used in the granulated wettable powder of the present invention is not particularly limited, but those generally used as a wetting and dispersing agent for wettable powders can be used. For example, polycarboxylic acid, alkylnaphthalenesulfonic acid, alkylnaphthalenesulfonic acid formalin condensate, naphthalenesulfonic acid formalin condensate, ligninsulfonic acid, alkylbenzenesulfonic acid, lauryl sulfuric acid, dioctylsulfosuccinic acid, polyoxyethylene alkylaryl ether sulfuric acid, etc., And their alkali metal salts, ammonium salts or amine salts. These surfactants may be used alone or in combination of two or more.

In the granulated wettable powder of the present invention, a mineral powder or a water-soluble powder can be used as an extender, if necessary. As the mineral powder, diatomaceous earth, talc, clay, bentonite, calcium carbonate and the like are used. As the water-soluble powder, saccharides, urea, various salts and the like are used. Examples of the saccharides include lactose, fructose and glucose, and examples of the salts include alkali metal salts and ammonium salts of sulfuric acid, phosphoric acid, hydrochloric acid, nitric acid or carbonic acid. These extenders may be used alone or in combination of two or more.

If necessary, a binder, a grinding aid, a decomposition inhibitor, a coloring agent, a defoaming agent, etc. may be added as other auxiliary agents.

The pesticidal active ingredient used in the present invention is not particularly limited, but it is desirable that it is a solid at room temperature, and typical examples thereof are shown below, but the present invention is not limited thereto. Examples of the insecticide active ingredient include the following. (1) 2-tert-butyl-5- (4-tert-butylbenzylthio) -4-chloropyridazine-3
(2H) -one (generic name: pyridaben), (2) 1-naphthyl-N-methylcarbamate (generic name: NAC), (3) 3,7,9,13-tetramethyl-5,11-dioxa- 2,8,14-Trithia-4,7,9,12-
Tetraazapentadeca-3,12-diene-6,10-
Dione (generic name: thiodicarb), (4) 3-methyl-1,5-bis (2,4-xylyl)
-1,3,5-triazapenta-1,4-diene (generic name: amitraz), (5) 3,6-bis (2-chlorophenyl) -1,2,
4,5-tetrazine (generic name: clofentezine), (6) hexakis (β, β-dimethylphenethyl) distannoxane (generic name: fenbutatin oxide), (7) isopropyl 4,4′-dibromobenzylate (general) Name: Phenisobromolate);

The bactericidal active ingredients include the following: (1) 2,4'-Dichloro-α- (pyrimidin-5-yl) benzhydryl alcohol (generic name: phenalimol), (2) 8-hydroxyquinoline copper (generic name: oxine copper), (3) 5- Methyl-1,2,4-triazolo [3,4-
b] Benzenazole (generic name: tricyclazole), (4) 3- (3,5-dichlorophenyl) -N-isopropyl-2,4-dioxoimidazolidine-1-carboxamide (generic name: iprodione), 5) N-trichloromethylthiotetrahydrophthalimide (generic name: captan), (6) 2,6-dichloro-4-nitroaniline (generic name: CNA);

Examples of the herbicidal active ingredient include the following. (1) Ethyl = 5- (4,6-dimethoxypyrimidine-
2-ylcarbamoylsulfamoyl) -1-methylpyrazole-4-carboxylate (generic name: pyrazosulfuronethyl), (2) methyl 5-[[[[[(4,6-dimethoxy-2
-Pyrimidinyl) amino] carbonyl] amino] sulfonyl] -3-chloro-1-methyl-1-H-pyrazole-4-carboxylate (3) ethyl = (RS) -2- [4- (6-chloroquinoxaline- 2-yloxy) phenoxy] propionate (generic name: quizalofop-ethyl) (4) 2-chloro-2 ', 6'-diethyl-N- (2-
Bropoxyethyl) acetanilide (generic name: pretilachlor), (5) ammonium = DL-homoalanin-4-yl (methyl) phosphinate (generic name: glufosinate), (6) 5-tertiarybutyl-3- (2,4) -Dichloro-5-isopropoxyphenyl) -1,3,4-oxadiazolin-2-one (generic name: oxadiazon), (7) methyl-N- (3,4-dichlorophenyl) carbamate (generic name) : MCC), (8) 3-isopropyl-2,1,3-benzo-thiadiadinone- (4) -2,2-dioxide (generic name: bentazone), (9) 2,4-dichlorophenoxyacetic acid (general) Name: 2,
4-D), (10) 2-methyl-4-chlorophenoxyacetic acid (generic name: MCP),

(11) 2-methylthio-4,6-bis (isopropylamino) -s-triazine (generic name: promethrin), (12) 2-methylthio-4-ethylamino-6-isopropylamino-s-triazine (General name: ametrine), (13) 2-chloro-4,6-bis (ethylamino) -s
-Triazine (generic name: simazine), (14) 2-chloro-4-ethylamino-6-isopropylamino-s-triazine (generic name: atrazine), (15) 2-methylthio-4,6-bis (isopropyl) Amino) -s-triazine (generic name: promethrin) and the like. Further, depending on the purpose, the agrochemical active ingredient may be used alone or in combination of two or more kinds.

The content of the pesticidal active ingredient is preferably 1 to 90% by weight, more preferably 10 to 80% by weight, based on the pesticidal granular wettable powder of the present invention. The granulated wettable powder of the present invention is produced by the following method. That is, the first
As a method for producing the above, one or more kinds of ingredients selected from agrochemical active ingredients, ethylene glycol, propylene glycol or polyethylene glycol or polypropylene glycol ethylene glycol having a molecular weight of 1000 or less, surfactants, extenders, and other auxiliary agents. Is added in the required amount, mixed uniformly, and then pulverized. The fine pulverization can be performed by a dry pulverizer such as an impact pulverizer, a ball mill, a jet ohmizer. Then, an appropriate amount of water is added to the obtained fine powder, and the mixture is kneaded and kneaded, then granulated using a granulator and dried to obtain the desired product. Granulation can be carried out by a granulator such as an extrusion granulator, a pressure granulator, a fluidized bed granulator, a stirring granulator, a tumbling granulator and the like.

As the second production method, one or more components selected from a pesticide active ingredient, ethylene glycol, propylene glycol or polyethylene glycol or polypropylene glycol ethylene glycol having a molecular weight of 1000 or less in a suitable amount of water. ,
A surfactant, a bulking agent and other auxiliary agents are added in necessary amounts, and finely pulverized with a wet pulverizer. Fine grinding is a ball mill,
It can be performed by a wet pulverizer such as a sand grinder. Then, the resulting aqueous suspension may further contain, if necessary, one or more components selected from ethylene glycol, propylene glycol, polyethylene glycol having a molecular weight of 1000 or less, or polypropylene glycol ethylene glycol, a surfactant,
A desired product can be obtained by adding an appropriate amount of a filler and other auxiliary agents, mixing them, and spray-drying the mixture with a spray dryer.

As a third production method, one or more components selected from a pesticide active ingredient, ethylene glycol, propylene glycol or polyethylene glycol or polypropylene glycol ethylene glycol having a molecular weight of 1000 or less, in an appropriate amount of water,
A surfactant, a bulking agent and other auxiliary agents are added in necessary amounts, and finely pulverized with a wet pulverizer. Fine grinding is a ball mill,
It can be performed by a wet pulverizer such as a sand grinder. Then, an extender is added to the obtained aqueous suspension, if necessary, one or more components selected from ethylene glycol, propylene glycol, polyethylene glycol having a molecular weight of 1000 or less, or polypropylene glycol ethylene glycol, and a surfactant. ,
An appropriate amount is added together with a filler and other auxiliary agents to form a paste, which is mixed and kneaded, then granulated using a granulator and dried to obtain the desired product. Granulation can be performed by a granulator such as an extrusion granulator, a pressure granulator, a fluidized bed granulator, a stirring granulator, a tumbling granulator and the like.

The particle size of the granulated wettable powder of the present invention is not particularly limited, but is preferably 0.1 to 2 mm.

[0020]

The present invention will now be described with reference to specific examples, but the present invention is not limited to these examples. All parts are parts by weight. Example 1 97 parts of pyridaben (generic name) and 3 parts of white carbon are finely pulverized with a jet atomizer (manufactured by Seishin Enterprise Co., Ltd.). 70 parts of this finely pulverized product, 10 parts of a mixture of a copolymer of maleic acid and diisobutylene and polyoxyethylene styryl phenyl ether sulfate ester salt, polyoxyethylene alkylphenyl ether ammonium sulfate 2.5
Parts, ammonium sulfate 5 parts, diethylene glycol 2
And 10.5 parts of clay are mixed using a mixer, 30 parts of water is added and mixed, and then granulated using an extrusion type granulator equipped with a screen having a diameter of 0.5 mm. Fifty
After drying at 0 ° C, the granules are sized with a sieve of 20 to 50 mesh to obtain the granulated wettable powder of the present invention.

Example 2 97 parts of pyridaben (generic name) and 3 parts of white carbon are finely pulverized with a jet atomizer (manufactured by Seishin Enterprise Co., Ltd.). 70 parts of this finely pulverized product, 10 parts of a mixture of a copolymer of maleic acid and diisobutylene and polyoxyethylene styryl phenyl ether sulfate ester salt, polyoxyethylene alkylphenyl ether ammonium sulfate 2.5
Parts, ammonium sulfate 5 parts, triethylene glycol 2
And 10.5 parts of clay are mixed using a mixer, 30 parts of water is added and mixed, and then granulated using an extrusion type granulator equipped with a screen having a diameter of 0.5 mm. Fifty
After drying at 0 ° C, the granules are sized with a sieve of 20 to 50 mesh to obtain the granulated wettable powder of the present invention.

Example 3 97 parts of pyrazosulfuron-ethyl (generic name) and 3 parts of white carbon were used as a jet atomizer (manufactured by Seishin Enterprise Co., Ltd.).
Pulverize with. 75 parts of this finely ground product, 10 parts of a mixture of a copolymer of maleic acid and diisobutylene and polyoxyethylene styryl phenyl ether sulfate ester salt, 2.5 parts of polyoxyethylene alkylphenyl ether ammonium sulfate, 5 parts of ammonium sulfate, 2 parts of diethylene glycol After mixing 5.5 parts of clay using a mixer, 30 parts of water is added and mixed, and then granulated using an extrusion type granulator equipped with a screen having a diameter of 0.5 mm. After drying at 50 ° C, the particles are sized with a sieve of 20 to 50 mesh to obtain the granulated wettable powder of the present invention.

Example 4 97 parts of quizalofop-ethyl (generic name) and 3 parts of white carbon are finely pulverized with a jet omizer (manufactured by Seishin Enterprise Co., Ltd.). 75 parts of this finely ground product, 10 parts of a mixture of a copolymer of maleic acid and diisobutylene and polyoxyethylene styryl phenyl ether sulfate ester salt, 2.5 parts of polyoxyethylene alkylphenyl ether ammonium sulfate, 5 parts of ammonium sulfate, 2 parts of diethylene glycol After mixing 5.5 parts of clay with a mixer,
30 parts of water is added and mixed, and then granulated using an extrusion type granulator equipped with a screen having a diameter of 0.5 mm. 5
After drying at 0 ° C, the granules are sized with a sieve of 20 to 50 mesh to obtain the granulated wettable powder of the present invention.

Example 5 55 parts of pyridaben (common name), 2 parts of a mixture of a copolymer of maleic acid and diisobutylene and polyoxyethylene styryl phenyl ether sulfate ester salt, and 43 parts of water were mixed with a homomixer, and then sanded. Grind for 90 minutes with a grinder (manufactured by IMEX Co., Ltd.) to obtain a ground slurry. 74.9 parts of this ground slurry, 13.5 parts of a mixture of a copolymer of maleic acid and diisobutylene and polyoxyethylene styryl phenyl ether sulfuric acid ester salt, 2.5 parts of polyoxyethylene alkylphenyl ether ammonium sulfate, 10 parts of ammonium sulfate, 2 parts of diethylene glycol and 29.3 parts of clay are mixed using a mixer, and then granulated using an extrusion type granulator equipped with a screen having a diameter of 0.5 mm. After drying at 50 ° C, 20-5
The particles are sized with a 0 mesh sieve to obtain the granulated wettable powder of the present invention.

Example 6 Methyl 5-[[[[(4,6-dimethoxy-2-pyrimidinyl) amino] carbonyl] amino] sulfonyl]
-3-Chloro-1-methyl-1-H-pyrazole-4-
97 parts of carboxylate and 3 parts of white carbon are finely pulverized with a jet omizer (manufactured by Seishin Enterprise). 75 parts of this finely ground product, 10 parts of a mixture of a copolymer of maleic acid and diisobutylene and polyoxyethylene styryl phenyl ether sulfate ester salt, 2.5 parts of polyoxyethylene alkylphenyl ether ammonium sulfate, 5 parts of ammonium sulfate, dipropylene glycol After mixing 2 parts and 5.5 parts of clay using a mixer, 30 parts of water is added and mixed, and then granulated using an extrusion type granulator equipped with a screen having a diameter of 0.5 mm. After drying at 50 ° C., it is rectified with a 20-50 mesh sieve to obtain the granulated wettable powder of the present invention.

Example 7 97 parts of pyridaben (generic name) and 3 parts of white carbon are finely pulverized with a jet atomizer (manufactured by Seishin Enterprise Co., Ltd.). 70 parts of this finely pulverized product, 10 parts of a mixture of a copolymer of maleic acid and diisobutylene and polyoxyethylene styryl phenyl ether sulfate ester salt, polyoxyethylene alkylphenyl ether ammonium sulfate 2.5
Parts, ammonium sulfate 5 parts, ethylene glycol 2 parts,
After mixing 10.5 parts of clay with a mixer, water 30
Parts are added and mixed, and then granulated using an extrusion type granulator equipped with a screen having a diameter of 0.5 mm. After drying at 50 ° C, the particles are sized with a sieve of 20 to 50 mesh to obtain the granulated wettable powder of the present invention.

Example 8 97 parts of pyridaben (generic name) and 3 parts of white carbon are finely pulverized with a jet atomizer (manufactured by Seishin Enterprise Co., Ltd.). 70 parts of this finely pulverized product, 10 parts of a mixture of a copolymer of maleic acid and diisobutylene and polyoxyethylene styryl phenyl ether sulfate ester salt, polyoxyethylene alkylphenyl ether ammonium sulfate 2.5
Parts, ammonium sulfate 5 parts, propylene glycol 2
And 10.5 parts of clay are mixed using a mixer, 30 parts of water is added and mixed, and then granulated using an extrusion type granulator equipped with a screen having a diameter of 0.5 mm. Fifty
After drying at 0 ° C, the granules are sized with a sieve of 20 to 50 mesh to obtain the granulated wettable powder of the present invention.

Comparative Example 1 97 parts of pyridaben (generic name) and 3 parts of white carbon are finely pulverized with a jet atomizer (manufactured by Seishin Enterprise Co., Ltd.). 70 parts of this finely pulverized product, 10 parts of a mixture of a copolymer of maleic acid and diisobutylene and polyoxyethylene styryl phenyl ether sulfate ester salt, polyoxyethylene alkylphenyl ether ammonium sulfate 2.5
Parts, 5 parts of ammonium sulfate and 12.5 parts of clay were mixed using a mixer, then 30 parts of water were added and mixed, and then granulated using an extrusion type granulator equipped with a screen having a diameter of 0.5 mm. To do. After drying at 50 ° C, the particles are sized with a sieve of 20 to 50 mesh to obtain the granulated wettable powder of the present invention.

Comparative Example 2 97 parts of pyridaben (generic name) and 3 parts of white carbon are finely pulverized with a jet atomizer (manufactured by Seishin Enterprise Co., Ltd.). 70 parts of this finely pulverized product, 10 parts of a mixture of a copolymer of maleic acid and diisobutylene and polyoxyethylene styryl phenyl ether sulfate ester salt, polyoxyethylene alkylphenyl ether ammonium sulfate 2.5
Parts, 5 parts of ammonium sulfate, 2 parts of sodium salt of carboxymethyl cellulose (average molecular weight of 50,000) and 10.5 parts of clay were mixed using a mixer, then 30 parts of water was added and mixed, and then a screen having a caliber of 0.5 mm. Granulate using an extrusion type granulator equipped with. After drying at 50 ° C, the particles are sized with a sieve of 20 to 50 mesh to obtain the granulated wettable powder of the present invention.

Comparative Example 3 97 parts of pyridaben (generic name) and 3 parts of white carbon are finely pulverized with a jet omizer (manufactured by Seishin Enterprise Co., Ltd.). 70 parts of this finely pulverized product, 10 parts of a mixture of a copolymer of maleic acid and diisobutylene and polyoxyethylene styryl phenyl ether sulfate ester salt, polyoxyethylene alkylphenyl ether ammonium sulfate 2.5
Parts, 5 parts of ammonium sulfate, 2 parts of polyethylene glycol (average molecular weight 10,000), and 10.5 parts of clay were mixed using a mixer, then 30 parts of water was added and mixed, and then a screen having a diameter of 0.5 mm was attached. Granulate using an extrusion type granulator. After drying at 50 ° C, the particles are sized with a sieve of 20 to 50 mesh to obtain the granulated wettable powder of the present invention.

Comparative Example 4 97 parts of pyrazosulfuron-ethyl (generic name) and 3 parts of white carbon were jetted with an atomizer (manufactured by Seishin Enterprise Co., Ltd.).
Pulverize with. 70 parts of this finely pulverized product, 10 parts of a mixture of a copolymer of maleic acid and diisobutylene and a polyoxyethylene styryl phenyl ether sulfate ester salt, 2.5 parts of polyoxyethylene alkylphenyl ether ammonium sulfate sulfate, 5 parts of ammonium sulfate and clay 12. After mixing 5 parts using a mixer, 30 parts of water is added and mixed, and then granulated using an extrusion type granulator equipped with a screen having a diameter of 0.5 mm. After drying at 50 ° C, 20 ~
The granulated wettable powder of the present invention is obtained by sizing with a 50-mesh sieve.

Comparative Example 5 97 parts of quizalofop-ethyl (generic name) and 3 parts of white carbon are finely pulverized with a jet omizer (manufactured by Seishin Enterprise Co., Ltd.). 75 parts of this finely pulverized product, 10 parts of a mixture of a copolymer of maleic acid and diisobutylene and polyoxyethylene styryl phenyl ether sulfate ester salt, 2.5 parts of polyoxyethylene alkylphenyl ether ammonium sulfate sulfate, 5 parts of ammonium sulfate and clay 12. After mixing 5 parts using a mixer, 30 parts of water was added and mixed,
Next, granulation is performed using an extrusion type granulator equipped with a screen having a diameter of 0.5 mm. After drying at 50 ° C, 20-50
The particles are sized with a mesh sieve to obtain the granulated wettable powder of the present invention.

Comparative Example 6 Methyl 5-[[[[(4,6-dimethoxy-2-pyrimidinyl) amino] carbonyl] amino] sulfonyl]
-3-Chloro-1-methyl-1-H-pyrazole-4-
97 parts of carboxylate and 3 parts of white carbon are finely pulverized with a jet omizer (manufactured by Seishin Enterprise). 75 parts of this finely pulverized product, 10 parts of a mixture of a copolymer of maleic acid and diisobutylene and polyoxyethylene styryl phenyl ether sulfate ester salt, 2.5 parts of polyoxyethylene alkylphenyl ether ammonium sulfate sulfate, 5 parts of ammonium sulfate and clay 7. After mixing 5 parts using a mixer, 30 parts of water was added and mixed, and then the caliber of 0.
Granulate using an extrusion granulator equipped with a 5 mm screen. After drying at 50 ° C., it is rectified with a 20-50 mesh sieve to obtain the granulated wettable powder of the present invention.

Next, the underwater disintegration test and pulverization test were carried out on the preparations obtained in the Examples and Comparative Examples. Test Example 1 Disintegration test in water 1.0 g of a sample is accurately weighed. The weighed sample is put into a 100 ml graduated cylinder with a ground stopper, which contains 100 ml of 3 times hard water. After standing for 20 seconds, the graduated cylinder is reversed at a pace of once every two seconds, and the number of times of reversal until the granulated wettable powder is completely disintegrated is made disintegrating in water. A value with a small number of inversions is good. The result is first
Shown in the table.

Test Example 2 Powdering Test 10 g of a sample is accurately weighed. The weighed sample is put into a 150-mesh sieve (φ150 mm × 60 h) equipped with a saucer. Then, three porcelain balls having a diameter of 15 mm are gently put into the above-mentioned sieve. Cover and shake horizontally with a shaker (SR-II type, manufactured by Taiyo Kagaku Kogyo Co., Ltd.) at a frequency of 330 rpm for 5 minutes. The weight of the sample that has passed through a 150-mesh sieve is weighed with a balance having an accuracy of 0.01 g or less, and the pulverization rate (%) is calculated from the following formula. The smaller the powdering rate, the better.

Powdering ratio (%) = [Sample (g) passed through a 150-mesh sieve] / [Sample weighed (10 g)] × 100 The results are shown in Table 1.

Table 1 ─────────────────────────── Underwater disintegration Pulverization rate (times) (%) ───── ────────────────────── Example 1 5 1.75 Example 2 5 2.07 Example 3 3 1.74 Example 4 3 1.93 Example 5 6 1.80 Example 6 3 1.78 Example 7 5 1.82 Example 8 5 1.85 Comparative Example 1 5 4.82 Comparative Example 2 14 1.60 Comparative Example 3 17 1.73 Comparison Example 4 3 5.49 Comparative Example 5 3 4.96 Comparative Example 6 3 5.14 ────────────────────────────

[0038]

The use of the pesticidal granular wettable powder of the present invention makes it possible to reduce the powderability without lowering the disintegration property in water.

Claims (3)

[Claims] 1. A granular pesticide hydrate characterized in that a granular pesticidal composition containing one or more pesticide active ingredients contains ethylene glycol, propylene glycol or polyethylene glycol or polypropylene glycol having a molecular weight of 1000 or less. Agent. 2. One or more components selected from ethylene glycol, propylene glycol or polyethylene glycol or polypropylene glycol having a molecular weight of 1000 or less are added in an amount of 0.5 to 1 with respect to the total amount of the preparation.
The pesticidal granular wettable powder according to claim 1, which is contained in an amount of 0% by weight. 3. The pesticidal granular wettable powder according to claim 1, wherein the polyethylene glycol or polypropylene glycol having a molecular weight of 1,000 or less is diethylene glycol, triethylene glycol or dipropylene glycol.