JPH0786081B2 - Pesticide composition in suspension - Google Patents

Description

TECHNICAL FIELD The present invention relates to a pesticidal composition in suspension which contains a pesticidal active ingredient which is poorly soluble in water as an active ingredient, has a low viscosity and retains stable properties over a long period of time. .

[Conventional technology]

Conventionally, agricultural chemical raw materials that are poorly soluble in water or organic solvents are difficult to be made into solutions or emulsions, and thus have been used in the form of powders, wettable powders and the like. Among them, powders have many advantages such as being able to spray the formulation as it is, and being easy to formulate, but have drawbacks such as scattering to the surroundings at the time of spraying. In addition, since the wettable powder is diluted with water and then sprayed, there is an advantage that the pesticide active ingredient uniformly and efficiently adheres to the crop using water as a medium, but it is powdered when the wettable powder is diluted with water. However, it is not preferable in terms of user safety and health.

On the other hand, in recent years, many suspension-type agrochemical compositions in which finely divided agrochemical active ingredients are suspended in water or the like, that is, a liquid formulation form called a sol or flowable (hereinafter sometimes referred to as a sol formulation) are often used. It came to be used. The sol preparation is diluted with water like the wettable powder or is sprayed in the state of undiluted solution. Since this preparation is liquid, it does not cause powdering when diluted with water, and it is an excellent preparation form in that it is easier to measure than a wettable powder.

Conventionally, as a sol formulation, a formulation obtained by adding water, a solvent, a surfactant and a water-soluble polymer such as carboxymethylcellulose to a poorly water-soluble pesticide active ingredient and suspending it (Japanese Patent Publication No.
58-24401), a nonionic surfactant, a heteropolysaccharide gum, and a powdered silica and suspended in water (JP-A-49-133531), a nonionic surfactant and a heteropolysaccharide gum. And a suspension suspended in water (JP-A-52-128226), a suspension added with a surfactant and colloidal hydrous aluminum silicate (JP-B-54-1)
No. 1368) and so on.

[Problems to be solved by the invention]

However, none of the sol preparations produced by these known techniques can satisfy various physical properties required for the sol preparation, and the storage stability of the preparation is improved, resulting in long-term suspension uniformity. A high viscosity is required in order to keep it for a long time. Therefore, it is not easy to fill the storage container, the remaining amount of the formulation in the container is large when the formulation is taken out from the container, and it is not easy to check the remaining amount of the drug solution in the container, and the weighing becomes inaccurate. Disturbance occurs in the undiluted solution spraying in the air. Further, if the viscosity is lowered to the extent that there is no problem in practical use, the storage stability becomes poor, and the precipitated particles eventually form a hard caking layer that cannot be redispersed.

The present invention has been made to solve the problems of these conventional techniques, and satisfies the physical properties required for a sol formulation,
It is an object of the present invention to provide a pesticidal suspension composition which is excellent in storage stability and can be adjusted to have a viscosity that causes no practical problems.

[Means for solving problems]

 The present invention is the following agricultural chemical composition in suspension.

(1) One or more kinds of poorly water-soluble pesticide active ingredient, bentonite mineral substance and heteropolysaccharide gum are contained, and the mixing ratio of bentonite mineral substance and heteropolysaccharide gum is 1: 0.05 to 2 by weight. A pesticide composition in the form of a suspension.

(2) 90% by weight of one or more kinds of poorly water-soluble pesticide active ingredients, bentonite mineral substances, heteropolysaccharide gum, and methane hydrocarbons having 9 to 17 carbon atoms
Contains the above hydrocarbon solvent, the blending ratio of bentonite mineral and heteropolysaccharide gum is 1: 0.05 by weight.
2. A pesticide composition in suspension, which is 2.

The physical properties required for sol preparations are as follows.

Excellent storage stability. Therefore, even if it is stored for a long period of time, the suspended particles do not settle to form a separation layer from the solvent, and the precipitated particles do not form a hard caking layer that cannot be redispersed.

The formulation has low viscosity. This makes it easy to fill the storage container with the formulation, and when the formulation is taken out of the container, the remaining amount in the container is small and can be used without waste.
In addition, accurate metering is possible, the remaining amount in the container can be easily confirmed, it has excellent dispersibility in water, and the nozzle part has good passability when spraying the undiluted solution in the air, and a certain amount of drug can be sprayed. To be. Such a viscosity is 10
~ 300 cPs, more preferably 10-200 cPs.

In the sol formulation, when the heteropolysaccharide gum is used alone, in a low viscosity range of about 10 to 300 cPs which is a desirable viscosity in handling and use scenes,
A formulation having good storage stability cannot be obtained, and when a bentonite mineral substance is used alone, the viscosity becomes high over time, which is not preferable. In the present invention, by using them together in a blending ratio within a specific range, or by further adding a hydrocarbon solvent containing 90% by weight or more of a methane series hydrocarbon having 9 to 17 carbon atoms, excellent storage stability, Moreover, they found that good physical properties such as low viscosity were obtained, and completed the invention.

The pesticidal active ingredient applicable in the present invention is not particularly limited as long as it is poorly soluble in water, and the compounding amount is usually 10 to 60% by weight based on the pesticidal composition in suspension. Examples of such agrochemical active ingredients include 5-methyl-1,2,4-triazolo (2,4
-B) benzothiazole (tricyclazole), 2-methyl-3'-isopropoxybenzanilide (mepronil), 4,5,6,7-tetrachloroisophthalonitrile (TP
N), Manganese ethylene bis (dithiocarbamate) (manneb), dimethyl 4,4'-O-phenylene bis (3-thioallophanate) (thiophanate methyl), 8-oxyquinoline copper, cupric hydroxide, sulfur, etc. Disinfectant: dimethyl-2-chloro-1- (2,4-dichlorophenyl) vinyl phosphate (dimethylvinphos), 1-naphthylmethylcarbamate (NAC), m-tolylmethylcarbamate (MTMC), 3,4- Xylylmethyl carbamate (MPMC), O, S-dimethyl = N-acetylphosphoramidothioate (acephate), 2-sec-butyl-4,6-dinitrophenyl-3-methylcrotonate (vinapacryl), tricyclohexyl Tin hydroxide (Plectran), S-4-phenoxybutyl = N,
N-dimethyl thiocarbamate (phenothiocarb),
2-sec-Butylphenyl-N-methylcarbamate (B
PMC), 2- (4-ethoxyphenyl) -2-methylpropyl-3-phenoxybenzyl ether (ethofenprox) and other insecticides or acaricides; 2-chloro-4,6-bis (ethylamino)- 1,3,5-triazine (CAT), 2-chloro-4-ethylamino-6-
Isopropylamino-1,3,5-triazine (gezaprim), N- (1-ethylpropyl) 3,4-dimethyl-2,6
Examples include, but are not limited to, herbicides such as dinitroaniline (Stomp). These pesticidal active ingredients may be used alone or in combination of two or more kinds, and in this case, a mixture agent exceeding the kinds of fungicides, insecticides and herbicides is also possible.

The bentonite mineral material used in the present invention is a group of typical minerals constituting clay, and means montmorillonite group minerals and those containing them as a main component, and the structure thereof is a phyllosilicate mineral having a three-layer structure. In some cases, it may be partially replaced with another metal such as magnesium, iron, or sodium, and may be treated with sodium or the like. Particularly in the present invention, high-purity sodium montmorillonite containing a large amount of sodium is preferable.

The trade names of these available bentonite minerals are Kunibond, Kunigel V1, Kunipia F (above, Kunimine Industry Co., Ltd.), Bentonite Fuji, Bentonite Akagi, Bentonite Hotaka (above, Toyonyo Corp.),
Examples include Sanbentonite K-1, Sanbentonite KG-1, Sanbentonite KA-1 (all manufactured by Sanbentonite Industry Co., Ltd.), and acid clay NA (manufactured by Nippon Talc Co., Ltd.).

Heteropolysaccharide gum used in the present invention is a polysaccharide such as xanthan gum, guar gum, locust bean gum, for example xanthan gum is a linear high molecular weight polysaccharide produced by the fermentation action of microorganisms, the molecular weight is about 20.
The constituent monosaccharides consist of glucose, mannose and glucuronic acid.

The amount of the bentonite mineral substance and the heteropolysaccharide gum used in the present invention is usually about 0.01 to 5% by weight with respect to the pesticide product, and the viscosity of the formulation is 10 to 300 cPs, preferably 10 to 200 cPs. Adjust the blending amount so that

Further, the blending ratio of the bentonite mineral substance and the heteropolysaccharide gum is, by weight ratio, effective for the bentonite mineral substance 1 in the range of 0.05 to 2 of the heteropolysaccharide gum, and particularly preferably 0.1 to 0.5. This blending ratio is extremely important, and when it is out of this range, the feature on the side with a large blending ratio appears strongly and only a preparation having the same problems as in the prior art can be obtained.

The pesticidal composition in the form of a suspension according to the first aspect of the present invention is obtained by suspending or dissolving the above pesticidal active ingredient, bentonite mineral substance and heteropolysaccharide gum in an aqueous solvent. In the present invention, the aqueous solvent is water or water to which another solvent is added. Water is usually added in an amount of 20 to 60% by weight, preferably 30 to 40% by weight, based on the pesticide composition.

The suspension-type agricultural chemical composition of the second invention of the present invention is obtained by further mixing the above composition with a hydrocarbon solvent having 90% by weight or more of a methane series hydrocarbon having 9 to 17 carbon atoms and suspending it in an aqueous solvent. By incorporating such a hydrocarbon solvent, the dispersion and storage stability when the sol preparation is dropped in water is further improved.

Examples of the hydrocarbon solvent having 90% by weight or more of methane series hydrocarbons having 9 to 17 carbon atoms include petroleum hydrocarbon solvents,
In particular, the following compositions and properties are preferable.

(Composition) Paraffinic hydrocarbon 99 (% by weight) Naphthenic hydrocarbon 0.5 Aromatic hydrocarbon 0.5 (Paraffin hydrocarbon) C _{9 to} C ₁₇ (95% distillation temperature of the above composition) 270 ° C of hydrocarbon solvent The compounding amount is usually 1 to 25 with respect to the agrochemical composition.
It is about 5% by weight, preferably about 5 to 20% by weight.

In the suspension agricultural chemical composition of the present invention, in order to disperse the agricultural chemical active ingredient in water, as the surfactant, sodium lignin sulfonate, sodium alkylnaphthalene sulfonate, polyoxyethylene styrenated phenyl ether sulfate, malein. Anionic surfactants such as acid styrene copolymers, and nonionic surfactants such as polyoxyethylene nonylphenyl ethers, polyoxyethylene fatty acid esters, and sorbitan oleic acid esters can be used alone or in combination of two or more. The blending amount is usually 1 to 10% by weight of the pesticide composition.

In addition, in the pesticidal composition of the present invention, a hydrophilic organic solvent such as propylene glycol, ethylene glycol and glycerin, and an antifreezing agent such as ammonium sulfate and ammonium chloride are usually used in an amount of 5 to 15 relative to the pesticidal composition.
%, A defoaming agent such as silicone is usually added to the agrochemical composition in an amount of 100 to 1000 ppm, and a coloring agent, a decomposition inhibitor and the like can be added in a necessary amount.

The pesticide composition in suspension of the present invention has a formulation viscosity of 10 at 20 ° C. for easy handling and use as described above.
~ 300 cPs, preferably 10-200 cPs. The formulation viscosity here is the B type rotational viscometer (BL type, Tokyo Keiki Co., Ltd.).
The value is measured using the
2. Measure the viscosity at a rotor speed of 30 rpm and a formulation temperature of 20 ° C.

Next, an example of the method for producing the pesticide composition in suspension of the present invention will be shown.

First, a predetermined amount of bentonite mineral substance and heteropolysaccharide gum are added to a predetermined amount of water and dispersed with a stirrer. Next, add a surfactant and an agrochemical raw material that has been roughly crushed in advance, and further add an antifreezing agent, an antifoaming agent, etc.
Mix and disperse with a high speed stirrer. This mixture is then wet-milled, for example, Sand Grinder SL type (Igarashi Kikai Co., Ltd., trade name), Attritor MA-1S type (Mitsui Miike Seisakusho, trade name), Dynomill KDL type (WAB). The target formulation is obtained by wet pulverization using a commercially available product (trade name, etc.) so that most of the agricultural chemical raw material has an average particle size of 10 μm or less, preferably 0.1 to 7 μm.

The order of adding the raw materials such as the drug substance and the surfactant may be appropriately changed depending on the convenience of the process such as foaming.
The bentonite mineral substance and the heteropolysaccharide gum are preferably sufficiently dispersed or dissolved in water beforehand.

〔Example〕

Hereinafter, the present invention will be described in more detail with reference to Examples. All "parts" in the examples are "parts by weight".

Example 1 0.4 parts of Kunipia F (described above) and 0.1 part of xanthan gum were added to 4 parts of water.
2-Methyl-mixed and dispersed in 8.5 parts and coarsely crushed
40 parts of 3'-isopropoxybenzanilide, 3.5 parts of sodium β-naphthalene sulfonate formalin condensate, 0.5 parts of sodium alkylbenzene sulfonate, 7 parts of ethylene glycol and silicone AF-118N
(Asahi Chemical Industry Co., Ltd., trade name) was added to the preparation at 200 ppm, mixed with a high-speed stirrer for 30 minutes, and then ground with a wet grinder to obtain a homogeneous sol preparation.

Example 2 0.2 parts of Kunipia F (described above) and 0.1 part of xanthan gum are mixed with 3 parts of water.
8.7 parts were mixed and dispersed, and coarsely pulverized 2-methyl-
40 parts of 3'-isopropoxybenzanilide, 3.5 parts of sodium β-naphthalene sulfonate formalin condensate, 0.5 parts of sodium alkylbenzene sulfonate, 7 parts of ethylene glycol, methane hydrocarbons having 11 to 13 carbon atoms 96
Petroleum hydrocarbon solvent containing wt% (Nippon Petrochemical Co., Ltd.)
10 parts), 200 ppm of silicone AF-118N was added to the formulation, and the mixture was mixed with a high-speed stirrer for 30 minutes.
It was crushed with a wet crusher to obtain a homogeneous sol preparation.

Example 3 0.7 parts of Sun Bentonite KA-1 (supra), 0.1 of guar gum
3 parts were mixed and dispersed in 68.17 parts of water, and coarsely pulverized into 2
Methyl-3'-isopropoxybenzanilide 16 parts, 5
-Methyl 1,2,4-triazolo (3,4-b) benzothiazole (4 parts), polyoxyethylene styrenated phenyl ether sulfate (3 parts) and ethylene glycol (8 parts) are added, and silicone AF-118N is added to the formulation at 500 ppm. In addition, after mixing with a high-speed stirrer for 30 minutes, it was crushed with a wet crusher to obtain a homogeneous sol preparation.

Example 4 Sun Bentonite KA-1 (previously described) 0.5 part, guar gum 0.1
3 parts were mixed and dispersed in 58.37 parts of water, and coarsely pulverized in this
Methyl-3'-isopropoxybenzanilide 16 parts, 5
-Methyl-1,2,4-triazolo (3,4-b) benzothiazole 4 parts, polyoxyethylene styrenated phenyl ether sulfate 3 parts, ethylene glycol 8 parts, carbon number 11-
10 parts of petroleum hydrocarbon solvent containing 96% by weight of 13 methane hydrocarbons, 500 ppm of silicone AF-118N was added to the formulation, mixed with a high-speed agitator for 30 minutes, and then pulverized with a wet pulverizer. A homogeneous sol formulation was obtained.

Example 5 Kunipia F (previous section) 0.5 part, locust bean gum 0.15
Part was mixed and dispersed in 57.35 parts of water, and coarsely pulverized into 30 parts of dimethyl-2-chloro-1- (2,4-dichlorophenyl) vinyl phosphate, 2 parts of maleic acid styrene copolymer, and polyoxyethylene nonylphenyl ether. Two
Parts and 8 parts of propylene glycol were added, 300 ppm of silicone AF-118N was added to the formulation, mixed for 30 minutes with a high-speed stirrer, and then pulverized with a wet pulverizer to obtain a homogeneous sol formulation.

Example 6 Bentonite Fuji 0.7 parts, xanthan gum 0.07
Part was mixed and dispersed in 49.23 parts of water, and coarsely pulverized to this.
Methyl-1,2,4-triazolo (3,4-b) benzothiazole 12 parts, 2- (4-ethoxyphenyl) -2-methylpropyl-3-phenoxybenzyl ether 10 parts, sodium ligninsulfonate 2 parts, Add 1 part of polyoxyethylene nonyl phenyl ether, 10 parts of ethylene glycol, 15 parts of petroleum hydrocarbon solvent containing 98% by weight of methane hydrocarbon having 13 to 14 carbon atoms, and add silicone AF-118N.
Was added to the formulation at 200 ppm, mixed for 30 minutes with a high-speed stirrer, and then pulverized with a wet pulverizer to obtain a homogeneous sol formulation.

Reference Example 1 The amount of xanthan gum of Example 1 was changed from 0.1 part to 0.01 part, and water was changed from 48.5 parts to 48.59 parts.
A homogeneous sol formulation of 3'-isopropoxybenzanilide was obtained.

Reference Example 2 Kunipia F of Example 1 was not added, and xanthan gum was added.
A homogeneous sol formulation of 2-methyl-3'-isopropoxybenzanilide was obtained by changing the amount of water from 4 parts to 48.7 parts while changing the content from 0.1 parts to 0.3 parts.

Reference Example 3 Knypia F of Example 1 was changed from 0.4 parts to 0.04 parts and water was changed from 48.5 parts to 48.86 parts to prepare 2-methyl-3 ′.
A homogeneous sol formulation of isopropoxybenzanilide was obtained.

Reference Example 4 The xanthan gum of Example 1 was not added, and Kunipia F was added.
A uniform sol preparation of 2-methyl-3'-isopropoxybenzanilide was obtained by changing the amount from 0.4 parts to 1.2 parts and water from 48.5 parts to 47.8 parts.

Reference Example 5 0.4 parts of Kunipia F and 0.1 part of xanthan gum of Example 1 were replaced with 0.1 part of carboxymethyl cellulose, and water was changed from 48.5 parts to 48.9 parts to give 2-methyl-
A homogeneous sol formulation of 3'-isopropoxybenzanilide was obtained.

Reference Example 6 Kunipia F of Example 2 was changed from 0.2 parts to 0.5 parts, xanthan gum was changed from 0.1 parts to 0.02 parts, and water was changed from 38.7 parts to 38.48 parts, and 2-methyl-3′-isopropoxybenzanilide was homogeneous. A sol formulation was obtained.

Reference Example 7 Kunipia F of Example 2 was not added, and xanthan gum was added.
Change from 0.1 to 0.2 parts, and add 38.8 parts of water to 2
A homogeneous sol formulation of -methyl-3'-isopropoxybenzanilide was obtained.

Reference Example 8 Kunipia F of Example 2 was changed from 0.2 parts to 0.05 parts, xanthan gum was changed from 0.1 parts to 0.12 parts, and water was added to 38.7
From 38 parts to 38.83 parts, a homogeneous sol formulation of 2-methyl-3'-isopropoxybenzanilide was obtained.

Reference Example 9 Xanthan gum of Example 2 was not added, and Kunipia F was added.
A uniform sol preparation of 2-methyl-3'-isopropoxybenzanilide was obtained by changing the amount from 0.2 parts to 0.6 parts and water from 38.7 parts to 38.4 parts.

Reference Example 10 0.2 parts of Kunipia F of Example 2 and 0.1% xanthan gum
Part was replaced with carboxymethylcellulose 0.1 part, and water was changed from 38.7 parts to 38.9 parts to give 2-methyl-
A homogeneous sol formulation of 3'-isopropoxybenzanilide was obtained.

Reference Example 11 96% by weight of methane hydrocarbon having 11 to 13 carbon atoms in Example 2
Petroleum-based hydrocarbon solvent including Kunipia F is added to 0.
2 parts and 0.1 part of xanthan gum were replaced with 0.1 part of carboxymethyl cellulose, and water was changed from 38.7 parts to 48.9 parts to obtain a homogeneous sol preparation of 2-methyl-3′-isopropoxybenzanilide.

Reference Example 12 Sanbentonite KG-1 of Example 3 was added from 0.7 parts to 0.05 parts, and water was added from 68.17 parts to 68.82 parts, and 2-methyl-
3'-isopropoxybenzanilide, 5-methyl-1,
A homogeneous sol formulation of 2,4-triazolo (3,4-b) benzothiazole was obtained.

Reference Example 13 The guar gum of Example 3 was changed from 0.13 parts to 0.02 parts, and water was added to 6 parts.
From 8.17 parts to 68.28 parts, a homogeneous sol formulation of 2-methyl-3'-isopropoxybenzanilide, 5-methyl-1,2,4-triazolo (3,4-b) benzothiazole was obtained.

Next, test examples and test results performed on the samples prepared in Examples 1 to 6 and Reference Examples 1 to 13 will be shown.

Test Example 1 Measurement of Storage Stability The sol preparation was placed in a 500 ml glass bottle and stored in a thermostat at 40 ° C. for 2 months, and the separation and sedimentation property of the sol preparation was measured every month. The investigation was calculated by the ratio (%) of the height of the supernatant part to the height of the whole liquid. After the measurement was completed, the glass rod was gently put in and the presence or absence of the hard caking layer was confirmed.

Storage stability is better the smaller the proportion of the supernatant,
Further, the formation of the hard caking layer is unsuitable as a sol formulation.

Test Example 2 Viscosity Measurement After the sample used in Test Example 1 was inverted 30 times,
The viscosity was measured. In this case, the same operation was performed on the hard caking layer formed, that is, the hard caking layer was measured with a glass rod or the like without breaking or dispersing.

A B type rotational viscometer (BL type, manufactured by Tokyo Keiki Co., Ltd.) was used for the measurement, and the measurement conditions were rotor No. 2, rotor rotation speed 30 rpm, and formulation temperature 20 ° C.

Test Example 3 Dispersibility in Water 250 ml of water was placed in a graduated cylinder of 250 ml volume, and the sol preparation was added dropwise with a pipette to observe the dispersed state, and the following four-stage evaluation was performed.

⊚: The dispersed state is extremely good. The drug disperses so as to diffuse in water.

○: The dispersed state is good. The drug drops in the form of droplets while partially diffusing in the water, but is dispersed by the time it reaches the bottom.

Δ: The dispersion state is a little bad. Most of the drug drops to the bottom in the form of droplets, but it is dispersed by shaking the measuring cylinder.

X: The dispersion state is bad. The drug drops to the bottom in the form of droplets and does not disperse easily when the measuring cylinder is shaken.

The better the dispersed state, the more preferable.

Test Example 4 Measurement of Remaining Amount in Storage Container 500 ml of sol preparation was placed in a 500 ml polyethylene container for general liquid pesticide storage with a diameter of 6.5 cm and a height of 15 cm, and stored in a 40 ° C. incubator for 2 months and stored for 1 month. The storage container remaining amount was measured for each. The method is to repeat the inversion of the polyethylene container 30 times, then invert the container and take out the sol formulation, measure the weight when the interval of droplets falling from the mouth of the container is 10 seconds or more, and measure the polyethylene container. The remaining weight of the storage container was subtracted from the weight of the storage container. In this case, the same operation was carried out for the hard caking layer formed and the gelled one, and the weight of the hard caking layer portion and the gelled portion were taken as the remaining amount of the storage container.

The smaller the remaining amount in the storage container, the more preferable.

The above test results are shown in Table 1.

From the results shown in Table 1, it can be seen that the examples have better dispersibility and storage stability than the reference examples, and have low viscosity and good handleability. In particular, as is clear by comparing Examples 3 and 4, it can be seen that even more excellent effects can be obtained by adding a hydrocarbon solvent.

[Effects of the Invention] As described above, according to the pesticide composition in suspension of the present invention, the following effects can be obtained.

Even if it is stored for a long period of time, it hardly causes sedimentation and separation, and does not form an undispersible hard caking layer.

Low viscosity. Therefore, in the manufacturing scene, a) productivity is improved by improving wet grinding efficiency.

b) It is easy to fill and package the storage container.

In use, c) Stable pest control effect can be obtained by accurate measurement.

d) It is easy to check the remaining amount of the drug solution in the container.

e) Good dispersibility in water and easy preparation of spray liquid.

f) In spraying the undiluted solution in the air, there is no clogging in the spraying device and stable drug spraying is possible.

 It has stable viscous properties over a long period of time.

A mixture of a hydrocarbon solvent containing 90% by weight or more of methane-series hydrocarbons having 9 to 17 carbon atoms provides a further excellent effect.

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Claims (4)

[Claims] 1. A one or more kind of poorly water-soluble pesticide active ingredient, bentonite mineral substance and heteropolysaccharide gum are contained, and the blending ratio of bentonite mineral substance and heteropolysaccharide gum is 1: 0.05 to 2 by weight. A pesticidal composition in the form of a suspension. 2. The pesticidal composition in suspension according to claim 1, wherein the viscosity of the preparation is 10 to 300 cPs. 3. One or more kinds of sparingly water-soluble pesticide active ingredients, bentonite mineral substances, heteropolysaccharide gum, and 90% by weight of methane hydrocarbons having 9 to 17 carbon atoms.
Contains the above hydrocarbon solvent, the blending ratio of bentonite mineral and heteropolysaccharide gum is 1: 0.05 by weight.
2. A pesticide composition in suspension, which is 2. 4. The suspended pesticide composition according to claim 3, wherein the formulation has a viscosity of 10 to 300 cPs.