JPH05155706A - Agricultural chemical composition - Google Patents

Abstract

PURPOSE:To obtain an agricultural chemical composition being readily diluted with both water and an oil, having excellent suspension in the same manner as water, having large use value in an agricultural field by blending an agricultural chemical such as fungicide, insecticide or acaricide with a polyhydric alcohol fatty acid ester. CONSTITUTION:An agricultural chemical such as thiophanate, triflumizole or hexythiazox is mixed with a polyhydric alcohol fatty acid ester (e.g. sorbitan monooleate or glycerol monostearate) to give an agricultural chemical composition. The fatty acid ester of the polyhydric alcohol has preferably 3-8 HLB. The amount of the composition is preferably about 5-20wt.%. In the case the agricultural chemical composition is solid at normal temperature, the composition is used as it is and in the case of liquid, the composition is adsorbed on a carrier having high oil absorption ability and can be used in a powdery state.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an agrochemical composition which is easily diluted with water or oil.

[0002]

2. Description of the Related Art In recent years, particularly in the banana areas of Central and South America, a method of diluting a pesticide in mineral oil or the like and spraying it by aircraft has been adopted for the purpose of labor saving and enhancement of efficacy. Pesticide products for spraying include emulsions in which the pesticide raw material and surfactants are dissolved in a solvent, wettable powders obtained by mixing the pesticide raw material with mineral carrier or surfactant, and jet milling, and pesticides. Granule wettable powder (dry flowable agent) formed by mixing a drug substance with a surfactant or a mineral carrier, or a pesticide drug with a high concentration of a surfactant, a mineral carrier, an organic polymer, etc. There is a thick suspension agent (flowable agent) dispersed in water at. However, since these agents are all preparations for diluting with water, they are not suitable for use in the method of diluting with mineral oil widely used in Central and South America.

[0003]

Recently, the method of diluting pesticides into oils such as mineral oil at a high concentration in a banana area in Latin America, and spraying them by aircraft is labor-saving and effective in spraying pesticides. It is very effective for enhancing the pollution and preventing environmental pollution. However, since all pesticide preparations as diluents are formulated to be diluted in water, they are not easily diluted in oils such as mineral oils, especially wettable powders and flowable agents are violent in oil. It could not be used to agglomerate. An object of the present invention is to provide an agrochemical composition that is easily diluted with water and oil.

[0004]

Means for Solving the Problems The inventors of the present invention have made extensive studies to solve these problems and completed the present invention. That is, the present invention is an agrochemical composition characterized by containing a fatty acid ester of polyhydric alcohol. As the pesticide raw material in the present invention, any of a bactericide, an insecticide and an acaricide can be used. For example, as fungicides, benzimidazole-type thiophanetomethyl, benomyl, thiabendazole, etc., ethylene bis-dithiocarbamate-type Zineb, maneb, manzeb, polycarbamate, etc., and dimethyldithiocaline. -Bamate type diram, thiuram, etc., dicarboximide type vinclozolin, iprodione, procymidone, etc., triazole type triadimefone, bittertanol, hexaconazole, propiconazole, etc., imidazole type And triflumizole, prochloraz, etc. In addition, as an insecticide, organophosphorus MEP, DDV
P, diazinon, salicion, etc., pyrethroid type permethrin, fenvalerate, etofenprox, etc., carbamate type NAC, MTMC, BPM
Examples thereof include C, mesomil, cartap, and the like, and benzoylphenylurea-based diflubenzuron, teflubenzuron, and the like. Examples of the acaricide include quelsen, phenisobromolate, tetradiphone, BPPS, hexithiazox and the like.

These pesticide raw materials have no problem when they are solid at room temperature, but when they are liquid, they may be adsorbed on a carrier having a large oil absorption capacity, such as silicon oxide. The content of the pesticide raw material in the formulation is 1 to 90% by weight as in the case of ordinary wettable powders.
(Hereinafter referred to as “%”), and preferably 10 to 80%. The fatty acid ester of polyhydric alcohol used for diluting both water and oil has a fatty acid portion of C ₈ -C.
₁₈ straight or branched, saturated or unsaturated fatty acids such as caprylic acid, lauric acid, palmitic acid, myristic acid, stearic acid, isostearic acid,
Examples thereof include oleic acid, sesquioleic acid, linoleic acid, and linoleic acid, and the polyhydric alcohol has two or more hydroxyl groups. For example, glycerin, pentaerythritol, diglycerin, diethylene glycol, triethylene glycol. , Sorbitan, sorbitol, sugars and the like.

As the polyhydric alcohol fatty acid ester used in the present invention, any of the above-mentioned compounds can be used, but those having HLB of 2 to 9 representing the balance between hydrophilicity and lipophilicity are preferred. Good, and preferably 3-8. Further, the addition amount in the formulation is preferably 2 to 30%, preferably 5
~ 20% is good. Further, in the case of a liquid, it can be adsorbed on a carrier having a large oil absorption ability to be used in the form of powder.

As the surfactant, all of the anionic and nonionic compounds used in ordinary wettable powders can be used. For example, metals of lignin sulfonic acid (Na, Ca,
Mg salt), metal of alkylallyl sulfonic acid (Na,
Ca, Mg, etc.) salts and ammonium salts, alkylsulfonic acid metal (Na, Ca, Mg, etc.) salts and ammonium salts,
Dialkyl sulfosuccinic acid metals (Na, Ca, Mg
Etc.) Anionic surfactants such as salts, polyoxyethylene (hereinafter referred to as POE) alkyl ether, POE alkyl ester, POE alkylallyl ether, POE
It is a nonionic surfactant such as castor oil ether and POE sorbitan ether. Further, the amount used in the formulation is similar to that of a normal wettable powder and is preferably 2 to 30%, preferably 5 to 2
0% is good.

As the bulking agent, all of those used in ordinary wettable powders can be used, but preferably those which are calcined to have a small amount of attached water. For example, clay, talc,
Examples include calcium carbonate, diatomaceous earth, calcined clay, and calcined diatomaceous earth. The pesticidal composition of the present invention can be produced by the same method as that for ordinary wettable powders. That is, it can be produced by mixing the pesticide raw material, the polyhydric alcohol fatty acid ester of the present invention, the surfactant and the extender, and pulverizing.

[0009]

The present invention will be described in detail with reference to the following examples.
The invention is not limited to these examples. Example 1 70 g of thiophanate methyl, sorbitan monooleate [Newcol 80 adsorbed on silicon dioxide at 50%]
(HLB: 4.6); Nippon Emulsifier Co., Ltd.] 10 g,
7 g of POE alkylphenyl ether formalin condensate adsorbed on silicon dioxide at 50% and 13 g of calcined diatomaceous earth were mixed in a vinyl bag and then pulverized with a jet pulverizer to obtain a target pesticide composition.

Example 2 30 g of triflumizole, glycerin monostearate [Rheodor MS-6 adsorbed on silicon dioxide at 50%]
0 (HLB: 3.8); manufactured by Kao Corporation] 10 g, POE alkyl ether 1 adsorbed on silicon dioxide at 50%
After mixing 0 g and 50 g of calcium carbonate in a vinyl bag, the mixture was pulverized with a jet pulverizer to obtain the target agricultural chemical composition.

Example 3 10 g of hexithiazox, sorbitan monostearate (Newcol 60 adsorbed on silicon dioxide at 50%)
(HLB: 4.6); Nippon Emulsifier Co., Ltd.] 10 g,
7 g of POE alkylphenyl ether adsorbed on silicon dioxide at 50% and 73 g of calcined diatomaceous earth were mixed in a vinyl bag and then pulverized with a jet pulverizer to obtain a target pesticide composition.

COMPARATIVE EXAMPLE 1 In the formulation of Example 1, 10 g of calcined diatomaceous earth was used in place of 10 g of sorbitan monooleate adsorbed on silicon dioxide at 50%, mixed in a vinyl bag, and then jetted. It was crushed with a crusher to obtain an agricultural chemical composition.

Comparative Example 2 In the formulation of Example 2, 50% (w / w) was added to silicon dioxide.
A mixture containing 10 g of calcium carbonate instead of 10 g of glycerin monostearate adsorbed in w) was mixed in a vinyl bag and then pulverized with a jet pulverizer to obtain an agrochemical composition.

Comparative Example 3 In the formulation of Example 3, 50% (w / w) was added to silicon dioxide.
A mixture containing 10 g of calcined diatomaceous earth instead of 10 g of sorbitan monostearate adsorbed in w) was mixed in a vinyl bag and then ground with a jet grinder to obtain an agrochemical composition.

[0015]

EFFECT OF THE INVENTION Test Example 1 Suspension Stability Test Regarding the agrochemical compositions of Examples 1 to 3 and Comparative Examples 1 to 3, water (3 times hard water) and oil [Nisseki Agrochemical Oil (Nippon Petrochemical Co., Ltd.)] ], The suspension stability was observed. <Suspension stability test against water (3 degree hard water)> Put 100 ml of 3 degree hard water into a 100 ml settling tube and put about 100
mg (1000 times) is added and all the samples are settled, and then a rubber stopper is attached and the tube is inverted 30 times / minute and allowed to stand. 30 after standing
Table 1 shows the results of observation of suspension stability (presence or absence of aggregation) after 3 minutes, 5 hours, and 24 hours.

[0016]

[Table 1]

<Suspension stability test on oil (Nisseki pesticide oil)> About 0.7 g of a sample was put in a 10 ml beaker, and about 0.5 ml of Nisseki pesticide oil was added thereto to make it uniform. Knead well. Nisseki pesticide oil 2 in a 20 ml settling tube with stopper
Add 0 ml, add the sample previously kneaded with Nisseki pesticide oil to it, attach a stopper, and invert 30 times / min. Table 2 shows the results of observation of suspension stability (presence or absence of aggregation) after 30 minutes, 3 hours, 5 hours, and 24 hours after standing.

[0018]

[Table 2]

The pesticide composition produced according to the present invention not only easily suspends in water and has good suspending property, but also easily suspends in oil such as machine oil and has suspending property similar to that in water. Therefore, its utility value in the agricultural field is great.

Claims (1)

[Claims] 1. A pesticidal composition comprising a fatty acid ester of polyhydric alcohol.