JPH0717481B2 - Stabilized pesticide composition - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a novel stabilized agrochemical composition, a process for its preparation and its use.

In general, hydrolyzable pesticides require improvement for stabilization due to decomposition of the active ingredient during storage of the preparation depending on the type of preparation or other conditions. For example, JP-B-40-5440 discloses that a mixture of an organic mercury compound and a trivalent organic arsenic compound and calcium sulfate dihydrate (dihydrate gypsum) as a carrier are used to add 0.1 to 3% of castor oil hydrogen. Stabilized bactericidal compositions obtained by adding substances or higher fatty acids are described. However, the stability of the hydrolyzed pesticide according to the present invention cannot be satisfied by the above known method.

The present invention provides a stabilized agricultural chemical composition characterized by the addition of type III anhydrous gypsum in an agricultural chemical preparation containing a hydrolyzable agricultural chemical as an active ingredient. However, the active ingredient is 1
-(4-chlorobenzyl) -1-cyclopentyl-3-
Except when it represents phenylurea. Also provided is a stabilized agricultural chemical composition characterized by further adding epoxidized linseed oil and / or epoxidized soybean oil together with the above-mentioned type III anhydrous gypsum.

Further, the present invention provides a method for producing an agricultural chemical composition stabilized by adding type III anhydrous gypsum to a hydrolyzable agricultural chemical. Also provided is a method for producing an agricultural chemical composition stabilized by adding epoxidized linseed oil and / or epoxidized soybean oil together with the above-mentioned type III anhydrous gypsum.

Finally, it has been found that the stabilized pesticide composition according to the invention can be used for various purposes in the fields of agriculture, horticulture and epidemics.

Surprisingly, the present inventors have found that the pesticide composition according to the present invention prepared by adding the type III anhydrous gypsum stabilizes the hydrolyzable pesticide active ingredient and does not have any adverse effect on physical properties. The inventors have found out and completed the present invention.

Furthermore, by adding epoxidized linseed oil and / or epoxidized soybean oil together with the type III anhydrous gypsum,
The present invention has been completed by finding that the hydrolyzable pesticide active ingredient is further stabilized.

Also, gypsum, such as dihydrate gypsum (CaSO ₄ · 2H ₂ O), hemihydrate gypsum Type I and type II anhydrous gypsum show significant decomposition of the active ingredients of agricultural chemicals,
By selecting and using type III anhydrous gypsum, the excellent stabilizing effect as described above could be achieved.

Therefore, the stabilized pesticide composition according to the present invention provides an excellent technology in the field of pesticide production, and also provides an extremely outstanding technological progress in industrial utility. is there.

The hydrolyzable pesticide used in the stabilized agrochemical composition according to the present invention means a hydrolyzable active compound which can be usually used in the fields of plant protection and domestic protection. These are preferably insecticides, fungicides, acaricides,
It is a nematicide, a herbicide, and a plant growth regulator. Examples of active compounds of this type are: However, it is not limited to these.

O, O-dimethyl O-4-nitro-m-tolyl phosphorothioate (fenitrothion fenitrothion), O, O-
Diethyl O-2-isopropyl-6-methylpyridin-4-yl phosphorothioate (diazinone diazio
n), O, O-diethyl O-5 phenylisoxazole-
3-yl phosphorothioate (isoxathion isox
athion), O, O-diethyl-O- (3-oxo-2-phenyl-2H-pyridazin-6-yl) phosphorothioate (pyridafenethione pyridaphention), S-1,2
-Bis (ethoxycarbonyl) ethyl O, O-dimethyl phosphorodithioate (marathion malathion), S
-Α-ethoxycarbonylbenzyl O, O-dimethyl phosphorodithioate (phenentate), O,
O-dimethyl S- [2- (methylamino) -2-oxotyl] phorforithioate (dimethoate dime
thoate), S-2,3-dihydro-5-methoxy-2-oxo-1,3,4-thiadiazol-3-ylmethyl O, O-
Dimethyl phosphorodithioate (methidathion meth
idathion), O-ethyl O-4-nitrophenyl phenylphosphonothioate (EPN) and other organophosphorus insecticides;
O-Ethyl S, S-diphenyl phosphorodithioate (edifenphos edifenphos), S-benzyl diisolopyr phosphorothiolate (IBP) and other organophosphorus insecticides; 2-isopropoxyphenyl methyl carbamate (propoxur propoxur) , 2-sec-butylphenyl methylcarbamate (BPMC), 3,4-xylyl methylcarbamate (xylylcarb xylylcarb), 2-
Carbamate insecticides such as ethylthiomethylphenyl methyl carbamate (ethiofecarb), zinc ethylene bis dithiocarbamate (Zineb zi
neb), Manganese ethylenebisdithiocarbamate (manneb), zinc propylenebisdithiocarbamate (propineb propineb), and other dithiocarbamate fungicides; acaricide such as ethyl p, p'-dichlorobenzilate (chlorbenzilate chlerobenzilate) Agent, S, S'-2-Dimethylaminotrimethylene bis (thiocarbamate) (cartap cartap), N, N '
Insecticide such as -dimethyl-1,2,3-trithian-5-ylamine (thiocyclam); N-dichlorofluoromethylthio-N'N'-dimethyl-N-phenylsulfamide (diclofluanid dichlofiuanid), 1,
2,3,6-Tetrahydro-N- (trichloroethylthio)
Phthalimide (captan), dimethyl 4,
4 '-(o-phenylene) bis (3-thioarophanate) (thiophanate-methyl thiophanate-methy
l), methyl 1- (butylcarbamoyl) benzimidazol-2-yl carbamate (benomyl benomy
l) etc. disinfectants.

The anhydrous gypsum used in the stabilized agrochemical composition according to the present invention is type III anhydrous gypsum.

The type III anhydrous gypsum used in the present invention stabilizes the hydrolyzable pesticide active ingredient of the present invention, and exerts its effect even when formulated, without affecting the physical properties. Therefore,
Type III anhydrous gypsum is added to the hydrolyzable pesticide active ingredient, and if necessary, epoxidized linseed oil and / or epoxidized soybean oil is added, and a solid diluent is prepared by a method generally performed in the field of pesticide production. Alternatively, it can be produced in various production forms by using a carrier, and optionally a surfactant.

Examples of solid diluents include plant powders: mineral powders: clay minerals (clay) [eg, kaolinite group, montmorillonite group, attapulgite group, etc.], talc, talc, pyrophyllite, mica , Calcite, vermiculite, dolomite, phosphate, diatomaceous earth,
Synthetic inorganic material [eg, highly dispersed silicic acid, synthetic alumina, etc.]: synthetic resin [eg, phenol resin, urea resin,
Vinyl chloride, etc.] and the like.

Examples of the surfactant include anionic (anionic) surfactants: alkyl sulfates [eg sodium lauryl sulfate], aryl sulfonic acids [eg alkylaryl sulfonate, alkylnaphthalene sulfonate sodium etc.] Nickacid salts (for example, Na salt of a copolymer of maleic acid and olefin), nonionic (nonionic) surfactants: polyoxyethylene glycol ethers (for example, polyoxyethylene alkylaryl ether), polyoxyethylene Examples thereof include glycol esters (for example, polyoxyethylene fatty acid ester and the like), polyhydric alcohol esters (for example, polyoxyethylene sorbitan monolaurate and the like) and the like.

Adhesives can also be used in the formulation, such as carboxymethyl cellulose, and natural and synthetic polymers such as gum arabic, polyvinyl alcohol and polyvinyl acetate.

It is also possible to use colorants, which include inorganic pigments (e.g. iron oxide, titanium oxide and psilan blue) and organic dyes such as alizarin dyes, azo dyes or metal phthalocyanine dyes, and Mention may be made of trace elements such as salts of iron, manganese, boron, copper, cobalt, molybdenum, zinc.

As described above, the stabilized pesticide composition according to the present invention can be made into an ordinary powder, wettable powder, or the like.

The formulation generally comprises from 0.1 to 90% by weight of the active ingredient,
Preferably 0.5 to 80% by weight can be contained.

The amount of type III anhydrous gypsum used in the stabilized agrochemical composition according to the present invention is usually 4 to 95% by weight, preferably 6 to 50% by weight in the formulation. More specifically, the type III anhydrous gypsum is added in an amount of 4 to 50% by weight, preferably 6 to 30% by weight, and a wettable powder is added in an amount of 10 to 95% by weight, preferably 10 to 50% by weight. The amount of epoxidized linseed oil and epoxidized soybean oil added is 0.1 to 30.
% By weight, preferably 0.5-10% by weight.

The agrochemically active compound of the present invention, in the above-mentioned preparation, other known active compounds, for example, fungicides (fangicides, bactericides), insecticides, acaricides, herbicides, bird repellents, growth regulators, fertilizers and / or Alternatively, a soil conditioner can be made to coexist. Here, examples of the insecticide include organic phosphorus agents, carbamate agents, carboxylate agents, chlorinated hydrocarbon agents, and insecticidal substances produced by microorganisms.

Next, the contents of the present invention will be specifically described with reference to Examples.
The present invention should not be limited to this.

Example 1 (Powder) Fentate 2,0 parts by weight Type III anhydrous gypsum 1.0 parts by weight PAP 0.2 parts by weight Clay 87.8 parts by weight is pulverized and mixed to obtain a powder.

Example 2 (powder) 2.0 parts by weight of fuenteate 10.0 parts by weight of type III anhydrous gypsum 0.5 parts by weight of epoxidized linseed oil 0.2 parts by weight of PAP 87.3 parts by weight of clay are pulverized and mixed to obtain a powder.

Example 3 (Powder) Edifenphos 1.5 parts by weight Type III anhydrous gypsum 15.0 parts by weight PAP 0.2 parts by weight Clay 82.3 parts by weight is pulverized and mixed to obtain a powder.

Example 4 (Dust) Edifenphos 1.5 parts by weight Type III anhydrous gypsum 15.0 parts by weight Epoxidized soybean oil 1.0 part by weight PAP 0.2 parts by weight Clay 82.3 parts by weight is pulverized and mixed to obtain a powder.

Example 5 (powder) Ethiofencarb 2.0 parts by weight Type III anhydrous gypsum 20.0 parts by weight PAP 0.2 parts by weight Clay 77.8 parts by weight is pulverized and mixed to obtain a powder.

Example 6 (wettable powder) Edifenphos 20.0 parts by weight Fthalide 20.0 parts by weight Type III anhydrous gypsum 26.0 parts by weight Epoxidized soybean oil 4.0 parts by weight La salt of lauryl sulfate 3.0 parts by weight Na salt of lignin sulfonic acid 5.0 parts by weight White carbon 22.0 parts by weight are pulverized and mixed to obtain a wettable powder.

Example 7 (Wettable powder) Propineb 70.0 parts by weight Type III anhydrous gypsum 17.0 parts by weight Na salt of ligninsulfonic acid 5.0 parts by weight White carbon 8.0 parts by weight is pulverized and mixed to obtain a wettable powder.

Test Example 1 Stabilization test of active ingredient 2.0 parts by weight of fuentate Type III anhydrous gypsum 10.0 parts by weight Epoxidized linseed oil 0 or 0.5 parts by weight PAP 0.2 parts by weight The above-mentioned amount of active ingredients and auxiliary agents are mixed and desired amount of type III Anhydrous gypsum and epoxidized linseed oil were added, and the total amount was 100
The remaining amount of clay is added so as to be a weight part, and pulverized and mixed to prepare a dust. The substance was put in a glass bottle and stored in the dark at 40 ° C for 30 days, and the decomposition rate was investigated. The results are shown in Table 1.

Test Example 2 Stabilization test of active ingredient Edifenphos 1.5 parts by weight Type III anhydrous gypsum 15.0 parts by weight Epoxidized soybean oil 0 or 1.0 parts by weight PAP 0.2 parts by weight The above-mentioned amount of active ingredients and auxiliary agents are mixed to obtain a desired amount of type III Anhydrous gypsum and epoxidized soybean oil are added, and the remaining amount of clay is added so that the total amount is 100 parts by weight, and the mixture is pulverized and mixed to prepare a dusting agent. The substance was put in a glass bottle and stored in a dark place at 40 ° C for 30 days and 60 days, and its decomposition rate was investigated. The results are shown in Table 2.

Test Example 3 Stabilization test of active ingredient Ethiofencarb 2.0 parts by weight Type III anhydrous gypsum 20.0 parts by weight PAP 0.2 parts by weight Clay 77.8 parts by weight The above-mentioned amounts of active ingredient, type III anhydrous gypsum and auxiliary agents are pulverized and mixed to form a powder. Prepare. Put it in a glass bottle 40
It was stored in a dark place at ℃ for 30 days and its decomposition rate was investigated. The results are shown in Table 3.

Test Example 4 Stabilization test of active ingredient Edifenphos 20.0 parts by weight Fusalide 20.0 parts by weight Type III anhydrous gypsum 30.0 parts by weight Na salt of lauryl sulphate 3.0 parts by weight Na salt of ligninsulfonic acid 5.0 parts by weight White carbon 22.0 parts by weight A wettable powder is prepared by pulverizing and mixing the active ingredient, type III anhydrous gypsum and an auxiliary agent. Put it in a glass bottle
It was stored in the dark at 40 ° C for 60 days, and its decomposition rate was investigated. The results are shown in Table 4.

Test Example 5 Stabilization test of active ingredient Propineb 70.0 parts by weight Type III anhydrous gypsum 17.0 parts by weight Na salt of ligninsulfonic acid 5.0 parts by weight White carbon 8.0 parts by weight The above-mentioned amounts of active ingredient, type III anhydrous gypsum and auxiliary agents are pulverized and mixed. To prepare a wettable powder. Put it in a glass bottle
It was stored in the dark at 40 ° C for 30 days, and its decomposition rate was investigated. The results are shown in Table 5.

Claims (2)

[Claims] 1. A stabilized agrochemical composition, characterized in that a type III anhydrous gypsum is added to an agrochemical formulation containing a hydrolyzable agrochemical as an active ingredient. However, the active ingredient is 1- (4-
(Chlorobenzyl) -1-cyclopentyl-3-phenylurea is excluded. 2. A stabilized pesticide composition, characterized in that, in a pesticide formulation containing a hydrolyzable pesticide as an active ingredient, type III anhydrous gypsum and epoxidized linseed oil and / or epoxidized soybean oil are added. object. However, the active ingredient is 1- (4-
(Chlorobenzyl) -1-cyclopentyl-3-phenylurea is excluded.