KR100289552B1 - Pesticide preparation - Google Patents

Abstract

[Name of invention]

Pesticide

[summary]

[Purpose] Providing pesticide granules with excellent collapse stability and stability

[Configuration] Agrochemical granules containing an active pesticide active ingredient, a weighting agent, a polyacrylate and a dialkylsulfosuccinate.

[Effects] The pesticide granules of the present invention are excellent in disintegration proliferation and storage stability of active pesticides.

Description

[Name of invention]

Pesticide

Detailed description of the invention

The present invention relates to a pesticide granules excellent in disintegration. More specifically, the present invention relates to a pesticide granules which rapidly collapse and expand in water when spreading on rice fields. The formulation of the present invention is used in agriculture for the purpose of insecticide, sterilization, weeding and the like.

Conventionally, granulation is a formulation form commonly used in the agricultural field together with powders, emulsions, hydrating powders, etc. (issued by the Japan Plant Protection Association, 1992 Pesticide Handbook). Polyacrylates used in the present invention are commercially available as disintegration aids for agrochemical solid preparations. Dialkyl sulfosuccinates are also known as surfactants for reducing surface tension (published by Industrial Co., Ltd., Handbook of Surfactants, September 10, 36). However, pesticide granules containing polyacrylate and dialkylsulfosuccinate together and having excellent disintegration are not known.

The present invention provides pesticide granulation mainly used for rice cultivation in rice fields.

When the granules are dispersed in rice fields, the granules disintegrate and expand in water, and the main medicine is released and diffused. Therefore, the disintegration and expansion of granules are important factors for good drug efficacy.

The present invention (1) spreads the rice paddy rapidly, swells and easily collapses, thereby efficiently expanding the pesticide active ingredient, and (2) good granularity and (3) stability of the pesticide active ingredient. (4) To provide pesticide granules that are excellent and have low manufacturing costs.

In order to solve the above problems, the present inventors have studied a number of auxiliaries, additives, surfactants, solvents and combinations thereof used in agrohorticulture, medicine and food, and as a result, polyacrylates and dialkylsulfosuccinates. It was found that the pesticide granules prepared by adding the solution solve the problems of the present invention.

The present invention is characterized by containing (1) agrochemical active ingredients (except that the agrochemical active ingredients consist of imazosulfuron, mefenacet and dimeron), weighting agents, polyacrylates and dialkylsulfosuccinates. Pesticide preparations, and (2) pesticide active ingredients (except that the pesticide active ingredient consists of imazosulfuron, mefenacet and dimeron), polyacrylates, dialkylsulfosuccinates, weight agents, and as desired It relates to a method for producing a pesticide granules according to the above (1), wherein the surfactant and the binder are mixed and granulated.

As the pesticide granulation according to the above (1), the content of the polyacrylate is about 0.1 to 10% (weight ratio) and the dialkyl sulfosuccinate content is about 0.1-5% (weight ratio) with respect to the whole pesticide granulation. Pesticide granulation according to the above (1), wherein the pesticide granulation according to the above (1) and (4) the active ingredient of the pesticide is at least one herbicidally active ingredient selected from imazosulfuron, pretilacrol, dimeron and esprocarb ( However, except that the pesticide active ingredient consists of imazosulfuron, mefenacet and dimeron).

Pesticide active ingredients are not limited. Except that the pesticide active ingredient consists of imazosulfuron, mefenacet, and dimeron. For example, the active ingredient of a pesticide may be mentioned in the latest pesticide data book 1989 edition of Soft Science Corporation (Japan) and the pesticide handbook 1992 edition of Japan Plant Protection Association (Japan).

As described above, any pesticide active ingredient used in the present invention can be used as long as it is generally used as a pesticide. For example, herbicides, insecticides, fungicides and the like are used.

As a specific example of herbicide, following (i)-(xiv) etc. are used, for example.

(i) phenoxy clock herbicides ‥‥ 2, 4-D, MCPA, MCPCA, MCPB, chlomeprop, naproanilide, DEH-112 (N-butyl- (R) -2 -[4- (2-fluoro-4-cyanophenoxy) phenoxy] propionate), etc.

(ii) diphenyl ether herbicides, such as chlornitrofen, chloromethoxynil, bifenox, etc .;

(iii) carbamate herbicides, e.g. swep, thiobencarb, esprocarb, molinate, dimepiperate, pyributicar Pyributycarb, etc.

(iv) acidamide herbicides, e.g., propanil, butachlor, pretilachlor, bromobutide, mefenacet, HW-52 Etobenzamido) (2 ', 3'- dichloro-4-ethoxymethoxybenzanilide), etc.,

(v) urea herbicides, e.g., dymron, etc.

(vi) sulfonyl urea herbicides, e.g., bensulfuron-methyl, imazosulfuron (N- (2-chloroimidazo [1,2-a] pyridin-3-ylsulfonyl) -N '-(4, 6-dimethoxy-2-pyrimidinyl) urea), pyrazosulfuron-ethyl, cynosulfuron, etc.,

(vii) triazine herbicides; for example, simethrin, promethrin, dimethametry n, etc .;

(xiii) diazine herbicides; for example, bentazone, etc.

(ix) diazole herbicides; for example, oxadiazon, pyrazolate, pyrazoxyfen, benzofenap, and the like.

(x) dinitroaniline herbicides; for example, trifluralin and the like,

(xi) fatty acid herbicides, for example, dalapon, etc.

(xii) organophosphorus herbicides; for example, piperophos, etc.

(xiii) nitrile herbicides, such as chlorthiamid,

(xiv) other herbicides; for example, dithiopyr and the like.

Examples of insecticides and fungicides include (i) to (xiii).

(i) organophosphorus insecticides, e.g. ), Pyridaphenthion, chlorpyrifos-methyl, vamidothion, malathon, phenthoate, dimethoate, disulfotone ( disulfoton, monocrotophos, tetrachlorvinphos, chlorofenvinphos, propaphos, acephate, salityion, trichlorphon , EPN, etc.

(ii) Carbamate insecticides. For example, carbaryl, metolcarb, isoprocarb, BPMC, propoxur, xylylcarb ), XMC, carbosulfan, benfuracarb, methomyl, thiodicarb, etc.

(iii) synthetic pyredoid insecticides. For example, cycloprothrin, ethofenprox, etc.,

(iv) Other pesticides ... for example, cartap, thiocyclam, bensultap, buprofezin, carbofuran, furathiocarbo ( furathiocarb, cyanofenphos and the like,

(v) polyhaloalkylthio-based fungicides ... for example, captan, etc.

(vi) Organochlorine disinfectants .. For example, TPN, phthalide, monguard, etc.

(vii) organophosphorus fungicides, e.g., edifenphos, IBP (iprobenfos), etc.

(viii) benzoimidazole-based fungicides; for example, thiophanate-methyl, benoyl, etc.

(ix) Carboxyamide disinfectants. For example, mepronil, flutolanil, tecloftalam, pencicuron and the like.

(x) acyl alanine fungicides ‥‥ For example, metalaxyl, etc.

(xi) N-heterocyclic ergosterol inhibitors .... For example, triflumizole, etc.,

(xii) antibiotic-based fungicides ... for example, kasugamycin, valididamycin A, etc.

(xiii) Other fungicides ... e.g. probenazole, isoprothiolane, tricyclazole, pyroquilon, oxolinic acid, ferimzon ), Iprodione and the like.

Among them, for example, imazosulfuron, pretilacrol, dimethamethrin, dimron, esprocarb, mefenacet, DEH-112, etobenzamide, morinate, dimepiperate, pyributi Herbicide active ingredients, such as carb and thiobencarb, are mentioned as a preferable thing, and also KPP-314 (code name, Gabung Pharmaceuticals (Japan)), CH-900 (code name, Jugai Pharmaceutical (Japan)), MX Herbicide active ingredients, such as -70906 (code name, Mitsubishi Chemical Co., Ltd.), are mentioned as a preferable thing.

The pesticide components described above may be used alone or in combination of two or more thereof.

The use amount of the pesticide active ingredient is generally about 0.1 to 50% (by weight), and more preferably about 0.3 to 35% (by weight) with respect to the whole pesticide preparation of the present invention.

The weight agent is generally used in agrochemical solid preparations, but preferable examples thereof include clay, talc, acidic clay, diatomaceous earth, calcium carbonate, zeolite and the like. These may be used independently and may be used together. The usage-amount of a weighting agent is about 45 to 95% (weight) normally, More preferably, it is about 55 to 75% (weight).

Specific examples of the polyacrylate used in the present invention include sodium polyacrylate salt, potassium polyacrylate salt, and the like, and the amount thereof is usually about 0.1 to 10% (weight) based on the whole pesticide preparation. More preferably, it is about 0.5-5% (weight) grade.

The alkyl group of the dialkylsulfosuccinate salt used in the present invention is preferably about 5 to 20 carbon atoms, and specific examples thereof include sodium dioctylsulfosuccinate, potassium dinonylsulfosuccinate, and the like. It is about 5% (weight), More preferably, it is about 0.2 to 2% (weight).

If desired, further other additives may be used, such as binders, surfactants and the like.

The binder may be a binder commonly used in the pesticide field, but bentonite and dextrin are particularly preferable. These may be used independently and may be used together. The amount of the binder used is usually about 1 to 50% by weight, more preferably about 2 to 30% by weight.

The surfactant may be any of nonionic, anionic, cationic and zwitterionic, but usually nonionic and / or anionic. Suitable nonionic surfactants include, for example, ethylene oxide adducts which are higher alcohols such as lauryl alcohol, stearyl alcohol and oleyl alcohol; Ethylene oxide adducts of alkylphenols such as isooctylphenol and nonylphenol; Ethylene oxide addition products of alkyl naphthols, such as butyl naphthol and octyl naphthol; Ethylene oxide adducts of higher fatty acids such as palmitic acid, stearic acid and oleic acid; Ethylene oxide adducts of mono or dialkyl phosphoric acid such as stearic acid and dilauryl phosphoric acid; Polymerized addition of ethylene oxide to amines of dodecylamine and stearic acid amide; Higher fatty acid esters of polyhydric alcohols such as sorbitan and ethylene oxide adducts thereof; The polymerization adduct of ethylene oxide and a propylene oxide, etc. are mentioned. Examples of suitable anionic surfactants include alkyl sulfate ester salts such as sodium lauryl sulfate and oleyl alcohol sulfate esteramine salts; Alkyl sulfonates such as sulfosuccinic acid, sodium dioctyl ester and sodium 2-ethylhexene sulfonate; And aryl sulfonates such as sodium isopropyl naphthalene sulfonate, sodium methylenebisnaphthalene sulfonate, sodium lignin sulfonate and sodium dodecylbenzene sulfonate.

Although the usage-amount of surfactant cannot be said uniformly, it is 0.1-10% (weight) normally with respect to the whole formulation of this invention, Preferably it is about 0.5 to 5% (weight).

The pesticide granules of the present invention are easily produced by a method known per se. For example, it is carried out by mixing and assembling agrochemical active ingredients, polyacrylates, dialkylsulfosuccinates, weighting agents, further surfactants, and binders as desired. It is usually prepared by mixing the components with water, extruding and drying.

As a preferable example of the method of using the pesticide granulation of the present invention, it is carried out using a farming machine such as a hand spreader or a power spreader with a granulator or a single pipe branch. Although the amount varies depending on the main drug content, 1-3 kg per 10 ar is preferable as a granule.

The pesticide granules of the present invention are excellent in collapse propagation in aquatic disease and excellent in storage stability of active pesticide ingredients.

Although an Example and a test example are given to the following, this invention is demonstrated in more detail, but this invention is not limited to these.

Example 1

To small kneader 671.94 g of calcium carbonate, imazosulfuron original (purity 98%) 3.06 g, tokisanone GR31A (approximately 40% aqueous solution of polyacrylate, Sangyoseisei (Japan)), samoline OT-70 (sodium About 5% of dioctylsulfosuccinate solution and 5 g of bentonite) were sequentially added and mixed for 20 minutes, and then 150 ml of tap water was added to knead for 10 minutes. The dough was granulated in an extrusion granulator (0.8 mm in diameter), dried in a fluid bed dryer, and passed through a sieve to obtain about 800 g of granules of 0.3 to 1.7 mm (sieve mesh).

Example 2

In the same manner as in Example 1, two kinds of granules were obtained using the following starting materials.

[Test Example]

(1) storage stability

The granules obtained in the above examples were stored at 40 ° C. for 1 month, 2 months and 3 months, and at room temperature for 1 year and 6 months to measure the residual ratio of the pesticide active ingredient contained in the granules.

(A) Granulation of Example 2 (1)

TABLE 1

(B) Formulation of Example 2 (2)

TABLE 2

(2) collapse probability test

50 cc of 3 degree hard water is added to a 9 cm diameter test dish, and 3 granules are dropped, and the time when the granules of the granules disappear without a trace is measured. The area of expansion after 30 minutes is measured.

TABLE 3

From the above test results, it can be seen that the granules of the present invention are excellent in disintegration proliferation even in water of high hardness and excellent in storage stability of the agrochemical active ingredient.

Claims (4)

Pesticide granules, characterized in that they contain agrochemical active ingredients, weight agents, polyacrylates and dialkylsulfosuccinates, except that the agrochemical active ingredient consists of imazosulfuron, mefenacet and dimeron. The pesticide preparation according to claim 1, wherein the content of polyacrylate is about 0.1-10% (weight ratio) and the dialkylsulfosuccinate content is about 0,1-5% (weight ratio) based on the total pesticide granulation. The pesticide granulation according to claim 1, wherein the pesticide active ingredient is at least one herbicidally active ingredient selected from imazosulfuron, preticracro, dimeron and esprocarb. Pesticide active ingredient, polyacrylic acid salt, dialkylsulfosuccinate salt, weighting agent, surfactant and binder are further mixed and granulated as desired to produce the pesticide granules according to claim 1 Except for consisting of imazosulfuron, mefenacet and dimeron).