JP2009114102A - Water surface-floating agrochemical granular composition, and pouched agrochemical formulation for paddy field treatment comprising the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a water surface-floating agrochemical granule having excellent floating and diffusing properties on the water surface. <P>SOLUTION: The water surface-floating agrochemical granular composition includes an agrochemically active ingredient, an alkanediol derivative represented by formula (I) (wherein, X<SP>1</SP>represents a 6-14C divalent saturated hydrocarbon group; A<SP>1</SP>and A<SP>2</SP>represent each a 2-4C alkylene group; m and n represent each an integer, with the proviso that the sum total of m and n is any of integer of 1-7; when m is an integer of &ge;2, A<SP>1</SP>s are each same or mutually different; and when n is an integer of &ge;2, A<SP>2</SP>s are each same or mutually different), a condensed phosphoric acid or a salt thereof, a floating adjuvant, and an extender. The contents thereof are preferably 0.1-80 wt.% of the agrochemically active ingredient, 0.1-10 wt.% of the alkanediol derivative, 0.1-10 wt.% of the condensed phosphoric acid or the salt thereof, and 10-95 wt.% of the sum total of the floating adjuvant and the extender. <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

Description

  The present invention relates to a water-floating pesticide granular composition and a pouched pesticide preparation for paddy field treatment containing the same.

  As a pesticide granule, a method using a water surface-floating pesticide granule containing a floating aid and having a specific gravity of less than 1 is applied to paddy fields and the like to spread and spread the pesticide active ingredient throughout the water surface. Established as a technology

  The water-floating pesticide granule may be used as it is by spraying it onto a paddy field as it is, but it may also be used in such a manner that it is encapsulated in a water-soluble film and put into a paddy field as a pouched pesticide preparation. A pesticide formulation (jumbo agent) is a pesticide active ingredient that dissolves the water-soluble film immediately after being put into the paddy field, and the encapsulated water-floating pesticide granule floats on the water surface and diffuses throughout the paddy field. Will spread.

  JP-A-2007-39344 discloses an alkanediol having 6 to 14 carbon atoms and an alkanediol derivative obtained by adding an alkylene oxide having 2 to 4 carbon atoms to an alkanediol having 6 to 14 carbon atoms. A surface-floating pesticide composition containing a spreader comprising the above components, an agrochemical medicinal component, a floating aid and a bulking agent is disclosed. JP-A-2006-257082 describes a production example of an agrochemical granule containing a specific agrochemical active ingredient, a plastic hollow body, an acetylene glycol surfactant, and the like (Formulation Example 3). However, these water-floating pesticide granules have excellent floating properties on the water surface but are not sufficiently diffusible.

JP 2007-39344 A JP 2006-257082 A

  Accordingly, an object of the present invention is to provide a water surface floating agricultural chemical granular composition excellent in water surface floating property and diffusibility. Another object of the present invention is to provide a bag-shaped pesticide preparation for paddy field treatment in which a water surface-floating pesticide granule excellent in water surface floatability and diffusibility is encapsulated in a water-soluble film.

  As a result of intensive studies to achieve the above object, the present inventors have found that a surface-floating pesticide is composed of an agrochemical active ingredient, an alkanediol derivative having a specific structure, condensed phosphoric acid or a salt thereof, a floating aid and a bulking agent. It was found that when the granular composition was constituted, it was excellent in both floating and diffusibility on the water surface, and the present invention was completed.

（式中、Ｘ¹は炭素数６〜１４の２価の飽和炭化水素基を示し、Ａ¹及びＡ²は、各々炭素数２〜４のアルキレン基を示し、ｍ及びｎは各々が整数を示す。但し、ｍとｎとの合計は１〜７の整数の何れかであり、ｍが２以上の整数である場合、各々のＡ¹は同一又は相異なり、ｎが２以上の整数である場合、各々のＡ²は同一又は相異なる）
で表されるアルカンジオール誘導体と、縮合リン酸又はその塩と、浮遊助剤及び増量剤とを含有する水面浮遊性農薬粒状組成物。
２．農薬活性成分が０．１〜８０重量％、式（Ｉ）で表されるアルカンジオール誘導体が０．１〜１０重量％、縮合リン酸又はその塩が０．１〜１０重量％、浮遊助剤及び増量剤が合計で１０〜９５重量％の含有量である上記１．記載の水面浮遊性農薬粒状組成物。
３．アルカンジオール誘導体１重量部に対して、縮合リン酸又はその塩が０．１〜１０重量部の含有割合である上記１．又は２．記載の水面浮遊性農薬粒状組成物。
４．さらに、ポリカルボン酸系界面活性剤を含有する上記１．〜３．の何れかに記載の水面浮遊性農薬粒状組成物。
５．ポリカルボン酸系界面活性剤の含有量が０．１〜１０重量％である上記４．記載の水面浮遊性農薬粒状組成物。
６．浮遊助剤が、プラスチック微小中空体である上記１．〜５．の何れかに記載の水面浮遊性農薬粒状組成物。
７．農薬活性成分の２０℃における水溶解度が、０．００００１〜１０ｍｇ／ｍｌである上記１．〜６．の何れかに記載の水面浮遊性農薬粒状組成物。
８．Ｘ¹が炭素数９又は１０の２価の飽和炭化水素基である上記１．〜７．の何れかに記載の水面浮遊性農薬粒状組成物。
９．農薬活性成分が、除草活性成分である上記１．〜８．の何れかに記載の水面浮遊性農薬粒状組成物。
１０．上記１．〜９．の何れかに記載の水面浮遊性農薬粒状組成物が、水溶性フィルムに内包されている水田処理用袋状農薬製剤。 That is, the present invention provides the following 1. -10. To provide things.
1. Agrochemical active ingredients and the following formula (I)

(In the formula, X ¹ represents a divalent saturated hydrocarbon group having 6 to 14 carbon atoms, A ¹ and A ² each represents an alkylene group having 2 to 4 carbon atoms, and m and n each represents an integer. However, the sum of m and n is any integer of 1 to 7, and when m is an integer of 2 or more, each A ¹ is the same or different, and n is an integer of 2 or more. Each A ² is the same or different)
A water-floating pesticide granular composition comprising an alkanediol derivative represented by the formula: condensed phosphoric acid or a salt thereof, a floating aid and a bulking agent.
2. Agrochemical active ingredient is 0.1 to 80% by weight, alkanediol derivative represented by formula (I) is 0.1 to 10% by weight, condensed phosphoric acid or salt thereof is 0.1 to 10% by weight, floating aid And 1. The filler is a total content of 10 to 95% by weight. The water-floating pesticide granular composition as described.
3. The above 1. in which condensed phosphoric acid or a salt thereof is contained in an amount of 0.1 to 10 parts by weight with respect to 1 part by weight of the alkanediol derivative. Or 2. The water-floating pesticide granular composition as described.
4). Furthermore, the above-mentioned 1. containing a polycarboxylic acid surfactant. ~ 3. The water-floating pesticide granular composition according to any one of the above.
5. The above 4. wherein the content of the polycarboxylic acid surfactant is 0.1 to 10% by weight. The water-floating pesticide granular composition as described.
6). 1. The floating aid is a plastic micro hollow body. ~ 5. The water-floating pesticide granular composition according to any one of the above.
7. 1. The water solubility at 20 ° C. of the agricultural chemical active ingredient is 0.00001 to 10 mg / ml. ~ 6. The water-floating pesticide granular composition according to any one of the above.
8). 1. X ¹ is a divalent saturated hydrocarbon group having 9 or 10 carbon atoms. ~ 7. The water-floating pesticide granular composition according to any one of the above.
9. The above 1. wherein the agrochemical active ingredient is a herbicidal active ingredient. ~ 8. The water-floating pesticide granular composition according to any one of the above.
10. Above 1. ~ 9. A pouch-shaped pesticide preparation for paddy field treatment in which the water-floating pesticide granular composition according to any of the above is encapsulated in a water-soluble film.

  In the water-floating pesticide granular composition of the present invention and the pouched pesticide preparation for paddy field treatment, since the alkanediol derivative having a specific structure and condensed phosphoric acid or a salt thereof are used in combination, not only the water surface floatability is excellent. Excellent diffusibility.

  The water-floating pesticide granular composition of the present invention comprises an agrochemical active ingredient, an alkanediol derivative represented by the formula (I), condensed phosphoric acid or a salt thereof, a floating aid and a bulking agent. Yes.

  In the present invention, the alkanediol derivative represented by the formula (I) acts as a spreading agent. In this invention, since condensed phosphoric acid or its salt is used with the alkanediol derivative represented by Formula (I), the diffusibility of an agrochemical formulation improves remarkably. In addition, when only one of both components is used, the diffusibility of the agricultural chemical preparation is insufficient.

  The agrochemical active ingredient is not particularly limited and includes compounds that are active ingredients such as various conventionally known herbicides, plant growth regulators, fungicides, insecticides, acaricides, nematicides and the like. Agrochemical active ingredients can be used alone or in combination of two or more.

  Examples of herbicides (herbicidal active ingredients) include (a) sulfonylurea herbicides, (b) carbamate herbicides, (c) chloroacetanilide herbicides, (d) triazine herbicides, (e) acids Examples include amide-based or urea-based herbicides, and (f) other types of herbicides. The herbicides can be used alone or in combination of two or more.

［式中、Ｑは、下記式（Ｑ１）、（Ｑ２）、（Ｑ３）又は（Ｑ４）

（式中、Ｒ¹は、水素原子、ハロゲン原子、シアノ基、ニトロ基、ハロゲン原子で置換されていてもよい低級アルキル基、ハロゲン原子で置換されていてもよい低級アルコキシ基、低級アルキルチオ基、低級アルキルスルフィニル基、低級アルキルスルホニル基、アミノ基、低級アルキルアミノ基又はジ低級アルキルアミノ基を示し、Ｒ²は、水素原子、ハロゲン原子又はハロゲン原子で置換されていてもよい低級アルキル基を示し、Ｒ³は、水素原子、ハロゲン原子、シアノ基、ニトロ基、ハロゲン原子で置換されていてもよい低級アルキル基、ハロゲン原子若しくは低級アルキル基で置換されていてもよい３〜６員のシクロアルキル基、ハロゲン原子で置換されていてもよい低級アルケニル基、ハロゲン原子で置換されていてもよい低級アルキニル基、ハロゲン原子で置換されていてもよい低級アルコキシ基、低級アルキルチオ基、低級アルキルスルフィニル基、低級アルキルスルホニル基、アミノ基、低級アルキルアミノ基又はジ低級アルキルアミノ基を示す）
で表される縮合複素環式基を示し、Ｙ及びＺは、同一又は異なって、ハロゲン原子で置換されていてもよい低級アルキル基、ハロゲン原子で置換されていてもよい低級アルコキシ基又はハロゲン原子を示す］
で表される化合物が挙げられる。 As a representative example of the sulfonylurea herbicide (a), the following formula (II)

[Wherein Q is the following formula (Q1), (Q2), (Q3) or (Q4)

(Wherein R ¹ is a hydrogen atom, a halogen atom, a cyano group, a nitro group, a lower alkyl group optionally substituted with a halogen atom, a lower alkoxy group optionally substituted with a halogen atom, a lower alkylthio group, A lower alkylsulfinyl group, a lower alkylsulfonyl group, an amino group, a lower alkylamino group or a di-lower alkylamino group; R ² represents a hydrogen atom, a halogen atom or a lower alkyl group which may be substituted with a halogen atom; , R ³ represents a hydrogen atom, a halogen atom, a cyano group, a nitro group, a lower alkyl group that may be substituted with a halogen atom, a 3- to 6-membered cycloalkyl that may be substituted with a halogen atom or a lower alkyl group A lower alkenyl group optionally substituted with a halogen atom, a lower alkenyl group optionally substituted with a halogen atom Kiniru group, a lower alkoxy group optionally substituted by a halogen atom, a lower alkylthio group, lower alkylsulfinyl group, lower alkylsulfonyl group, an amino group, a lower alkylamino group or a di-lower alkylamino group)
And Y and Z are the same or different and are a lower alkyl group optionally substituted with a halogen atom, a lower alkoxy group optionally substituted with a halogen atom, or a halogen atom Show]
The compound represented by these is mentioned.

  “Lower” in the lower alkyl group, lower alkenyl group, lower alkoxy group, lower alkylthio group and the like in the formula (II) means that the hydrocarbon moiety has 1 or 2 to 6 carbon atoms (preferably 1 or 2 to 2). 4 carbon atoms).

  Examples of the “halogen atom” include fluorine, chlorine, bromine and iodine atoms. The “lower alkyl (group)” includes a linear or branched alkyl group having 1 to 4 carbon atoms, such as methyl, ethyl, propyl, isopropyl, butyl, isobutyl, s-butyl, t-butyl group. Can be mentioned. Examples of the “lower alkoxy group” include linear or branched alkoxy groups having 1 to 4 carbon atoms such as methoxy, ethoxy, propoxy, isopropoxy, t-butoxy group and the like. Examples of the “lower alkenyl group” include ethenyl, 1-propenyl, 2-propenyl, 1,2-propadienyl, 1-butenyl, 2-butenyl, 3-butenyl, 1,3-butadienyl group and the like. Examples of the “lower alkynyl group” include ethynyl, 1-propynyl, 2-propynyl, 1-butynyl, 2-butynyl group and the like. Examples of the “3 to 6 membered cycloalkyl group” include cyclopropyl, cyclobutyl, cyclopentyl and cyclohexyl groups.

  As the condensed heterocyclic group represented by Q, an imidazo [1,2-b] pyridazine group represented by the formula (Q1), an imidazo [1,2-a] pyridine group represented by the formula (Q2), And a pyrazolo [1,5-a] pyrimidine group represented by the formula (Q3) and a pyrazo [1,5-b] thiazole group represented by the formula (Q4).

R ¹ is preferably a halogen atom or a lower alkyl group which may be substituted with a halogen atom, and more preferably a chlorine atom. R ² is preferably a hydrogen atom, a halogen atom, or a lower alkyl group which may be substituted with a halogen atom, and more preferably a hydrogen atom. R ³ is a hydrogen atom, a halogen atom, a lower alkyl group which may be substituted with a halogen atom, a 3-6 membered cycloalkyl group which may be substituted with a halogen atom or a lower alkyl group, or a halogen atom. A lower alkoxy group, a lower alkylthio group, a lower alkylsulfinyl group, a lower alkylsulfonyl group, a lower alkylamino group or a di-lower alkylamino group, which may be substituted, are preferably a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, Or a 3-6 membered cycloalkyl group is preferable. Y and Z are preferably a lower alkyl group which may be substituted with a halogen atom, or a lower alkoxy group which may be substituted with a halogen atom, and more preferably a methoxy group.

  Specific examples of the sulfonylurea herbicide (a) include bensulfuron methyl, pyrazosulfuron ethyl, azimusulfuron, sulfosulfuron, and imazosulfuron.

  Examples of the carbamate herbicide (b) include dialate, butyrate, trialate, fenmedifam, chloroprofam, ashram, phenicofam, beniocarb, molinate, esprocarb, pyribuchicarb, dimepilate, and swep.

  Examples of the chloroacetanilide herbicide (c) include propachlor, metazachlor, alachlor, acetochlor, metolachlor, butachlor, pretilachlor, tenyl chlor and the like.

  Examples of the triazine herbicide (d) include simazine, atrazine, propazine, cyanazine, amethrin, cimethrin, dimetamethrin, promethrin and the like.

  Examples of the acid amide or urea herbicide (e) include isoxaben, diflufenican, diuron, linuron, fluometuron, diphenoxuron, methyl dimuron, isoproturon, isouron, tebuthiuron, metabenzothiazuron, propanil, mefenacet, chromeprop, naproanilide , Bromobutide, diimron, cumylron, ettobenzanide and the like.

  Other herbicides (f) include, for example, bentazone, tridiphan, indanophan, amitrole, carfentrazone ethyl, sulfentrazone, fenchlorazole ethyl, fentrazamide, isoxaflutol, clomazone, malein Acid hydrazide, pyridate, chloridazone, norflurazon, pyrithiobac, bromacil, tarbacil, metribudine, oxadiclomephone, cinmethyline, flumicrolacpentyl, sinidoneethyl, flumioxazin, fluthiasetmethyl, azaphenidine, benfrate, oxadiazon, oxadialgyl, pentbutylazone Caffeantrol, pyriminobac-methyl, sodium bisbilivac, pyrimisulphan, pyribenzoxime Pyriftalid, indanofan, ACN, benzobicyclon, dithiopyr, dalapon, chlorthiamid, and the like penoxsulam.

  Examples of plant growth regulators (plant growth regulation active ingredients) include hymexazole, paclobutrazol, uniconazole-P, inabenfide, prohexadione calcium and the like.

  Examples of the bactericides (bactericidal active ingredients) include, for example, polyhaloalkylthio bactericides (captan, etc.), organophosphorus bactericides (IBP, EDDP, torquelophosmethyl, etc.), benzimidazole bactericides (benomyl, carbendazim, Thiophanate methyl, etc.), carboxamide fungicides (mepronil, flutolanil, tifluzamide, furametopyr, teclophthalam, pencyclon, carpropamide, diclocimet, etc.), acylalanine fungicides (metalaxyl, etc.), azole fungicides (triflumizole, ipconadir, pefazoate) , Progloraz, etc.), methoxyacrylic acid fungicides (azoxystrobin, metminostrobin, etc.), antibiotics fungicides (validamycin A, blasticidin S, kasugamycin, polio Shin, etc.), other fungicides (fthalide, probenazole, isoprothiolane, tri Jikura tetrazole, pyroquilon, ferimzone, acibenzolar S-methyl, Jikuromejin, oxolinic acid, phenazine oxide, TPN, etc. iprodione), and the like.

  Insecticides (insecticidal active ingredients) include, for example, organophosphorus insecticides (fenthion, fenitrothion, pyrimiphosmethyl, diazione, quinalphos, isoxathion, pyridafenthione, chlorpyrifosmethyl, bamidione, malathion, phentoate, dimethoate, disulfotone, monocrotophos, tetra Chlorvinphos, chlorfenvinphos, propofos, acephate, trichlorfone, EPN, pyracrofos, etc.), carbamate insecticides (carbaryl, metorcarb, isoprocarb, BPMC, propoxur, XMC, carbofuran, carbosulfan, benfuracarb, furthiocarb, mesomil, Thiodicarb, etc.), synthetic pyrethroid insecticides (cycloproton, etofenprox, etc.), neraistochi Insecticides (cartap, bensultap, thiocyclam, etc.), neonicotinoid insecticides (imidacloprid, nitenpyram, acetamiprid, thiamethoxam, thiacloprid, dinotefuran, clothianidin, etc.) and other insecticides (buprofezin, tebufenozide, fipronil, etiprol) Etc.

  Examples of the acaricide (acaricide active ingredient) include hexothiazox, pyridaben, fenpyroximate, tebufenpyrad, chlorfenapyr, etoxazole, pyrimidifen and the like.

  Examples of the nematicide (nematicidal active ingredient) include phosphatiates.

  The agrochemical active ingredient is particularly preferably a herbicidal active ingredient.

  As the agrochemical active ingredient, those having a water solubility of 20 mg / ml or less at 20 ° C. are usually used, those having a range of 0.00001 to 10 mg / ml are preferred, especially those having a range of 0.0001 to 1 mg / ml. Is preferred. The present invention is particularly useful for such pesticidal active ingredients with low water solubility.

  Such an pesticidal active ingredient is usually 0.1 to 80% by weight, preferably 0.1 to 50% by weight, more preferably about 0.2 to 20% by weight, based on the entire water-floating pesticide granular composition. It is.

In the alkanediol derivative represented by the formula (I), X ¹ represents a divalent saturated hydrocarbon group having 6 to 14 carbon atoms, and A ¹ and A ² each represents an alkylene group having 2 to 4 carbon atoms. M and n each represents an integer. However, the sum of m and n is an integer of 1 to 7, and when m is an integer of 2 or more, each A ¹ is the same or different, and when n is an integer of 2 or more, Each A ² is the same or different.

Examples of the divalent saturated hydrocarbon group having 6 to 14 carbon atoms in X ¹ include hexamethylene, heptamethylene, octamethylene, nonamethylene, decamethylene, undecamethylene, dodecamethylene, tridecamethylene, tetradecamethylene 6 carbon atoms. -14 linear alkylene groups; C6-C14 branched alkylene groups such as 2-butyl-2-ethyltrimethylene, 2,4-diethylpentamethylene and 2-methyloctamethylene groups.

X ¹ is particularly preferably a branched alkylene group having 6 to 14 carbon atoms. X ¹ is preferably a divalent saturated hydrocarbon group having 9 or 10 carbon atoms.

Examples of the alkylene group having 2 to 4 carbon atoms in A ¹ and A ² include linear or branched alkylene groups such as ethylene, propylene, trimethylene, and tetramethylene groups.

  The alkanediol derivative represented by the formula (I) has a function as a nonionic surfactant. The HLB (Hydrophile-Lipophile Balance) of the alkanediol derivative represented by the formula (I) is preferably in the range of 6 to 14, more preferably in the range of 8 to 12.

  The alkanediol derivative represented by the formula (I) can be produced by a known method. For example, an alkylene oxide having 2 to 4 carbon atoms such as ethylene oxide, propylene oxide, tetrahydrofuran, etc. in the presence of a base such as sodium hydroxide or potassium hydroxide in a divalent alcohol having 6 to 14 carbon atoms (alkanediol or the like). Can be synthesized by successive addition reactions.

  The amount of the alkanediol derivative represented by the formula (I) is usually 0.1 to 10% by weight, preferably 0.2 to 8% by weight, more preferably, based on the whole water-floating pesticide granular composition. It is about 0.5 to 7% by weight.

  In the present invention, condensed phosphoric acid or a salt thereof is used as an essential component. The condensed phosphoric acid or a salt thereof has a function as a dispersant. Examples of the condensed phosphoric acid in the “condensed phosphoric acid or salt thereof” include tripolyphosphoric acid, polyphosphoric acid, pyrophosphoric acid, and the like. Examples of the salt of condensed phosphoric acid include alkali metal salts such as sodium salt and potassium salt; alkaline earth metal salts such as calcium salt and magnesium salt; ammonium salt and the like. As the condensed phosphoric acid or a salt thereof, an alkali metal tripolyphosphate such as sodium tripolyphosphate is particularly preferable.

  The use amount (total amount) of condensed phosphoric acid or a salt thereof is usually 0.1 to 10% by weight, preferably 0.2 to 8% by weight, more preferably 0.8%, based on the whole water-floating pesticide granular composition. About 5 to 7% by weight. Moreover, the usage-amount (total amount) of condensed phosphoric acid or its salt is 0.1-10 weight part normally with respect to 1 weight part of alkanediol derivative represented by a formula (I), Preferably it is 0.2. It is -6 weight part, More preferably, it is the range of 0.4-3 weight part.

  In the present invention, as the floating aid (buoyancy imparting agent), various inorganic floating aids and organic floating aids having a specific gravity of less than 1 can be used. Examples of the inorganic floating aid include hollow glass, foamed shirasu, foamed pumice, and foamed perlite. Examples of the organic floating aid include foamed synthetic resins (including plastic micro hollow bodies), synthetic resin powders such as polyethylene powder and polypropylene powder, paraffin wax, waxy substances derived from animals and plants, cork, and wood powder. Can be mentioned. Among these, a plastic micro hollow body, foamed shirasu, and hollow glass are preferable, and a plastic micro hollow body is particularly preferable. Examples of the material for the shell of the plastic micro hollow body include vinylidene chloride-acrylonitrile resin, acrylonitrile resin, and acrylic resin. A floating auxiliary agent can be used individually or in combination of 2 or more types.

  Examples of the bulking agent include organic acids (citric acid, succinic acid, maleic acid and the like) or salts thereof, water-soluble carriers such as urea and saccharides [lactose (lactose), glucose, sucrose, etc.], vegetable powders (for example, , Soy flour, tobacco powder, wheat flour, wood flour, etc.), mineral or inorganic powder (eg kaolin, bentonite, acid clay, clays such as clay, talc such as talc powder, wax stone powder, diatomaceous earth, mica powder, etc. Silica, alumina, sulfur powder, activated carbon, potassium chloride, ammonium sulfate, sodium bicarbonate, sodium sulfate, calcium carbonate, magnesium carbonate, etc.). Among these, bentonite and calcium carbonate are particularly preferable. A bulking agent can be used individually or in combination of 2 or more types. In the present invention, the above-mentioned floating aid can also be used as a bulking agent.

  The total amount of the floating aid and the extender used is generally 10 to 95% by weight, preferably 50 to 95% by weight, more preferably about 80 to 95% by weight, based on the total amount of the water surface floating agricultural chemical granular composition. It is. If the amount of floating aid and extender used is too small, the floatability and shape retention of the water-floating pesticide granular composition tends to be insufficient. Therefore, the effectiveness and diffusibility as an agrochemical are likely to decrease.

  The water-floating pesticide granular composition of the present invention preferably contains a polycarboxylic acid surfactant in addition to the above components. Examples of the polycarboxylic acid-based surfactant include a copolymer of maleic acid and styrene sulfonic acid or a salt thereof, a copolymer of isobutylene or diisobutylene and maleic acid or a salt thereof, and a mixture of maleic acid and acrylic acid. Examples thereof include a copolymer or a salt thereof, a polymer of acrylic acid or a salt thereof. Examples of the salt include alkali metal salts such as sodium salt and potassium salt; alkaline earth metal salts such as calcium salt and magnesium salt; ammonium Examples include salt.

  The use amount (total amount) of the polycarboxylic acid or salt thereof is usually 0.1 to 10% by weight, preferably 0.2 to 8% by weight, more preferably 0, based on the entire water-floating pesticide granular composition. About 5 to 5% by weight.

  Moreover, the water-floating pesticide granular composition of the present invention may contain a binder in addition to the above components. By containing a binder, the mechanical strength of the granular composition can be improved.

  Examples of the binder include carboxymethylcellulose salts (such as sodium salts), polyvinyl alcohol or derivatives thereof, water-soluble polymers such as sodium alginate, xanthan gum, and gum arabic. Of these, carboxymethylcellulose salts (such as sodium salts) are preferred. The usage-amount of a binder is 0.1 to 10 weight% normally with respect to the whole water-floating pesticide granular composition, Preferably it is about 0.2 to 8 weight%.

  In addition to the above components, the water-floating pesticide granular composition of the present invention may further contain other additives such as surfactants, preservatives, granulation improvers, disintegrants, and dispersants as necessary. , Emulsifiers, solvents, stabilizers, colorants and the like.

  The water-floating pesticide granular composition of the present invention can be sprayed by a conventional method such as manual seeding and mechanical spraying as in the case of ordinary agricultural chemical preparations, but can also be sprayed from straw or the like. Moreover, the water-floating pesticide granular composition of the present invention can be encapsulated in a water-soluble film to form a pouched pesticide preparation for paddy field treatment, which can be thrown from the bank or the like and applied.

  The water-soluble film may be a film that dissolves or disperses in water. For example, polyvinyl alcohol or a derivative thereof, pullulan, a salt of carboxymethyl cellulose (such as a sodium salt), a water-soluble cellulose derivative, polyethylene oxide or a derivative thereof. A molded film or sheet may be mentioned. Especially, the film or sheet | seat shape | molded from polyvinyl alcohol or its derivative (s) is preferable.

  EXAMPLES Hereinafter, although an Example demonstrates this invention further in detail, this invention is not limited by these Examples.

Examples 1-9, Comparative Examples 1-4
Pesticide active ingredient [Compound A: Generic name “Imazosulfuron” (water solubility 0.31 mg / ml (pH 7)), Compound B: 1- (2-chloro-6-n-propylimidazo [1,2-b] pyridazine- 3-ylsulfonyl) -3- (4,6-dimethoxypyrimidin-2-yl) urea (water solubility 0.15 mg / ml (pH 7)), see formula below], alkanediol derivative [polyoxyethylenealkanediol, commodity Name “New Calgen TG-310”, manufactured by Takemoto Yushi Co., Ltd., HLB = 10.5, compound represented by the above formula (I)], sodium tripolyphosphate, sodium polyacrylate (trade name “Toxanone GR-31A” Sanyo Chemical Industries, Ltd.), sodium carboxymethylcellulose (binder, trade name “Serogen 7A”, Daiichi Kogyo Seiyaku Co., Ltd.), Floating Auxiliary agent [floating aid A: trade name “Microsphere-F-30E” (vinylidene chloride-acrylonitrile resin), manufactured by Matsumoto Yushi Kogyo Co., Ltd., floating aid B: trade name “Microsphere-F-80E” (acrylonitrile resin) ), Matsumoto Yushi Kogyo Co., Ltd.], bentonite (bulking agent, trade name “Kunigel V1”, Kunimine Kogyo Co., Ltd.), calcium carbonate (bulking agent, trade name “Tohoku Tankar (# 250)”, Towa Lime Industry Co., Ltd.) Are mixed at a ratio shown in Table 1 below, and a predetermined amount of water is added and kneaded. An extrusion granulator equipped with a 1.5 mm screen (trade name “RG-5M”, manufactured by Kikusui Seisakusho) And then dried with a fluidized bed dryer (trade name “MDB-400”, manufactured by Fuji Powder Co., Ltd.) to obtain granules (water surface floating agricultural chemical granular composition). The numbers in Table 1 indicate parts by weight, and the “remaining” indicates the remaining amount when the whole is 100 parts by weight.

Evaluation test Each granule 40g obtained by the Example and the comparative example was included in the water-soluble film (Brand name "Kuraray vinylon film VF-HP4000", the Kuraray company make), and the bag-shaped agricultural chemical formulation was obtained. This was dropped into a 1a paddy field containing water having a depth of 5 cm at room temperature. The diffusibility of the granules was evaluated according to the following criteria. The results are shown in Table 1.
A: Grains were uniformly dispersed throughout the paddy field within 30 minutes after the start of release from the water-soluble film.
○: After the start of release of the particles from the water-soluble film, the particles were uniformly dispersed in the whole paddy field in less than 1 hour after 30 minutes.
(Triangle | delta): After the particle | grains started discharge | release from a water-soluble film, the coupling | bonding of particle | grains occurred and time for 1 hour or more was required to disperse | distribute uniformly to the whole paddy field.
X: Since the bonding between the grains was remarkable, the grains were not uniformly dispersed throughout the paddy field.

Claims (10)

Agrochemical active ingredients and the following formula (I)

(In the formula, X ¹ represents a divalent saturated hydrocarbon group having 6 to 14 carbon atoms, A ¹ and A ² each represents an alkylene group having 2 to 4 carbon atoms, and m and n each represents an integer. However, the sum of m and n is any integer of 1 to 7, and when m is an integer of 2 or more, each A ¹ is the same or different, and n is an integer of 2 or more. Each A ² is the same or different)
A water-floating pesticide granular composition comprising an alkanediol derivative represented by the formula: condensed phosphoric acid or a salt thereof, a floating aid and a bulking agent.   Agrochemical active ingredient is 0.1 to 80% by weight, alkanediol derivative represented by formula (I) is 0.1 to 10% by weight, condensed phosphoric acid or salt thereof is 0.1 to 10% by weight, floating aid The water-floating pesticide granular composition according to claim 1, wherein the total amount of the filler and the extender is 10 to 95% by weight.   The water-floating pesticide granular composition according to claim 1 or 2, wherein the condensed phosphoric acid or a salt thereof is contained in an amount of 0.1 to 10 parts by weight with respect to 1 part by weight of the alkanediol derivative.   The water-floating pesticide granular composition according to any one of claims 1 to 3, further comprising a polycarboxylic acid-based surfactant.   The water-floating pesticide granular composition according to claim 4, wherein the content of the polycarboxylic acid surfactant is 0.1 to 10% by weight.   The water-floating pesticide granular composition according to any one of claims 1 to 5, wherein the floating aid is a plastic micro hollow body.   The water-solubility agricultural chemical granular composition according to any one of claims 1 to 6, wherein the water solubility of the agricultural chemical active ingredient at 20 ° C is 0.00001 to 10 mg / ml. X ¹ is a divalent saturated hydrocarbon group which claims 1-7 any one water-floating pesticidal granular composition according to 9 or 10 carbon atoms.   The water-floating pesticide granular composition according to any one of claims 1 to 8, wherein the pesticide active ingredient is a herbicidal active ingredient.   A pouch-shaped pesticide preparation for paddy field treatment in which the water-floating pesticide granular composition according to any one of claims 1 to 9 is encapsulated in a water-soluble film.