JP2015051968A - Aqueous suspended agrochemical composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a novel aqueous suspended agrochemical composition.SOLUTION: An aqueous suspended agrochemical composition comprises (1) thifluzamide, (2) organic thickener and (3) inorganic thickener. The (2) organic thickener is preferably heteropoly saccharide, more preferably xanthan gum. The (3) inorganic thickener is preferably smectite clay mineral, more preferably bentonite. The aqueous suspended agrochemical composition has excellent storage stability for the long term.

Description

  The present invention relates to an aqueous suspension agricultural chemical composition excellent in storage stability.

  Tifluzamide (generic name) is a known compound having bactericidal activity (see, for example, Patent Document 1).

  An aqueous suspension pesticide composition in which a poorly water-soluble pesticide active ingredient is dispersed in water is difficult to ensure the uniformity of the composition under high temperature conditions, and may cause separation of the supernatant or hard caking. If the composition becomes non-uniform during storage, it becomes impossible to spray a predetermined amount, resulting in a risk of insufficient efficacy and phytotoxicity. As an example of an aqueous suspension agricultural chemical composition excellent in storage stability, an aqueous suspension agricultural chemical composition containing an agricultural chemical active ingredient, bentonite and heteropolysaccharide gum is known (for example, see Patent Document 2).

JP-A-2-184680 JP-A-1-175902

  The present inventors use a heteropolysaccharide gum as an organic thickener and use tifluzamide as an agrochemical active ingredient, resulting in a significant decrease in viscosity after storage as compared to the case of using other agrochemical active ingredients. It was found that separation and hard caking occur.

  As a result of intensive studies, the present inventors have found that the above problem can be solved by combining an organic thickener and an inorganic thickener.

  That is, the present invention relates to an aqueous suspension agricultural chemical composition (hereinafter referred to as the present invention composition) described in [1] to [5] below.

  [1] An aqueous suspended agricultural chemical composition comprising (1) tifluzamide, (2) an organic thickener, and (3) an inorganic thickener.

  [2] (2) The aqueous suspension agricultural chemical composition according to the above [1], wherein the organic thickener is a heteropolysaccharide.

  [3] (3) The aqueous suspended agricultural chemical composition according to the above [1] or [2], wherein the inorganic thickener is a smectite clay mineral.

  [4] (2) Any one selected from [1] to [3] above, containing 0.2 to 1.2 parts by weight of an inorganic thickener with respect to 1 part by weight of the organic thickener. An aqueous suspension pesticide composition.

  [5] (2) The aqueous suspension agricultural chemical composition according to any one of [1] to [4], wherein the organic thickener is xanthan gum.

  The composition of the present invention does not cause viscosity reduction, supernatant separation and hard caking after storage.

  The content of tifluzamide in the composition of the present invention is usually 0.01 to 50 parts by weight, preferably 0.1 to 40 parts by weight with respect to 100 parts by weight of the composition of the present invention.

  The composition of the present invention can be used in combination with agrochemical active ingredients other than tifluzamide, in particular, bactericides, bactericides, nematicides, insecticides, acaricides, anthelmintics, antibacterial agents and antifungal agents. An example of the general name is as follows.

  Bactericides: azoxystrobin, kresoxim-methyl, pyraclostrobin, picoxystrobin, fluoxastrobin, dimoxystrobin , Orysastrobin, metominostrobin, trifloxystrobin, amisulbrom, cyazofamid, famoxadone, amethoctrazine, ametoctradin, tripyricarb 2200 (test name), penthiopyrad, flutolanil, furametpyr, boscalid, bixafen, carboxin, mepronil, fluopyram, fluopyram Sofetamide (isofetamid), sedaxane, oxycarboxin, isopyrazam, kasugamycin, penflufen, fluxapyroxad, benzovindiflupyr, benzovindiflupyr 0721 (study name), simeconazole, tebuconazole, fenbuconazole, hexaconazole, imibenconazole, triadimefon, tetraconazole, proti Oconazole, proxiconazole, ipconazole, metconazole, propiconazole, cyproconazole, difenocona zole) diniconazole, fluquinconazole, flusilazole, penconazole, bromuconazole, triadimenol, flutriafol, microbutanil, etaconazole etaconazole), bitertanol triforine, pyrifenox, nuarimol, fenarimol, fenarimol, imazalil, triflumizole, pefurazoate, oxpoconazole Fumarate (oxpoconazole fumarate), prochloraz, aldimorph, tridemorph, fenpropimorph, dodemorph-acetate, fenpropimol (Fenpropimorph), piperalin, spiroxamine, fenhexamid, fenpyrazamine, pyrisoxazole, benomyl, carbendazim, carbendazim, fuberidazole, Thiabendazole, thiophanate-methyl, diethofencarb, zoxamide, quinoxyfen, fludioxonil, iprodione, procymidone, budiquinone, budiquinone (Cyprodinil), mepanipyrim, pyrimethanil, cupric hydroxide, copper carbonate, basic, copper sulfate, basic, oxyquinoline (Oxine copper), basic copper oxychloride, copper sulfate, bordeaux mixture, calcium polysulfide, sulfur, mancozeb, maneb , Thiram, captan, folpet, chlorothalonil, iminoctadine-albesilate, polycarbamate, dithianon, dodine acibenzoral S-methyl (acibenzolar-S-methyl), probenazole, isotianil, thiadinyl, dimethomorph, mandipropamid, benchthiavalicarb-isopropyl metalaxyl ), Metalaxyl-M, Shimoki Nyl (cymoxanil), fosetyl-aluminium, flusulfamide, flufluamide, cyflufenamid, metrafenone, pyriofenone, oxathiapiproline, oxathiapiproline, fluicolide, fluicolide ), Fluazinam, tricyclazole, carpropamid, fthalide, diclocymet, flutianil, tolprocarb, NF-171 (test name) MIF-1002 (test name) ), SB-4303 (test name), NK-1001 (test name), and the like.

  Bactericides: streptomycin, oxytetracycline, oxolinic acid, etc.

  Nematicides: cadusafos, dichlofenthion, etoprophos, fenamiphos, fluensulfone, fosthiazate, fostthietan, fosthietan, phosphat , Isazofos, methyl bromide, methyl isothiocyanate, oxamyl, sodium azide, BYI-1921 (test name) and MAI-08015 (test name) Such.

  Insecticides: abamectin, acephate, acetamiprid, afidopyropen, afoxolaner, alanycarb, aldicarb, allethrin, azaphos Ethyl (azinphos-ethyl), azinphos-methyl, bacillus thuringiensis, bendiocarb, benfluthrin, benfuracarb, bensultap, bifenthrin ), Bioallethrin, bioresmethrin, bistrifluron, buprofezin, butocarboxim, carbaryl, carbofura (Carbofuran), carbosulfan, cartap, chlorantraniliprole, chlorethoxyfos, chlorfenapyr, chlorfenvinphos, chlorfluazuron ( chlorfluazuron, chlormephos, chlorpyrifos, chlorpyrifos-methyl, chromafenozide, clothianidin, cyanophos, cyantraniliprole, cyclothrinprole (cyclothrin) ), Cyfluthrin, beta-cyfluthrin, cyhalothrin, gamma-cyhalothrin, lambda-cyhalothrin, cypermethr in), alpha-cypermethrin (alpha-cypermethrin), beta-cypermethrin (beta-cypermethrin), zeta-cypermethrin (zeta-cypermethrin), cyphenothrin (cyphenothrin), cyromazine, deltamethrin (deltamethrin), dia Difenthiuron, diazinon, dichlorvos, diflubenzuron, dimethoate, dimethylvinphos, dinotefuran, diofenolan, disulfoton, disulfoton Benzoate (emamectin-benzoate), enpentrin (empenthrin), endosulfan (endosulfan), alpha-endosulfan (alpha-endosulfan), EPN (EPN), esfenvalerate (esfenvalerate), etiofencarb (ethi ofencarb), ethiprole, etofenprox, etrimfos, fenitrothion, fenobucarb, phenoxycarb, fenoxycarb, fenthion, fenvalerate, fipronil ), Flometoquin, flonicamid, fluazuron, flubendiamide, flucycloxuron, flucythrinate, flufenerim, flufenoxuron, Flufiprole, flumethrin, flupyradifurone, fluralaner, fluvalinate, tau-fluvalinate, fonofos , Furathiocarb, halofenozide, heptafluthrin, hexaflumuron, hydramethylnon, hydramethylnon, imidacloprid, imiprothrin, indoxacarb, indoxacarb Xacarb-MP (indoxacarb-MP), isoprocarb, isoxathion, lepimectin, lufenuron, malathion, meperfluthrin, metaflumizone, metaaldehyde , Methacrifos, methamidophos, methidathion, metomyl, metoprene, methoxychlor, methoxyfenozide, Tofluthrin, muscalure, nitenpyram, novaluron, noiflumuron, omethoate, oxydemeton-methyl, parathion-methyl, permethrin permethrin, phenothrin, phenothate, phenthoate, phorate, phosalone, phosmet, phoxim, pirimicarb, pirimiphos-methyl, profenofos ), Prothiofos, pyrometrozine, pyraclofos, pyrethrins, pyridalalyl, pyrifluquinazon, pyriprole, pyriproxyfen , Resmethrin, rotenone, silafluofen, spinetoram, spinosad, spirotetramat, sulfotep, sulfoxaflor, tebufenide (tebufenide) Teflubenzuron, tefluthrin, terbufos, tetrachlorvinphos, tetramethrin, dT-80-phthalthrin, tetramethylfluthrin, tetramethylfluthrin, Thiacloprid, thiamethoxam, thiocyclam, thiodicarb, thiofanox, thiometon, tolfenpyrad, tralomethrin methrin), transfluthrin, triazamate, trichlorfon, triflumuron, ME5382 (test name), (Z)-[5- (3,5-dichlorophenyl) -5-trifluoro Methyl-4,5-dihydroisoxazol-3-yl] -N- (methoxyiminomethyl) -2-methylbenzoic acid amide and ZDI2501 (test name).

  Acaricides: acequinocyl, acrinathrin, amidoflumet, amitraz, azocyclotin, benzoximate, bifenazate, bromopropylate, clopropylate Clofentezine, cyenopyrafen, cyflumetofen, dicohol, dinochlor, etoxazole, fenazaquin, fenbutatin oxide, phenocarb, fenothiocarb Propatrin (fenpropathrin), fenpyroximate (flupyryoximate), fluacrypyrim (fluacrypyrim), formethanate (formetanate), halfenprox (halfenprox), hexythiazox (hexythia zox, milbemectin, propargite, piflubumide, pyridaben, pyrimidifen, spirodiclofen, spiromesifen, tebufenpyrad and NA-89 (Exam name).

  Anthelmintic: acriflavine, albendazole, atovaguone, azithromycin, bithionol, bromfenofos, cambendazole, carnidazole, chloroquine chloroquine, clazuril, clindamycin hydrochloride, clorsulon, closantel, coumaphos, cymiazol, dichlorophen, dichlorophen, diethylcarbamazine, diminazen (Diminazene), disophenol, dithiazanine iodide, doxycycline hydrochloride, doramectin, emodepside, eprinomecti (eprinomecti) n), febantel, fenbendazole, flubendazole, furazolidone, glycalpyramide, imidocarb, ivermectin, levamisole, mebendazole ( mebendazole, mefloquine, melarsamine dihydrochloride (melarsamine hydrochloride), metronidazole, metyridine, milbemycin oxime, monepantel, morantel tartrate, moxidectin , Nicarbazin, niclosamide, nitroscanate, nitroxynil, omphalotin, oxantel pamoate, tartar Oxantel tartrate, oxfendazolee, oxibendazole, oxyclozanide, pamaquine, phenothiazine, piperazine adipate, piperazine citrate , Piperazine phosphate, PNU-97333 (paraherquamide A), PNU-141962 (2-deoxyparaherquamide), praziquantel, primaquine, propetamphos, propoxur, pyrantel pamoate ( pyrantel pamoate, pyrimethamine, santonin, selamectin, sulfadimethoxine, sulfadoxine, sulfamerazine, sulphamerazine Fan monomethoxy emissions (sulfamonomethoxine), sulfamoyl dapsone (sulfamoildapsone), thiabendazole (thiabendazole), tinidazole (tinidazole), toltrazuril (toltrazuril), and tri brominated Saran (tribromsalan) and triclabendazole (triclabendazole).

  Antibacterial agents: amoxicillin, ampicillin, bethoxazin, bithionol, bronopol, cefapirin, cefazolin, cefquinome, cefquinome, cefurthiofluce (Chlortetracycline), clavulanic acid, danofloxacin, difloxacin, dinitrmide, enrofloxacin, florfenicol, lincomycin, lomefoxacin ( lomefloxacin, marbofloxacin, miloxacin, milosamycin, nitrapyrin, norfloxacin, octhilinone, ofl Ofloxacin, orbifloxacin, penicillin, thiamphenicol, tiamulin fumarate, tilmicosin phosphate, tylosin isovaleryltylosin acetate, Examples include tylosin phosphate, tulathromycin, valnemulin, calcined calcium (calcium oxide), taralomyces, trichoderma and uniotylium.

  Antifungal agents such as ketoconazole and miconazole nitrate.

  Agrochemical active ingredients other than the above tifluzamide can be used alone or in admixture of two or more. Among the pesticidal active ingredients other than tifluzamide, for example, amisulbrom, kasugamycin and sulfoxafurol can be mentioned. The total content of the pesticidal active ingredient other than tifluzamide in the composition of the present invention is usually 0.01 to 50 parts by weight, preferably 0.1 to 40 parts by weight with respect to 100 parts by weight of the composition of the present invention.

  Organic thickeners used in the present invention include heteropolysaccharides such as xanthan gum, welan gum, guar gum, dieutan gum, gellan gum, lanthanum gum and locust bean gum, polyvinyl alcohol, polyvinyl pyrrolidone, polyacrylic acid, sodium polyacrylate and poly Examples thereof include synthetic water-soluble polymer compounds such as acrylamide, and cellulose derivatives such as methyl cellulose, carboxymethyl cellulose, carboxyethyl cellulose, hydroxyethyl cellulose, and hydroxypropyl cellulose. Among the organic thickeners, heteropolysaccharides are preferable, and xanthan gum is more preferable.

  Specific examples of the heteropolysaccharide gum include, for example, KELZAN, KELZAN S, KELZAN ST, KELZAN ASX, KELZAN ASXT, KELZAN M, KELZAN AR and KELZAN AP (above, trade names / CPKELCO) and RHODOPOL P23 as xanthan gum. (Above, trade name / manufactured by Rhodia) and the like, K1A96 (trade name / manufactured by CPKelco) and the like are listed as welan gum, and NEOVISCO G and MEYPROGAT (above, trade name / manufactured by Sanki Co., Ltd.) as guar gum KELCO-CRETE DG (trade name / manufactured by CPKelco) and the like are listed as a diy tang gum, and KELCOGEL as a gellan gum. AFT (trade name / manufactured by CPKelco) and RHEX-GP2 (trade name / manufactured by Sanki Co., Ltd.) and the like, and K1A112 and K7C233 (above, trade name / manufactured by CPKelco) and the like are listed as lanthanum gum.

  Content of the organic thickener in this invention composition is 0.01-5 weight part normally with respect to 100 weight part of this invention composition, Preferably it is 0.1-2 weight part.

  Examples of the inorganic thickener used in the present invention include montmorillonite, saponite, hectorite, bentonite, beidellite, nontronite, sauconite, stevenside, laponite, synthetic smectite and other smectite clay minerals, hydrous silica, anhydrous silica, and hydrous silicate. And white carbon.

  Specific examples of bentonite include, for example, VAN GEL B, VEEGUM R, VEEGUM granule, VEEGUM F, VEEGUM HV granule, VEEGUM HS granule, VEEGUM K granu, VEEGUM PRO, VEEGUUM PRO, VEEGUM PRO. Name / RT VANDERBILT), Kunipia F and Kunipia K (above, trade name / Kunimine Kogyo Co., Ltd.), Bent Farm (trade name / BROMHEAD & DENSON), Bengel, Bengel HV and Bengel FW (The above is a trade name / manufactured by Hojun Co., Ltd.).

  Content of an inorganic thickener is 0.01-5 weight part normally with respect to 100 weight part of this invention composition, Preferably it is 0.1-2 weight part.

  The content ratio of the organic thickener and the inorganic thickener is usually 0.2 to 1.2 parts by weight, preferably 0.4 to 1.2 parts by weight with respect to 1 part by weight of the organic thickener. More preferably, it is 0.7 to 1.2 parts by weight.

  The composition of the present invention can contain a surfactant, and examples of the surfactant include the following (A), (B), (C), (D) and (E).

(A) Nonionic surfactant:
(A-1) Polyethylene glycol type surfactant: For example, polyoxyethylene alkyl (C _12-18 ) ether, ethylene oxide adduct of alkyl naphthol, polyoxyethylene (mono or di) alkyl (C _8-12 ) phenyl Ether, formalin condensate of polyoxyethylene (mono or di) alkyl ( _C8-12 ) phenyl ether, polyoxyethylene (mono, di or tri) phenyl phenyl ether, polyoxyethylene (mono, di or tri) benzyl phenyl Ether, polyoxypropylene (mono, di or tri) benzyl phenyl ether, polyoxyethylene (mono, di or tri) styryl phenyl ether, polyoxypropylene (mono, di or tri) styryl phenyl ether, polyoxy Styrene (mono-, di- or tri-) styryl phenyl ether polymer, polyoxyethylene polyoxypropylene block polymers, alkyl _{(C 12 to 18)} polyoxyethylene polyoxypropylene block polymer ethers, alkyl _{(C 8 to 12)} phenyl polyoxyethylene Ethylene polyoxypropylene block polymer ether, polyoxyethylene bisphenyl ether, polyoxyethylene resin acid ester, polyoxyethylene fatty acid (C _12-18 ) monoester, polyoxyethylene fatty acid (C _12-18 ) diester, polyoxyethylene sorbitan fatty acid (C _{12 to 18)} ester, glycerol fatty acid ester ethylene oxide adducts, polyoxyethylene castor oil ethers, hardened castor oil ethylene Kisaido adducts, alkyl _{(C 12 to 18)} amine ethylene oxide adduct and a fatty acid _{(C 12 to 18)} amide ethylene oxide adducts.

(A-2) Polyhydric alcohol type surfactant: For example, glycerol fatty acid ester, polyglycerin fatty acid ester, pentaerythritol fatty acid ester, sorbitol fatty acid (C _12-18 ) ester, sorbitan fatty acid (C _12-18 ) ester, Examples thereof include sugar fatty acid esters, polyhydric alcohol alkyl ethers, and fatty acid alkanolamides.

  (A-3) Acetylene-based surfactant: Examples thereof include acetylene glycol, acetylene alcohol, an ethylene oxide adduct of acetylene glycol, and an ethylene oxide adduct of acetylene alcohol.

  (A-4) Other surfactants: Examples include alkyl glycosides.

(B) Anionic surfactant:
(B-1) Carboxylic acid type surfactants: for example, polyacrylic acid, polymethacrylic acid, polymaleic acid, copolymers of maleic acid and olefins (such as isobutylene and diisobutylene), acrylic acid and itaconic acid Copolymer, methacrylic acid and itaconic acid copolymer, maleic acid and styrene copolymer, acrylic acid and methacrylic acid copolymer, acrylic acid and acrylic acid methyl ester copolymer, acrylic acid And vinyl acetate copolymer, acrylic acid and maleic acid copolymer, N-methyl-fatty acid (C _12-18 ) sarcosinate, carboxylic acids such as resin acid and fatty acid (C _12-18 ), and carboxylic acids thereof Examples include acid salts.

(B-2) Sulfate ester type surfactant: For example, alkyl (C _12-18 ) sulfate ester, polyoxyethylene alkyl (C _12-18 ) ether sulfate ester, polyoxyethylene (mono or di) alkyl (C _{8 -12} ) phenyl ether sulfate, polyoxyethylene (mono or di) alkyl ( _C8-12 ) phenyl ether polymer sulfate, polyoxyethylene (mono, di or tri) phenyl phenyl ether sulfate, polyoxyethylene (Mono, di or tri) benzyl phenyl ether sulfate, polyoxyethylene (mono, di or tri) styryl phenyl ether sulfate, polyoxyethylene (mono, di or tri) styryl phenyl ether polymer sulfate, Sulfate esters of shea polyoxypropylene block polymer, a sulfated oil, fatty acid ester sulfuric, salts of sulfuric acid esters, and their sulfates, such as sulfated fatty acids and sulfated olefins.

(B-3) Sulfonic acid type surfactant: For example, paraffin ( _C12-22 ) sulfonic acid, alkyl ( _C8-12 ) benzenesulfonic acid, alkyl ( _C8-12 ) benzenesulfonic acid formalin condensate, Formalin condensate of cresol sulfonic acid, α-olefin (C _14-16 ) sulfonic acid, dialkyl (C _8-12 ) sulfosuccinic acid, lignin sulfonic acid, polyoxyethylene (mono or di) alkyl (C _8-12 ) phenyl Ether sulfonic acid, polyoxyethylene alkyl (C _12-18 ) ether sulfosuccinic acid half ester, naphthalene sulfonic acid, (mono or di) alkyl (C _1-6 ) naphthalene sulfonic acid, formalin condensate of naphthalene sulfonic acid, (mono or di) alkyl _{(C 1 to 6)} naphthalene Formalin condensates of sulfonic acid, formalin condensates of creosote oil sulfonic acid, alkyl (C _{8 to 12)} ether disulfonic acid, Igepon T (trade name), a copolymer of polystyrene sulfonic acid and styrene sulfonic acid and methacrylic acid And the sulfonic acid salts thereof.

(B-4) Phosphate ester type surfactants: for example, alkyl (C _8-12 ) phosphate ester, polyoxyethylene alkyl (C _12-18 ) ether phosphate ester, polyoxyethylene (mono or di) alkyl (C _{8 -12} ) phenyl ether phosphate ester, polyoxyethylene (mono, di or tri) alkyl ( _C8-12 ) phenyl ether polymer phosphate ester, polyoxyethylene (mono, di or tri) phenyl phenyl ether phosphate ester, poly Oxyethylene (mono, di or tri) benzyl phenyl ether phosphate ester, polyoxyethylene (mono, di or tri) styryl phenyl ether phosphate ester, polyoxyethylene (mono, di or tri) styryl phenyl ether polymer phosphate ester, Polio Examples thereof include phosphoric acid esters of xyethylene polyoxypropylene block polymers, phosphoric acid esters such as phosphatidylcholine, phosphatidylethanolimine and condensed phosphoric acid (for example, tripolyphosphoric acid), and salts of these phosphoric acid esters.

  Examples of the salt in the above (B-1) to (B-4) include alkali metals (lithium, sodium, potassium, etc.), alkaline earth metals (calcium, magnesium, etc.), ammonium and various amines (for example, alkylamine, cyclohexane). Alkylamine and alkanolamine).

(C) Cationic surfactant:
Examples thereof include alkylamine salts and alkyl quaternary ammonium salts.

(D) Amphoteric surfactant:
Examples thereof include betaine type surfactants and amino acid type surfactants.

(E) Other surfactants:
For example, silicone surfactants and fluorine surfactants can be used.

  Said surfactant can be used individually or in mixture of 2 or more types, The ratio in the case of mixing can also be selected freely. The total content of the surfactant in the composition of the present invention is usually 0.1 to 15 parts by weight, preferably 1 to 10 parts by weight with respect to 100 parts by weight of the composition of the present invention.

  Various adjuvants can be further contained in the composition of the present invention. Adjuvants that can be used include organic solvents, pH adjusters, antifreezing agents, antifoaming agents, antibacterial and antifungal agents, colorants and salts, and include the following.

Examples of the organic solvent include alcohols such as ethylene glycol, diethylene glycol, propylene glycol, dipropylene glycol and isopropanol, ethers such as butyl cellosolve, ketones such as cyclohexanone, esters such as γ-butyrolactone, N-methylpyrrolidone and N - acid amides such as octyl pyrrolidone, polar solvent, xylene, alkyl (C ₉ or C _10, etc.) benzene, phenylxylylethane and alkyl (C ₁ or C _3, etc.) aromatic hydrocarbons such as naphthalene and the like, Machine oil, aliphatic hydrocarbons such as normal paraffin, isoparaffin and naphthene, mixtures of aromatic and aliphatic hydrocarbons such as kerosene, soybean oil, linseed oil, rapeseed oil, coconut oil, cottonseed oil and castor oil Fats and oils, etc. Polar solvent, and the like.

  As the pH regulator, for example, various inorganic acids and organic acids such as hydrochloric acid, sulfuric acid, phosphoric acid, sulfonic acid and carboxylic acid, and salts and esters thereof can be used. Specific examples of the organic acid include acidic phosphate, citric acid, maleic acid, sorbic acid, lactic acid, and tartaric acid. Various buffer solutions such as disodium hydrogen phosphate-citric acid aqueous solution, sodium acetate-hydrochloric acid aqueous solution, formic acid-sodium formate aqueous solution, lactic acid-sodium lactate aqueous solution, tartaric acid-sodium tartrate aqueous solution and sodium citrate-hydrochloric acid aqueous solution are also provided. It is also possible to adjust the pH by adding a fixed amount.

  As the antifreezing agent, for example, ethylene glycol, diethylene glycol, propylene glycol, glycerin and the like can be used. Preferred are propylene glycol and glycerin. Moreover, content in this invention composition can also be selected freely.

  Further, an antifoaming agent such as a silicone emulsion, an antibacterial and antifungal agent, a coloring agent, and the like may be blended.

  Although it does not specifically limit as a salt, For example, alkali metal salts (lithium, sodium, potassium, etc.), alkaline-earth metals of various inorganic acids and organic acids, such as hydrochloric acid, a sulfuric acid, phosphoric acid, carbonic acid, a sulfonic acid, and carboxylic acid Examples thereof include salts (such as calcium and magnesium), ammonium and various amine salts (such as alkylamine, cycloalkylamine and alkanolamine).

  The production method of the composition of the present invention is not particularly limited, and can be obtained by adding each of the aforementioned components to water and mixing with a stirrer. If necessary, the pesticidal active ingredient, surfactant and other auxiliary agents may be singly or mixed and finely pulverized by a dry or wet pulverizer.

  Dry pulverization can be performed with an impact pulverizer, a ball mill, a jet mill or the like. The fine pulverization by wet pulverization can be performed by a wet pulverizer such as an attritor, a sand grinder, a dyno mill, a pearl mill, an apex mill, a visco mill, and an ultra visco mill.

  Plant compositions can be controlled by applying the composition of the present invention by general methods commonly used by those skilled in the art, such as foliage treatment, soil treatment, paddy water surface treatment, seedling box (tray) treatment, and seed disinfection. In the case of foliage treatment or soil treatment, it is usually diluted 10 to 5000 times with water and sprayed on a crop or tree or the soil where it grows using a sprayer or the like, or using a helicopter from the air, Dilute to 2-100 times with undiluted solution or water and spray. In the case of paddy water surface treatment, it is usually sprayed directly on the paddy field as the stock solution.

  EXAMPLES Next, although an Example is given and this invention is demonstrated further in detail, this invention is not limited to these. In the following, “part” means part by weight. In addition to tifluzamide, the aqueous suspension pesticidal composition described as an example below may further contain one or more pesticidal active ingredients selected from amisulbrom, kasugamycin, sulfoxafur, and the like.

[Example 1]
1. Preparation of pulverized slurry Bentonite [trade name: VEEGUM R, R.R. T.A. VANDERBILT, Inc.] 0.2 parts, polyoxyethylene tridecyl ether [trade name: SYNPERONIC 13 / 12-LQ, produced by Croda] 2 parts, mixture of acrylic copolymer and propylene glycol [trade name: ATLOX 4913-LQ 3 parts, propylene glycol 6 parts and silicone antifoaming agent [trade name: DOW CORNING ANTIFOAM C EMULSION, DOW CORNING Co., Ltd.] 0.5 part is dispersed in this, and tifluzamide active ingredient (active ingredient concentration) : 96.18%) 22.04 parts were dispersed and wet-pulverized with a sand grinder (manufactured by Imex Co., Ltd.) using 0.8-1.2 mmφ glass beads to obtain 75 parts of a pulverized slurry.

2. Preparation of dispersion medium Xanthane gum (trade name: RHODOPOL 23, manufactured by Rhodia) 0.4 parts and 1,2-benzisothiazolin-3-one (trade name: PROXEL GXL, manufactured by Avecia) in 24.56 parts of water 04 parts were dispersed to obtain 25 parts of a dispersion medium.

3. Preparation of Aqueous Suspended Pesticide Composition 75 parts of the pulverized slurry and 25 parts of a dispersion medium were mixed to obtain 100 parts of an aqueous suspended agrochemical composition.

[Example 2]
41.16 parts of water in the pulverized slurry of Example 1 was changed to 41.16 parts, and bentonite [trade name: VEEGUMR, R.R. T.A. Manufactured by the same method as in Example 1 except that 0.2 part was changed to 0.3 part] to obtain an aqueous suspended agricultural chemical composition.

Example 3
1. Preparation of pulverized slurry 41.46 parts of water was mixed with 2 parts of polyoxyethylene tridecyl ether [trade name: SYNPERONIC 13 / 12-LQ, manufactured by Croda], a mixture of acrylic copolymer and propylene glycol [trade name: ATLOX 4913- LQ, manufactured by Croda Co., Ltd.] 3 parts, propylene glycol 6 parts, and silicone-based antifoaming agent [trade name: DOW CORNING ANTIFOAM C EMULSION, manufactured by DOW CORNING Co., Ltd.] 0.5 part, and tifluzamide active ingredient 22.04 Part was dispersed and wet pulverized using a 0.8-1.

2. Preparation of dispersion medium Xanthan gum (trade name: RHODOPOL 23, manufactured by Rhodia) 0.4 parts, 1,2-benzisothiazolin-3-one (trade name: PROXEL GXL, manufactured by Avecia) in 24.26 parts of water 04 parts and bentonite [trade name: VEEGUMR, R.R. T.A. VANDERBILT Co.] 0.3 parts were dispersed to obtain 25 parts of a dispersion medium.

3. Preparation of Aqueous Suspended Pesticide Composition 75 parts of the pulverized slurry and 25 parts of a dispersion medium were mixed to obtain 100 parts of an aqueous suspended agrochemical composition.

Example 4
41.26 parts of water in the pulverized slurry of Example 1 was changed to 41.06 parts, and bentonite [trade name: VEEGUMR, R.R. T.A. Manufactured in the same manner as in Example 1 except that 0.2 part was changed to 0.4 part] to obtain an aqueous suspended agricultural chemical composition.

Example 5
41.26 parts of water in the pulverized slurry of Example 1 was changed to 41.36 parts, and bentonite [trade name: VEEGUMR, R.R. T.A. Manufactured by the same method as in Example 1 except that 0.2 part was changed to 0.1 part] to obtain an aqueous suspended agricultural chemical composition.

[Comparative Example 1]
41.26 parts of water in the pulverized slurry of Example 1 was changed to 41.46 parts, and bentonite [trade name: VEEGUMR, R.R. T.A. Manufactured by the same method as in Example 1 except that 0.2 part was changed to 0 part] to obtain an aqueous suspended agricultural chemical composition.

[Test example]
The aqueous suspension pesticide compositions obtained in Examples 1 to 5 and Comparative Example 1 were placed in a 30 ml vial and stored in a constant temperature bath at 54 ° C. for 4 weeks and 8 weeks. The viscosity immediately after production, the viscosity after storage, the separation of the supernatant after storage, and the occurrence of hard caking after storage were measured, and the results are shown in Table 1. Each measurement was performed under the following conditions.

[Viscosity measurement]
Using a B-type viscometer (VISCOMETER DV-II + Pro, manufactured by BROOKFIELD), rotor No. 2. The viscosity after 2 minutes from the start of measurement was measured at 30 rpm.

[Supernatant separation measurement]
The height from the bottom of the vial to the top of the sample was Xcm, the height of the supernatant after storage (the clear layer formed above) was Ycm, and the separation of the supernatant was calculated according to the following formula.

Separation (%) = Y (cm) / X (cm) × 100

Table 1 ――――――――――――――――――――――――――――――――――――――――
Viscosity Supernatant separation Hard caking
(MPa · s) (%) generation ―――――――――――――――――――――――――――――――――――――――
Example 1 Immediately after production 827
After 4 weeks at 54 ° C 788 0 None
54 weeks after 8 weeks 699 0 None

Example 2 Immediately after production 771
After 4 weeks at 54 ° C 793 0 None
After 8 weeks at 54 ° C 785 0 None

Example 3 Immediately after production 856
After 4 weeks at 54 ° C 760 0 None
After 8 weeks at 54 ° C 783 0 None

Example 4 Immediately after manufacture 767
4 weeks after 54 ° C 794 0 None
After 8 weeks at 54 ° C 800 0 None

Example 5 Immediately after production 825
After 4 weeks at 54 ° C 642 3 None
After 5 weeks at 54 ° C 451 25 None

Comparative Example 1 Immediately after production 719
There are 173 60 after 4 weeks at 54 ° C
After 54 ° C 8 weeks 37 74 Yes --------------

The composition of the present invention can be used for controlling pests such as pathogenic bacteria.

Claims (5)

  An aqueous suspension agricultural chemical composition containing (1) tifluzamide, (2) an organic thickener, and (3) an inorganic thickener.   (2) The aqueous suspension agricultural chemical composition according to claim 1, wherein the organic thickener is a heteropolysaccharide.   (3) The aqueous suspension agricultural chemical composition according to claim 1 or 2, wherein the inorganic thickener is a smectite clay mineral.   (2) The aqueous suspension according to any one of claims 1 to 3, which contains 0.2 to 1.2 parts by weight of (3) an inorganic thickener with respect to 1 part by weight of the organic thickener. Pesticide composition. (2) The organic suspended thick agricultural chemical composition according to any one of claims 1 to 4, wherein the organic thickener is xanthan gum.