JP5704297B2 - Aqueous suspension pesticide composition with improved water surface diffusibility and dispersibility in water - Google Patents

Description

  The present invention relates to an aqueous suspended agricultural chemical composition that improves dispersibility in water when introduced into water.

Conventionally, spraying herbicides in paddy fields has generally been sprayed with granules. However, for example, a granule needs an application amount of about 1 to 3 kilograms per 10 ares, and in a paddy field with a large area, it is necessary to move within the paddy field and spray it evenly. There is a growing demand for spraying small amounts of agricultural chemicals.
Therefore, an aqueous suspension pesticide composition has been developed for the purpose of saving labor and increasing efficiency during spraying. Unlike aqueous suspension pesticide compositions used in upland fields, etc., this dosage form is used for spraying in paddy fields. Dispersion in is very important to stabilize the herbicidal effect.
For this reason, with regard to diffusion on the water surface and dispersion in the water, an aqueous suspension herbicide composition that has been adjusted in specific gravity by containing paraffinic hydrocarbons has been sprayed on paddy fields and diffused quickly on the water surface. Thus, there is provided a method for expressing the medicinal effect on the entire paddy field (for example, see Patent Document 1).

  However, such an aqueous suspension herbicide composition can cause pesticidal active ingredients adhering to rice plants together with paraffinic hydrocarbons, causing phytotoxicity, and is a safer way to diffuse and disperse in water. There is a need to provide an aqueous suspension herbicidal composition that can achieve the above.

JP 2009-084179 A

  The present invention solves the above problems.

  As a result of intensive studies, the present inventors have selected one or more selected from acetylene glycol and its polyoxyalkylene adduct, polyoxyalkylene styryl phenyl ether phosphate ester, polyoxyalkylene styryl phenyl ether sulfate ester and salts thereof. Selected from alkylbenzenesulfonic acid, formalin condensate of alkylbenzenesulfonic acid, naphthalenesulfonic acid, alkylnaphthalenesulfonic acid, formalin condensate of naphthalenesulfonic acid, formalin condensate of alkylnaphthalenesulfonic acid and salts thereof It has been found that in an aqueous suspension agricultural chemical composition containing one or more species, diffusion on the water surface and dispersion in water are greatly improved, and dripping marks on paddy soil are remarkably suppressed.

  That is, the present invention relates to an aqueous suspended agricultural chemical composition (hereinafter referred to as the present invention composition) described in [1] to [3] below.

  [1] (1) one or more selected from pesticidal active ingredients and salts thereof, (2) one or more selected from acetylene glycol and its polyoxyalkylene adduct, (3) polyoxyalkylene styrylphenyl ether phosphate One or more selected from esters, polyoxyalkylene styryl phenyl ether sulfates and salts thereof, and (4) alkylbenzenesulfonic acid, formalin condensate of alkylbenzenesulfonic acid, naphthalenesulfonic acid, alkylnaphthalenesulfonic acid, naphthalenesulfonic acid An aqueous suspended agricultural chemical composition containing at least one selected from a formalin condensate, a formalin condensate of alkylnaphthalenesulfonic acid, and a salt thereof.

  [2] The aqueous suspension pesticide composition according to the above [1], wherein the pesticidal active ingredient is a sulfonylurea compound.

  [3] The aqueous suspension pesticide composition according to the above [2], wherein the sulfonylurea compound is pyrazosulfuronethyl, halosulfuronmethyl or metazosulfuron.

  The composition of the present invention is excellent in diffusion on the water surface and dispersion in water when it is sprayed onto a paddy field.

  The agrochemical active ingredient contained in the aqueous suspension pesticide composition of the present invention is not particularly limited, but is preferably a solid at room temperature. Examples of the agrochemical active ingredient include herbicides, insecticides, acaricides, nematicides, antiviral agents, plant growth regulators, fungicides, synergists, attractants and repellents. An example of the general name is as follows.

  Herbicides: azimsulfuron, amidosulfuron, iodosulfuron-methyl, imazosulfuron, ethametsulfuron-methyl, ethoxysulfuron, ethoxysulfuron, Oxasulfuron, orthosulfamuron, chlorimuron-ethyl, chlorsulfuron, cyclosulfamuron, cinosulfuron, sulfosulfuron , Sulfometuron-methyl, thifensulfuron-methyl, triasulfuron, tritosulfuron, triflusulfuron-methyl, trifloxysulfuron ( trifloxy sulfuron, tribenuron-methyl, nicosulfuron, halosulfuron-methyl, pyrazosulfuron-ethyl, foramsulfron, flazasulfuron ( flazasulfuron, primisulfuron-methyl, flucetosulfuron, flupirsulfuron, prosulfuron, bensulfuron-methyl, mesosulfuron-methyl ( mesosulfron-methyl), metsulfuron-methyl, rimsulfuron, 2-chloro-N- (4,6-dimethoxypyrimidin-2-ylcarbamoyl) -7-propylimidazo [1,2-b ] Pyridazine-3-sulfonamide, 3-chloro-N- (4,6-dimethoxypyrimidin-2-ylcarbamoyl) -1-methyl -4- (5-methyl-5,6-dihydro-1,4,2-dioxazin-3-yl) -1H-pyrazole-5-sulfonamide, 3-chloro-N- (4,6-dimethoxypyrimidine- 2-ylcarbamoyl) -1-methyl-4- (6-methyl-5,6-dihydro-1,4,2-dioxazin-3-yl) -1H-pyrazole-5-sulfonamide, 3-chloro-4 -(5,6-dihydro-1,4,2-dioxazin-3-yl) -N- (4,6-dimethoxypyrimidin-2-ylcarbamoyl) -1-methyl-1H-pyrazole-5-sulfonamide, N- (4,6-Dimethoxypyrimidin-2-ylcarbamoyl) -1-methyl-4- (5-methyl-5,6-dihydro-1,4,2-dioxazin-3-yl) -1H-pyrazole- 5-sulfonamide, N- (4,6-dimethoxypyrimidin-2-ylcarbamoyl) -1-methyl-4- (6-methyl-5,6-dihydro-1,4,2-dioxazin-3-yl) -1H-pyrazole-5-sulfonamide, 4- (5,6-dihydro-1,4,2-dioxazin-3-yl) -N- (4,6-dimethoxypyrimidin-2-ylka Vamoyl) -1-methyl-1H-pyrazole-5-sulfonamide, N- (4,6-dimethoxypyrimidin-2-ylcarbamoyl) -1,3-dimethyl-4- (5-methyl-5,6-dihydro -1,4,2-dioxazin-3-yl) -1H-pyrazol-5-sulfonamide and 4- (5,6-dihydro-1,4,2-dioxazin-3-yl) -N- (4, Sulfonylurea compounds such as 6-dimethoxypyrimidin-2-ylcarbamoyl) -1,3-dimethyl-1H-pyrazole-5-sulfonamide, bispyribac, pyrithiobac, pyriftalid, pyribenzoxim , Pyrimisulfan, pyriminobac-methyl, esprocarb, benthiocarb, molinate, dimepiperate, pyributicarb, mefenacet , Butachlor, pretilachlor, tenylchlor, bromobutide, etobenzanid, dymron, cumyluron, bentazone, salt of bentazone, 2,4-D, 2,4-D salt, 2,4-D ester, MCP, MCP salt, MCP ester, MCPB, MCPB salt, MCPB ester, phenothiol (MCPA-thioethyl), chromeprop, naproanilide (Naproanilide), oxadiazon, pyrazolate, pyrazoxifene, benzofenap, oxadiargyl, dimethametryn, simethrin, piperophos, anilophos ,pig Phos (butamifos), bensulide, dithiopyr, CNP, chlormethoxynil, cyhalofop butyl, bifenox, cafenstrole, pentoxazone, indanofan , Oxaziclomefone, fentrazamide, butenachlor, ACN, benzobicyclon, benfuresate, cimmethylin, simazine, dichlobenil, diuron Chloro IPC (chlorpropham), atrazine, alachlor, isouron, chlorphtalim, cyananadine, trifluralin, butami Butamifos, propyzamide, prometryn, pendimethalin, metolachlor, metribuzin, linuron, lenacil, propanil, MCPA, Ioxynil octanoate, asuram, quizalofop-ethyl, propaquizafop, quizalofop-tefuryl, sethoxydim, fenoxaprop-ethyl -ethyl), phenmedipham, fluazifop-butyl, bentazone, SAP (bensulide), TCTP (chlorthal-dimethyl, tetorachlorothiophene), amiprophosmethyl, amethrin ( ametryn), isoxaben, Ruben, orbencarb, tefuryltrione, karbutilate, dithiopyr, siduron, thiazafluron, napropamide, prodiamine, pyraclonil, bethrosin benefin, methyl dymron, 2,4-PA, MCPPA, imazaquin, imazapyr, tetrapion (flupropanate), tebuthiuron, bromacil, hexazinone, glyphosate ammonium Salt (glyphosate-ammonium), glyphosate-iso-propylammonium, glyphosate-trimesium, glyphosate-sodium, bialaphos, glufosi Over door (glufosinate-ammonium).

  Fungicide: acibenzolar, ampropyfos, anilazine, azaconazole, azoxystrobin, benalaxyl, benodanil, benomyl, Benzamacril, binapacryl, biphenyl, bitertanol, bethoxazine, bordeaux mixture, blasticidin-S, bromoconazole, buprimate (Bupirimate), buthiobate, calcium polysulfide, captafol, captan, copper oxychloride, carpropamid, carbendazim, calb Xin (carboxin), chinomethionat, clobenthiazone, chlorfenazol, chloroneb, chlorothalonil, clothalinil, cufraneb, simoxanil, cymoxanil Proconazole, cyprodinil, cyprofuram, debacarb, dichlorophen, dichlorobutrazol, diclhlofluanid, diclomedine, diclomedine, dicloran Diethofencarb, dicrocymet, difenoconazole, diflumetorim, dimethirimol, dimethomorph, diniconazole ( diniconazole), dinicoazole-M (diniconazole-M), dinocap, diphenylamine, dipyrithione, ditalimfos, dithianon, dodemorph, dodine, drazolonone ), Edifenphos, epoxiconazole, etaconazole, etirimol, etridiazole, famoxadone, fenarimol, febuconazole, fenam (fenam) , Fenpiclonil, fenpropidin, fenpropimorph, fentin, ferbam, ferimzone, fluazinam, fludioxo Fludioxonil, fluoroimide, fluquinconazole, flusilazole, flusulfamide, flutolanil, flutriafol, folpet, fosetyl-aluminum ( fosetyl-aluminium, fuberidazole, fluralaxyl, fenamidone, fenhexamid, guazatine, hexachlorobenzene, hexaconazole, hymexazol, Imazalil, imibenconazole, iminoctadine, ipconazole, iprobenfos, iprodione, isoprothiolane, Iprovalicarb, kasugamycin, kresoxim-methyl, mancopper, mancozeb, maneb, mepanipyrim, mepronil, metalaxyl, metalaxyl Metconazole, metiram, metinominostrobin, microbutanil, nabam, nickel bis (dimethyldithiocarbamate), nitrothal-isopropyl , Nuarimol, octhilinone, offurace, oxadixyl, oxycarboxin, oxpoconazole fumarate, pefurzoate, pen Penconazole, pencicuron, phthalide, piperalin, polyoxins, probenazole, prochloraz, procymidone, propamocarb hydrochloride, propamocarb hydrochloride, propicocarb hydrochloride Propiconazole, propineb, pyrazophos, pyrifenox, pyrimethanil, pyroquilon, quinoxyfen, quintozene, sulfur, spiroxamine ), Tebuconazole, tecnazene, tetraconazole, thiabendazole, thifluzamide, thiophanate-methyl, thiram ), Tolclofos-methyl, tolylfluanid, triadimefon, triadimenol, triazoxide, tricyclazole, triridemorph, triflumizole, triflumizole Triforine, triticonazole, validamycin, vinclozolin, zineb, ziram, oxine-copper.

  Bactericides: streptomycin, oxyterracycline, oxolinic acid.

  Nematicides: aldoxycarb, fosthiazate, fosthietan, oxamyl, fenamiphos.

  Acaricides: cyenopyrafen, acrylonitrile compounds such as cyfulmetofen, spiromesifen, spirodiclofen, pyridaben, amitraz, bromopropylate, Chinomethionat, chlorobezilate, clofentezine, cyhexatine, dicofol, dienochlor, etoxazole, fenazaquin, fenbutatin oxide oxide, fenpropathrin, fenproximate, halfenprox, hexythiazox, milbemectin, propargite ( propargite), pyrimidifen, tebufenpyrad.

  Insecticides: abamectin, acephate, acetamipirid, azinphos-methyl, bendiocarb, benfuracarb, bensultap, bifenthrin, prof ), Butocarboxim, carbaryl, carbfuran, carbofuran, carbosulfan, cartap, chlorfenapyr, chlorpyrifos, chlorfenvinphos, chlor Flufluron (chlorfluazuron), clothianidin (clothianidin), chromafenozide (chromafenozide), chlorpyrifos-methyl (chlorpyrifos-methyl), cyfluthrin (cyfluthrin), beta-cyfluthrin (beta-cyfluthrin) Methperin (cypermethrin), cyromazine, cyhalothrin, lambda-cyhalothrin, deltamethrin, diafenthiuron, diazinon, diacloden, diflubenzuron ), Dimethylvinphos, diofenolan, disulfoton, dimethoate, EPN, esfenvalerate, ethiofencarb, ethiprole, etofenprox, Etrimfos, fenitrothion, fenobucarb, phenoxy curve, fenpropathrin, fenvalerate, fiproni (Fipronil), flucythrinate, flufenoxuron, flufenprox, tau-fluvalinate, fonophos, formetanate, formothion ), Furathiocarb, halofenozide, hexaflumuron, hydramethylnon, imidacloprid, isofenphos, indoxacarb, isoprocarb, isoxathione isoxathion, lufenuron, malathion, metaldehyde, metamidophos, methidathion, methacrifos, metalcarb, methomyl yl), metoprene, methoxychlor, methoxyfenozide, monocrotophos, muscalure, nitenpyram, omethoate, oxydemeton-methyl, oxdemeton-methyl (Oxamyl), parathion, parathion-methyl, permethrin, phenthoate, phoxim, phorate, phosalone, phosmet, phosphamidone ( phosphamidon, pirimicarb, pirimiphos-methyl, profenofos, pymetrozine, pyraclofos, pyriproxyfen, rotenone, sulprofo (Sulprofos), silafluofen, spinosad, sulfotep, sulfotep, tebfenozide, teflubenzuron, teflubenzuron, tebuthorin, terbufos, tetrachlorovinphos (tetrachlorvinphos) ), Thiamethoxam, thiofanox, thiometon, tolfenpyrad, tralomethrin, trichlorfon, triazuron, triflumuron, bamidion, etc. can give. Of the above pesticidal active ingredients, sulfonylurea compounds are preferred.

The content of the pesticidal active ingredient in the aqueous suspension pesticide composition of the present invention is usually 0.001 to 50 parts by weight, more preferably 0.001 to 10 parts by weight, more preferably 100 parts by weight of the present composition. Preferably it is 0.001-5 weight part, More preferably, it is 0.001-3 weight part.
The aqueous suspension pesticide composition of the present invention can contain two or more different pesticidal active ingredients, and the ratio when mixing can be freely selected. In this case, a more excellent effect is shown. There is.

  Examples of the polyoxyalkylene styryl phenyl ether phosphate, polyoxyalkylene styryl phenyl ether sulfate and salts thereof used in the present invention include polyoxyethylene (mono, di or tri) styryl phenyl ether phosphate, polyoxyethylene ( Mono-, di- or tri) styryl phenyl ether polymer phosphate ester, polyoxyethylene polyoxypropylene (mono, di or tri) styryl phenyl ether phosphate ester, polyoxyethylene (mono, di or tri) styryl phenyl ether sulfate ester, Polyoxyethylene (mono, di or tri) styryl phenyl ether polymer sulfate, polyoxyethylene polyoxypropylene (mono, di or tri) styryl pheny Ether sulfates and their alkali metal (eg, lithium, sodium and potassium), alkaline earth metal (eg, calcium and magnesium), ammonium and various amines (eg, alkylamines, cycloalkylamines and alkanolamines) ) Salt and the like. The total content of polyoxyalkylene styryl phenyl ether phosphate ester, polyoxyalkylene styryl phenyl ether sulfate ester and salts thereof in the composition of the present invention can be selected as appropriate, and is generally 0. 10 parts by weight per 100 parts by weight of the composition of the present invention. The content is from 0 to 5 parts by weight, more preferably from 0.01 to 2 parts by weight, still more preferably from 0.01 to 1 part by weight.

Alkylbenzenesulfonic acid, formalin condensate of alkylbenzenesulfonic acid, naphthalenesulfonic acid, alkylnaphthalenesulfonic acid, formalin condensate of naphthalenesulfonic acid, formalin condensate of alkylnaphthalenesulfonic acid and salts thereof used in the present invention are alkyl. (e.g., _{C 8 to 12)} benzene sulfonic acid, alkyl (e.g., _{C 8 to 12)} formalin condensate of benzene sulfonic acid, formalin condensate of cresol sulfonic acid, naphthalene sulfonic acid, (mono or di) alkyl (e.g. _{C. 1 to 6)} naphthalene sulfonic acid, formalin condensate of naphthalenesulfonic acid, (mono or di) alkyl (e.g. C _{1 to 6)} formalin condensates of naphthalenesulfonic acid, and their alkali metal (e.g., lithium Sodium and potassium) salts, alkaline earth metal (e.g., calcium and magnesium) salts, ammonium salts and various amines (e.g., alkylamines, cycloalkylamines and alkanolamines) salts. Total content of alkylbenzenesulfonic acid, formalin condensate of alkylbenzenesulfonic acid, naphthalenesulfonic acid, alkylnaphthalenesulfonic acid, formalin condensate of naphthalenesulfonic acid, formalin condensate of alkylnaphthalenesulfonic acid and salts thereof in the composition of the present invention The amount can be appropriately selected and is usually from 0.01 to 5 parts by weight, more preferably from 0.01 to 2 parts by weight, still more preferably from 0.01 to 1 part by weight, based on 100 parts by weight of the composition of the present invention. .

Examples of the acetylene glycol and its polyoxyalkylene adduct used in the present invention include 2,4,7,9-tetramethyl-5-decyne-4,7-diol and its polyoxyalkylene adduct. The total content of acetylene glycol and its polyoxyalkylene adduct can be appropriately selected, and is usually from 0.01 to 5 parts by weight, more preferably from 0.01 to 2 parts by weight, based on 100 parts by weight of the composition of the present invention. More preferably, it is 0.01-1 weight part.
In the composition of the present invention, if necessary, polyoxyalkylene styryl phenyl ether phosphate ester, polyoxyalkylene styryl phenyl ether sulfate ester and salts thereof, alkylbenzene sulfonic acid, formalin condensate of alkylbenzene sulfonic acid, naphthalene sulfonic acid, alkyl Surfactants other than naphthalene sulfonic acid, formalin condensate of naphthalene sulfonic acid, formalin condensate of alkyl naphthalene sulfonic acid and salts thereof, and acetylene glycol and its polyoxyalkylene adduct may be added. Examples of these surfactants include the following (A), (B), (C), (D) and (E).
Examples of the surfactant used in the present invention include the following (A), (B), (C), (D) and (E).

(A) Nonionic surfactant:
(A-1) Polyethylene glycol type surfactant: For example, polyoxyethylene alkyl (for example, C _8-18 ) ether, ethylene oxide adduct of alkyl naphthol, polyoxyethylene (mono or di) alkyl (for example, C _8-12 ) ) Phenyl ether, polyoxyethylene (mono or di) alkyl (eg C _8-12 ) phenyl ether formalin condensate, 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 Le, polyoxyethylene (mono-, di- or tri-) styryl phenyl ether polymer, polyoxyethylene polyoxypropylene (mono-, di- or tri-) styryl phenyl ether, polyoxyethylene polyoxypropylene block polymers, alkyl (e.g. _{C. 8 to 18} ) Polyoxyethylene polyoxypropylene block polymer ether, alkyl (for example, _C8-12 ) phenyl polyoxyethylene polyoxypropylene block polymer ether, polyoxyethylene bisphenyl ether, polyoxyethylene resin acid ester, polyoxyethylene fatty acid ( For example, _C8-18 ) monoester, polyoxyethylene fatty acid (e.g. _C8-18 ) diester, polyoxyethylene sorbitan (mono, di or tri) fatty acid ( For example _{C 8 to 18)} esters, glycerol fatty acid ester ethylene oxide adducts, castor oil ethylene oxide adduct, hydrogenated castor oil ethylene oxide adduct, alkyl (e.g., _{C 8 to 18)} amine ethylene oxide adduct and a fatty acid (e.g. _{C 8 -18} ) Amidoethylene oxide adduct and the like.

(A-2) Polyhydric alcohol type surfactant: For example, glycerol fatty acid ester, polyglycerin fatty acid ester, pentaerythritol fatty acid ester, sorbitol fatty acid (eg C _8-18 ) ester, sorbitan (mono, di or tri) fatty acid ( For example, _C8-18 ) esters, sucrose fatty acid esters, polyhydric alcohol alkyl ethers, alkyl glycosides, alkyl polyglycosides and fatty acid alkanolamides.

  (A-3) Acetylene-based surfactant: For example, acetylene alcohol, and an ethylene oxide adduct of acetylene alcohol.

(B) Anionic surfactant:
(B-1) Carboxylic acid type surfactant: For example, polyacrylic acid, polymethacrylic acid, polymaleic acid, polymaleic anhydride, maleic acid or maleic anhydride and an olefin (such as isobutylene and diisobutylene) Polymer, Copolymer of acrylic acid and itaconic acid, Copolymer of methacrylic acid and itaconic acid, Copolymer of maleic acid or maleic anhydride and styrene, Copolymer of acrylic acid and methacrylic acid, Acrylic acid Copolymer of acrylic acid and methyl ester of acrylic acid, copolymer of acrylic acid and vinyl acetate, copolymer of acrylic acid and maleic acid or maleic anhydride, polyoxyethylene alkyl (eg C _8-18 ) ether acetic acid, N- methyl - fatty acids (e.g., _{C 8 to 18)} sarcosinates, resin acids and fatty acids (e.g. _{C. 8 to 8)} carboxylic acids such as, well as the salts carboxylic acid.

(B-2) Sulfate ester type surfactant: For example, alkyl (eg C _8-18 ) sulfate ester, polyoxyethylene alkyl (eg C _8-18 ) ether sulfate ester, polyoxyethylene (mono or di) alkyl ( For example, C _8-12 ) phenyl ether sulfate, polyoxyethylene (mono or di) alkyl (eg C _8-12 ) 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 polymer sulfate, polyoxyethylene polyoxypropylene block polymer sulfate ester Le, sulfated oil, fatty acid ester sulfuric, sulfate ester such as sulfated fatty acids and sulfated olefins, and salts thereof sulfate.

(B-3) Sulfonic acid type surfactant: For example, paraffin (for example, _C8-22 ) sulfonic acid, α-olefin (for example, _C8-16 ) sulfonic acid, dialkyl (for example, _C8-12 ) sulfosuccinic acid, lignin Formalin condensate of sulfonic acid, polyoxyethylene (mono or di) alkyl (eg C _8-12 ) phenyl ether sulfonic acid, polyoxyethylene alkyl (eg C _8-18 ) ether sulfosuccinic acid half ester, creosote oil sulfonic acid , alkyl (e.g., C _{8 to 12)} ether disulfonic acid, Igepon T (trade name), sulfonic acids such as a copolymer of polystyrene sulfonic acid and styrene sulfonic acid and methacrylic acid, and salts thereof sulfonic acid.

(B-4) Phosphate ester type surfactants: For example, alkyl (eg, C _8-12 ) phosphate ester, polyoxyethylene alkyl (eg, C _8-18 ) ether phosphate ester, polyoxyethylene (mono or di) alkyl ( For example, C _8-12 ) phenyl ether phosphate ester, polyoxyethylene (mono, di or tri) alkyl (eg C _8-12 ) phenyl ether polymer phosphate ester, polyoxyethylene (mono, di or tri) phenyl phenyl ether Phosphate esters, polyoxyethylene (mono, di or tri) benzylphenyl ether phosphate esters, phosphate esters of polyoxyethylene polyoxypropylene block polymers, phosphatidylcholines, phosphatidylethanolimines and condensed phosphoric acids (eg tripoly Phosphoric acid esters such as phosphoric acid and the like, and salts of these phosphoric acid esters.

  The counter ions of the salts in the above (B-1) to (B-4) include alkali metals (such as lithium, sodium and potassium), alkaline earth metals (such as calcium and magnesium), ammonium and various amines (eg, alkyl) Amine, cycloalkylamine and alkanolamine).

(C) Cationic surfactant:
For example, alkylamines, alkyl quaternary ammonium salts, ethylene oxide adducts of alkyl amines and ethylene oxide adducts of alkyl quaternary ammonium salts.

(D) Amphoteric surfactant:
(D-1) Betaine type surfactant: For example, alkyl (eg C _8-18 ) dimethylaminoacetic acid betaine, acyl (eg C _8-18 ) aminopropyldimethylaminoacetic acid betaine, alkyl (eg C _8-18 ) hydroxy Sulfobetaines and 2-alkyl (eg C _8-18 ) -N-carboxymethyl-N-hydroxyethylimidazolinium betaine (D-2) amino acid type surfactants: for example alkyl (eg C _8-18 ) Aminopropionic acid, alkyl (e.g. _C8-18 ) _{aminodipropionic} acid and N-acyl (e.g. _C8-18 ) -N'-carboxyethyl-N'-hydroxyethylethylenediamine.

(D-3) Amine oxide type surfactants: Examples include alkyl (for example, C _8-18 ) dimethylamine oxide and acyl (for example, C _8-18 ) aminopropyldimethylamine oxide.

(E) Other surfactants:
(E-1) Silicone surfactant: for example, polyoxyethylene / methylpolysiloxane copolymer, polyoxypropylene / methylpolysiloxane copolymer, and poly (oxyethylene / oxypropylene) / methylpolysiloxane copolymer Etc.
(E-2) Fluorosurfactant: For example, perfluoroalkenyl benzene sulfonate, perfluoroalkyl sulfonate, perfluoroalkyl carboxylate, perfluoroalkenyl polyoxyethylene ether, perfluoroalkyl polyoxyethylene ether And perfluoroalkyltrimethylammonium salt.

  The above surfactants can be used alone or in admixture of two or more, and the ratio in the case of mixing can also be freely selected. Although the total content of the surfactant in the composition of the present invention can be appropriately selected, it is preferably in the range of 0.1 to 20 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 thickeners, organic solvents, pH control agents, antifreeze agents, antifoaming agents, antibacterial and antifungal agents, colorants and salts, and include the following.

  The thickening agent is not particularly limited, and organic, inorganic natural products, synthetic products and semi-synthetic products can be used. For example, heteropolysaccharides such as xanthan gum (xanthan gum), welan gum and rhamzan gum, polyvinyl alcohol, polyvinyl Water-soluble polymer compounds such as pyrrolidone, polyacrylic acid, sodium polyacrylate and polyacrylamide, cellulose derivatives such as methylcellulose, carboxymethylcellulose, carboxyethylcellulose, hydroxyethylcellulose and hydroxypropylcellulose, montmorillonite, saponite, hectorite, bentonite and laponite And smectite clay minerals such as synthetic smectites. These thickeners may be used alone or in combination of two or more, and the ratio in the case of mixing can be freely selected. These thickeners may be added as they are, or those previously dispersed in water may be added. Moreover, content in this invention composition can also be selected freely.

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 control agent, 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. A pH can be controlled 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). Preferred salts are those of hydrochloric acid, sulfuric acid and phosphoric acid. The addition amount of the salt is desirably less than the water solubility of the salt, but is usually 0.1 to 30 parts by weight, preferably 1 to 20 parts by weight, more preferably 3 to 100 parts by weight of the composition of the present invention. 20 parts by weight.
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 adjuvants may be singly or mixed and finely pulverized by a dry type and wet type 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.

  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 the following Examples, Comparative Examples, and Reference Examples, one or more herbicidal active ingredients other than the herbicidal active ingredient used can be further contained. Such herbicidal active ingredients are not particularly limited, but those that have been conventionally used as pesticides for paddy fields include mefenacet, oxadiclomephone, benzobicyclone, cavenstrol, cyhalohop butyl, and dimlon. Is suitable.

[Example 1]
1. Preparation of pulverized slurry In 37.63 parts of water, 0.25 part of Soprofall 3D33 (trade name, manufactured by Rhodia, polyoxyethylene tristyrylphenyl ether phosphate), Suprasil MNS / 90 (trade name, manufactured by Rhodia) Sodium methyl naphthalene sulfonate formalin condensate) 0.25 parts, Surfynol 104PG50 (trade name, manufactured by Air Products, 50% propylene of 2,4,7,9-tetramethyl-5-decyne-4,7-diol Glycol solution) 0.25 parts, 1.0 part of anhydrous citric acid, 10.0 parts of propylene glycol, 0.2 part of a silicone-based antifoaming agent are dissolved, and 0.42 part of pyrazosulfuron ethyl is dispersed therein. .8-1.2mmφ glass beads were used for wet grinding with a sand grinder (manufactured by AIMEX Co., Ltd.) 50 parts of rally were obtained.

2. Preparation of dispersion medium: 49.3 parts of water, 0.2 parts of Kelzan ASX (trade name, manufactured by Kelco, xanthan gum), Proxel GXL (S) (trade name, manufactured by Avicia Co., Ltd., 1,2-benzisothiazoline-3 -On) 0.1 parts and Bee gum K (trade name, manufactured by Vanderbilt, aluminum magnesium silicate) 0.4 parts were dispersed in this order to obtain 50 parts of a dispersion medium.

3. Preparation of aqueous suspension pesticide composition 50 parts of the pulverized slurry and 50 parts of a dispersion medium were mixed to obtain 100 parts of a uniform aqueous suspension pesticide composition.

[Example 2]
1. Preparation of pulverized slurry In 35.1 parts of water, 1.0 part of Soprofall 3D33 (trade name, manufactured by Rhodia, polyoxyethylene tristyrylphenyl ether phosphate), Suprasil MNS / 90 (trade name, manufactured by Rhodia) Sodium methyl naphthalene sulfonate formalin condensate) 1.0 part, Surfynol 104E (trade name, manufactured by Air Products, 50% ethylene of 2,4,7,9-tetramethyl-5-decyne-4,7-diol Glycol solution) 0.25 part, Epan 450 (trade name, manufactured by Daiichi Kogyo Seiyaku Co., Ltd., polyoxyethylene polyoxypropylene block polymer) 0.25 part, anhydrous citric acid 1.0 part, ethylene glycol 10.0 Part, 0.2 part of a silicone-based antifoaming agent is dissolved, and 1.2 part of halosulfuron methyl is dispersed in this, 0.8- Wet grinding in a sand grinder (AIMEX Co., Ltd.) using a .2mmφ glass beads, to obtain a ground slurry 50 parts.

2. Preparation of dispersion medium Proxel GXL (S) (trade name, manufactured by Avicia Co., Ltd., 1,2-benzisothiazolin-3-one) 0.16 part in water (49.68 parts), K1A96 (trade name, manufactured by Kelco) Welan gum) 0.02 part and Kelzan ASX (trade name, manufactured by Kelco, xanthan gum) 0.14 part were dispersed in this order to obtain 50 parts of a dispersion medium.

3. Preparation of aqueous suspension pesticide composition 50 parts of the pulverized slurry and 50 parts of a dispersion medium were mixed to obtain 100 parts of a uniform aqueous suspension pesticide composition.

[Comparative Example 1]
An aqueous suspended agricultural chemical composition was obtained in the same manner as in Example 1 except that soprophor 3D33 was replaced with water.

[Comparative Example 2]
An aqueous suspension pesticide composition was obtained in the same manner as in Example 1 except that the souprazil MNS / 90 was replaced with water.

[Reference Example 1]
1. 51.87 parts of adjusted water of the pulverized slurry were mixed with 2.00 parts of Soprofall 3D33 (trade name, manufactured by Rhodia, polyoxyethylene tristyrylphenyl ether phosphate), Surfynol 104E (trade name, manufactured by Air Products, 2 , 4,7,9-tetramethyl-5-decyne-4,7-diol in 50% ethylene glycol solution), Epan 750 (trade name, manufactured by Daiichi Kogyo Seiyaku Co., Ltd., polyoxyethylene poly) Oxypropylene block polymer) 0.50 part, 0.90 part of anhydrous citric acid, 5.00 part of ethylene glycol, 0.20 part of silicone-based antifoaming agent, and 1.20 parts of halosulfuron methyl are dispersed therein. 0.8-1.2 mmφ glass beads were used for wet pulverization with a sand grinder (manufactured by Imex Co., Ltd.). It was obtained 2 parts.

2. Preparation of dispersion medium In 5.00 parts of water, 0.04 part of K1A96 (trade name, manufactured by Kelco, Welan Gum), Proxel GXL (S) (trade name, manufactured by Avicia Co., Ltd., 1,2-benzisothiazoline-3- ON) Dispersed in the order of 0.04 part to obtain 5.08 part of a dispersion medium.

3. Preparation of dimetamethrin solution Dimetamethrin 1.20 parts Vinicizer 20 (trade name, manufactured by Kao Corporation, diisotridecyl phthalate) 20.00 parts, Exepal M-OL (trade name, manufactured by Kao Corporation, methyl oleate) Dissolved in 12.00 parts of the mixture.

4). Preparation of Aqueous Suspension Pesticide Composition After mixing and stirring 61.72 parts of the above pulverized slurry and 5.08 parts of the dispersion medium, 33.20 parts of dimetamethrin solution was added and mixed to obtain a uniform aqueous suspension pesticide composition 100. Got a part.

[Test example]
The dispersibility in water of the compositions obtained in Examples 1 and 2 and Comparative Examples 1 and 2 was evaluated by the following method. 1 L of 1 L beaker with 10 degree hard water was added and left in a constant temperature room at 25 degrees. 200 μL of the aqueous suspension composition was gently dropped from the height of the edge of the beaker with a micropipette, and the water surface and the spread in water were visually observed and evaluated. The results are shown in Table 1.

○: Cloudy and less sediment at the bottom of the beaker.
(Triangle | delta): Although it becomes cloudy, there exists a sediment in a beaker bottom part.
X: It does not become cloudy and does not spread. There is much sediment at the bottom of the beaker.

Table 1 ――――――――――
Evaluation ――――――――――
Example 1
Example 2 ○
Comparative Example 1 ×
Comparative Example 2 ×
――――――――――

  The composition of the present invention can be used for controlling weeds.

Claims (3)

(1) one or more selected from pesticidal active ingredients and salts thereof, (2) one or more selected from acetylene glycol and its polyoxyalkylene adduct, (3) polyoxyalkylene styryl phenyl ether phosphate, poly One or more selected from oxyalkylene styryl phenyl ether sulfates and their salts, (4) alkylbenzenesulfonic acid, formalin condensate of alkylbenzenesulfonic acid, naphthalenesulfonic acid, alkylnaphthalenesulfonic acid, formalin condensate of naphthalenesulfonic acid, An aqueous suspended agricultural chemical composition for direct dripping of paddy fields, comprising at least one selected from formalin condensates of alkylnaphthalenesulfonic acid and salts thereof, and (5) a thickener .   The aqueous suspended agricultural chemical composition according to claim 1, wherein the agricultural chemical active ingredient is a sulfonylurea compound.   The aqueous suspension agricultural chemical composition according to claim 2, wherein the sulfonylurea compound is pyrazosulfuronethyl, halosulfuronmethyl or methazosulfuron.