JP4102977B2 - Granular wettable powder - Google Patents

Description

【００５３】
第１表のように、本発明の粒状水和剤は、比較例の粒状水和剤に比べて、水中での崩壊性と高濃度水希釈液の分散安定性が優れていた。
【００５４】
【発明の効果】
本発明の粒状水和剤は、農薬活性成分の種類にかかわらず水希釈時に良好な水中での崩壊性が得られ、また時間の経過にかかわらず水希釈液中の農薬活性成分微粒子が良好な分散安定性を示す。さらに、希釈水量が極めて少なくても、即ち水希釈液中の農薬活性成分の濃度が極めて高くても、良好な水中での崩壊性と分散安定性が得られる。[0001]
[Industrial application fields]
The present invention relates to a granular wettable powder excellent in disintegration and dispersion stability when diluted with water.
[0002]
[Prior art]
The granular wettable powder is a preparation that is diluted with water to prepare a suspension and sprayed. Among conventional agricultural chemical formulations, other formulations that are diluted with water and sprayed include emulsions, wettable powders and flowables. Since an emulsion uses an organic solvent as a carrier, it has problems such as toxicity, irritation, flammability and odor. On the other hand, since the wettable powder is a fine powder preparation, it is inconvenient to measure, and powdering at the time of preparation of the spray liquid becomes a problem. A flowable preparation is a preparation that eliminates the inconvenience of measuring wettable powder and the problem of powdering by making it into a suspension form, but it is a viscous liquid preparation that is difficult to remove from the container. Since it remains in the container, it may be difficult to dispose of the container.
[0003]
Therefore, attempts have been made in recent years to granulate the wettable powder in order to eliminate the drawbacks of the above-mentioned preparations. Granulating the wettable powder improves the wetability and metering difficulty of the wettable powder. In addition, there is no problem of difficulty in handling due to the high viscosity of the flowable agent. The granulated wettable powder (the granular wettable powder) as described above is rapidly disintegrated into fine particles by diluting with water and preparing a spray liquid, and the fine particles are submerged in water. It is important to disperse stably. This is because if the disintegration is poor, the undisintegrated particles can cause clogging of the nozzle of the sprayer, and if the dispersion stability is poor, the particles are aggregated and settled, resulting in non-uniform active ingredients in the spray liquid and stable control. The effect cannot be expected. Furthermore, it is because the sedimentation of the particles in the surface water is fast after spraying, the diffusibility of the active ingredient is deteriorated and a stable control effect cannot be expected.
[0004]
Various techniques relating to the granular wettable powder have been proposed so far. For example, there is a method of blending a high purity desulfolignin sulfonate (JP-A-8-34702).
[0005]
[Problems to be solved by the invention]
However, such a granular wettable powder according to the prior art cannot obtain good disintegration and dispersion stability when diluted with water depending on the type of the agrochemical active ingredient. The fine particles aggregated and separated, and were not always practical. Further, when the amount of diluted water is small, that is, when the concentration of the pesticidal active ingredient in the water diluted solution is high, the disintegration property and the dispersion stability at the time of water dilution are disadvantageous.
[0006]
[Means for Solving the Problems]
The present invention relates to the following [1] to [7].
[0007]
[1] A granular wettable powder containing the following (a) and (b).
(a) One or more agrochemical active ingredients
(b) Bisphenolsulfonic acid formalin condensate or alkali metal salt, alkaline earth metal salt, ammonium salt or amine salt thereof
[2] A granular wettable powder containing the following (a), (b) and (c).
(a) One or more agrochemical active ingredients
(b) Bisphenolsulfonic acid formalin condensate or alkali metal salt, alkaline earth metal salt, ammonium salt or amine salt thereof
(c) Sulfonic acid type surfactants other than (b)
[3] The granular wettable powder according to the above [1] or [2], wherein the content of (b) relative to the granular wettable powder is 1 to 30% by mass.
[0008]
[4] The granular wettable powder according to the above [2] or [3], wherein the content of (c) with respect to the granular wettable powder is 0.1 to 10% by mass.
[0009]
[5] The granular wettable powder according to the above [1] to [4], wherein the content of (a) with respect to the granular wettable powder is 1 to 90% by mass.
[0010]
[6] The granular wettable powder according to the above [1] to [5], wherein the granular wettable powder is a granular wettable powder for diluting water.
[0011]
[7] A method in which the granular wettable powder according to the above [1] to [5] is diluted with water and sprayed.
[0012]
The granular wettable powder of the present invention has good disintegration property in water when diluted with water regardless of the type of the pesticidal active ingredient, and fine pesticidal active ingredient fine particles in the water diluted solution are good regardless of the passage of time. Shows dispersion stability. Furthermore, even if the amount of diluted water is very small, that is, the concentration of the pesticidal active ingredient in the diluted water is very high, good disintegration and dispersion stability in water can be obtained.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Representative examples of the bisphenol sulfonic acid formalin condensate of the present invention or an alkali metal salt, alkaline earth metal salt, ammonium salt or amine salt thereof include Bisperz P-121, Bispers P-125 and Bispers P-215 ( Nippon Paper Industries Co., Ltd.).
[0014]
The content of the bisphenolsulfonic acid formalin condensate or the salt thereof in the granular wettable powder of the present invention is preferably 1 to 30% by mass, and the dispersion stability of the pesticidal active ingredient when diluted with an addition amount of 1% by mass or more is more In addition, the disintegration property in water becomes better with an addition amount of 30% by mass or less.
[0015]
Examples of the pesticidal active ingredient of the present invention include herbicides, insecticides, acaricides, nematicides, bactericides, fungicides, and the like. Although not particularly limited, typical examples thereof are listed below.
[0016]
Herbicides: pyrazosulfuron ethyl (generic name), halosulfuron methyl (generic name), bensulfuron methyl (generic name), imazosulfuron (generic name), azimsulfuron / Common name), Sinosulfuron (generic name), cyclosulfamuron (generic name), ethoxysulfuron (generic name), esprocarb (generic name), Beniocarb (benthiocarb / generic name), molinate (Molinate / generic name), dimepiperate (generic name), piributicarb (pyributicarb / generic name), mefenacet (generic name), butachlor (generic name), pretilachlor (generic name), tenylchlor (thenylchlor) / Generic name), Bromob Bromobutide (generic name) ettobenzanid (generic name), dimron (generic name), cumyluron (generic name), bentazone (bentazone), salt of bentazone, 2,4-D (general Name), 2,4-D salt, 2,4-D ester, MCP (generic name), MCP salt, MCP ester, MCPB (generic name), MCPB salt, MCPB ester, phenothiol ( MCPA-thioethyl (generic name), chromeprop (generic name), naproanilide (generic name), oxadiazon (generic name), pyrazolate (generic name), pyrazoxifene (generic name), benzofe Nap (benzofenap / generic name), oxadiargyl (generic name), dimethametryn (generic name), simethrin (simetryn / one) Common name), Piperophos (generic name), Anilofos (generic name), Butamifos (generic name), Bensulide (generic name), Dithiopyr (generic name), Pyriminobac (pyriminobac methyl / generic name, CNP (generic name), chlormethoxynil (generic name), cyhalofop butyl (generic name), bifenox (generic name), caffentrol (cafenstrole / generic name), pentoxazone ( pentoxazone (generic name), indanofan (generic name), oxadichrome mefone (oxaziclomefone / generic name), fentrazamide (generic name), butenachlor (generic name), ACN (generic name), benzobicyclon / Test name), benfresate (generic name), symmetrine (c immethylin (generic name), simazine (generic name), diclobenzyl (dichlobenil / generic name), diuron (generic name), chloro IPC (chlorpropham / generic name), atrazine (generic name), alachlor (Alachlor / generic name), isouron (isouron / generic name), chlorphthalim (chlorphtalim / generic name), cyananadine (cyanazin / generic name), trifluralin (generic name), butamifos (generic name), propyzamide (propyzamide) / Generic name), promethrin (prometryn / generic name), pendimethalin (generic name), metolachlor (metolachlor / generic name), metribuzin (generic name), linuron (generic name), renacil ( lenacil (generic name), propanil (generic name), MCPA (generic name), ioxynil octanoate (Generic name), ashram (asulam / generic name), quizalofop-ethyl (generic name), propaquiza hop (propaquizafop / generic name), quizalofop-tefuryl (generic name), cetoxydim (Sethoxydim / generic name), thifensulfuron-methyl / generic name, phenoxaprop-ethyl / generic name, phenmedipham / generic name, fluazifop-butyl butyl / generic name), bentazone (bentazone / generic name), SAP (bensulide / generic name), TCTP (chlorthal-dimethyl, tetorachlorothiophene / generic name), amiprophosmethyl (generic name), amethrin (ametryn / general name) Name), isoxaben (generic name), orthoben curve (orbencarb / generic name), carbylate (generic name), dichi Pill (dithiopyr / generic name), siduron (generic name), thiazafluron (generic name), napropamide (generic name), prodiamine (generic name), bethrosin (generic name), methyl Daimlon (methyl dymron / generic name), 2,4-PA (generic name), MCPPA (generic name), flazasulfuron (generic name), metsulfuron-methyl (generic name), imazaquin / Generic name), imazapyr (generic name), tetrapion (flupropanate / generic name), tebuthiuron (generic name), bromacil (generic name), hexazinone (generic name), glyphosate ammonium salt (glyphosate -ammonium / generic name), glyphosate isopropylamine salt (glyphosate-iso-propylammonium / generic name), glyphosate Phosato-trimesium salt (glyphosate-trimesium / generic name), glyphosate sodium salt (glyphosate-sodium / generic name), bialaphos (general name), glufosinate-ammonium / generic name, MCC (generic name), etc. Is mentioned.
[0017]
Bactericides: acibenzolar (generic name), ampropylphos (ampropyfos / generic name), anilazine (generic name), azaconazole (azaconazole / generic name), azoxystrobin (generic name), Benalaxyl (benalaxyl / generic name), benodanyl (generic name), benomyl (generic name), benzamacril (generic name), binaacryl (binapacryl / generic name), biphenyl (biphenyl / generic name), biteltanol ( bitertanol (generic name), bethoxazine (generic name), Bordeaux liquid (bordeaux mixture / generic name), blasticidin-S (blasticidin-S / generic name), bromoconazole (generic name), bupirimate / Generic name), buthiobate (generic name), calcium polysulfide / general ), Captafol (captafol / generic name), captan (captan / generic name), copper oxychloride (generic name), carpropamid (generic name), carbendazim (generic name), carboxin (Carboxin / generic name), quinomethionat (generic name), clobenthiazone (generic name), chlorfenazol (generic name), chloroneb (generic name), chlorothalonil (generic name) , Clozolinate (chlozolinate / generic name), Cufraneb (cufraneb / generic name), Simoxanil (cymoxanil / generic name), Cyproconazole (cyproconazol / generic name), Cyprodinil (cyprodinil / generic name) , Debacarb (generic name), dichlorophen (general) ), Diclobutrazol (generic name), Diclofuranide (diclhlofluanid / generic name), Diclomedine (diclomedine / generic name), Dichloran (dicloran / generic name), Dietofencarb (generic name), Diclocymet (generic name) Name), difenoconazole (difenoconazole / generic name), diflumetorin (generic name), dimethirimol (generic name), dimethomorph (generic name), diniconazole (generic name), dinicoazole-M (diniconazole-M) / Generic name), dinocap (generic name), diphenylamine (generic name), dipyrithione (generic name), ditalimfos (general name), dithianon (generic name), dodemorph (general name) Name), Dodine (generic name), Dora Xoron (drazoxolon / generic name), edefenophos (generic name), epoxiconazole (generic name), etaconazole (generic name), ethirimol (generic name), etridiazole (generic name), Famoxadone (generic name), fenarimol (generic name), febuconazole (generic name), fenfuram (generic name), fenpiclonil (generic name), fenpropidin (generic name) ), Fenpropimorph (generic name), fentin (generic name), felvan (ferbam / generic name), ferrimzone (ferimzone / generic name), fluazinam (generic name), fludioxonil (generic name) ), Fluoroimide (generic name), fluquinconazo Fluquinconazole (generic name), flusilazole (general name), flusulfamide (generic name), flutolanil (general name), flutriafol (generic name), folpet (generic name) , Fosetyl-aluminium (generic name), fuberidazole (generic name), flaraxyl (general name), fenamidone (generic name), fenhexamid (generic name), guazatine / Generic name), hexachlorobenzene (generic name), hexaconazole (generic name), hymexazol (generic name), imazalil (generic name), imibenconazole (generic name), Iminoctadine (generic name), ipconazole Common name), iprobenfos (generic name), iprodione (generic name), isoprothiolane (generic name), iprobalibalb (generic name), kasugamycin (generic name), cresoxim-methyl (kresoxim- methyl / common name), mancopper (mancopper / generic name), manzeb (generic name), manneb (maneb / generic name), mepanipyrim (generic name), mepronil (generic name), metalaxyl / Generic name), metconazole (generic name), metyram (metiram / generic name), metminostrobin (generic name), microbutanil (generic name), nabam (generic name), nickel bis ( Dimethyldithiocarbamate (nickel bis (dimethyldithiocarbamate) / generic name), Nitroter -Isopropyl (nitrothal-isopropyl / generic name), nuarimol (generic name), octhilinone (generic name), off-race (ofurace / generic name), oxadixyl (generic name), oxycarboxin / (Generic name), oxpoconazole fumarate (generic name), pefurzoate (generic name), penconazole (generic name), pencyclon (general name), phthalide (generic name), Piperalin (generic name), polyoxins (generic name), probenazole (generic name), prochloraz (generic name), procymidone (generic name), propamocarb hydrochloride (generic name) , Propiconazole (propiconazole / generic name), propineb / propineb / (Generic name), pyrazophos (generic name), pyrifenox (generic name), pyrimethanil (generic name), pyroquilon (generic name), quinoxyfen (generic name), quintozene / (Generic name), sulfur, spiroxamine (generic name), tebuconazole (generic name), technazene (generic name), tetraconazole (general name), thiabendazole (generic name) , Thifluzamide (generic name), thiophanate-methyl (generic name), thylum (thiram / generic name), tolclofos-methyl (generic name), tolylfluanid (generic name), triazimephone (Triadimefon / generic name), triadimenol / generic name, tria Toxide (generic name), tricyclazole (generic name), tridemorph (generic name), triflumizole (generic name), triforine (generic name), triticonazole (generic name) ), Validamycin (generic name), vinclozolin (generic name), zineb (generic name), ziram (generic name) and oxine-copper (generic name).
[0018]
Bactericides: Streptomycin (generic name), oxytetracycline (generic name), oxolinic acid (generic name), and the like.
[0019]
Nematicides: Aldoxycarb (aldoxycarb / generic name), fosthiazate (generic name), fosthietan (generic name), oxamyl (generic name), and fenamiphos (generic name) .
[0020]
Acaricide: amitraz (generic name), bromopropylate (generic name), chinomethionat (generic name), chlorobezilate (generic name), clofentezine (generic name), Cyhexatine (generic name), dicofol (generic name), dienochlor (dienochlor), etoxazole (generic name), phenazaquin (generic name), fenbutatin oxide (generic name) ), Fenpropathrin (generic name), fenproximate (generic name), halfenprox (generic name), hexythiazox (generic name), milbemectin (generic name) , Propargite (generic name), pyridaben (one Common name), pyrimidifen (generic name), tebufenpyrad (generic name), and the like.
[0021]
Insecticides: abamectin (generic name), acephate (generic name), acetamipirid (generic name), azinphos-methyl (generic name), bendiocarb (generic name), benfuracarb (benfuracarb) / Generic name), bensultap (generic name), bifenthrin (generic name), buprofezin (generic name), butcarboxin (generic name), carbaryl (generic name), carbofuran (carbofuran) / Generic name), carbosulfan (generic name), cartap (general name), chlorfenapyr (generic name), chlorpyrifos (generic name), chlorfenvinphos (generic name), Chlorfluazuron (generic name), clothianidin (cloth ianidin (generic name), chromafenozide (generic name), clopyrifos-methyl (generic name), cyfluthrin (generic name), beta-cyfluthrin (generic name), cypermethrin (cypermethrin) / Generic name), cyromazine (generic name), cyhalothrin (generic name), lambda-cyhalothrin (generic name), deltamethrin (generic name), diafenthiuron (generic name) ), Diazinon (generic name), diacloden (diacloden / generic name), diflubenzuron (generic name), dimethylvinphos (generic name), diofenolan (generic name), disulfoton (generic name) ), Dimethoate (generic name), EPN, esfenvalere Esfenvalerate (generic name), etiofencarb (generic name), ethiprole (generic name), etofenprox (generic name), etrimfos (generic name), fenitrothion (generic name), Fenobucarb (fenobucarb / generic name), phenoxy curve (fenoxycarb / generic name), fenpropathrin (fenpropathrin / generic name), fenvalerate (generic name), fipronil (generic name), flucythrinate / (Generic name), flufenoxuron (generic name), flufenprox (generic name), tau-fluvalinate (generic name), fonophos (generic name), formethanate (formetanate) / Generic name), formothion (generic name), furathiocar (Furathiocarb / generic name), halofenozide / generic name, hexaflumuron / generic name, hydramethylnon / generic name, imidacloprid / generic name, isofenphos / generic name , Indoxacarb (generic name), isoprocarb (common name), isoxathion (generic name), lufenuron (generic name), malathion (generic name), metaldehydride (metaldehyde / generic name) , Methamidophos (generic name), methidathion (generic name), methacrifos (generic name), metalcarb (general name), mesomil (generic name), methoprene (generic name), methoxy Chlor (methoxychlor / generic name), methoxyphenozide (methoxy) fenozide (generic name), monocrotophos (generic name), muscarure (generic name), nitenpyram (genenpyram / generic name), ometoate (generic name), oxydemeton-methyl (generic name) , Oxamyl (generic name), parathion (generic name), parathion-methyl (common name), permethrin (generic name), phentoate (generic name), phoxim (general name) Name), phorate (generic name), hosalon (phosalone / generic name), phosmet (generic name), phosphamidon (generic name), pirimicarb (generic name), pirimiphos-methyl (pirimiphos-methyl) / Generic name), profenofos (profenofos / generic name), pymetrozine (pymetrozine / generic name), pyracro (Pyraclofos / generic name), pyriproxyfen (generic name), rotenone (rotenone / generic name), sulprofos (generic name), silafluofen (generic name), spinosad (generic name), Sulfotep (generic name), tebufenozide (generic name), teflubenzuron (generic name), tefluthorin (generic name), terbufos (generic name), terbufos (generic name), tetrachlorvinphos (generic name) Thiodicarb (generic name), thiamethoxam (generic name), thiofanox (generic name), thiometon (generic name), tolfenpyrad (generic name), tralomethrin (generic name) , Trichlorfon (generic name), triazuron Common name), triflumuron (triflumuron / generic name) and vamidothion (vamidothion / generic name) and the like.
[0022]
1-90 mass% is preferable, and, as for the content rate of the agrochemical active ingredient with respect to the granular wettable powder of this invention, More preferably, it is 1-60 mass%.
[0023]
In the granular wettable powder of the present invention, a sulfonic acid type surfactant other than a bisphenolsulfonic acid formalin condensate or a salt thereof can be used in order to further improve the disintegration property and dispersion stability in water. Examples of the sulfonic acid type surfactant include paraffin (C _12-22 ) Sulfonic acid, alkyl (C _8-12 ) Benzenesulfonic acid, alkyl (C _8-12 ) Formalin condensate of benzene sulfonic acid, 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 aryl ether hydroxy sulfonic acid, polyoxyethylene alkyl (C _12-18 ) Ether sulfosuccinic acid half ester, naphthalene sulfonic acid, (mono or di) alkyl (C _1-6 ) Naphthalenesulfonic acid, formalin condensate of naphthalenesulfonic acid, (mono or di) alkyl (C _1-6 ) Formalin condensate of naphthalene sulfonic acid, formalin condensate of creosote oil sulfonic acid, alkyl (C _8-12 ) Diphenyl ether disulfonic acid, Igepon T (trade name), polystyrene sulfonic acid, sulfonic acid such as copolymer of styrene sulfonic acid and methacrylic acid, and alkali metal salts, alkaline earth metal salts, ammonium salts and amine salts thereof Etc. Among these, polyoxyethylene alkylaryl ether hydroxysulfonic acid or a salt thereof is preferable. The polyoxyethylene alkylaryl ether hydroxysulfonic acid is represented by the formula (1):
R-O (C ₂ H ₄ O) _n -(1)
[In the formula, R represents an aryl group substituted with one or more alkyl groups (the aryl group represents a phenyl group or a naphthyl group), and n represents an integer of 2 to 40. ] The alkyl sulfonic acid substituted by the polyoxyethylene alkyl aryl ether group represented by these, and OH group. As a typical example of polyoxyethylene alkylaryl ether hydroxysulfonic acid or a salt thereof, Newkalgen PG-170 (Takemoto Yushi Co., Ltd.) can be mentioned.
[0024]
The content of the sulfonic acid type surfactant other than the bisphenol sulfonic acid formalin condensate or its salt is preferably 0.1 to 10% by mass, more preferably 0.5 to 5% by mass with respect to the granular wettable powder of the present invention. It is. When the addition amount is 0.1% by mass or more, the hydration property on the water surface when diluted with water becomes better, and when the addition amount is 10% by mass or less, the disintegration property in water when diluted with water becomes better.
[0025]
The granular wettable powder of the present invention may further contain other surfactant as required. Examples of other surfactants include the following (A), (B), (C), (D), and (E).
[0026]
(A) Nonionic surfactant:
(A-1) Polyethylene glycol type surfactant: For example, polyoxyethylene alkyl (C _12-18 ) Ether, alkyl naphthol ethylene oxide adduct, polyoxyethylene (mono or di) alkyl (C _8-12 ) Phenyl ether, polyoxyethylene (mono or di) alkyl (C _8-12 ) Formalin condensate of 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, polyoxyethylene (mono, di or tri) styryl phenyl ether polymer, polyoxyethylene polyoxypropylene Block polymer, alkyl (C _12-18 ) Polyoxyethylene polyoxypropylene block polymer ether, alkyl (C _8-12 ) Phenyl polyoxyethylene 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 _12-18 ) Ester, glycerol fatty acid ester ethylene oxide adduct, castor oil ethylene oxide adduct, hydrogenated castor oil ethylene oxide adduct, alkyl (C _12-18 ) Amine ethylene oxide adducts and fatty acids (C _12-18 ) Amidoethylene oxide adduct and the like.
[0027]
(A-2) Polyhydric alcohol type surfactant: For example, glycerol fatty acid ester, polyglycerol fatty acid ester, pentaerythritol fatty acid ester, sorbitol fatty acid (C _12-18 ) Esters, sorbitan fatty acids (C _12-18 ) Esters, sucrose fatty acid esters, polyhydric alcohol alkyl ethers and fatty acid alkanolamides.
[0028]
(A-3) Acetylene-based surfactant: Examples thereof include acetylene glycol, acetylene alcohol, ethylene oxide adduct of acetylene glycol, and ethylene oxide adduct of acetylene alcohol.
[0029]
(A-4) Other surfactants: Examples include alkyl glycosides.
[0030]
(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, Copolymer of methacrylic acid and itaconic acid, Copolymer of maleic acid and styrene, Copolymer of acrylic acid and methacrylic acid, Copolymer of acrylic acid and acrylic acid methyl ester, Acrylic acid And vinyl acetate, acrylic acid and maleic acid copolymer, N-methyl-fatty acid (C _12-18 ) Sarcosinates, resin acids and fatty acids (C _12-18 ), And salts of these carboxylic acids.
[0031]
(B-2) Sulfate type surfactant: For example, alkyl (C _12-18 ) Sulfate ester, polyoxyethylene alkyl (C _12-18 ) Ether sulfate, polyoxyethylene (mono or di) alkyl (C _8-12 ) Phenyl ether sulfate, polyoxyethylene (mono or di) alkyl (C _8-12 ) Phenyl ether polymer sulfate ester, polyoxyethylene (mono, di or tri) phenyl phenyl ether sulfate ester, polyoxyethylene (mono, di or tri) benzyl phenyl ether sulfate ester, polyoxyethylene (mono, di or tri) ) Styryl phenyl ether sulfate ester, polyoxyethylene (mono, di or tri) styryl phenyl ether polymer sulfate ester, polyoxyethylene polyoxypropylene block polymer sulfate ester, sulfated oil, sulfated fatty acid ester, sulfated fatty acid And sulfates such as sulfated olefins, and salts of these sulfates.
[0032]
(B-3) Phosphate ester type surfactant: For example, alkyl (C _8-12 ) Phosphate ester, polyoxyethylene alkyl (C _12-18 ) Ether phosphate, polyoxyethylene (mono or di) alkyl (C _8-12 ) Phenyl ether phosphate, polyoxyethylene (mono, di or tri) alkyl (C _8-12 ) Phenyl ether polymer phosphate ester, polyoxyethylene (mono, di or tri) phenyl phenyl ether phosphate ester, polyoxyethylene (mono, di or tri) benzyl phenyl ether phosphate ester, polyoxyethylene (mono, di or tri) ) Styryl phenyl ether phosphate, polyoxyethylene (mono, di or tri) styryl phenyl ether polymer phosphate, polyoxyethylene polyoxypropylene block polymer phosphate, phosphatidylcholine, phosphatidylethanolimine and condensed phosphates (eg tripolyphosphate) And the like, and salts of these phosphate esters.
[0033]
Examples of the salt in the above (B-1) to (B-3) include alkali metals (lithium, sodium and potassium, etc.), alkaline earth metals (calcium and magnesium, etc.), ammonium and various amines (eg, alkylamine, cyclohexane). Alkylamine and alkanolamine).
[0034]
(C) Cationic surfactant:
Examples thereof include alkylamine salts and alkyl quaternary ammonium salts.
[0035]
(D) Amphoteric surfactant:
Examples thereof include betaine type surfactants and amino acid type surfactants.
[0036]
(E) Other surfactants:
For example, silicone surfactants and fluorine surfactants can be used.
[0037]
The granular wettable powder of the present invention can contain a mineral powder or a water-soluble powder as an extender if necessary. As the mineral powder, diatomaceous earth, talc, clay, bentonite, calcium carbonate and the like are used. As the water-soluble powder, saccharides, urea, various salts, and the like are used. Examples of the saccharide include lactose, fructose, and glucose, and examples of the salts include sulfuric acid, phosphoric acid, hydrochloric acid, nitric acid, or alkali metal salts and ammonium salts of carbonic acid. These extenders may be used alone or in combination of two or more.
[0038]
In addition, as necessary, other additives such as binders, grinding aids (eg white carbon, diatomaceous earth, fatty acids, phosphate esters), absorbents, decomposition inhibitors, colorants or antifoaming agents are added. May be.
[0039]
The granular wettable powder of the present invention is produced by the following method. That is, as the first production method, (a) and (b) are added to (c), if necessary, other surfactants, extenders and other adjuvants, and mixed uniformly. Finely pulverize. The fine pulverization can be performed by a dry pulverizer such as an impact pulverizer, a ball mill and a jet ohmizer. Next, if necessary, the resulting fine powder is further mixed with (b), (c), other surfactants, extenders and other auxiliary agents, and after kneading by adding an appropriate amount of water, Granulate using a granulator and dry to obtain the desired product. Granulation can be performed by a granulator such as an extrusion granulator, a pressure granulator, a fluidized bed granulator, a stirring granulator, or a rolling granulator.
[0040]
In addition, as a second production method, (a) and (b) are added to an appropriate amount of water, and (c), other surfactants, extenders and other auxiliary agents are further added as necessary. And finely pulverize with a wet pulverizer. The fine pulverization can be performed by a wet pulverizer such as a ball mill and a sand grinder. Next, the obtained aqueous suspension is further mixed with an appropriate amount of (b), (c), other surfactants, extenders and other adjuvants as necessary, and this is mixed with a spray dryer. The desired product can be obtained by spray drying.
[0041]
As a third production method, (a) and (b) are added to an appropriate amount of water, and (c), if necessary, other surfactants, extenders and other auxiliary agents are further added. Finely pulverize with a wet pulverizer. The fine pulverization can be performed by a wet pulverizer such as a ball mill and a sand grinder. Next, a bulking agent is added to the resulting aqueous suspension, and if necessary, (b), (c), other surfactants and other adjuvants are added in an appropriate amount, mixed, kneaded to form a paste. Then, it is granulated using a granulator and dried to obtain the desired product. The granulation can be performed by a granulator such as an extrusion granulator, a pressure granulator, a fluidized bed granulator, a stirring granulator, a rolling granulator or the like.
[0042]
Although the particle size of the granular wettable powder of the present invention is not particularly limited, it is usually preferably about 0.1-2 mm.
[0043]
【Example】
Next, although the example of the present invention is concretely given and explained, the present invention is not limited only to these examples. In addition, all the parts indicate mass parts.
[0044]
[Example 1] 54 parts of pyridaben (generic name), sodium salt of bisphenolsulfonic acid condensate: 25 parts of Bisperz P-121 (manufactured by Nippon Paper Industries Co., Ltd.) and 19 parts of ammonium sulfate are finely pulverized with a jet ohmizer (manufactured by Seishin Enterprise). did. 98 parts of this finely pulverized product, polyoxyethylene alkylaryl ether hydroxysulfonic acid sodium salt: 2 parts of Newkalgen PG-170 (manufactured by Takemoto Yushi Co., Ltd.) and 40 parts of water were added and mixed. Granulation was carried out using an extrusion granulator equipped with. After drying at 50 ° C., the granulated wettable powder of the present invention was obtained by sizing with a 20-50 mesh sieve.
[0045]
[Example 2] 54 parts of quizalofopbutyl (generic name), sodium salt of bisphenolsulfonic acid condensate: 20 parts of Bisperz P-121 (manufactured by Nippon Paper Industries Co., Ltd.) and 24 parts of ammonium sulfate are jet ohmizer (manufactured by Seishin Enterprise) And then pulverized. 98 parts of the finely pulverized product, 2 parts of polyoxyethylene alkylaryl ether hydroxysulfonic acid sodium salt: 2 parts of Newkalgen PG-170 (manufactured by Takemoto Yushi Co., Ltd.) and 35 parts of water were added and mixed. Granulation was carried out using an extrusion granulator equipped with. After drying at 50 ° C., the granulated wettable powder of the present invention was obtained by sizing with a 20-50 mesh sieve.
[0046]
[Example 3] 53 parts of pyrazosulfuron ethyl (generic name), sodium salt of bisphenolsulfonic acid condensate: 7 parts of Bispazu P-121 (manufactured by Nippon Paper Industries Co., Ltd.), sodium salt of lignin sulfonate: Pearl Rex NP (Nippon Paper Industries) 7 parts), 20 parts of ammonium sulfate, and 11 parts of clay were finely pulverized with a jet ohmizer (manufactured by Seishin Enterprise). 98 parts of this finely pulverized product, 2 parts of polyoxyethylene alkylaryl ether hydroxysulfonic acid sodium salt: Neukalgen PG-170 (manufactured by Takemoto Yushi Co., Ltd.) and 15 parts of water were added and mixed. Granulation was carried out using an extrusion granulator equipped with. After drying at 50 ° C., the granulated wettable powder of the present invention was obtained by sizing with a 20-50 mesh sieve.
[0047]
Comparative Example 1 Granular hydration was carried out in the same manner as in Example 1 except that 25 parts of phenolsulfonic acid formalin condensate sodium salt was used instead of 25 parts of sodium salt of bisphenolsulfonic acid condensate in Example 1. An agent was obtained.
[0048]
Comparative Example 2 A granular wettable powder was obtained in the same manner as in Example 1 except that 40 parts of bisphenolsulfonic acid condensate sodium salt and 4.5 parts of ammonium sulfate were used.
[0049]
The preparations obtained from Examples and Comparative Examples were subjected to an underwater disintegration test and a dispersion stability test by the following methods.
[0050]
[Test Example 1] Underwater disintegration test
60 g of each of the granular wettable powders produced in Examples and Comparative Examples was weighed. The weighed sample was placed in a 500 ml stoppered graduated cylinder containing 460 ml of 10 degree hard water placed in a constant temperature water bath at 10 ° C., allowed to stand for 3 minutes, and then inverted at a rate of 1 inversion every 2 seconds. The graduated cylinder was reversed. This water-diluted solution (suspension) is passed through a 106 μm sieve and the undissolved state is visually observed. The one that is completely disintegrated without any grain shape is left as a grain shape on the sieve. Is indicated by ×. The results are shown in Table 1.
[0051]
[Test Example 2] Dispersion stability test of high-concentration water dilution (suspension)
1.0 g of each of the granular wettable powders produced in Examples and Comparative Examples was weighed. The weighed sample is put into a 10 ml stoppered measuring cylinder containing 10 ml of 10 degree hard water placed in a constant temperature water bath at 10 ° C., and diluted with water by inverting the measuring cylinder 30 times at a rate of 1 inversion every 2 seconds. A liquid (suspension) was prepared. The separation layer on the water surface after 2 hours of this water dilution and the amount of sediment in the water dilution were read from the memory of the graduated cylinder. The results are shown in Table 1.
[0052]
[Table 1]

[0053]
As shown in Table 1, the granular wettable powder of the present invention was superior in the disintegration property in water and the dispersion stability of the high-concentration water diluted solution as compared with the granular wettable powder of the comparative example.
[0054]
【The invention's effect】
The granular wettable powder of the present invention has good disintegration property in water when diluted with water regardless of the type of the pesticidal active ingredient, and fine pesticidal active ingredient fine particles in the water diluted solution are good regardless of the passage of time. Shows dispersion stability. Furthermore, even if the amount of diluted water is very small, that is, the concentration of the pesticidal active ingredient in the diluted water is very high, good disintegration and dispersion stability in water can be obtained.

Claims (7)

A granular wettable powder containing the following (a) and (b).
(a) One or more agrochemical active ingredients
(b) Bisphenolsulfonic acid formalin condensate or alkali metal salt, alkaline earth metal salt, ammonium salt or amine salt thereof A granular wettable powder containing the following (a), (b) and (c).
(a) One or more agrochemical active ingredients
(b) Bisphenolsulfonic acid formalin condensate or alkali metal salt, alkaline earth metal salt, ammonium salt or amine salt thereof
(c) Sulfonic acid type surfactants other than (b) The granular wettable powder according to claim 1 or 2, wherein the content of (b) with respect to the granular wettable powder is 1 to 30% by mass. The granular wettable powder according to claim 2 or 3, wherein the content of (c) with respect to the granular wettable powder is 0.1 to 10% by mass. 5. The granular wettable powder according to claim 1, wherein the content of (a) with respect to the granular wettable powder is 1 to 90% by mass. The granular wettable powder according to any one of claims 1 to 5, wherein the granular wettable powder is a granular wettable powder for diluting water. A method for diluting and dispersing the granular wettable powder according to claim 1 with water.