WO2007069461A1 - マイクロカプセル化された農薬 - Google Patents
マイクロカプセル化された農薬 Download PDFInfo
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- WO2007069461A1 WO2007069461A1 PCT/JP2006/323883 JP2006323883W WO2007069461A1 WO 2007069461 A1 WO2007069461 A1 WO 2007069461A1 JP 2006323883 W JP2006323883 W JP 2006323883W WO 2007069461 A1 WO2007069461 A1 WO 2007069461A1
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- Prior art keywords
- resin
- compound
- microcapsule
- formula
- solid
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Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/02—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing liquids as carriers, diluents or solvents
- A01N25/04—Dispersions, emulsions, suspoemulsions, suspension concentrates or gels
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/26—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests in coated particulate form
- A01N25/28—Microcapsules or nanocapsules
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/34—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom
- A01N43/36—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom five-membered rings
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/34—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom
- A01N43/40—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom six-membered rings
Definitions
- the present invention relates to microcapsules of pesticidal compounds.
- micro force psel formulations are known as sustained release formulations of agricultural chemical compounds.
- Several methods are known for microencapsulating pesticide compounds.
- the interfacial polymerization method is easy to control the film thickness of the microphone mouthpiece, and adjusts the sustained release performance of the pesticide compound as appropriate. Since it is easy, it is preferably used.
- the microencapsulation by the interfacial polymerization method is disclosed in, for example, Japanese Patent Application Laid-Open Nos. 5-2010 814 and 8-99805.
- the present invention provides a method for producing a microphone mouthpiece containing a pesticide compound and a microphone mouthpiece that can be applied to a pesticide compound having high water solubility.
- the solid agricultural chemical compound is represented by the formula (I)
- a microphone mouth capsule in which droplets suspended in a fatty acid ester represented by formula (I) are coated with a resin, and (a) a solid agrochemical compound is pulverized and suspended in the fatty acid ester represented by the formula (I) above And (b) preparing a droplet by mixing the obtained suspension and water, and (c) providing a method for producing a microphone mouthpiece that forms a resin film around the droplet.
- the solid agrochemical compound in the present invention is usually a compound having an agrochemical activity with a melting point of 15 ° C. or higher, preferably a melting point of 50 ° C. or higher, and has a solubility in the fatty acid ester represented by the above formula (I).
- Compounds with 5 wt ⁇ 1 ⁇ 2 or less are preferred.
- solid agricultural chemical compounds examples include insecticidal compounds, fungicidal compounds, herbicidal compounds, insect growth control compounds, plant growth regulating compounds, insect repellent compounds, and the like. Can be mentioned.
- Insecticidal compounds include carbamate compounds such as propoxy, isoprocalp, xylylcalp, metol calp, XMC, force valil, pirimicarb, carbofuran, mesomil, phenoxycarp, aranicarp, methoxadiazone; Trichlorfone, Monocrotofos, Tetracucuol Rubinphos, Dimethylvinfos, Hosalon, Chlorpyrifos, Chlorpyrifosmethyl, Pyridafenthion, Quinarfos, Methidathion, Metamidhos, Dimethoate, Fermothion, Azinphosethyl, Azinphosmethyl, Salicyline Neonicotinoide compounds such as cadmium, nitenbilam, acetamiprid, clothianidin and thiamethoxam 4 _ black mouth _ 2— (2— black mouth 1 2-methylpropyl) _ 5— (6— iod
- Bactericidal compounds include benzimidazole compounds such as benomyl, carbendazim, thiabendazole, and thiophanate methyl; Dicarboximid compounds such as procymidone, diplodione and vinclozoline; azole compounds such as diniconazole, propenazole, epoxyconazole, ⁇ buconazole, diphenoconazol, cyproconazol, flusilazole, triazimephone, etc .; : Carboxamide compounds such as flame ⁇ pill, mepronil, flutolanil, trifluzamide; Organophosphorus compounds such as trifluoroacemethyl, fosetyl aluminum, pyrazophos, etc .; Cyanopyrol compounds such as chlorothalonil, manzeb, caputane, phorpet, tricyclazole , Pyroxylone, Probenazol, Fusalide, Simoxanyl, Dimethomorph, Famoxadone,
- Herbicidal compounds include: triazine compounds such as atrazine and melibridine; urea compounds such as fluomeron and isoproturon; hydroxybenzonitrile compounds such as promoxinyl and ioxinyl; 2,6-dinitroaniline such as pendimesalin and trifluralin Compound; 2,4-D, dicampa, fluroxypyr, mecoprop and other aryloxyalkanoic acid compounds and their salts; such as bensulfuron methyl, methylsulfuron methyl, nicosulfuron, primsulfuron methyl, cyclosulfamuron Sulfonylurea compounds; imidazolinone compounds such as imazapyr, imazaquin, imazetapir and their salts; sulfanthrazone, paraquat, flumelam, triflusulfuronmethyl, phenoxaprop Examples include chill, cyhalohop butyl, diflufeni
- Insect growth control compounds include difluventhrone, chlorfluazuron, lufenuron, hexaflumuron, fluenoxuron, flucycloxuron, cyromazine, Difenthiuron, Hexithiazox, Novallon, Tefluvenslon, Triflumuron, 1 _ (2, 6-Diflurobenbenzoyl) 1 3— [2-Fluoro-4 (Trifluoromethyl) phenyl] Urea, 1 One (2, 6-difluorobenzoyl)
- Examples include 3 R, 4 R, 6 R-carane-1,4-diol, 2,5-pyridinedipropyl dicarboxylate, and the like.
- the water solubility at 20 ° C is as high as 1 O OmgZL or more. Even pesticidal compounds can be microencapsulated.
- examples of the C 1 -C 4 alkyl group represented by R ′ and R 2 in formula (I) include a methyl group, an ethyl group, a propyl group, and a butyl group.
- the fatty acid ester represented by the formula (I) is obtained by converting the carboxy group of ricinoleic acid or 12-hydroxystearic acid into a rearkoxycarbonyl group by condensation with a lower alcohol compound, and further condensing the hydroxy group with a lower fatty acid. It can be obtained by using a reacyloxy group.
- Examples of the fatty acid ester represented by the formula (I) include C1-C4 alkyl ester of O-acetylricinoleic acid, C1-C4 alkyl ester of 12-acetoxystearic acid, and more specifically A typical example is
- the droplets in the microcapsule are obtained by suspending the solid agricultural chemical compound in the fatty acid ester represented by the formula (I), and further contain other organic solvents.
- the organic solvent include aliphatic hydrocarbons such as trimethylpentane, aromatic hydrocarbons such as phenyl silylethane, alkylbenzene and alkylnaphthalene, ethers such as 2-ethylhexyl ether, mineral oils such as machine oil, and cottonseed oil.
- the amount of the organic solvent is generally 1 Z2 or less, preferably 3Z7 or less in terms of weight ratio to the amount of terbinol, dihydroterpineol, terpinel acetate, dihydroterpinel acetate or a mixture thereof. Further, it is preferably 14 or less.
- the amount of the solid agrochemical compound in the droplets is usually 5Z100 to 40100, preferably 10100 to 30100, as a weight ratio with respect to the amount of the fatty acid ester represented by the formula (I).
- the particle size of the solid agricultural chemical compound particles suspended in the droplets is usually 10 ⁇ m or less, preferably 1 to 5 ⁇ m in volume median diameter, and 10 ⁇ m
- the cumulative volume of particles having a particle size of m or more is preferably 10% or less.
- the volume median diameter is calculated by analyzing images of a large number of particles measured by the laser-light diffraction scattering method based on the Mie scattering theory. A specific measuring machine is Master Sizer 2000 (Malvern). Product name).
- the particle size of the droplet in the microcapsule is almost the same as the particle size of the microcapsule.
- the particle size of the microcapsules is usually in the range of 1 to 80 ⁇ m, preferably 5 to 50 ⁇ m in terms of volume median diameter.
- the resin that forms the microcapsule film includes, for example, a polyurethane resin, a polyurethane resin, a polyamide resin, a polyester resin, a polysulfonate resin, a polysulfonamide resin, an aminoblast resin, and a urea formalin resin. And melamine formalin resin.
- a polyurethane resin or a urea resin which has good storage stability of the microcapsules, particularly storage stability at high temperatures, is preferable.
- the amount of the resin forming the microcapsule film is usually in the range of 5 to 30% by weight with respect to the total amount of the microcapsule.
- the coating of droplets with resin is usually performed by forming a resin film by the interfacial polymerization method, and the oil-soluble raw material in the two types of raw materials that form the resin is suspended in the suspension of the agrochemical compound.
- the water-soluble raw material is dissolved in the water in which the suspension is dispersed in the two types of raw materials that form the resin, and the two types of raw materials are formed at the interface between the suspension droplet and water.
- a film can be formed by performing a polymerization reaction. The film thickness of the coating can be calculated from the particle size of the droplet and the amount of resin constituting the coating.
- the polyurethane resin or urea resin used as the coating film of the micro force cell of the present invention is usually obtained by reacting polyisocyanate with polyalcohol or polyamine.
- polyisocyanates examples include hexamethylene diisocyanate, an adduct of hexamethylene diisocyanate and trimethylolpropane, hexamethylene diisocyanate ⁇ 3 molecules of a piuret ⁇ condensate, and tolylene diisocyanate ⁇ ⁇ ⁇ .
- One isocyanate group of a chiylene diisocyanate is composed of an isocyanurate with two molecules of tolylene diisocyanate, and the other isocyanate part is composed of two molecules of another hexamethylene diisocyanate.
- isocyanurate condensate an isocyanurate condensate of hexamethylene diisocyanate, or an isocyanurate condensate of isophorone dissocyanate.
- polyalcohol include ethylene glycol, propylene glycol, butylene glycol, and cyclopropylene glycol.
- polyamine include ethylene diamine, hexamethylene diamine, diethylene triamine, and triethylene teramine.
- the microcapsules of the present invention are generally used as an agrochemical composition in the form of an aqueous suspension composition dispersed in water.
- the agrochemical composition is obtained by dispersing microcapsules in water, and further increases the viscosity if necessary.
- Additives such as agents, antifreezing agents, preservatives, specific gravity regulators, etc. are added, and the weight of water in the agricultural chemical composition is usually 0.8 to 2 times the weight of the microcapsules.
- This production method comprises (a) a first step in which a solid agricultural chemical compound is pulverized in a fatty acid ester represented by formula (I) to form a suspension, and (b) the obtained suspension and water are mixed. A second step of preparing droplets, and (c) a third step of forming a resin film around the droplets.
- the solid agrochemical compound is pulverized using, for example, a pulverizer such as a bead mill, a pole mill, or a rod mill.
- a pulverizer such as a bead mill, a pole mill, or a rod mill.
- Specific examples of the pulverizer include Attritor (Mitsui Miike Chemical) and Dino Mill (WI LLY A BACHOFEN AG.
- MASHI NENFABRI K (Switzerland), colloid mill (manufactured by Special Machine Industries), pearl mill (manufactured by Serizawa Tekko).
- the solid agricultural chemical compound is wet pulverized in the presence of the fatty acid ester represented by the formula (I)
- the particles of the solid agricultural chemical compound are uniformly dispersed, and the pulverized particles are hardly agglomerated with each other. Since the viscosity of the suspension at that time does not become very high, the power load on the pulverizer in the first step is small, and manufacturing is easy.
- the resin forming the film is a polyurethane resin or a polyurethane resin
- the polyisocyanate is added in advance to the suspension obtained in the first step.
- the suspension obtained in the first step is preferably used immediately in the next step.
- a stirrer such as a probe stirrer, a turbine stirrer, or a high-speed shear stirrer is usually used, and examples of stirrers include: TK Homomixer (manufactured by Special Machine Industries Co., Ltd.) SEM (manufactured by Em.Technique Co., Ltd.), Polytron homogenizer, Megatron homogenizer (KINEMATICA), Supraton (manufactured by Tsukishima Kikai Co., Ltd.). Add the suspension to water and stir using a stirrer.
- the weight of water in which the suspension is dispersed is usually in the range of 0.8 to 2 times the weight of the suspension.
- Deionized water is preferably used as the water for dispersing the suspension, and additives such as thickeners, antifreeze agents, preservatives, and specific gravity regulators may be added as necessary. .
- Thickeners include natural polysaccharides such as xanthan gum, rhamzan gum, locust bean gum, carrageenan, and ulan gum, synthetic polymers such as sodium polyacrylate, semi-synthetic polymers such as carboxymethyl cellulose, aluminum magnesium silicate, Examples include smect tie, bentonite, hectolite, mineral powders such as dry silica, and alumina sol.
- the antifreezing agent include propylene glycol.
- preservatives include p-hydroxybenzoic acid esters and salicylic acid derivatives.
- Specific gravity regulators include water-soluble salts such as sodium sulfate and water-soluble compounds such as urea.
- the suspension has a low viscosity, and when the suspension and water are mixed with a stirrer, the suspension is relatively easily dispersed in water to form droplets. Since strong stirring is not required at the time of dispersion, there are few equipment restrictions for this process. Even when a solid agrochemical compound having high water solubility is used, the agrochemical compound is retained in the fatty acid ester represented by the formula (I) as solid particles, so that the solid agrochemical compound is almost transferred to the aqueous phase. Of course, droplets can be prepared.
- the polyalcohol is added in advance to the water in which the suspension is dispersed, or the polyalcohol is added to the aqueous phase after the second step.
- the resin that forms the film is a polyurea resin
- the method for forming the resin film around the droplets is not particularly limited, and a normal microencapsulation method such as an interfacial polymerization method or l ns i tu polymerization method can be used.
- a normal microencapsulation method such as an interfacial polymerization method or l ns i tu polymerization method can be used.
- an aqueous dispersion of droplets to which raw materials have been added in advance is heated to a temperature at which the polymerization reaction proceeds, or one raw material for forming a resin is added to the aqueous phase of the aqueous dispersion of droplets.
- one of the raw materials forming the resin is reactivated by adjusting pH or the like.
- the aqueous dispersion of the droplets is heated to 40 to 80 ° C. with stirring, and held for about 0.5 to 48 hours, around the droplets.
- the resin that forms the film is a polyurea resin, for example, adjust the liquidity of the aqueous dispersion of droplets to neutral to weakly alkaline, and hold it at 0 to 50 ° 0 for about 0.5 to 48 hours.
- a film of polyurethane resin is formed around the droplets.
- aqueous suspension composition of the microphone mouthpiece thus obtained, most of the solid agricultural chemical compound is present in the microforce capsule as solid particles, and is dissolved or suspended in the water outside the coating of the microcapsule.
- the amount of cloudy pesticide compound is less than the total amount of the pesticide compound.
- the microcapsule aqueous suspension composition of the present invention obtained by the above production method can also be used as a powder preparation of microcapsules by centrifugation, filtration, spray drying or the like. Further, a thickener, an antifreezing agent, an antiseptic, a specific gravity adjusting agent, water and the like can be further added to the aqueous suspension composition of the microcapsules.
- the microcapsules of the present invention are used, for example, as an agricultural chemical composition containing 0.1 to 30% by weight of a solid agricultural chemical compound in the total amount of the aqueous suspension composition.
- the agricultural chemical composition containing the microphone mouthpiece of the present invention is used in the amount of the solid agricultural chemical compound in the pest or the pest habitat. It is applied by spreading at a rate of about Z 1 0 00 m 2 , preferably about 1 to 10 0 g Z 1 0 0 0 m 2 .
- Min is a compound with a melting point of 82.0 ° C and water solubility> 590 g / L (pH 7.0, 20 ° C) and is a bactericidal compound, procymidone (N- (3, 5 —Diclonal phenyl) 1, 2-Dimethylcyclopropane 1, 2-dicarboximide) has a melting point of 1 66— 1 66.5 ° C and water solubility of 4.5 mg / L (25 ° C).
- clothianidin clothianidin (clothianidin: (E) 1 1 1 (2-black mouth-1, 3-thiazole-5-yl) 1 3-methyl-2- ditroguanidine) has a melting point of 1 76. 8 ° C, water This compound has a solubility of 0.304 gZL (pH 4.0, 20 ° C).
- procymidone and methyl O-acetyl ricinoleate are mixed with 800 g, and the mixture is mixed with a high-speed shearing stirrer (Polytron homogenizer, KINEMATICA AG) for about 10 minutes.
- a dynomill (vessel size 600 mL, WILLY A. BACHOFEN AG. MASHINENFABRIK) filled with beads (1.25 mm zirconia) 1 1 20 g, feed rate 3 LZhr, circumferential speed 1 OmZsec Further, wet pulverization was performed under the conditions described above.
- the volume median diameter of procymidone particles after wet milling was 2.6 ⁇ m. Procymidone particles were almost uniformly suspended in the solvent, and almost no aggregation was observed. The viscosity of the suspension during wet milling was 205 Om Pas (Brookfield viscometer, rotor No. 3, 6 rpm).
- aqueous suspension composition 1 an aqueous suspension composition of procymidone microcapsules (hereinafter referred to as aqueous suspension composition 1).
- aqueous suspension composition 1 The volume median diameter of the microcapsules obtained at this time (Malvern Master Sizer
- aqueous suspension composition 2 an aqueous suspension composition of ditenbilam microcapsules (hereinafter referred to as aqueous suspension composition 2).
- the volume median diameter (Malvern Master Sizer 2000) of the microcapsules obtained at this time was 21.3 ⁇ m.
- MASHINENFABRIK MASHINENFABRIK filled with beads (1.25 mm zirconia) 1 1 2 O g, 3 L hr, Further wet pulverization was performed under the condition of a peripheral speed of 1 OmZsec.
- the volume median diameter of clothianidin particles after wet pulverization was 2.6 ⁇ m.
- the clothianidin particles are almost uniformly suspended in the solvent, and agglomeration is almost impossible. It was hardly recognized.
- the viscosity of the suspension during wet grinding was 208 Om Pas (Brookfield viscometer, rotor No. 3, 6 rpm).
- the mixture was stirred for 5 minutes at 0 rpm .
- the viscosity of the resulting dispersion was also 220 OmPa * s (Brookfield viscometer, rotor No. 2, 6 rpm).
- aqueous suspension composition 3 an aqueous suspension composition of clothianidin microphone mouth capsule
- the volume average particle size of the microcapsules obtained at this time was 21. Ojt m.
- Clothianidin 244.2 g was mixed with methyl O-acetylethyl ricinoleate (Rick Sizer I C-101, Ito Oil Co., Ltd., content 95.5%) 755.6 g, and the mixture was mixed with a high-speed shearing stirrer. (Polytron homogenizer, manufactured by KINEMATICA AG) was used for coarse grinding for about 10 minutes. Using the resulting mixture, beads (1.25 mm zirconia) 1 1 Dynomill (Bessel size 60 OmL, WILLY A. BACHOFEN AG. NIASHINENFABRIK) filled with 20 g, feed rate 3 LZhr, peripheral speed 1 Further wet pulverization was performed under the condition of 0 m / sec.
- the volume median diameter of clothianidin particles after wet grinding was 2.7 m.
- the clothianidin particles were almost uniformly suspended in the solvent, and almost no aggregation was observed.
- the viscosity of the suspension during wet pulverization was 2100 mPa ⁇ S (Brookfield viscometer, rotor No. 2, 6 rpm).
- aqueous suspension composition 4 an aqueous suspension composition of clothianidin microphone mouth capsule
- the volume average particle size of the microcapsules obtained at this time was 18.2 ⁇ m.
- the volume median diameter of clothianidin particles after wet grinding was 2.4 m.
- the clothianidin particles were almost uniformly suspended in the solvent, and almost no aggregation was observed.
- the viscosity of the suspension during wet pulverization was 3900 mPa ⁇ S (Brookfield viscometer, mouthpiece No. 2, 6 rpm).
- aqueous suspension composition 5 an aqueous suspension composition of clothianidin microphone mouth capsule (hereinafter referred to as aqueous suspension composition 5).
- the volume average particle size (Malvern Mastersizer 2000) of the microcapsules obtained at this time was 22. OjUm.
- Comparative Suspension Composition an aqueous suspension composition of microcapsules (hereinafter referred to as Comparative Suspension Composition) was prepared in the same manner as in Production Example 2 except that 800 g of methyl O-acetyl ricinoleate was replaced with 800 g of isodecyl adipate. It is written as 1.) However, obtained When the micro force psel was observed with an optical microscope, the presence of solid particles was hardly observed in the micro force psell.
- An aqueous suspension composition of microcapsules (hereinafter referred to as comparative suspension composition) was prepared in the same manner as in Production Example 3, except that 800 g of methyl O-acetylylricinoleate was replaced with 800 g of isodecyl adipate in Production Example 3. It is written as 2.) However, when the micro force pushell was observed with an optical microscope, the presence of solid particles in the micro force pushell was hardly observed.
- the aqueous suspension of microcapsules obtained in Production Example 1-5 was stored at 54 ° C. for 2 weeks.
- the state of the microcapsules in the aqueous suspension composition before and after the storage was observed by the following method.
- the aqueous suspension composition of microcapsules was shaken well 20 times, and then 20 L was accurately weighed and diluted with 2 mL of distilled water. Take a drop of the diluted solution on a glass slide and use an optical microscope (HI-S CO PE Advanced KH-3000 manufactured by HI ROX) to microscopically exist in a field of 372 i mx 500 im at a magnification of 350 times. The number of capsules was counted. Counting the number of microforce pexes in each sample was performed on three different fields of view on the sample on one slide glass, and the average value was taken as the microcapsule density. The results are shown in Table 1.
- Aqueous suspension composition 5 40 43 There was no change in the observed state of the micro force pusher, and no particular change was observed in the number of microphone force pushers in the field of view.
- Test example 2 (microencapsulation rate)
- the aqueous suspension compositions of micro-force cells obtained in Production Example 2 and Comparative Production Example 1 were each sampled at 1 O g and centrifuged at 10,000 rpm for 30 minutes (Himac S CR 20 BB, manufactured by Hitachi, Ltd.) Centrifuge rotor used: P RP—20). Thereafter, the amount of nitenpyram in the supernatant of the sample was measured to determine the amount of nitenpyram outside the membrane of the microcapsule, and the microencapsulation rate of bitenvirum was calculated. The results are shown in Table 2.
- Samples of aqueous suspensions of micro-force cells obtained in Production Examples 3-5 and Comparative Production Example 2 were sampled at 10 g each, and centrifuged at 10,000 rpm for 30 minutes (Himac S CR20 BB, Made by Hitachi, Ltd. Centrifugal rotor: P RP—20). Thereafter, the content of clothianidin in the supernatant of the sample was measured to determine the amount of cupiocyanidin outside the membrane of the microcapsule, and the microencapsulation rate of clothianidin was calculated. The results are shown in Table 3.
- Table 3 shows the results of the measurement of the amount of clothianidin in the mic mouth force pushell after storing the above microcapsule aqueous suspension composition at 54 ° C for 2 weeks.
- Clothia in microcapsules Clothiaanidine content in microcapsules (immediately after production) Content of dicin (after 2 weeks at 54 ° C) Aqueous suspension composition 3 99. 2 99. 3
- microcapsules of the present invention are useful for the preparation of sustained-release agricultural chemical compounds.
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Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BRPI0619826A BRPI0619826B1 (pt) | 2005-12-14 | 2006-11-22 | microcápsula de pesticida e método para produzir a referida microcápsula. |
ES06833686.6T ES2513141T3 (es) | 2005-12-14 | 2006-11-22 | Pesticida microencapsulado |
EP06833686.6A EP1961303B1 (en) | 2005-12-14 | 2006-11-22 | Microencapsulated pesticide |
AU2006324753A AU2006324753B2 (en) | 2005-12-14 | 2006-11-22 | Microencapsulated pesticide |
CN2006800474603A CN101330826B (zh) | 2005-12-14 | 2006-11-22 | 微胶囊化的农药 |
US12/086,341 US9060510B2 (en) | 2005-12-14 | 2006-11-22 | Microencapsulated pesticide |
KR1020087017051A KR101424290B1 (ko) | 2005-12-14 | 2006-11-22 | 마이크로 캡슐화 농약 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005360101 | 2005-12-14 | ||
JP2005-360101 | 2005-12-14 |
Publications (1)
Publication Number | Publication Date |
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WO2007069461A1 true WO2007069461A1 (ja) | 2007-06-21 |
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ID=38162772
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2006/323883 WO2007069461A1 (ja) | 2005-12-14 | 2006-11-22 | マイクロカプセル化された農薬 |
Country Status (9)
Country | Link |
---|---|
US (1) | US9060510B2 (ja) |
EP (1) | EP1961303B1 (ja) |
KR (1) | KR101424290B1 (ja) |
CN (1) | CN101330826B (ja) |
AU (1) | AU2006324753B2 (ja) |
BR (1) | BRPI0619826B1 (ja) |
ES (1) | ES2513141T3 (ja) |
MY (1) | MY147222A (ja) |
WO (1) | WO2007069461A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101379975A (zh) * | 2007-09-05 | 2009-03-11 | 住友化学株式会社 | 农药组合物 |
WO2010137743A1 (en) * | 2009-05-29 | 2010-12-02 | Sumitomo Chemical Company, Limited | Method for producing microcapsule |
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JP5659695B2 (ja) | 2010-10-28 | 2015-01-28 | 住友化学株式会社 | マイクロカプセル製剤の製造方法およびその製造方法で製造されるマイクロカプセル製剤 |
JP2012116832A (ja) * | 2010-11-11 | 2012-06-21 | Sumitomo Chemical Co Ltd | 有害生物防除成分を含有する分散液の製造方法及びマイクロカプセルの製造方法 |
BR112015011742A2 (pt) * | 2012-11-21 | 2017-07-11 | David Stafford Aaron | composição de fertilizante |
KR101596350B1 (ko) * | 2013-08-30 | 2016-02-22 | (주)국보싸이언스 | 우레탄-우레아 복합 마이크로캡슐화 살충제 |
CN106106495B (zh) * | 2016-06-15 | 2019-01-08 | 中国农业科学院植物保护研究所 | 一种噻虫胺壳聚糖微球及其制备方法和应用 |
CN111202061B (zh) * | 2020-03-10 | 2021-02-12 | 宋浩 | 一种水性自乳化有机硫磷农药微胶囊及其制备方法 |
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CN101379975A (zh) * | 2007-09-05 | 2009-03-11 | 住友化学株式会社 | 农药组合物 |
CN101379975B (zh) * | 2007-09-05 | 2013-12-11 | 住友化学株式会社 | 农药组合物 |
WO2010137743A1 (en) * | 2009-05-29 | 2010-12-02 | Sumitomo Chemical Company, Limited | Method for producing microcapsule |
JP2010275238A (ja) * | 2009-05-29 | 2010-12-09 | Sumitomo Chemical Co Ltd | マイクロカプセルの製造方法 |
US20120065070A1 (en) * | 2009-05-29 | 2012-03-15 | Sumitomo Chemical Company, Limited | Method for producing microcapsule |
US10350569B2 (en) * | 2009-05-29 | 2019-07-16 | Sumitomo Chemical Company, Limited | Method for producing microcapsule |
Also Published As
Publication number | Publication date |
---|---|
EP1961303B1 (en) | 2014-10-01 |
EP1961303A1 (en) | 2008-08-27 |
KR20080077683A (ko) | 2008-08-25 |
US20090142406A1 (en) | 2009-06-04 |
MY147222A (en) | 2012-11-14 |
US9060510B2 (en) | 2015-06-23 |
AU2006324753A1 (en) | 2007-06-21 |
BRPI0619826A2 (pt) | 2011-10-18 |
CN101330826B (zh) | 2012-08-22 |
EP1961303A4 (en) | 2012-05-09 |
ES2513141T3 (es) | 2014-10-24 |
AU2006324753B2 (en) | 2012-07-26 |
BRPI0619826B1 (pt) | 2016-02-10 |
KR101424290B1 (ko) | 2014-08-01 |
CN101330826A (zh) | 2008-12-24 |
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