WO2020078145A1 - 一种呋虫胺可分散油悬浮剂及其制备方法 - Google Patents
一种呋虫胺可分散油悬浮剂及其制备方法 Download PDFInfo
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- WO2020078145A1 WO2020078145A1 PCT/CN2019/105168 CN2019105168W WO2020078145A1 WO 2020078145 A1 WO2020078145 A1 WO 2020078145A1 CN 2019105168 W CN2019105168 W CN 2019105168W WO 2020078145 A1 WO2020078145 A1 WO 2020078145A1
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- dinotefuran
- oil
- emulsifier
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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
-
- 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
-
- 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
- A01N43/90—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having two or more relevant hetero rings, condensed among themselves or with a common carbocyclic ring system
-
- 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
- A01N51/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds having the sequences of atoms O—N—S, X—O—S, N—N—S, O—N—N or O-halogen, regardless of the number of bonds each atom has and with no atom of these sequences forming part of a heterocyclic ring
-
- 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
- A01N53/00—Biocides, pest repellants or attractants, or plant growth regulators containing cyclopropane carboxylic acids or derivatives thereof
-
- 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
- A01N57/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds
- A01N57/10—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-oxygen bonds or phosphorus-to-sulfur bonds
- A01N57/16—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-oxygen bonds or phosphorus-to-sulfur bonds containing heterocyclic radicals
Definitions
- the present invention belongs to the technical field of pesticide formulation processing, in particular to a dispersible oil suspension of dinotefuran and its preparation method.
- Dinotefuran a third-generation nicotinic insecticide developed by Japan Mitsui Chemicals Co., Ltd., has a broad-spectrum insecticide, is a nicotinic acetylcholine receptor stimulant, and affects the central nervous system of insects through spinal nerve transmission. Touch, has contact killing and stomach poisoning effect and has excellent systemic penetration effect.
- Dinotefuran is very safe for mammals, birds and aquatic organisms, and has no phytotoxicity to crops. It can control various pests such as Hemiptera, Lepidoptera, Coleoptera, Diptera, Hymenoptera, etc. White-backed planthoppers, gray planthoppers, black night-tailed cicadas, etc. have a high control effect.
- Fipronil belongs to a class of poorly soluble active ingredients that are not easily soluble in polar solvents such as water, the solubility in water at 25 ° C is only 40g / L, and are not easily soluble in medium and small polar solvents.
- the insoluble active ingredient the smaller the particle size in the preparation, the more the number of dispersed particles, the larger the surface area, and the larger the contact area with the target organism, the greater the effect of the drug.
- Dispersible oil suspending agent is a non-aqueous system (oil-based) as a dispersion medium of high dispersion and stable suspension system, using a class of oils that have been tested as synergistic additives and do not pollute crops as a dilution carrier
- a dosage form that improves the permeability and systemicity of pesticide active ingredients and has a very good synergistic effect.
- the dispersible oil suspension agent with dinotefuran as the main active ingredient mainly adopts the direct grinding method or the sand grinding method, and the pesticide active ingredient, the dispersant and other auxiliary agents are mixed, and the grinding is performed after the pre-dispersion or the pre-dispersion Then placed in a sand mill to grind and disperse.
- the particle size distribution of the active ingredient in the dispersible oil suspension prepared by the above method is wide, the particle size is usually above 0.5pm, the drug efficacy is low, the storage stability is poor, and the sanding medium (glass Between beads and zirconium beads), the sanding media and the inner wall of the cavity collide and rub against each other, which will produce mechanical impurities that cannot be removed by filtration.
- the introduced impurities affect the stability of the dispersible oil suspension agent.
- Chinese Patent 201 610739132.5 discloses a dinotefuran dispersible oil suspension agent and its preparation method, using a direct grinding method, the preparation particle size is 2 ⁇ 4 [ xm. Summary of the invention
- the embodiments of the present invention provide a preparation method of dinotefuran dispersible oil suspension agent to solve the problem that the preparation of the existing preparation process has a large particle size of dinotefuran particles, low efficacy, the introduction of mechanical impurities, etc. technical problem. Solution to the problem
- a method for preparing a dispersible oil suspension of dinotefuran including:
- step c) Under the state of high-speed stirring, add the dinotefuran liquid of step a) to the mixed oil of step b), and emulsify to obtain a W / 0 emulsion.
- the present invention also provides a dinotefuran dispersible oil suspension agent, which is a W / 0 emulsion, and the droplets of the W / 0 emulsion contain nanometer-sized nitrofurfuran crystal particles. ;
- water is used as a solvent to pre-dissolve dinotefuran, and then emulsified and dispersed into an oil base to form W / 0 emulsion droplets, so that the particle size of dinotefuran is nanometer-sized, the storage stability is good, and the diffusion speed is fast,
- the medicine has high efficacy; the invention uses water as a solvent, reduces environmental pollution, saves raw material costs, is safe and convenient, and water is also an interface stabilizer, has a thickening effect, enhances the storage stability of the preparation, replaces part of the oil base, and reduces costs.
- the particle size of the dinotefuran particles is large, the drug efficacy is low, and mechanical impurities are introduced.
- the embodiment of the present invention provides a preparation method of dinotefuran dispersible oil suspension agent, which uses water as a solvent, and prepares a formulation containing ultrafine particle size dinotefuran microparticles, which has good storage stability and fast diffusion speed , High efficacy.
- the present invention provides a preparation method of dinotefuran dispersible oil suspension, including:
- step c) Under the state of high-speed stirring, add the dinotefuran liquid of step a) to the mixed oil of step b), and emulsify to obtain a W / 0 emulsion.
- the solubility of dinotefuran in water at 25 ° C is only 40g / L, and when the water temperature is greater than 60 ° C, the solubility is greater than 2000g / L.
- the feature of sharply increasing solubility in water, using water as a solvent to dissolve dinotefuran, is environmentally friendly and has high production and application safety.
- the first emulsifier and dispersant are added to the aqueous solution of dinotefuran for pre-dispersion, and a homogeneous diflubenzide aqueous solution is prepared; then, the dinotefuran aqueous solution is prepared under high-speed stirring Add to the mixed oil agent for continuous stirring; during the stirring process, the dinotefuran aqueous solution is emulsified in the mixed oil agent and forms a W / 0 emulsion with ultra-fine nano-sized droplets. At the same time, due to the temperature drop Dinotefuran forms crystal nuclei in nano-sized droplets.
- the preparation prepared by the above preparation method has a nanometer particle size of the active ingredient, a narrow particle size distribution, good storage stability, a fast diffusion rate, and high drug efficacy.
- dinotefuran and emulsifying and dispersing agent are added to water in an order of mixing; moreover, the water as a solvent may be heated in advance, or may be mixed after dinotefuran and water are mixed Heat or heat after mixing the dinotefuran and emulsifying and dispersing agent with water.
- step a) is specifically: dissolving dinotefuran in water, adding a first emulsifier and a dispersing agent, and mixing to obtain diflubenzide aqueous solution.
- step a) is specifically: mixing dinotefuran, the first emulsifier, dispersant and water, and heating to dissolve to form dinotefuran; or: in hot water Add the first emulsifier Qi 1J, dispersant, and dinotefuran in sequence, dissolve and mix to form the dinotefuran aqueous solution.
- the high-speed stirring is mainly to enable the dinotefuran aqueous solution to be fully emulsified in the mixed oil, and to form W / 0 emulsion droplets with a sufficiently small particle size, and to improve the dinotefuran dispersible oil in the embodiment of the present invention. Suspension stability.
- step c) the rotation speed of the high-speed stirring is above 500 ⁇ 1000rpm; the stirring time is above 0.5h.
- the rotation speed of the high-speed stirring is above 500 ⁇ 1000rpm; the stirring time is above 0.5h.
- the emulsification effect is optimal, and the W / 0 milky liquid system is relatively stable, and it is not easy for particles to settle and stratify.
- the linear velocity of the dinotefuran aqueous solution added to the mixed oil is 10-50 m / min.
- the solubility of dinotefuran is poor. When the temperature is lower than 50 ° C, the solubility in water is low, and more water needs to be added to dissolve dinotefuran. Excessive amount of water may easily cause the embodiments of the present invention.
- the dispersing oil suspending agent is too thick, and causes the droplet size to be too large, reducing the stability of the W / 0 emulsion.
- step a) heating and dissolving temperature is 50 ⁇ 80 ° C.
- the excessive amount of water may easily cause problems such as demulsification, large droplets, and thickening of the system.
- the mass ratio of water to the first emulsifier is (5 to 15): (8 to 12 )
- the mass ratio of water to the first emulsifier is greater than 15: 8, the W / 0 emulsion is too thick, the droplet size is too large, and the stability is reduced.
- the mass ratio of dinotefuran, water, the first emulsifier and dispersant is (5 ⁇ 30): (5 ⁇ 15): (8 ⁇ 1 2): (2 ⁇ 4).
- the mass ratio of the mixed oil agent and the dinotefuran aqueous solution is 1: (0.1 ⁇ 1), which is favorable for forming a W / 0 emulsion, ensuring complete emulsification of water, and obtaining nano-sized particles.
- step b) further includes adding: adding a second active ingredient, an antioxidant, and a pH adjusting agent;
- the mass ratio of the second active ingredient, antioxidant, pH adjuster, second emulsifier and thickener is preferably 1:
- step b) is also added simultaneously: a second active ingredient, an antioxidant and a pH adjuster; a second active ingredient, an antioxidant, a pH adjuster, a second emulsifier and a thickener Has a mass ratio of 1
- step b) is also added: the second active ingredient and the antioxidant; the mass ratio of the second active ingredient, the antioxidant, the second emulsifier and the thickener is 1: ( 0.1 ⁇ 2): (0.1 ⁇ 10): (0. 1 ⁇ 2);
- Step b) also added: the second active ingredient and the pH adjusting agent; the mass ratio of the second active ingredient, the pH adjusting agent, the second emulsifier and the thickening agent is 1: (0.01 ⁇ 0.5): (0.1 ⁇ 10): (0.1 ⁇ 2).
- the second active ingredient of the embodiment of the present invention is preferably any one of emamectin benzoate, avermectin, pyriproxyfen, lambda-cyhalothrin and chlorpyrifos .
- emamectin benzoate, avermectin, pyriproxyfen, lambda cyhalothrin, and chlorpyrifos have good oil solubility, can be dissolved in the oil base, and with Dinotefuran has a synergistic effect.
- Adding an antioxidant can prevent the active ingredient from being oxidatively decomposed by air.
- the antioxidant in the embodiment of the present invention is preferably one or more of dibutylhydroxytoluene, butylhydroxyanisole and t-butylhydroquinone.
- Dibutyl hydroxytoluene, butyl hydroxy anisole and tert-butyl hydroquinone have strong antioxidant capacity, and have good oil solubility and can be dissolved in the oil base.
- the pH adjusting agent of the embodiment of the present invention is preferably one or more of hydrochloric acid, glacial acetic acid and citric acid.
- Hydrochloric acid, glacial acetic acid and citric acid have better acid adjustment effect, and hydrochloric acid, glacial acetic acid is more fluid at room temperature A good liquid, citric acid is solid at room temperature, it is convenient to measure and use when using, and it is convenient to operate.
- the first emulsifier and the second emulsifier are each independently selected from alkylbenzene sulfonate, dioctyl sulfosuccinate, fatty alcohol polyoxyethylene ether, castor oil poly One or more of oxyethylene ether, sorbitan polyoxyethylene polyoxypropylene, styrylphenyl polyoxyethylene ether and styrene phenol formaldehyde resin polyoxyethylene ether;
- the first emulsifier is different from the second emulsifier.
- the first emulsifier is preferably an alkylbenzene sulfonate, dioctyl sulfosuccinate, fatty alcohol polyoxyethylene ether, castor oil polyoxyethylene ether, sorbitan polyoxyethylene polyoxyethylene One of oxypropylene, styrylphenyl polyoxyethylene ether, and styrene phenol formaldehyde resin polyoxyethylene ether.
- the second emulsifier is preferably an alkylbenzene sulfonate, dioctyl sulfosuccinate, fatty alcohol polyoxyethylene ether, castor oil polyoxyethylene ether, sorbitan polyoxyethylene polyoxypropylene, One or both of styryl phenyl polyoxyethylene ether and styrene phenol formaldehyde resin polyoxyethylene ether.
- the dispersant is selected from one or more of lignin sulfonate, polycarboxylate, naphthalene sulfonate and polyoxyethylene polyoxypropylene block copolymer.
- Lignin sulfonate, polycarboxylate, naphthalene sulfonate and polyoxyethylene polyoxypropylene block copolymer have a good viscosity reducing and dispersing effect on dinotefuran, and have good compatibility, and can be compatible with most emulsifiers Combined use.
- the thickener is selected from one or more of silica, attapulgite, magnesium aluminum silicate, and organic bentonite.
- Silica, attapulgite, magnesium aluminum silicate and organic bentonite can adjust the viscosity of the dispersible oil suspending agent to form a three-dimensional network structure, stabilize the solid particles, and delay the settlement.
- the oil base is preferably trimethylbenzene, S-100 (No. 100 solvent oil), S-150 (No. 150 solvent oil), S-20 (No. X200 solvent oil), sec-butyl acetate
- S-100 No. 100 solvent oil
- S-150 No. 150 solvent oil
- S-20 No. X200 solvent oil
- sec-butyl acetate One or more of esters, methyl oleate, rosin-based vegetable oil, soybean oil, corn oil and mineral oil, with stable properties, wide sources, low viscosity and high safety
- the present invention also provides a dispersible oil suspension of dinotefuran, which is a W / 0 emulsion, and the droplets of the W / 0 emulsion contain nanometer-sized dinotefuran crystal particles;
- the second active ingredient is selected from any one of emamectin benzoate, avermectin, pyriproxyfen, lambda-cyhalothrin, and chlorpyrifos.
- the particle size of the dinotefuran crystal particles in the droplets in the W / 0 emulsion is 200 nm to 500 nm.
- the emulsifier is selected from alkylbenzene sulfonate, dioctyl sulfosuccinate, fatty alcohol polyoxyethylene ether, castor oil polyoxyethylene ether, sorbitan polyoxyethylene polyoxypropylene , One or more of styryl phenyl polyoxyethylene ether and styrene phenol formaldehyde resin polyoxyethylene ether; and / or
- the dispersant is selected from one or more of lignin sulfonate, polycarboxylate, naphthalene sulfonate and polyoxyethylene polyoxypropylene block copolymer; and / or
- the thickener is selected from one or more of silica, attapulgite, magnesium aluminum silicate and organic bentonite; and / or
- the antioxidant is selected from one or more of dibutylhydroxytoluene, butylhydroxyanisole and t-butylhydroquinone; and / or
- the pH adjusting agent is selected from one or more of hydrochloric acid, glacial acetic acid and citric acid; and / or
- the oil base is selected from one or more of trimethylbenzene, S-100, S-150, S-200, sec-butyl acetate, methyl oleate, rosin-based vegetable oil, soybean oil, corn oil and mineral oil Species.
- This embodiment provides a dispersible oil suspension of dinotefuran, the formulation of which is shown in Table 1:
- step S11 dinotefuran solution
- step S12 dinotefuran solution
- Embodiment 2 [0071]
- This embodiment provides a disproportionate diflubenzuron oil suspending agent, the formula is as follows Table 2:
- S21 Mix dinotefuran and deionized water, and heat to 56 ° C with stirring at 500 rpm, so that dinotefuran is completely dissolved in deionized water; add the first emulsifier and dispersant to continue stirring to obtain dinotefuran Amine water agent; [0076] S22, the second active ingredient, the second emulsifier, a thickener, an antioxidant and an oil base are mixed, mechanically stirred at 1000 rpm until uniform, to obtain a mixed oil;
- step S21 high-speed stirring at 8000 rpm
- the dinotefuran aqueous solution of step S21 is added dropwise to the mixed oil agent of step S22 at a linear speed of 30 m / min, and the mixture is continuously stirred to obtain 6% dinotefuran ⁇ methylaminoa Vermectin benzoate is a dispersible oil suspension agent.
- This embodiment provides a dispersible oil suspension of dinotefuran, the formulation of which is shown in Table 3:
- Embodiment four are identical to Embodiment four:
- the present embodiment provides a dispersant diflubenzuron oil suspending agent, the formulation of which is shown in Table 4 below:
- the preparation includes the following steps:
- step S43 Under high-speed stirring at 8000 rpm, the dinotefuran aqueous solution of step S41 is added dropwise to the mixed oil solution of step S42 at a linear speed of 40 m / min to obtain continuous stirring to obtain 12% of dinotefuran and avermectin. It can disperse oil suspension agent.
- This embodiment provides a dispersible diflubenzuron oil suspending agent, the formulation of which is shown in Table 5 below:
- step S53 Stir at high speed at 20,000 rpm, add the dinotefuran aqueous solution of step S31 to the mixed oil formulation of step S32 at a linear speed of 30 m / min to obtain a dispersible oil suspension containing 15% dinotefuran.
- This embodiment provides a disproportionate diflubenzuron oil suspending agent, the formulation of which is shown in Table 6 below:
- the preparation includes the following steps:
- step S63 the high speed stirring lOOOOrpm, dinotefuran agent of step S61 by / 40m min linear velocity of step S62 is added dropwise a mixture of the oil, to give 20% dinotefuran-dispersible pyriproxyfen Oil suspending agent.
- Embodiment 7 is a diagrammatic representation of Embodiment 7:
- This embodiment provides a disproportionate dispersible oil suspension agent, the formulation of which is shown in Table 7 below:
- the preparation includes the following steps:
- step S73 Under high-speed stirring at 20,000 rpm, the dinotefuran aqueous solution in step S71 is added dropwise to the mixed oil formulation in step S72 at a linear speed of 30 m / min to obtain a dispersible oil suspension containing 20% dinotefuran.
- This embodiment provides a dispersible oil suspension of dinotefuran, the formulation of which is shown in Table 8 below:
- step S83 Under high-speed stirring at 1000 rpm, the dinotefuran aqueous solution of step S81 is added dropwise to the mixed oil formulation of step S82 at a linear velocity of 20 m / min to obtain 24% dinotefuran ⁇ high-efficiency cyhalothrin Ester dispersible oil suspending agent
- Embodiment 9 is a diagrammatic representation of Embodiment 9:
- This embodiment provides a disproportionate diflubenzuron oil suspending agent, the formulation of which is shown in Table 9 below:
- the preparation includes the following steps:
- S91 Mixing dinotefuran and deionized water and heating to 70 ° C with stirring at 500 rpm, so that dinotefuran is completely dissolved in the deionized water; adding the first emulsifier and dispersant to continue stirring to obtain furate Amine water agent; [0125] S92. Mix the second emulsifier, thickener and oil base, and mechanically stir at 600 rpm until uniform to obtain a mixed oil agent;
- step S91 Under high-speed stirring at 20,000 rpm, the dinotefuran aqueous solution in step S91 is added dropwise to the mixed oil formulation in step S92 at a linear velocity of 40 m / min to obtain a 25% diflubendiamide dispersible oil suspension.
- This embodiment provides a disproportionate dispersible oil suspension agent, the formulation of which is shown in Table 10 below:
- S101 Mix dinotefuran and deionized water and heat to 70 ° C. with stirring at 700 rpm, so that dinotefuran is completely dissolved in deionized water; add the first emulsifier and dispersant and continue to stir to obtain dinotefuran [0132]
- S102 Mix the second active ingredient, the second emulsifier, the thickener and the oil base, and mechanically stir at 900 rpm until uniform to obtain a mixed oil agent;
- step S101 Under high-speed stirring at 20,000 rpm, the dinotefuran aqueous solution in step S101 is added dropwise to the mixed oil agent in step S102 to obtain a dispersible oil suspension agent containing 30% dinotefuran and pyriproxyfen.
- This embodiment provides a dispersible oil suspension of dinotefuran, the formulation of which is shown in Table 11 below:
- Si ll. Mix dinotefuran and deionized water and heat to 70 ° C. with stirring at 700 rpm, so that dinotefuran is completely dissolved in deionized water; add the first emulsifier and dispersant to continue stirring to obtain fur [00139] S112, mixing the second emulsifier, thickener and oil base, and stirring mechanically at 900 rpm until uniform to obtain a mixed oil;
- step S11 under high-speed stirring at 15000 rpm, the dinotefuran aqueous solution in step S11 is added dropwise to the mixed oil agent in step S112 at a linear speed of 50 m / min to obtain a 30% diflubendiamide dispersible oil suspension agent .
- Embodiment 12 [0141]
- This embodiment provides a dispersible oil suspension of dinotefuran, the formulation of which is shown in Table 12 below:
- the preparation includes the following steps:
- step S121 Under high-speed stirring at 1000 rpm, the dinotefuran aqueous solution of step S121 is added dropwise to the mixed oil formulation of step S122 at a linear speed of 40 m / min to obtain a 30% diflubenzil-chlorpyrifos dispersible oil suspension Agent.
- Embodiment 13 is a diagrammatic representation of Embodiment 13:
- This embodiment provides a dispersible oil suspension of dinotefuran, the formulation of which is shown in Table 13 below:
- step S131 Under high-speed stirring at 1000 rpm, the dinotefuran aqueous solution of step S131 is added dropwise to the mixed oil formulation of step S132 at a linear speed of 30 m / min to obtain a 40% diflubenzil-chlorpyrifos dispersible oil suspension Agent.
- dinotefuran dispersible oil suspension agent prepared by sand milling method, the formula is as follows:
- Methyl oleate makes up 100%.
- Preparation method The above components are thoroughly mixed and placed in a sand mill to grind and disperse, sand milled to a particle size of about 5pm, and then filtered to obtain a 10% dinotefuran dispersible oil suspension agent.
- Preparation method The above components are thoroughly mixed and placed in a sand mill to grind and disperse, sand to a particle size of about 5pm, and then filtered to obtain 20% diflubenzuron dispersible oil suspension agent.
- Table 14 and Table 15 are the test results. As shown in the results, the appearance of the dinotefuran dispersible oil suspension agent in the embodiment of the present invention is uniform, the fluidity is good, and the cold and hot storage stability is qualified. Compared with the positive reference, the storage stability of the dinotefuran dispersible oil suspension agent of the embodiment of the present invention is superior to the dinotefuran dispersible oil suspension agent prepared by the sand milling method, and has excellent cold and hot storage stability. The diameter, suspension rate and other project indicators are also superior to the dinotefuran dispersible oil suspension prepared by the sand milling method.
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CN115104620B (zh) * | 2021-08-13 | 2023-08-11 | 山东恒利达生物科技有限公司 | 一种呋喃烟碱杀虫组合物及其应用 |
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