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 PDF

Info

Publication number
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
Authority
WO
WIPO (PCT)
Prior art keywords
dinotefuran
oil
emulsifier
preparation
dispersant
Prior art date
Application number
PCT/CN2019/105168
Other languages
English (en)
French (fr)
Inventor
吴成林
李谱超
陈贵兰
杨立平
Original Assignee
深圳诺普信农化股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳诺普信农化股份有限公司 filed Critical 深圳诺普信农化股份有限公司
Priority to AU2019360278A priority Critical patent/AU2019360278A1/en
Publication of WO2020078145A1 publication Critical patent/WO2020078145A1/zh

Links

Classifications

    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION 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
    • A01N25/00Biocides, 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
    • A01N25/02Biocides, 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
    • A01N25/04Dispersions, emulsions, suspoemulsions, suspension concentrates or gels
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION 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
    • A01N43/00Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
    • A01N43/34Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom
    • A01N43/40Biocides, 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
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION 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
    • A01N43/00Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
    • A01N43/90Biocides, 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
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION 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
    • A01N51/00Biocides, 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
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION 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
    • A01N53/00Biocides, pest repellants or attractants, or plant growth regulators containing cyclopropane carboxylic acids or derivatives thereof
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION 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
    • A01N57/00Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds
    • A01N57/10Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-oxygen bonds or phosphorus-to-sulfur bonds
    • A01N57/16Biocides, 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.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Plant Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Dentistry (AREA)
  • Pest Control & Pesticides (AREA)
  • Agronomy & Crop Science (AREA)
  • Zoology (AREA)
  • Environmental Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Toxicology (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

一种呋虫胺可分散油悬浮剂,其制备方法包括:a)在加热条件下,将呋虫胺、第一乳化剂、分散剂和水混合,溶解,得到呋虫胺水剂;b)将第二乳化剂、增稠剂和油基混匀,得到混合油剂;c)在高速搅拌状态下,将步骤a)的呋虫胺水剂加入步骤b)的混合油剂中,乳化得到W/O乳状液。通过上述方法,能够以水为溶剂预溶呋虫胺,然后乳化分散至油基中形成W/O乳状液,使得在液滴内析出的呋虫胺微粒粒径为纳米级,贮存稳定性好,扩散速度快,药效高。

Description

发明名称:一种呋虫胺可分散油悬浮剂及其制备方法 技术领域
[0001] 本发明属于农药制剂加工技术领域, 尤其涉及一种呋虫胺可分散油悬浮剂及其 制备方法。
背景技术
[0002] 呋虫胺, 为日本三井化学公司开发的第三代烟碱类杀虫剂, 杀虫广谱, 为烟碱 乙酰胆碱受体的兴奋剂, 通过脊柱神经传递影响昆虫中枢神经系统的突触, 具 有触杀和胃毒作用并具有卓越的内吸渗透作用。 呋虫胺对哺乳动物、 鸟类及水 生生物十分安全, 对作物无药害, 可防治半翅目、 鳞翅目、 鞘翅目、 双翅目、 膜翅目等各种害虫, 对水稻褐飞虱、 白背飞虱、 灰飞虱、 黑夜尾蝉等有很高的 防效。
[0003] 呋虫胺属于一类难溶性活性成分, 既不容易溶解于水等极性溶剂中, 在 25°C水 中的溶解度仅为 40g/L, 也不容易溶解于中小极性溶剂中。 对于难溶性活性成分 , 其在制剂中的粒径越小, 分散的微粒数量越多, 表面积越大, 与靶标生物的 接触面积越大, 发挥的药效就越大。
[0004] 可分散油悬浮剂是以非水体系(油基)为分散介质的高分散稳定悬浮体系, 是用 一类经过试验可作为增效助剂且不污染作物的油类作为稀释载体的一种剂型, 可提高农药活性成分的渗透性和内吸性, 有很好的增效作用。 目前, 以呋虫胺 为主要活性成分的可分散油悬浮剂主要采用直接研磨法或砂磨法, 将农药活性 成分、 分散剂和其他助剂混合, 在预分散之后进行研磨, 或者在预分散之后置 于砂磨机中研磨分散。 然而, 通过上述方法制得的可分散油悬浮剂中活性成分 的粒径分布宽, 粒径常在 0.5pm以上, 药效低, 贮存稳定性较差, 且砂磨过程中 砂磨介质(玻璃珠、 锆珠)间、 砂磨介质与腔体内壁相互碰撞、 摩擦, 会产生过滤 无法剔除的机械杂质, 引入的杂质影响可分散油悬浮剂的稳定性。 中国专利 201 610739132.5公开了一种呋虫胺可分散油悬浮剂及其制备方法, 采用直接研磨法 , 制剂粒径为 2〜 4[xm。 发明概述
技术问题
[0005] 本发明实施例提供了一种呋虫胺可分散油悬浮剂的制备方法, 以解决现有制备 工艺得到的制剂中呋虫胺微粒粒径较大, 药效低、 引入机械杂质等技术问题。 问题的解决方案
技术解决方案
[0006] 本发明实施例是这样实现的, 第一方面, 提供了一种呋虫胺可分散油悬浮剂的 制备方法, 包括:
[0007] a)在加热条件下, 将呋虫胺、 第一乳化剂、 分散剂和水混合, 溶解, 得到呋虫 胺水剂;
[0008] b)将第二乳化剂、 增稠剂和油基混匀, 得到混合油剂;
[0009] c)在高速搅拌状态下, 将步骤 a)的呋虫胺水剂加入步骤 b)的混合油剂中, 乳化 得到 W/0乳状液。
[0010] 第二方面, 本发明还提供了一种呋虫胺可分散油悬浮剂, 为 W/0乳状液, 所述 W/0乳状液的液滴内含有纳米级的呋虫胺结晶微粒;
[0011] 以其制备原材料为 100重量份计, 包括: 呋虫胺 5〜 30份; 第二活性成分 0〜 30 份; 乳化剂 8〜 20份; 分散剂 2〜 4份; 7]C5〜 15份; 增稠剂 0〜 3份; 抗氧化剂 0〜
1份; pH调节剂 0〜 0.3份; 油基补足。
发明的有益效果
有益效果
[0012] 本发明实施例中, 通过利用呋虫胺在热水中溶解度急剧增大的特性, 采用水作 为溶剂溶解呋虫胺, 然后将第一乳化剂和分散剂加入呋虫胺的水溶液中进行预 分散, 形成均一相的呋虫胺水剂, 再在高速搅拌状态下将呋虫胺水剂加入混合 油剂中进行混合搅拌; 在搅拌的过程中, 呋虫胺水剂在混合油剂中发生乳化并 形成具有超细的纳米级液滴的 W/0乳状液, 同时, 由于温度下降导致呋虫胺在纳 米级液滴内形成晶核, 进而使得本发明制剂中的活性成分的粒径更加细化, 达 纳米级。 [0013] 本发明以水为溶剂预溶呋虫胺, 然后乳化分散至油基中形成 W/0乳状液滴, 使 得呋虫胺微粒粒径为纳米级, 贮存稳定性好, 扩散速度快, 药效高; 本发明利 用水作为溶剂, 降低环境污染, 节省原料成本, 安全方便, 而且水还是界面稳 定剂, 具有增稠作用, 增强制剂贮存稳定性, 替代部分油基, 降低成本。
发明实施例
本发明的实施方式
[0014] 为了使本发明的目的、 技术方案及优点更加清楚明白, 以下结合实施例, 对本 发明进行进一步详细说明。 应当理解, 此处所描述的具体实施例仅仅用以解释 本发明, 并不用于限定本发明。
[0015] 为了解决现有制备工艺得到的制剂中呋虫胺微粒粒径较大, 药效低、 引入机械 杂质等技术问题。 本发明实施例提供了一种呋虫胺可分散油悬浮剂的制备方法 , 其采用水作为溶剂, 并制得了含有超细粒径的呋虫胺微粒的制剂, 贮存稳定 性好, 扩散速度快, 药效高。
[0016] 本发明的一种呋虫胺可分散油悬浮剂的制备方法, 包括:
[0017] a)在加热条件下, 将呋虫胺、 第一乳化剂、 分散剂和水混合, 溶解, 得到呋虫 胺水剂;
[0018] b)将第二乳化剂、 增稠剂和油基混匀, 得到混合油剂;
[0019] c)在高速搅拌状态下, 将步骤 a)的呋虫胺水剂加入步骤 b)的混合油剂中, 乳化 得到 W/0乳状液。
[0020] 在上述技术方案中, 呋虫胺在 25°C水中的溶解度仅为 40g/L, 当水温大于 60°C 时, 溶解度大于 2000g/L, 本发明实施例通过利用呋虫胺在热水中溶解度急剧增 大的特性, 采用水作为溶剂溶解呋虫胺, 绿色环保, 生产施用安全性高。
[0021] 本发明通过将第一乳化剂和分散剂加入呋虫胺的水溶液中进行预分散, 并制成 均一相的呋虫胺水剂; 然后, 在高速搅拌状态下将呋虫胺水剂加入混合油剂中 进行持续搅拌; 在搅拌的过程中, 呋虫胺水剂在混合油剂中发生乳化并形成具 有超细的纳米级液滴的 W/0乳状液, 同时, 由于温度下降导致呋虫胺在纳米级液 滴内形成晶核。 克服了现有技术中通过直接砂磨制得的可分散油悬浮剂中活性 成分粒径分布宽, 贮存稳定性较差的问题, 且避免了引入机械杂质, 生产效率 高, 稳定性好。 因而, 通过上述制备方法制得的制剂, 其活性成分的粒径纳米 化, 粒径分布窄, 贮存稳定性好, 扩散速度快, 药效高。
[0022] 进一步的, 本发明步骤 a)的呋虫胺和乳化分散剂加入水中混合的顺序没有先后 之分; 而且, 作为溶剂的水可以预先加热, 也可在呋虫胺和水混合之后再进行 加热, 或者在呋虫胺和乳化分散剂都和水混合之后再进行加热。
[0023] 在本发明的一些优选实施例中, 步骤 a)具体为: 将呋虫胺加热溶解于水中, 加 入第一乳化剂和分散剂混匀, 得到呋虫胺水剂。
[0024] 在其他的一些优选实施例中, 步骤 a)具体为: 将呋虫胺、 第一乳化剂、 分散剂 和水混合, 加热溶解, 形成呋虫胺水剂; 或者为: 在热水中依次加入第一乳化 齐 1J、 分散剂、 呋虫胺, 溶解混合, 形成呋虫胺水剂。
[0025] 高速搅拌主要是为了使得呋虫胺水剂能在混合油剂中充分乳化, 并形成粒径足 够小的 W/0性乳状液液滴, 提高本发明实施例呋虫胺可分散油悬浮剂的稳定性。
[0026] 作为优选, 步骤 c)高速搅拌的转速在 500〜 lOOOOrpm以上; 搅拌时间在 0.5h以上 。 当以大于 lOOOOrpm的转速高速搅拌 0.5h时, 乳化效果最优, 且 W/0性乳状液体 系较为稳定, 不易出现颗粒沉降分层等情况。
[0027] 呋虫胺水剂加入混合油剂的线速度过大容易造成剪切乳化不充分, 使得液滴粒 径偏大, 然而, 呋虫胺水剂加入混合油剂的线速度过小又会降低生产效率。
[0028] 作为优选, 步骤 c)中呋虫胺水剂加入混合油剂的线速度为 10〜 50m/min。
[0029] 呋虫胺的水溶性较差, 当温度低于 50°C时, 其在水中的溶解度较低, 溶解呋虫 胺需要加入更多的水, 水量过大容易造成本发明实施例可分散油悬浮剂过稠, 且导致液滴粒径过大, 降低 W/0性乳状液的稳定性。
[0030] 作为优选, 步骤 a)加热溶解的温度为 50〜 80°C。
[0031] 在乳化过程中, 水的用量过多, 容易导致破乳、 液滴大、 体系变稠等问题, 当 水和第一乳化剂的质量比为(5〜 15):(8〜 12)时, 可避免由于水分过多导致的破乳 、 液滴过大和体系变稠等问题, 保证制剂的稳定性和粒径大小, 进而保证液滴 内的呋虫胺微粒超细化。 当水和第一乳化剂的质量比大于 15:8时, W/0性乳状液 过稠, 液滴粒径过大, 稳定性降低。
[0032] 作为优选, 呋虫胺、 水、 第一乳化剂和分散剂的质量比为(5〜 30):(5〜 15):(8〜 1 2):(2〜 4)。
[0033] 进一步的, 混合油剂和呋虫胺水剂的质量比为 1:(0.1〜 1), 利于形成 W/0乳液, 保证水乳化完全, 得到纳米级粒子。
[0034] 在本发明实施例中, 步骤 b)还包括加入: 加入第二活性成分、 抗氧化剂和 pH调 节剂;
[0035] 第二活性成分、 抗氧化剂、 pH调节剂、 第二乳化剂和增稠剂的质量比优选为 1:
(0〜 2):(0〜 0.5):(0.1〜 10):(0.1〜 2)。
[0036] 在一些优选实施例中, 步骤 b)中还同时加入: 第二活性成分、 抗氧化剂和 pH调 节剂; 第二活性成分、 抗氧化剂、 pH调节剂、 第二乳化剂和增稠剂的质量比为 1
:(0.1〜 2):(0.01〜 0.5):(0.1〜 10):(0.1〜 2)。
[0037] 在其他的优选实施例中, 步骤 b)中还同时加入: 第二活性成分和抗氧化剂; 第 二活性成分、 抗氧化剂、 第二乳化剂和增稠剂的质量比为 1:(0.1〜 2):(0.1〜 10):(0. 1〜 2);
[0038] 或者为: 步骤 b)中还同时加入: 第二活性成分和 pH调节剂; 第二活性成分、 p H调节剂、 第二乳化剂和增稠剂的质量比为 1:(0.01〜 0.5):(0.1〜 10):(0.1〜 2)。
[0039] 进一步的, 本发明实施例的第二活性成分优选为甲氨基阿维菌素苯甲酸盐、 阿 维菌素、 吡丙醚、 高效氯氟氰菊酯和毒死蜱中的任意一种。
[0040] 经过前期实验优化筛选, 甲氨基阿维菌素苯甲酸盐、 阿维菌素、 吡丙醚、 高效 氯氟氰菊酯和毒死蜱油溶性好, 可以溶于油基中, 且与呋虫胺具有协同增效作 用。
[0041] 添加抗氧化剂, 可以防止活性成分被空气氧化分解。 作为优选, 本发明实施例 的抗氧化剂优选为二丁基羟基甲苯、 丁基羟基茴香醚和特丁基对苯二酚中的一 种或多种。
[0042] 二丁基羟基甲苯、 丁基羟基茴香醚和特丁基对苯二酚具有较强的抗氧化能力, 且油溶性好, 能溶于油基中。
[0043] 部分活性成分在特定的 pH范围内稳定, 超出 pH范围容易分解。 作为优选, 本 发明实施例的 pH调节剂优选为盐酸、 冰醋酸和柠檬酸中的一种或多种。
[0044] 盐酸、 冰醋酸和柠檬酸具有较好的调酸作用, 且盐酸、 冰醋酸常温为流动性较 好的液体, 柠檬酸常温下为固体, 使用时方便量取使用, 便于操作。
[0045] 在本发明实施例中, 第一乳化剂和第二乳化剂各自独立地选自烷基苯磺酸盐、 二辛基磺基琥珀酸盐、 脂肪醇聚氧乙烯醚、 蓖麻油聚氧乙烯醚、 失水山梨醇聚 氧乙烯聚氧丙烯、 苯乙烯基苯基聚氧乙烯醚和苯乙烯苯酚甲醛树脂聚氧乙烯醚 中的一种或多种;
[0046] 第一乳化剂与第二乳化剂不同。
[0047] 进一步的, 第一乳化剂优选为烷基苯磺酸盐、 二辛基磺基琥珀酸盐、 脂肪醇聚 氧乙烯醚、 蓖麻油聚氧乙烯醚、 失水山梨醇聚氧乙烯聚氧丙烯、 苯乙烯基苯基 聚氧乙烯醚和苯乙烯苯酚甲醛树脂聚氧乙烯醚中的一种。
[0048] 第二乳化剂优选为烷基苯磺酸盐、 二辛基磺基琥珀酸盐、 脂肪醇聚氧乙烯醚、 蓖麻油聚氧乙烯醚、 失水山梨醇聚氧乙烯聚氧丙烯、 苯乙烯基苯基聚氧乙烯醚 和苯乙烯苯酚甲醛树脂聚氧乙烯醚中的一种或两种。
[0049] 在本发明实施例中, 分散剂选自木质素磺酸盐、 聚羧酸盐、 萘磺酸盐和聚氧乙 烯聚氧丙烯嵌段共聚物中的一种或多种。 木质素磺酸盐、 聚羧酸盐、 萘磺酸盐 和聚氧乙烯聚氧丙烯嵌段共聚物对呋虫胺具有较好的降黏分散效果, 且兼容性 好, 能与大部分乳化剂复配使用。
[0050] 在本发明实施例中, 增稠剂选自白炭黑、 凹凸棒土、 硅酸镁铝和有机膨润土中 的一种或多种。 白炭黑、 凹凸棒土、 硅酸镁铝和有机膨润土可以调节可分散油 悬浮剂的黏度, 形成三维网状结构, 稳定固体粒子, 进而延缓沉降。
[0051] 在本发明实施例中, 油基优选为三甲苯、 S-100(100号溶剂油)、 S-150(150号溶 剂油)、 S-20(X200号溶剂油)、 醋酸仲丁酯、 油酸甲酯、 松脂基植物油、 大豆油、 玉米油和矿物油中的一种或多种, 其性质稳定, 来源广, 黏度低, 安全性较高
[0052] 基于上述制备方法, 本发明还提供了一种呋虫胺可分散油悬浮剂, 为 W/0乳状 液, W/0乳状液的液滴内含有纳米级的呋虫胺结晶微粒;
[0053] 以其制备原材料为 100重量份计, 包括: 呋虫胺 5〜 30份; 第二活性成分 0〜 30 份; 乳化剂 8〜 20份; 分散剂 2〜 4份; 7]C5〜 15份; 增稠剂 0〜 3份; 抗氧化剂 0〜 1份; pH调节剂 0〜 0.3份; 油基补足; [0054] 第二活性成分选自甲氨基阿维菌素苯甲酸盐、 阿维菌素、 吡丙醚、 高效氯氟氰 菊酯和毒死蜱中的任意一种。
[0055] 进一步的, 本发明实施例 W/0乳状液中液滴内的呋虫胺结晶微粒的粒径为 200n m〜 500nm。
[0056] 进一步的, 乳化剂选自烷基苯磺酸盐、 二辛基磺基琥珀酸盐、 脂肪醇聚氧乙烯 醚、 蓖麻油聚氧乙烯醚、 失水山梨醇聚氧乙烯聚氧丙烯、 苯乙烯基苯基聚氧乙 烯醚和苯乙烯苯酚甲醛树脂聚氧乙烯醚中的一种或或多种; 和 /或
[0057] 分散剂选自木质素磺酸盐、 聚羧酸盐、 萘磺酸盐和聚氧乙烯聚氧丙烯嵌段共聚 物中的一种或多种; 和 /或
[0058] 增稠剂选自白炭黑、 凹凸棒土、 硅酸镁铝和有机膨润土中的一种或多种; 和 / 或
[0059] 抗氧化剂选自二丁基羟基甲苯、 丁基羟基茴香醚和特丁基对苯二酚中的一种或 多种; 和 /或
[0060] pH调节剂选自盐酸、 冰醋酸和柠檬酸中的一种或多种; 和 /或
[0061] 油基选自三甲苯、 S-100、 S-150、 S-200、 醋酸仲丁酯、 油酸甲酯、 松脂基植物 油、 大豆油、 玉米油和矿物油中的一种或多种。
[0062] 为了使本发明要解决的技术问题、 技术方案及有益效果更加清楚明白, 以下结 合具体实施例, 对本发明进行进一步详细说明。 应当理解, 此处所描述的具体 实施例仅仅用以解释本发明, 并不用于限定本发明。
[0063] 为了说明本发明所述的技术方案, 下面通过具体实施例来进行说明。
[0064] 实施例一 ·:
[0065] 本实施例提供了一种呋虫胺可分散油悬浮剂, 其配方如下表 1 :
[0066] 表 1 :
[] [表 1]
Figure imgf000009_0002
[0067] 其制备包括以下步骤:
[0068] S11、 将呋虫胺和去离子水混合, 在 lOOOrpm搅拌下加热至 56°C, 使得呋虫胺完 全溶解于去离子水中; 加入第一乳化剂和分散剂继续搅拌, 得到呋虫胺水剂; [0069] S12、 将第二乳化剂、 增稠剂和油基混合, 在 800rpm下机械搅拌至均匀, 得到 混合油剂;
[0070] S13、 在 lOOOOrpm下高速搅拌, 将步骤 S11的呋虫胺水剂按
Figure imgf000009_0001
的线速度滴 加入步骤 S12的混合油剂中持续搅拌, 得到含 5%呋虫胺可分散油悬浮剂。
[0071] 实施例二:
[0072] 本实施例提供了一种呋虫胺可分散油悬浮剂, 其配方如下表 2:
[0073] 表 2
[] [表 2]
Figure imgf000010_0001
[0074] 其制备包括以下步骤:
[0075] S21、 将呋虫胺和去离子水混合, 在 500rpm搅拌下加热至 56°C, 使得呋虫胺完 全溶解于去离子水中; 加入第一乳化剂和分散剂继续搅拌, 得到呋虫胺水剂; [0076] S22、 将第二活性成分、 第二乳化剂、 增稠剂、 抗氧化剂和油基混合, 在 1000r pm下机械搅拌至均匀, 得到混合油剂;
[0077] S23、 在 8000rpm下高速搅拌, 将步骤 S21的呋虫胺水剂按 30m/min的线速度滴 加入步骤 S22的混合油剂中持续搅拌, 得到含 6%呋虫胺 ·甲氨基阿维菌素苯甲酸 盐可分散油悬浮剂。
[0078] 实施例三:
[0079] 本实施例提供了一种呋虫胺可分散油悬浮剂, 其配方如下表 3:
[0080] 表 3
[] [表 3]
Figure imgf000011_0001
[0081] 其制备包括以下步骤:
[0082] S31、 将呋虫胺和溶剂混合, 在 500rpm搅拌下加热至 58°C, 使得呋虫胺完全溶 解于去离子水中; 加入第一乳化剂和分散剂继续搅拌, 得到呋虫胺水剂;
[0083] S32、 将第二乳化剂、 增稠剂和油基混合, 在 700rpm下机械搅拌至均匀, 得到 混合油剂;
[0084] S33、 在 lOOOOrpm下高速搅拌, 将步骤 S31的呋虫胺水剂按 50m/min的线速度滴 加入步骤 S32的混合油剂中, 得到含 10%呋虫胺可分散油悬浮剂。
[0085] 实施例四:
[0086] 本实施例提供了一种呋虫胺可分散油悬浮剂, 其配方如下表 4:
[0087] 表 4
[]
[表 4]
Figure imgf000012_0001
[0088] 其制备包括以下步骤:
[0089] S41、 将呋虫胺和溶剂混合, 在 lOOOrpm搅拌下加热至 58°C, 使得呋虫胺完全溶 解于去离子水中; 加入第一乳化剂和分散剂继续搅拌, 得到呋虫胺水剂;
[0090] S42、 将第二活性成分、 第二乳化剂、 增稠剂、 抗氧化剂和油基混合, 在 600rp m下机械搅拌至均匀, 得到混合油剂;
[0091] S43、 在 8000rpm高速搅拌下, 将步骤 S41的呋虫胺水剂按 40m/min的线速度滴 加入步骤 S42的混合油剂中持续搅拌, 得到含 12%呋虫胺 ·阿维菌素可分散油悬浮 剂。
[0092] 实施例五:
[0093] 本实施例提供了一种呋虫胺可分散油悬浮剂, 其配方如下表 5:
[0094] 表 5
[] [表 5]
Figure imgf000013_0001
[0095] 其制备包括以下步骤:
[0096] S51、 将呋虫胺和溶剂混合, 在 9000rpm搅拌下加热至 58°C, 使得呋虫胺完全溶 解于去离子水中; 加入第一乳化剂和分散剂继续搅拌, 得到呋虫胺水剂;
[0097] S52、 将第二乳化剂、 增稠剂和油基混合, 在 lOOOrpm下机械搅拌至均匀, 得到 混合油剂;
[0098] S53、 在 20000rpm下高速搅拌, 将步骤 S31的呋虫胺水剂按 30m/min的线速度滴 加入步骤 S32的混合油剂中, 得到含 15%呋虫胺可分散油悬浮剂。
[0099] 实施例六:
[0100] 本实施例提供了一种呋虫胺可分散油悬浮剂, 其配方如下表 6:
[0101] 表 6
[] [表 6]
Figure imgf000014_0001
[0102] 其制备包括以下步骤:
[0103] S61、 将呋虫胺和溶剂混合, 在 700rpm搅拌下加热至 58°C, 使得呋虫胺完全溶 解于去离子水中; 加入第一乳化剂和分散剂继续搅拌, 得到呋虫胺水剂;
[0104] S62、 将第二活性化合物、 第二乳化剂、 增稠剂和油基混合, 在 600rpm机械搅 拌至均匀, 得到混合油剂;
[0105] S63、 在 lOOOOrpm高速搅拌下, 将步骤 S61的呋虫胺水剂按 40m/min的线速度滴 加入步骤 S62的混合油剂中, 得到含 20%呋虫胺 ·吡丙醚可分散油悬浮剂。
[0106] 实施例七:
[0107] 本实施例提供了一种呋虫胺可分散油悬浮剂, 其配方如下表 7 :
[0108] 表 7
[] [表 7]
Figure imgf000015_0001
[0109] 其制备包括以下步骤:
[0110] S71、 将呋虫胺和溶剂混合, 在 500rpm搅拌下加热至 62°C, 使得呋虫胺完全溶 解于去离子水中; 加入第一乳化剂和分散剂继续搅拌, 得到呋虫胺水剂;
[0111] S72、 将第二乳化剂、 增稠剂和油基混合, 在 700rpm下机械搅拌至均匀, 得到 混合油剂;
[0112] S73、 在 20000rpm高速搅拌下, 将步骤 S71的呋虫胺水剂按 30m/min的线速度滴 加入步骤 S72的混合油剂中, 得到含 20%呋虫胺可分散油悬浮剂。
[0113] 实施例八:
[0114] 本实施例提供了一种呋虫胺可分散油悬浮剂, 其配方如下表 8 :
[0115] 表 8
[] [表 8]
Figure imgf000016_0001
[0116] 其制备包括以下步骤:
[0117] S81、 将呋虫胺和溶剂混合, 在 500rpm搅拌下加热至 62°C, 使得呋虫胺完全溶 解于去离子水中; 加入第一乳化剂和分散剂继续搅拌, 得到呋虫胺水剂;
[0118] S82、 将第二活性化合物、 第二乳化剂、 增稠剂、 pH调节剂和油基混合, 在 10
OOrpm下机械搅拌至均匀, 得到混合油剂;
[0119] S83、 在 lOOOOrpm高速搅拌下, 将步骤 S81的呋虫胺水剂按 20m/min的线速度滴 加入步骤 S82的混合油剂中, 得到含 24%呋虫胺 ·高效氯氟氰菊酯可分散油悬浮剂
[0120] 实施例九:
[0121] 本实施例提供了一种呋虫胺可分散油悬浮剂, 其配方如下表 9:
[0122] 表 9
[] [表 9]
Figure imgf000017_0001
[0123] 其制备包括以下步骤:
[0124] S91、 将呋虫胺和去离子水混合, 在 500rpm搅拌下加热至 70°C, 使得呋虫胺完 全溶解于去离子水中; 加入第一乳化剂和分散剂继续搅拌, 得到呋虫胺水剂; [0125] S92、 将第二乳化剂、 增稠剂和油基混合, 在 600rpm下机械搅拌至均匀, 得到 混合油剂;
[0126] S93、 在 20000rpm高速搅拌下, 将步骤 S91的呋虫胺水剂按 40m/min的线速度滴 加入步骤 S92的混合油剂中, 得到含 25%呋虫胺可分散油悬浮剂。
[0127] 实施例十:
[0128] 本实施例提供了一种呋虫胺可分散油悬浮剂, 其配方如下表 10:
[0129] 表 10
[] [表 10]
Figure imgf000018_0001
[0130] 其制备包括以下步骤:
[0131] S101、 将呋虫胺和去离子水混合, 在 700rpm搅拌下加热至 70°C, 使得呋虫胺完 全溶解于去离子水中; 加入第一乳化剂和分散剂继续搅拌, 得到呋虫胺水剂; [0132] S102、 将第二活性成分、 第二乳化剂、 增稠剂和油基混合, 在 900rpm下机械搅 拌至均匀, 得到混合油剂;
[0133] S103、 在 20000rpm高速搅拌下, 将步骤 S 101的呋虫胺水剂滴加入步骤 S 102的 混合油剂中, 得到含 30%呋虫胺 ·吡丙醚可分散油悬浮剂。
[0134] 实施例十一:
[0135] 本实施例提供了一种呋虫胺可分散油悬浮剂, 其配方如下表 11 :
[0136] 表 11
[] [表 11]
Figure imgf000019_0001
[0137] 其制备包括以下步骤:
[0138] Si l l、 将呋虫胺和去离子水混合, 在 700rpm搅拌下加热至 70°C, 使得呋虫胺完 全溶解于去离子水中; 加入第一乳化剂和分散剂继续搅拌, 得到呋虫胺水剂; [0139] S112、 将第二乳化剂、 增稠剂和油基混合, 在 900rpm下机械搅拌至均匀, 得到 混合油剂;
[0140] S113、 在 15000rpm高速搅拌下, 将步骤 Si l l的呋虫胺水剂按 50m/min的线速度 滴加入步骤 S112的混合油剂中, 得到含 30%呋虫胺可分散油悬浮剂。
[0141] 实施例十二:
[0142] 本实施例提供了一种呋虫胺可分散油悬浮剂, 其配方如下表 12:
[0143] 表 12
[] [表 12]
Figure imgf000020_0001
[0144] 其制备包括以下步骤:
[0145] S121、 将呋虫胺和去离子水混合, 在 lOOOrpm搅拌下加热至 65°C, 使得呋虫胺 完全溶解于去离子水中; 加入第一乳化剂和分散剂继续搅拌, 得到呋虫胺水剂
[0146] S122、 将第二活性成分、 第二乳化剂、 增稠剂和油基混合, 在 900rpm下机械搅 拌至均匀, 得到混合油剂;
[0147] S123、 在 lOOOOrpm高速搅拌下, 将步骤 S121的呋虫胺水剂按 40m/min的线速度 滴加入步骤 S122的混合油剂中, 得到含 30%呋虫胺 ·毒死蜱可分散油悬浮剂。
[0148] 实施例十三:
[0149] 本实施例提供了一种呋虫胺可分散油悬浮剂, 其配方如下表 13:
[0150] 表 13
[] [表 13]
Figure imgf000021_0001
[0151] 其制备包括以下步骤:
[0152] S131、 将呋虫胺和去离子水混合, 在 lOOOrpm搅拌下加热至 60°C, 使得呋虫胺 完全溶解于去离子水中; 加入第一乳化剂和分散剂继续搅拌, 得到呋虫胺水剂
[0153] S132、 将第二活性成分、 第二乳化剂、 增稠剂和油基混合, 在 700rpm下机械搅 拌至均匀, 得到混合油剂;
[0154] S133、 在 lOOOOrpm高速搅拌下, 将步骤 S131的呋虫胺水剂按 30m/min的线速度 滴加入步骤 S132的混合油剂中, 得到含 40%呋虫胺 ·毒死蜱可分散油悬浮剂。
[0155] 对比例一:
[0156] 10%呋虫胺可分散油悬浮剂, 采用砂磨法制备, 配方如下:
[0157] 按重量百分比 100%计, 称取 10%呋虫胺、 聚羧酸盐 2%、 苯乙烯基酚聚氧乙烯 醚 8%、 烷基苯磺酸盐 4%、 蓖麻油聚氧乙烯醚 3%、 有机膨润土 2%、 白炭黑 2%
、 油酸甲酯补足 100%。 [0158] 制备方法: 将上述组分充分混合后置于砂磨机中研磨分散, 砂磨至粒径为 5pm 左右, 再过滤后即得 10%呋虫胺可分散油悬浮剂。
[0159] 对比例二:
[0160] 20%呋虫胺可分散油悬浮剂, 采用砂磨法制备, 配方如下:
[0161] 按重量百分比 100%计, 称取 20%呋虫胺、 萘磺酸盐 2%、 聚氧乙烯聚氧丙烯嵌 段共聚物 2%、 脂肪醇聚氧乙烯醚 8%、 山梨醇聚氧乙醚 4%、 烷基苯磺酸盐 3%
、 有机膨润土 1%、 白炭黑 1%、 大豆油 100%。
[0162] 制备方法: 将上述组分充分混合后置于砂磨机中研磨分散, 砂磨至粒径为 5pm 左右, 再过滤后即得 20%呋虫胺可分散油悬浮剂。
[0163] 泖 I试例:
[0164] 取实施例 1〜 13的呋虫胺可分散油悬浮剂进行稳定性测试, 包括热贮存测试和 冷冻贮存测试, 分别在 54°C条件下贮存 14天以及在 -5°C条件下贮存 7天后, 观察 贮后外观、 悬浮率、 分散性、 粒径。
[0165] 其中, 以对比例 1和对比例 2分别得到的 10%呋虫胺可分散油悬浮剂和 20%呋虫 胺可分散油悬浮剂作为阳性参照物进行对比。
[0166] 表 14和表 15为测试结果, 如结果所示, 本发明实施例的呋虫胺可分散油悬浮剂 的外观均一, 流动性好, 冷热贮稳定性合格。 与阳性参照物进行对比, 本发明 实施例的呋虫胺可分散油悬浮剂的贮存稳定性优于砂磨法制备的呋虫胺可分散 油悬浮剂, 具有优良的冷热贮稳定性, 粒径、 悬浮率等项目指标也优于砂磨法 制备的呋虫胺可分散油悬浮剂。
[0167] 表 14
[]
[0168] 表 15
Figure imgf000023_0001
[0169] (接上表 15) [0170] 以上所述实施例仅用以说明本发明的技术方案, 而非对其限制; 尽管参照前述 实施例对本发明进行了详细的说明, 本领域的普通技术人员应当理解: 其依然 可以对前述各实施例所记载的技术方案进行修改, 或者对其中部分技术特征进 行等同替换; 而这些修改或者替换, 并不使相应技术方案的本质脱离本发明各 实施例技术方案的精神和范围, 均应包含在本发明的保护范围之内。

Claims

权利要求书
[权利要求 1] 一种呋虫胺可分散油悬浮剂的制备方法, 其特征在于, 包括: a)在加 热条件下, 将呋虫胺、 第一乳化剂、 分散剂和水混合, 溶解, 得到呋 虫胺水剂; b)将第二乳化剂、 增稠剂和油基混匀, 得到混合油剂; c) 在高速搅拌状态下, 将步骤 a)的呋虫胺水剂加入步骤 b)的混合油剂中 , 乳化得到 W/0乳状液。
[权利要求 2] 如权利要求 1所述的制备方法, 其特征在于, 步骤 c)所述高速搅拌的 转速在 500〜 lOOOOrpm以上; 搅拌时间在 0.5h以上。
[权利要求 3] 如权利要求 1所述的制备方法, 其特征在于, 步骤 a)所述加热溶解的 温度为 50〜 80°C。
[权利要求 4] 如权利要求 1至 3任一项所述的制备方法, 其特征在于, 所述呋虫胺、
7]c、 第一乳化剂和分散剂的质量比为(5〜 30):(5〜 15):(8〜 12):(2〜 4)。
[权利要求 5] 如权利要求 1至 3任一项所述的制备方法, 其特征在于, 所述混合油剂 和所述呋虫胺水剂的质量比为 1:(0.1〜 1)。
[权利要求 6] 如权利要求 1至 3任一项所述的制备方法, 其特征在于, 步骤 b)还包括
: 加入第二活性成分、 抗氧化剂和 pH调节剂; 所述第二活性成分、 抗氧化剂、 pH调节剂、 第二乳化剂和增稠剂的质量比为 1:(0〜 2):(0〜 0.5):(0.1〜 10):(0.1〜 2)。
[权利要求 7] 如权利要求 6所述的制备方法, 其特征在于, 所述第二活性成分选自 甲氨基阿维菌素苯甲酸盐、 阿维菌素、 吡丙醚、 高效氯氟氰菊酯和毒 死蜱中的任意一种; 和 /或所述抗氧化剂选自二丁基羟基甲苯、 丁基 羟基茴香醚和特丁基对苯二酚中的一种或多种; 和 /或所述 pH调节剂 选自盐酸、 冰醋酸和柠檬酸中的一种或多种。
[权利要求 8] 如权利要求 1至 3任一项所述的制备方法, 其特征在于, 所述第一乳化 剂和第二乳化剂各自独立地选自烷基苯磺酸盐、 二辛基磺基琥珀酸盐 、 脂肪醇聚氧乙烯醚、 蓖麻油聚氧乙烯醚、 失水山梨醇聚氧乙烯聚氧 丙烯、 苯乙烯基苯基聚氧乙烯醚和苯乙烯苯酚甲醛树脂聚氧乙烯醚中 的一种或多种; 所述第一乳化剂与第二乳化剂不同。
[权利要求 9] 如权利要求 1至 3任一项所述的制备方法, 其特征在于, 所述分散剂选 自木质素磺酸盐、 聚羧酸盐、 萘磺酸盐和聚氧乙烯聚氧丙烯嵌段共聚 物中的一种或多种; 和 /或所述增稠剂选自白炭黑、 凹凸棒土、 硅酸 镁铝和有机膨润土中的一种或多种; 和 /或所述油基选自三甲苯、 S-1 00、 S-150、 S-200、 醋酸仲丁酯、 油酸甲酯、 松脂基植物油、 大豆油 、 玉米油和矿物油中的一种或多种。
[权利要求 10] 一种呋虫胺可分散油悬浮剂, 其特征在于, 为 W/0乳状液, 所述 W/0 乳状液的液滴内含有纳米级的呋虫胺结晶微粒; 以其制备原材料为 10 0重量份计, 包括: 呋虫胺 5〜 30份; 第二活性成分 0〜 30份; 乳化剂 8 〜 20份; 分散剂 2〜 4份; 7]C5〜 15份; 增稠剂 0〜 3份; 抗氧化剂 0〜 1 份; pH调节剂 0〜 0.3份; 油基补足。
PCT/CN2019/105168 2018-10-15 2019-09-10 一种呋虫胺可分散油悬浮剂及其制备方法 WO2020078145A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2019360278A AU2019360278A1 (en) 2018-10-15 2019-09-10 Dinotefuran oil-based suspension concentrate and preparation method therefor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201811199895.0 2018-10-15
CN201811199895.0A CN109169646B (zh) 2018-10-15 2018-10-15 一种呋虫胺可分散油悬浮剂及其制备方法

Publications (1)

Publication Number Publication Date
WO2020078145A1 true WO2020078145A1 (zh) 2020-04-23

Family

ID=64945212

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/105168 WO2020078145A1 (zh) 2018-10-15 2019-09-10 一种呋虫胺可分散油悬浮剂及其制备方法

Country Status (3)

Country Link
CN (1) CN109169646B (zh)
AU (1) AU2019360278A1 (zh)
WO (1) WO2020078145A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115104620A (zh) * 2021-08-13 2022-09-27 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

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109169646B (zh) * 2018-10-15 2020-12-29 深圳诺普信农化股份有限公司 一种呋虫胺可分散油悬浮剂及其制备方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007042152A1 (de) * 2005-10-11 2007-04-19 Bayer Cropscience Ag Suspensionskonzentrate auf ölbasis
CN103766386A (zh) * 2014-01-26 2014-05-07 江西农业大学 一种含有呋虫胺和吡唑醚菌酯的悬浮种衣剂及其制备方法
CN104126602A (zh) * 2014-08-18 2014-11-05 陕西上格之路生物科学有限公司 一种含有吡蚜酮和呋虫胺的可分散油悬浮剂
CN106359440A (zh) * 2016-08-26 2017-02-01 江苏克胜作物科技有限公司 一种呋虫胺可分散油悬浮剂及其制备方法
CN109169646A (zh) * 2018-10-15 2019-01-11 深圳诺普信农化股份有限公司 一种呋虫胺可分散油悬浮剂及其制备方法
CN109221226A (zh) * 2018-10-15 2019-01-18 深圳诺普信农化股份有限公司 一种用于飞防的呋虫胺可分散油悬浮剂及其制备方法
CN109315420A (zh) * 2018-10-15 2019-02-12 深圳诺普信农化股份有限公司 一种呋虫胺油悬浮热雾剂及其制备方法
CN109463392A (zh) * 2018-10-15 2019-03-15 深圳诺普信农化股份有限公司 一种呋虫胺油基种衣剂及其制备方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102057941A (zh) * 2011-01-19 2011-05-18 青岛东生药业有限公司 含呋虫胺的杀虫复配组合物
EP2849563B1 (de) * 2012-05-16 2020-01-22 Bayer CropScience AG Insektizide wasser-in-öl (w/o) formulierung

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007042152A1 (de) * 2005-10-11 2007-04-19 Bayer Cropscience Ag Suspensionskonzentrate auf ölbasis
CN103766386A (zh) * 2014-01-26 2014-05-07 江西农业大学 一种含有呋虫胺和吡唑醚菌酯的悬浮种衣剂及其制备方法
CN104126602A (zh) * 2014-08-18 2014-11-05 陕西上格之路生物科学有限公司 一种含有吡蚜酮和呋虫胺的可分散油悬浮剂
CN106359440A (zh) * 2016-08-26 2017-02-01 江苏克胜作物科技有限公司 一种呋虫胺可分散油悬浮剂及其制备方法
CN109169646A (zh) * 2018-10-15 2019-01-11 深圳诺普信农化股份有限公司 一种呋虫胺可分散油悬浮剂及其制备方法
CN109221226A (zh) * 2018-10-15 2019-01-18 深圳诺普信农化股份有限公司 一种用于飞防的呋虫胺可分散油悬浮剂及其制备方法
CN109315420A (zh) * 2018-10-15 2019-02-12 深圳诺普信农化股份有限公司 一种呋虫胺油悬浮热雾剂及其制备方法
CN109463392A (zh) * 2018-10-15 2019-03-15 深圳诺普信农化股份有限公司 一种呋虫胺油基种衣剂及其制备方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115104620A (zh) * 2021-08-13 2022-09-27 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
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

Also Published As

Publication number Publication date
AU2019360278A1 (en) 2021-01-07
CN109169646B (zh) 2020-12-29
CN109169646A (zh) 2019-01-11

Similar Documents

Publication Publication Date Title
CN109221226B (zh) 一种用于飞防的呋虫胺可分散油悬浮剂及其制备方法
WO2020078145A1 (zh) 一种呋虫胺可分散油悬浮剂及其制备方法
JP3855203B2 (ja) 乳化分散剤及びこれを用いた乳化分散方法並びに乳化物
CN101220228B (zh) 一种超声波制备稳定的纳米级水性颜料分散液的方法
WO2020042730A1 (zh) 一种含联苯类化合物的液体制剂及其应用
JPH06254373A (ja) 球状多孔性セルロース微粒子およびその製法
CN109329294A (zh) 以油酸甲酯为分散介质的烟嘧·莠去津油悬浮剂及其制备方法
JP2010104946A (ja) 逆ベシクルを用いて形成された油中水(w/o)型エマルション
CN105557742A (zh) 一种卫生杀虫剂纳米乳液及其制备方法
CN109315420B (zh) 一种呋虫胺油悬浮热雾剂及其制备方法
Chen et al. Flocculation of polymer stabilized nanocrystal suspensions to produce redispersible powders
CN109463392B (zh) 一种呋虫胺油基种衣剂及其制备方法
CN115281188B (zh) 一种含水溶性除草剂的悬浮剂制备方法及应用
JPS61180701A (ja) 水性懸濁状殺生剤組成物およびその製造法
JPS60104002A (ja) 安定なる水中懸濁状農薬製剤
CN109329276B (zh) 呋虫胺悬乳剂及其制备方法
CN113462171A (zh) 相变降温助剂母粒制备及其在加热不燃烟降温段的应用
KR100421438B1 (ko) 실리콘 소포제 조성물
CN109329858B (zh) 一种食品级水包油包水型微乳液及制备方法
CN113508808A (zh) 可分散油悬浮剂及其制备方法
JPH02277542A (ja) 水性懸濁状組成物
JPS61141613A (ja) 貯蔵安定性の良好な微粒子シリカスラリ−及びその製造方法
JP3239326U (ja) 機能性素材用超微粒子化装置
CN115812730B (zh) 一种含联苯肼酯的纳米悬浮剂及其制备方法
JP4429613B2 (ja) 濃縮ボルドー液の製造方法および濃縮ボルドー液組成物

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19872391

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2019360278

Country of ref document: AU

Date of ref document: 20190910

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19872391

Country of ref document: EP

Kind code of ref document: A1