Microcapsule suspension containing both difenoconazole and imidacloprid and preparation method thereof

A technology of imidacloprid and difenoconazole, which is applied in the field of compound pesticides, can solve the problems of inability to protect crops, insufficient insecticidal spectrum, and easy to produce drug resistance, and achieve low cost, pollution reduction, storage and transportation. and safe use

Inactive Publication Date: 2012-09-19
上海沪联生物药业(夏邑)股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since many pesticides are difficult to add into microcapsule suspensions, there are very few types of pesticides in microcapsule suspensions.
[0011] Insecticide varieties containing a single active ingredient often have different degrees of defects in the control of agricultural pests: continuous use is easy to produce resistance, the insecticidal spectrum is not wide enough, causing greater pollution to the environment, and cannot provide comprehensive protection for crops Wait

Method used

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  • Microcapsule suspension containing both difenoconazole and imidacloprid and preparation method thereof
  • Microcapsule suspension containing both difenoconazole and imidacloprid and preparation method thereof
  • Microcapsule suspension containing both difenoconazole and imidacloprid and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1: 5% difenoconazole imidacloprid microcapsule suspension

[0031] Weigh 0.5 g of difenoconazole and 4.5 g of imidacloprid in a three-necked flask equipped with a thermometer and a stirring device, first add 1 g of cyclohexanone to dissolve, then add 0.25 g of polypropyl polymethylene polyisocyanate, 0.25 1g of isopropyl myristate, 0.5g of butanediol and 0.5g of polyvinyl alcohol were stirred evenly to make an oily solution; Cut it off and add it to the above oily solution to react for 1 hour, then raise the temperature to 50°C, and carry out polymerization under stirring. After reacting for 2 hours, cool down to room temperature, then add 0.5g of ethylenediamine, and stir evenly to obtain 5% difenoconazole imidacloprid microcapsule suspension.

Embodiment 2

[0032] Example 2: 15% difenoconazole imidacloprid microcapsule suspension

[0033] Weigh 1 g of difenoconazole and 14 g of imidacloprid in a three-neck flask equipped with a thermometer and a stirring device, first add 10 g of xylene and 2 g of DMF to dissolve, then add 3 g of isopropyl myristate, 2 g of alkyl Diisocyanate, 0.5g suberic acid and 0.5g polyvinylpyrrolidone, stir well to prepare an oily solution: add 5g polyoxyethylene polyoxypropylene block copolymer, 0.5g gum arabic to 59.5g water and stir evenly to form an aqueous solution, Cut it off and add it to the above oily solution to react for 3 hours, then raise the temperature to 50°C, and carry out polymerization under stirring. After reacting for 2 hours, cool down to room temperature, then add 1g triethylenetetramine and 1g polyvinyl alcohol, and stir evenly to obtain 15% phenyl ether Mecloconazole imidacloprid microcapsule suspension.

Embodiment 3

[0034] Example 3: 25% difenoconazole imidacloprid microcapsule suspension

[0035] Weigh 1 g of difenoconazole and 24 g of imidacloprid in a three-necked flask equipped with a thermometer and a stirring device, first add 11 g of ethanol and 3 g of DMF to dissolve, then add 2 g of isopropyl myristate, 3 g of alkyl diacetate Isocyanate, 0.5g of suberic acid and 0.5g of polyvinylpyrrolidone were stirred evenly to prepare an oily solution: 5g of polyoxyethylene polyoxypropylene block copolymerization and 0.5g of polyvinyl alcohol were added to 48.5g of water and stirred evenly to form an aqueous solution. Cut it off and add it to the above oily solution to react for 3 hours, then raise the temperature to 50°C, polymerize under stirring, react for 2 hours and then cool down to room temperature, then add 0.5g triethanolamine and 0.5g sodium lignosulfonate, stir well to get 25% Difenoconazole imidacloprid microcapsule suspension.

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PUM

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Abstract

A microcapsule suspension containing both difenoconazole and imidacloprid mainly comprises difenoconazole, imidacloprid, a capsule material, a water-based monomer, a dispersant, a protecting agent, a core resolvent and water, and has the yield of more than 98 percent and the encapsulation rate of more than 95 percent. The microcapsule suspending agent is regularly spherical, has the particle diameter of 0.5-5 Mum, is similar to a common pesticide suspension in appearance and can be directly watered for spraying. Indoor and field pesticide effect tests show that compared with missible oil and a suspending agent, the microcapsule suspension containing the difenoconazole and imidacloprid has better preventing and curing effects on plant diseases and insect pests of wheat, corn, cotton and the like, has remarkably prolonged duration even though the toxic effects are not significantly different, and is lower in cost compared with the present missible oil and other preparation agents; and as water is taken as the dispersion medium, the consumption of organic solvents is low, the storage, transport and use are safe and environmental pollution is reduced.

Description

technical field [0001] The invention relates to a microcapsule suspension pesticide composition containing difenoconazole and imidacloprid and a preparation method, belonging to the technical field of compound pesticides. Background technique [0002] Difenoconazole (difenoconazole), chemical name: cis, trans-3-chloro-4-[4-methyl-2-1H-1,2,4-triazol-1-ylmethyl)-1, 3-Dipentan-2-yl)phenyl 4-chlorophenyl ether (cis, trans ratio is about 45:55), molecular formula: C 23 h 19 CIF 3 NO 3 . [0003] [0004] Difenoconazole is a systemic fungicide with protective and therapeutic effects. Product features: Difenoconazole is relatively safe among triazole fungicides. It is widely used in fruit trees, vegetables and other crops to effectively prevent and control scab, black pox, white rot, spotted leaf disease, and powdery mildew. , brown spot, rust, stripe rust, head blight, etc. [0005] Mechanism of action: Difenoconazole has protective, therapeutic and systemic activities, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N51/00A01N43/653A01N25/04A01N25/28A01P3/00A01P7/04
Inventor 司贤良
Owner 上海沪联生物药业(夏邑)股份有限公司
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