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Pyraclostrobin microcapsule suspending agent

A technology of microcapsule suspension and pyraclostrobin, which is applied in the field of pesticides, can solve the problems of non-registration in the prevention and treatment of rice diseases, high toxicity of aquatic animals, etc., and achieve the advantages of easy mastery of production technology, small investment in production equipment, and reduced toxicity Effect

Active Publication Date: 2014-04-23
SHAANXI SUNGER ROAD BIO SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the formulations of pyraclostrobin products that have been registered or are being registered in the Ministry of Agriculture are emulsifiable concentrates, suspension concentrates, and water-dispersible granules, which are still highly toxic to aquatic animals and have not been registered for the prevention and treatment of rice diseases, so they cannot be used on rice.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1: 35% pyraclostrobin microcapsule suspension

[0030] Weigh 35% pyraclostrobin original drug, dissolve it in 10% 150# solvent oil, add 1.5% Nongru 33# and 7% diphenylmethane diisocyanate, stir and mix evenly to form an oil phase; Aqueous vinyl alcohol solution was added into appropriate amount of water and stirred evenly to form a water phase; the oil phase and water phase were mixed, sheared and emulsified with a high-shear emulsifier at 10,000 rpm to form a uniform emulsion, and 1 Slowly and evenly add % glycerol into the emulsion, drop it in 80 minutes, react in a water bath at 30°C and stir at 400 rpm for 5 hours, heat up to 60°C and solidify for 3 hours, then add 2% xanthan gum aqueous solution, 1 % polycarboxylate dispersant and 4% ethylene glycol, adjust the pH to be neutral, supplement 100% by weight with deionized water, and obtain 35% pyraclostrobin microcapsule suspension.

[0031] Encapsulation rate ≥ 93%, particle size (0.45-2.0μm standard sieve) ...

Embodiment 2

[0033] Example 2: 20% pyraclostrobin microcapsule suspension

[0034] Weigh 20% pyraclostrobin original drug, dissolve it in 10% 150# solvent oil, add 1% Nongru 33# and 5% diphenylmethane diisocyanate, stir and mix evenly to form an oil phase; Aqueous vinyl alcohol solution was added into appropriate amount of water and stirred evenly to form a water phase; the oil phase and water phase were mixed, sheared and emulsified with a high-shear emulsifier at 10,000 rpm to form a uniform emulsion, and 1 % ethylenediamine was slowly and evenly added dropwise into the emulsion, and the dropwise addition was completed in 40 minutes. It was reacted in a water bath at 30°C and stirred at 400 rpm for 3 hours, and the temperature was raised to 60°C to solidify for 2 hours. Then, 3% xanthan gum aqueous solution, 2 % polycarboxylate dispersant, 1% lignosulfonate and 4% ethylene glycol, adjust the pH to be neutral, make up 100% by weight with deionized water, and you can get 20% pyraclostrobin...

Embodiment 3

[0037] Example 3: 10% pyraclostrobin microcapsule suspension

[0038] Weigh 10% pyraclostrobin original drug, dissolve it in 5% xylene, add 1% Nongru 1601# and 3% diphenylmethane diisocyanate, stir and mix evenly to form an oil phase; add 0.5% ethylenediamine Add 10% polyvinyl alcohol aqueous solution into an appropriate amount of water and stir to form a water phase; mix the oil phase and water phase, and use a high-shear emulsifier to shear and emulsify at 10,000 rpm to form a uniform emulsion. , React at 400 rpm for 3 hours, heat up to 60 ° C for 2 hours, then add 5% xanthan gum aqueous solution, 2% NNO and 4% ethylene glycol, adjust the pH to neutral, and make up 100 with deionized water % by weight, 10% pyraclostrobin microcapsule suspension can be obtained.

[0039]Encapsulation rate ≥ 97%, particle size (0.45-2.0μm standard sieve) ≥ 96%, suspension rate ≥ 90%, persistent foaming (after 1min) ≤ 13mL, dispersibility ≥ 90%, pH 6.8-7.2, The thermal storage stability is qu...

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PUM

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Abstract

The invention discloses a pyraclostrobin microcapsule suspending agent which consists of the following components in percentage by weight: 1 percent to 35 percent of pyraclostrobin, 3 percent to 15 percent of capsule core solvent, 2 percent to 20 percent of oily capsule wall material, 1 percent to 5 percent of aqueous capsule wall material, 1 percent to 10 percent of an emulsifier, 1 percent to 6 percent of a dispersant, 0.01 percent to 5 percent of an antifreezing agent, 0.01 percent to 1 percent of a pH modifier, 0.01 percent to 2 percent of a thickener and the balance of water. The pyraclostrobin microcapsule suspending agent disclosed by the invention can reduce toxicity for aquatic animals, prevents and treats rice diseases in rice fields, is safe for the aquatic animals, also improves safety for people, crops and the environment to a great degree, prolongs duration and improves stability of active ingredients.

Description

technical field [0001] The invention relates to an agricultural fungicide, in particular to a pyraclostrobin microcapsule suspension, which is composed of an active ingredient pyraclostrobin and an auxiliary agent, and belongs to the technical field of pesticides. Background technique [0002] Pyraclostrobin is a new broad-spectrum fungicide of methyl methoxyacrylate. By inhibiting the electron transfer between cytochrome b and c, thereby inhibiting the respiration of mitochondria, resulting in the germination of pathogenic spores and the growth of mycelium being hindered, eventually leading to cell death and taking effect. The medicine has the functions of protection, treatment and leaf osmosis conduction. [0003] The agent can be used for various crops such as wheat, peanut, rice, vegetables, fruit trees, tobacco, tea trees, ornamental plants, lawns, etc., to prevent and control leaf blight, rust, Powdery mildew, downy mildew, blight, anthracnose, scab, brown spot, blig...

Claims

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Application Information

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IPC IPC(8): A01N47/24A01N25/28A01N25/04A01P3/00
Inventor 杨子瑶郑敬敏冯建雄马强李明甫张崇斌乌小瑜
Owner SHAANXI SUNGER ROAD BIO SCI