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Compound weeding pesticide and preparation method thereof

A technology of pesticide and glufosinate-ammonium, which is applied in the field of compound herbicide pesticide and its preparation, can solve the problems of increased pesticide production cost, complicated pesticide formula, and limited synergistic effect, so as to improve the effect of weed control and excellent control effect. , to slow down the effects of drug resistance

Pending Publication Date: 2022-05-13
山东坤牛植物保护有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many types of synergists, such as alkyl glycosides, alkylphenol polyoxyethylene ethers, fatty amine polyoxyethylene ethers, and silicones. Their synergistic effects are limited and they need to be used in combination, making pesticides The formulation is complicated, which increases the production cost of pesticides

Method used

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  • Compound weeding pesticide and preparation method thereof
  • Compound weeding pesticide and preparation method thereof
  • Compound weeding pesticide and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Polyoxyethylene ether modified organonitrogen silicon compound is prepared by the following steps:

[0042] A. Add 0.1mol trimethylchlorosilane and 0.1mol anhydrous allyl acetate into a four-necked flask equipped with a condenser tube, a thermometer, a drying tube, and a stirring device, stir evenly, and then add them in four batches at room temperature 0.2g benzoyl peroxide, after the reaction temperature is stable, continue to stir for 30min, then add 100mL of anhydrous n-hexane and 0.2g potassium hydroxide, stir for 6h, stop the reaction, filter, and wash the filtrate with n-hexane to obtain epoxy Group-terminated siloxane;

[0043] B. Add 0.1mol epoxy-terminated siloxane, 20mL anhydrous methanol and 80mL ammonia water with a mass fraction of 25% into a sealed reaction vessel, stir at room temperature for 12h, and rotate at 30°C until the overflowing gas is neutral. Then add 0.1 mol of epoxy-terminated siloxane and 2 mL of methanol again, continue to stir the reacti...

Embodiment 2

[0046] Polyoxyethylene ether modified organonitrogen silicon compound is prepared by the following steps:

[0047] A. Add 0.1mol trimethylchlorosilane and 0.13mol anhydrous allyl acetate into a four-necked flask equipped with a condenser tube, a thermometer, a drying tube, and a stirring device, stir evenly, and then add them in four batches at room temperature 0.43g benzoyl peroxide, after the reaction temperature is stable, continue stirring for 30min, then add 200mL of anhydrous n-hexane and 0.54g potassium hydroxide, stir for 6h, stop the reaction, filter, and wash the filtrate with n-hexane to obtain epoxy Group-terminated siloxane;

[0048] B. Add 0.1mol epoxy-terminated siloxane, 40mL anhydrous methanol and 150mL ammonia water with a mass fraction of 25% into a sealed reaction vessel, stir at room temperature for 12 hours, and rotate at 30°C until the overflowing gas is neutral. Then add 0.1 mol of epoxy-terminated siloxane and 4 mL of methanol again, continue to stir ...

Embodiment 3

[0051] Synergists are made through the following steps:

[0052] The first step, grind and mix 24g of alkyl glucoside and 4g of anhydrous sodium acetate in a mortar, transfer to a three-neck flask, add 0.45mol of acetic anhydride, heat and reflux for 2h, pour the product into ice water at 0°C and stir to solidify , the solid was recrystallized twice with ethanol, and dried in vacuum to obtain acetylated alkyl glycosides. The alkyl glycosides were alkyl glycosides APG1214, which were purchased from Hubei Coward Chemical Co., Ltd.; and the alkyl glycosides were degreased and dehydrated after purchase. The specific operation is to put the alkyl glucoside and diethylene glycol dimethyl ether into the reaction bottle, stir for 30 minutes, heat up, vacuumize, and distill under reduced pressure to remove the residual fatty alcohol and part of the solvent in the alkyl glycoside to obtain the pretreated Alkyl glycoside; then add the pretreated alkyl glycoside to the reaction kettle, va...

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Abstract

The invention relates to a compound weeding pesticide and a preparation method thereof, and belongs to the technical field of pesticide compounding. The compound weeding pesticide comprises the following raw materials: an active component, a synergist, an organic solvent, an auxiliary agent and deionized water, the active ingredients comprise glufosinate-ammonium and fluoroglycofen-ethyl. The molecular structure of the synergist contains an alkyl glycoside structure, a polyoxyethylene ether structure and an organic silicon structure, the permeability, wettability and biodegradability of the synergist are enhanced due to the introduction of the alkyl glycoside structure, the hydrophilicity of the synergist is enhanced due to the introduction of the polyoxyethylene ether structure, the dispersion stability of an emulsion in water dosage form is promoted, and the synergistic effect of the synergist is improved. Due to the introduction of an organic silicon structure, the liquid surface tension of the synergist is reduced, the storage stability of an emulsion in water dosage form is improved, and due to the introduction of the synergist into a compound weeding pesticide, the control effect of the pesticide on weeds can be improved, and the effective dosage of the pesticide is reduced.

Description

technical field [0001] The invention belongs to the technical field of pesticide compounding, and in particular relates to a compound herbicidal pesticide and a preparation method thereof. Background technique [0002] Compound herbicidal pesticides are the combination of two or more active ingredients. While improving the weeding effect, it can also prolong the application period, reduce the dosage, reduce the damage of the pesticide, reduce the residue, and delay the occurrence and development of drug resistance. Positive characteristics such as development are the key technologies for the future development of green pesticides. [0003] In the pesticide compounding technology, the action mechanism, compatibility and action objects of active raw materials should be considered. In addition, the selection of pesticide formulations, the stability of pesticides, and the wetting effect on crops should also be considered. , and the scientific compatibility of various raw materi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N57/20A01N37/48A01N25/30A01P13/00C08G65/28C07H1/00C07H15/04C07F7/08
CPCA01N57/20A01N37/48A01N25/30C08G65/2639C07H1/00C07H15/04C07F7/081C07F7/083
Inventor 张睿茜李向阳张吉骜张学军韩春志
Owner 山东坤牛植物保护有限公司
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