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A kind of microemulsion with cyhalofop-ethyl as active ingredient and preparation method thereof

A technology of cyhalofop-butyl and active ingredients, applied in the field of microemulsion and its preparation, can solve the problems of not providing stability and preventive effect, difficult to grasp physical stability, easy to appear phase inversion phenomenon, etc., to achieve enhanced physical stability The effect of high transparency, large temperature range and low cost

Active Publication Date: 2018-08-24
HUIZHOU YINNONG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Chinese patent application CN 101911933 discloses a cyhalofop-ethyl microemulsion and its preparation method. The microemulsion includes cyhalofop-ethyl, solvent, co-solvent, emulsifier and water, but does not provide experimental data on stability and control effect
The formula of cyhalofop-ethyl microemulsion is usually difficult to grasp its physical stability. The existing problems mainly include: (1) The emulsion or diluent formed after the microemulsion is diluted with water should be stored at too high or too low temperature and possible potential problems in use; (2) microemulsions with nonionic surfactants as the main component will produce cloud points or stratification; (3) phase inversion and crystallization are prone to occur

Method used

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  • A kind of microemulsion with cyhalofop-ethyl as active ingredient and preparation method thereof
  • A kind of microemulsion with cyhalofop-ethyl as active ingredient and preparation method thereof
  • A kind of microemulsion with cyhalofop-ethyl as active ingredient and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Cyhalofop-ethyl microemulsion comprises the following components and their mass percentages: 10% of cyhalofop-methyl, 16% of ethyl acetate, 18% of polyoxyethylene fatty acid ester, 2% of trisiloxane, 4% of glycerol, and The amount is water.

[0024] Preparation method: Dissolve cyhalofop-ethyl in a solvent. After the cyhalofop-ethyl is fully dissolved, add emulsifier, synergist and antifreeze while stirring. Add slowly and stir well to prepare a microemulsion with cyhalofop-ethyl as the active ingredient. The synergist is trisiloxane, the emulsifier is fatty acid polyoxyethylene ester, the solvent is ethyl acetate, and the antifreeze agent is glycerol.

Embodiment 2 to Embodiment 6

[0025] Example 2 to Example 6, and Comparative Example 1 to Comparative Example 2 were all prepared according to the preparation method of Example 1.

Embodiment 2

[0027] Cyhalofop-ethyl microemulsion includes the following components and their mass percentages: cyhalofop-ethyl 12%, ethanol 4%, n-butanol 14%, alkyl polyoxyethylene ether 6%, nonylphenol polyoxyethylene ether 8% , Azone 1%, propylene glycol 3%, and the balance is water.

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Abstract

The invention belongs to the technical field of pesticides and particularly relates to a microemulsion containing cyhalofop-butyl ester as an active ingredient and a preparation method thereof. The microemulsion containing cyhalofop-butyl ester comprises, by mass, 10 to 20% of cyhalofop-butyl ester, 10 to 20% of an emulsifier, 15 to 25% of a solvent, 0.5 to 2% of a synergist, 2 to 5% of an antifreezing agent and 35 to 55% of water. The microemulsion has good emulsion dispersity in water, good fluidity, moderate viscosity, a wide transparent temperature range and good heat storage stability, has significant effects of preventing weeds such as paspalum distichum and Echinochloa cruspavonis, has a small dosage, produces effects fast and improves a yield of paddy rice.

Description

technical field [0001] The invention belongs to the technical field of pesticides, in particular to a microemulsion with cyhalofop-methyl as an active ingredient and a preparation method thereof. Background technique [0002] The chemical name of cyhalofop-butyl (cyhalofop-butyl) is (R)-2-[4(4-cyano-2-fluorophenoxy)phenoxy]-butyl propionate, which is produced by American Dow Agricultural Sciences Developed by the company, it belongs to the aryloxyphenoxypropionic acid systemic conductive herbicide. Cyhalofop-methyl stops fatty acid synthesis by inhibiting acetyl coenzyme A carboxylase, cell growth and division cannot proceed normally, membrane system and other lipid-containing structures are destroyed, and finally causes plant death. In rice, cyhalofop-methyl can be rapidly degraded into a diacid state that is inactive to acetyl-CoA carboxylase, so it is highly safe for rice. Cyhalofop-ethyl is the only aryloxyphenoxypropionic acid herbicide with high safety to rice. Ther...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N25/04A01N25/22A01N39/04A01P13/00
CPCA01N25/04A01N25/22A01N39/04
Inventor 王爱臣
Owner HUIZHOU YINNONG TECH
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