Preparation and application of trinexapac-ethyl emulsion in water

A technology of ester-water emulsion and water-emulsion, which is applied in the field of preparation of trinexapac-ethyl water-emulsion, can solve the problems of complex method, general preparation efficiency, unsuitability for high-efficiency and low-cost industrial production, and achieve simple process and good practicability Effect

Pending Publication Date: 2020-11-24
ANHUI SIDA PESTICIDE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the method of combining diethyl maleate and acetone is still relatively complicated, and the preparation efficiency is average, so it is not suitable for high-efficiency and low-cost industrial production.

Method used

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  • Preparation and application of trinexapac-ethyl emulsion in water

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preparation example Construction

[0031] The preparation method of the trinexapac-ethyl aqueous emulsion comprises the following raw materials in the mass fraction proportion: 12-25% of ethyl 3,5-dioxcyclohexyl carboxylate, 10-28% of cyclopropanecarboxylic acid, and 20% of non-polar organic solvent -30%, organic amine 25-30%, phosphorus trichloride: 8-13%, catalyst: 2-5%.

[0032] The non-polar organic solvent is a mixture of toluene, acetonitrile, dimethylformamide and N,N-dimethylaniline; the organic amine is a mixture of dimethylamine, diethylamine, dibutylamine, trimethylamine and triethylamine .

Embodiment 1

[0034] Raw materials: 15% ethyl 3,5-dioxcyclohexyl carboxylate, 20% cyclopropanecarboxylic acid, 22% non-polar organic solvent, 28% organic amine, 10% phosphorus trichloride, and 5% catalyst.

[0035] Wherein the mass percentage component of non-polar organic solvent is:

[0036] Toluene 50%;

[0037] Acetonitrile 25%;

[0038] Dimethylformamide 11%;

[0039] N,N-Dimethylaniline 14%.

[0040] Wherein the mass percentage of organic amine component is;

[0041] Dimethylamine 35%;

[0042] Diethylamine 20%;

[0043] Dibutylamine 14%;

[0044] Trimethylamine 15%;

[0045] Triethylamine 16%.

[0046] Based on the above raw material ratio, the specific raw material ratio process is:

[0047] The first step: Weigh the raw materials with the required mass fraction ratio in turn for later use;

[0048] The second step: Then add an appropriate amount of ethyl 3,5-dioxocyclohexylcarboxylate and cyclopropanecarboxylic acid into the reaction kettle, and the inside of the reaction...

Embodiment 2

[0053] Raw materials: 20% ethyl 3,5-dioxcyclohexyl carboxylate, 15% cyclopropanecarboxylic acid, 25% non-polar organic solvent, 25% organic amine, 10% phosphorus trichloride, and 5% catalyst.

[0054] Wherein the mass percentage component of non-polar organic solvent is:

[0055] Toluene 45%;

[0056] Acetonitrile 30%;

[0057] Dimethylformamide 11%;

[0058] N,N-Dimethylaniline 14%.

[0059] Wherein the mass percentage of organic amine component is;

[0060] Dimethylamine 35%;

[0061] Diethylamine 20%;

[0062] Dibutylamine 14%;

[0063] Trimethylamine 15%;

[0064] Triethylamine 16%.

[0065]Based on the above raw material ratio, the specific raw material ratio process is roughly the same as that in Example 1, wherein the molar mass ratio of ethyl 3,5-dioxcyclohexylcarboxylate to cyclopropanecarboxylic acid in the reactor is 1:0.75 ; The molar mass ratio of ethyl 3,5-dioxcyclohexylcarboxylate to non-polar organic solvent is 1:1.25; the molar mass ratio of ethyl 3,5...

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Abstract

The invention discloses preparation and application of trinexapac-ethyl emulsion in water. During preparation, a proper quantity of 3,5-ethyl dioxocyclohexylcarboxylate and cyclopropanecarboxylic acidare added to a reactor, then a proper quantity of a nonpolar organic solvent and organic amine are added to the reactor, and phosphorus trichloride and a catalyst are added dropwise to the reactor. During the dropwise addtion of phosphorus trichloride and the catalyst, materials in the reactor need to be stirred, and then a mixed solution after reaction is washed with water to remove the nonpolarorganic solvent. By comparing data obtained from four embodiments, the preparation efficiency of trinexapac-ethyl prepared in the fourth embodiment is the highest, and is 78.5%, so that the best proportions of raw materials for preparing trinexapac-ethyl are as follows: 20% of 3,5-ethyl dioxocyclohexylcarboxylate, 20% of cyclopropanecarboxylic acid, 20% of the nonpolar organic solvent, 25% of organic amine, 10% of phosphorus trichloride and 5% of the catalyst. The process is simple and good in practicability.

Description

technical field [0001] The invention relates to a chemical emulsion, in particular to the preparation and application of a trinexapac-ethyl emulsion in water. Background technique [0002] Trinexapac-ethyl is a cyclohexane derivative with high-efficiency plant growth-regulating activity, and it can also be used as a herbicide. The anti-lodging agent overcomes the shortcomings of many other plant growth regulators such as weakened or unstable drug efficacy, high toxicity and high price due to the influence of soil quality, plants and application time. [0003] Trinexapac-ethyl is a cyclohexane carboxylic acid plant growth regulator. Since the structural formula of this substance contains two non-adjacent carbon-carbon double bonds, there are many cis and trans isomers. The configuration of trinexapac-ethyl is inverted under the action of external conditions, and trinexapac-ethyl is unstable under the conditions of ultraviolet rays, strong acids, and strong alkalis, and its ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/04A01N37/42A01P21/00A01P13/00C07C67/343C07C67/54C07C69/757
CPCA01N25/04A01N37/42C07C67/343C07C67/54C07C2601/02C07C2601/14C07C69/757
Inventor 徐年凤孙晓玲沈敏
Owner ANHUI SIDA PESTICIDE CHEM
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