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Clathrate of chloramine phosphate and cyclodextrin or its derivative and the prepn process

A cyclodextrin and derivative technology, which is applied in the field of inclusion complexes formed by chloramidophos and cyclodextrin or cyclodextrin derivatives and its preparation, can solve problems in the preservation of unfavorable pesticides, the prevention and control of pests, the decomposition of samples, and the Thermal decomposition, etc.

Inactive Publication Date: 2007-08-22
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the currently commercially available 30% chloramidophos EC is prone to precipitation during production and storage, and due to the presence of a certain proportion of methanol, the sample will decompose
In addition, there are hydroxyl groups and ether bonds in the molecular structure of chloramidophos, which will also degrade rapidly under conditions such as water, oxygen, and high temperature, which is not conducive to the preservation of pesticides and the control of pests.
The chloramidophos pesticide currently on the market has the disadvantage of thermal decomposition, and people try to solve the problem of the stability of the chloramidophos pesticide

Method used

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  • Clathrate of chloramine phosphate and cyclodextrin or its derivative and the prepn process
  • Clathrate of chloramine phosphate and cyclodextrin or its derivative and the prepn process
  • Clathrate of chloramine phosphate and cyclodextrin or its derivative and the prepn process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Take β-cyclodextrin to recrystallize twice and dry to constant weight at 110°C. Place β-cyclodextrin (1.135g, 1mmol) after drying to constant weight in a glass bowl, add a small amount of water to make it Make a paste; dissolve chloramine (577mg, 2mmol) in acetone (25ml). The acetone solution of chloramine phosphine was slowly added dropwise to the pasty cyclodextrin, and the dropwise addition was milled. The dropwise addition time was 1 hour, and after the dropwise addition was completed, milled for another 1 hour. After the milling is completed, the resulting product is placed in an oven and dried at 30°C for at least 3 hours. A small amount of organic solvent is used to remove the unincorporated chloramine, and the inclusion compound of chloramine and β-cyclodextrin can be obtained, and the product is a white powder.

Embodiment 2

[0046] Take β-cyclodextrin to recrystallize twice and dry to constant weight at 110°C. Place β-cyclodextrin (1.135g, 1mmol) after drying to constant weight in a glass bowl, add a small amount of water to make it Make a paste; dissolve chloramine (1.154g, 4mmol) in methanol (25ml). The acetone solution of chloramine phosphine was slowly added dropwise to the pasty cyclodextrin, and the dropwise addition was milled. The dropwise addition time was 1 hour, and after the dropwise addition was completed, milled for another 1 hour. After the milling is completed, the resulting product is placed in an oven and dried at 30°C for at least 3 hours. A small amount of organic solvent is used to remove the unincorporated chloramine, and the inclusion compound of chloramine and β-cyclodextrin can be obtained, and the product is a white powder.

Embodiment 3

[0048] Take 2-hydroxypropyl-β-cyclodextrin and recrystallize it twice and dry it to constant weight at 110°C. Place the β-cyclodextrin (1.425g, 1mmol) dried to constant weight in a glass bowl , Add a small amount of water to make it into a paste; dissolve chloramine (1.154g, 4mmol) in acetone (50ml). The acetone solution of chloramine phosphine was slowly added dropwise to the pasty cyclodextrin, and the dropwise addition was milled. The dropwise addition time was 1 hour, and after the dropwise addition was completed, milled for another 1 hour. After the milling is completed, the resulting product is placed in an oven and dried at 30°C for at least 3 hours. A small amount of organic solvent is used to remove the unincorporated chloramine, and then dried again to obtain the inclusion compound of chloramine and 2-hydroxypropyl-β-cyclodextrin, and the product is a white powder.

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Abstract

The present invention relates to one kind of clathrate of chloramine phosphate and cyclodextrin or its derivative, its preparation process, pesticide composition including the clathrate of chloramine phosphate and cyclodextrin or its derivative, and the use of the clathrate of chloramine phosphate and cyclodextrin or its derivative as pesticide. The clathrate is heat stable, and the present invention solves the problem of unstability of chloramine phosphate as pesticide.

Description

Technical field [0001] The present invention relates to a chloramine pesticide composition, in particular to an inclusion compound formed by chloramine phosphorus and cyclodextrin or a cyclodextrin derivative. The present invention also relates to said chloramine phosphorus and cyclodextrin The preparation method of the inclusion compound formed by chloramine or cyclodextrin derivative, comprising the pesticide composition of the inclusion compound formed by chloramine and cyclodextrin or cyclodextrin derivative, and the chlorine The use of the inclusion compound formed by ammonium phosphate and cyclodextrin or cyclodextrin derivative as an insecticide. Background technique [0002] Chloramine is a new insecticide with independent intellectual property rights in my country. It is currently the most efficient and safe organophosphorus insecticide developed and popularized in China. The product type currently sold on the market is 30% chloramine phosphate EC. The chemical name of c...

Claims

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Application Information

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IPC IPC(8): A01N25/34A01N25/10A01N57/28A01P7/04
Inventor 刘维屏周珊珊张安平
Owner ZHEJIANG UNIV OF TECH
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