Clathrate of chloramine phosphate and cyclodextrin or derivative thereof and the preparation process thereof

A cyclodextrin and derivative technology is applied in the field of inclusion complexes formed by chloramidophos and cyclodextrin or cyclodextrin derivatives and the preparation thereof, and can solve the problems of thermal decomposition, sample decomposition, easy precipitation and the like

Inactive Publication Date: 2009-04-22
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 derivative thereof and the preparation process thereof
  • Clathrate of chloramine phosphate and cyclodextrin or derivative thereof and the preparation process thereof
  • Clathrate of chloramine phosphate and cyclodextrin or derivative thereof and the preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Take β-cyclodextrin for recrystallization twice, dry it to constant weight at 110°C, place the β-cyclodextrin (1.135 g, 1 mmol) dried to constant weight in a glass mortar, add a small amount of water to dissolve it Make a paste; chloramidophos (577mg, 2mmol) is dissolved in acetone (25ml). Slowly add the acetone solution of chloramidophos into the pasty cyclodextrin, and grind it while adding it. The dropping time is 1 hour, and then grind it for 1 hour after the dropping. After milling, the resulting product was dried in an oven at 30° C. for at least 3 hours. Use a small amount of organic solvent to remove the unincluded chloramidophos, and the inclusion product of chloramidophos and β-cyclodextrin can be obtained, and the product is a white powder.

Embodiment 2

[0045] Take β-cyclodextrin for recrystallization twice, dry it to constant weight at 110°C, place the β-cyclodextrin (1.135 g, 1 mmol) dried to constant weight in a glass mortar, add a small amount of water to dissolve it Make a paste; chloramidophos (1.154g, 4mmol) is dissolved in methanol (25ml). Slowly add the acetone solution of chloramidophos into the pasty cyclodextrin, and grind it while adding it. The dropping time is 1 hour, and then grind it for 1 hour after the dropping. After milling, the resulting product was dried in an oven at 30° C. for at least 3 hours. Use a small amount of organic solvent to remove the unincluded chloramidophos, and the inclusion product of chloramidophos and β-cyclodextrin can be obtained, and the product is a white powder.

Embodiment 3

[0047] Take 2-hydroxypropyl-β-cyclodextrin and recrystallize twice, dry to constant weight at 110°C, put the dried β-cyclodextrin (1.425g, 1mmol) in a glass mortar , adding a small amount of water to make a paste; chloramidophos (1.154g, 4mmol) was dissolved in acetone (50ml). Slowly add the acetone solution of chloramidophos into the pasty cyclodextrin, and grind it while adding it. The dropping time is 1 hour, and then grind it for 1 hour after the dropping. After milling, the resulting product was dried in an oven at 30° C. for at least 3 hours. Use a small amount of organic solvent to remove unincluded chloramidophos, and dry again to obtain the inclusion product of chloramidophos and 2-hydroxypropyl-β-cyclodextrin, and the product is a white powder.

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PUM

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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 chloramidophos pesticide composition, in particular to an inclusion compound formed of chloramidophos and cyclodextrin or cyclodextrin derivatives, and the present invention also relates to said chloramidophos and cyclodextrin The preparation method of the inclusion complex formed by chloramidophos and cyclodextrin or cyclodextrin derivative, and the chlorine Use of the inclusion complex formed by amidophos and cyclodextrin or cyclodextrin derivatives as an insecticide. Background technique [0002] Chloramidophos is a new type of insecticide with independent intellectual property rights in my country. It is the latest highly efficient and safe organophosphorus insecticide developed and widely used in China. The product type currently on the market is 30% chloramidophos emulsifiable concentrate. The chemical name of chloramidophos is: O, S-dimethyl (2,2,2-trichloro-1-hydroxyl-ethyl) thiophosphoramide, which is prepa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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