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Sucrose ester insecticide and method for preparing the same

A technology of sucrose esters and insecticides, which is applied in the field of sucrose esters insecticides and its preparation, can solve the problems that the mechanism of action of pests is not completely clear, and achieve the effects of good storage stability, excellent control effect and low cost

Inactive Publication Date: 2007-07-18
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Sucrose ester can make the skin of pests fall off, dehydrate and dry up and die, but its mechanism of action on pests has not yet been fully understood

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1: Weigh 0.5 kg of sucrose heptanoate, mix well with 55.0 kg of xylene, 20.0 kg of toluene, and 24.5 kg of sodium lauryl sulfate in a reactor at 45°C for 37 minutes to obtain the sucrose ester EC insecticide . Using 1000 times liquid of this preparation to carry out the field drug efficacy test, the control effects on tobacco aphids on the 4th and 8th days after the drug were 91.5%, 82.6%, respectively, and the control effects on the whitefly on the 5th and 9th days after the drug were respectively 88.4% and 75.5%.

Embodiment 2

[0024] Embodiment 2: Take by weighing 84.0kg of sucrose enanthate, and 10.0kg of ethanol, 1.0kg of polysorbate ester, 3.0kg of sodium lauryl sulfate, 1.0kg of sodium lauryl sulfate, N-methyl fatty acid amide taurine 1.0 kg of acid salt was stirred in a 48° C. reaction kettle for 50 minutes and fully mixed to obtain the sucrose ester emulsifiable insecticide. Using 2800 times liquid of this preparation to carry out the field drug efficacy test, the control effects on tobacco aphids on the 4th and 8th days after the treatment were 97.3%, 93.5%, respectively, and the control effects on the whitefly on the 5th and 9th days after the treatment were respectively 92.2% and 88.7%.

Embodiment 3

[0025] Example 3: Weigh 0.7kg of sucrose heptanoate, mix well with 74.3kg of toluene, 5.0kg of sodium lauryl sulfate, and 20.0kg of N-methyl fatty amide taurate in a reactor at 50°C for 52 minutes Evenly, the sucrose ester EC insecticide is obtained. Using 1000 times liquid of this preparation to carry out the field drug efficacy test, the control effects on tobacco aphids were 92.7% and 85.0% respectively on the 4th and 8th days after the drug treatment, and the control effects on the whitefly on the 5th day and the 9th day after the drug treatment were respectively 89.2%, 80.5%.

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Abstract

A sucrose ester insecticide in the form of emulsified oil or microemulsion for preventing and killing the aphis and aleyrodid of tobacco is disclosed. Its emulsified oil is proportionally prepared from sucrose ester, emulsifier and organic solvent through proportional mixing in reactor at 45-64 deg.C and stirring for 35-60 min.

Description

technical field [0001] The invention relates to an insecticide preparation for pest control, in particular to a sucrose ester insecticide and a preparation method thereof. Background technique [0002] my country is a large agricultural country, especially a major producer of crops such as tobacco, cotton, and rice. The economic losses caused by pests and diseases are huge every year, and active sucrose esters can kill some important pests that harm these crops without causing environmental pollution. . Therefore, the research and development of sucrose esters has special and important significance to the agricultural development of our country. [0003] In recent years, sucrose ester insecticides have received widespread attention. Chortyk et al reported the synthesis of sucrose ester compounds with insecticidal activity, sucrose heptanoate, sucrose octanoate and sucrose nonanoate, etc. by using the acid chloride method (J Agric Food Chem, 1996, 44: 1551-1557). Sucrose es...

Claims

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Application Information

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IPC IPC(8): A01N31/00A01P7/04
Inventor 何道航
Owner SOUTH CHINA UNIV OF TECH
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