Chlopyrifos and pymtrozine composite microcapsule suspending agent and its preparation method

A microcapsule suspending agent, pymetrozine technology, applied in the directions of botanical equipment and methods, biocides, biocides, etc., can solve the problems of large environmental pollution, high prevention and control costs, poor stability, etc., to reduce pollution, reduce The effect of preventing cost and improving stability

Active Publication Date: 2008-11-19
浙江威尔达化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to develop a broad-spectrum control, A chlorpyrifos and pymetrozine compound microcapsule suspension pesticide preparation that meets the requirements of pollution-free agricultural production with high drug efficacy, strong stability, little environmental pollution, long duration, and low control cost; another object of the present invention is Propose the preparation method of this composite microcapsule suspension

Method used

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  • Chlopyrifos and pymtrozine composite microcapsule suspending agent and its preparation method
  • Chlopyrifos and pymtrozine composite microcapsule suspending agent and its preparation method

Examples

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Effect test

Embodiment 1

[0025] Embodiment 1 (chlorpyrifos, pymetrozine compound microcapsule suspension product one):

[0026] A kind of compound microcapsule suspension of chlorpyrifos and pymetrozine, prepared according to the following steps:

[0027] 1) Composition of chlorpyrifos and pymetrozine: Weigh 15 grams of chlorpyrifos and 5 grams of pymetrozine, mix and set aside;

[0028] 2) Preparation of the capsule core substance: 20 grams of the mixture prepared in step 1) was dissolved into a solution with 3 grams of dimethylformamide, and then the solution was mixed with 0.2 grams of 0201-B to prepare the capsule core substance composition;

[0029] 3) Preparation of urea-aldehyde resin preform: weigh urea and formaldehyde in a ratio of 1:2 by weight; pour formaldehyde into the reactor, add 2 / 3 of urea, and adjust pH with 5% sodium hydroxide solution When the value reaches 8.0, heat to 50°C, react for 30 minutes, then add the remaining 1 / 3 urea, heat to 70°C, continue to react for half an hour, ...

Embodiment 2

[0032] Embodiment 2: (chlorpyrifos, pymetrozine compound microcapsule suspension product two)

[0033] 20 grams of chlorpyrifos, 2 grams of pymetrozine, 2 grams of dimethylformamide and 0.3 grams of Nongru 0201-B are prepared into a capsule heart mixture; 24.3 grams of capsule heart mixture and 8.1 grams of urea aldehyde resin prefabricated matter (3: 1) Ratio, prepared as a polymer-cured product of microcapsules; finally add 3 grams of 0201-B and 1 gram of Tween-85, and make up to 100% with 63.6 grams of water, and prepare 22% according to the process and steps of Example 1 100 grams of chlorpyrifos-pymetrozine compound microcapsule suspension preparation.

Embodiment 3

[0034] Embodiment 3: (chlorpyrifos, pymetrozine compound microcapsule suspension product three)

[0035] According to 20 grams of chlorpyrifos, 1 gram of pymetrozine, 4 grams of dichloromethane, 0.1 gram of Tween 20 and 0.2 gram of Tween 60, a mixture of cystic heart is prepared; 25.3 grams of cystic heart mixture and 8.5 grams of urine aldehyde resin prefabricated (3:1) ratio, prepared into the polymerization-cured product of microcapsules; finally add 2 grams of OP-5 and 1 gram of gelatin, and make up to 100% with 63.2 grams of water, and prepare 21% according to the process and steps of Example 1 100 grams of chlorpyrifos-pymetrozine compound microcapsule suspension preparation.

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Abstract

The invention relates to a microcapsule suspending agent compounded by chlorpyrifos and pymetrozine, and a preparation method thereof, and belongs to the pesticide production technology field. The pesticide takes the chlorpyrifos and the pymetrozine as the main active substances, a small amount of organic solvent and emulsifier as the auxiliary material, and takes urea-formaldehyde resin as the cyst membrane material, and is prepared through the interfacial polymerization-solidification method. The toxic components of the compound microcapsule suspending agent are packaged by the urea-formaldehyde resin, and the microcapsule suspending agent has the advantages of security, low-toxicity, high-efficiency, stabilization, etc.; meanwhile, the pesticide ingredient in the product slowly releases through the wrapping material, therefore, the control time of the product is prolonged, and the availability of the pesticide ingredient is improved; and the product is suitable for preventing and controlling pests, such as rice plant hoppers and Chinese chives maggot, etc.

Description

technical field [0001] The invention relates to the technical field of pesticide preparation, in particular to a microcapsule suspension pesticide compounded by chlorpyrifos and pymetrozine and a preparation method thereof. Background technique [0002] With the development of pesticide science, safe, efficient and low-pollution new dosage forms, such as aqueous emulsion, microemulsion, aqueous suspension, droplet, dry fluid, water dispersible granules and microcapsules, etc. new trend. Microcapsules (Microcapsules, MC) use polymer materials as capsule walls or membranes to wrap pesticide active substances by chemical, physical or physicochemical methods to form a microcapsule with a semi-permeable capsule. Among the current new formulations of pesticides, it is one of the new formulations with the highest technical content and the most development prospects. Its advantage is that it can release pesticide active substances continuously and slowly at a controlled flow rate w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N43/836A01N57/16A01N25/02A01P7/00
Inventor 陈列忠俞晓平陈建明张珏锋
Owner 浙江威尔达化工有限公司
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