Micro-capsule suspension-suspension agent of s-metolachlor and oxadiargyl and preparation method thereof

A technology of refined metolachlor and propargyl oxadiazone, applied in the field of pesticides, can solve the problems of farmland weed population change and community succession acceleration

Inactive Publication Date: 2017-03-29
北京明德立达农业科技有限公司
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  • Claims
  • Application Information

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Problems solved by technology

The long-term use of a single type of herbicide leads to the population change and community succession acceleration of farmland weeds, some secondary weeds gradually become major weeds, and the damage of some perennial weeds in farmland is also becoming more and more serious. albadn-resistant barnyardgrass) has also appeared

Method used

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  • Micro-capsule suspension-suspension agent of s-metolachlor and oxadiargyl and preparation method thereof
  • Micro-capsule suspension-suspension agent of s-metolachlor and oxadiargyl and preparation method thereof
  • Micro-capsule suspension-suspension agent of s-metolachlor and oxadiargyl and preparation method thereof

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preparation example Construction

[0010] The invention discloses a preparation method of a microcapsule suspension-suspension agent of refined metolachlor and propargyl oxadiazone, wherein the preparation method may include the following steps: (1) adding the oil phase material into the water phase Stir in the material to form an O / W emulsion, the weight ratio of the oil phase material to the water phase material can be 1: (0.5-2); the oil phase material can contain refined metolachlor, oil-soluble Shell material and solvent; the water phase material may contain water; (2) adding a water-soluble shell material to the O / W emulsion and mixing uniformly to obtain a fine metolachlor microcapsule suspension ; The weight ratio of the O / W emulsion and the water-soluble capsule shell material can be 1: (0.001-1.5); (3) add propargyl oxadiazone to the fine metolachlor microcapsule suspending agent to suspend agent, obtain the fine metolachlor and propargyl oxadiazone microcapsule suspension-suspension concentrate, the ...

Embodiment 128

[0032]Example 1 28% pure metolachlor propargyl oxadiazone microcapsule suspension-suspension

[0033] (1) Preparation of 35% refined metolachlor microcapsule suspension

[0034] Dissolve 36.5 g of pure metolachlor with a purity of 96% in 30 g of 200# solvent oil, add 2 g of aliphatic polyisocyanate and 3 g of sorbitan polyoxyethylene ether, and stir evenly to obtain an oil phase material; Sodium sulfonate, 0.2g of silicone antifoaming agent was dissolved in 24.8g of water to obtain a water phase material; then the oil phase material was added to the water phase material, and sheared for 1 minute at 10,000 rpm to form an O / W emulsion; 0.5 g of ethylenediamine was added dropwise to the emulsion, and the temperature was raised to 50° C. for 2 hours of heat preservation reaction to obtain 100 g of 35% refined metolachlor microcapsule suspension.

[0035] (2) Preparation of 25% propargyl oxadiazone suspension concentrate

[0036] 26g of propargyl oxadiazone with a purity of 96%, ...

Embodiment 228

[0039] Example 2 Preparation of 28% refined metolachlor-propargyl oxadiazone microcapsule suspension-suspension

[0040] (1) Preparation of 35% refined metolachlor microcapsule suspension

[0041] Dissolve 36.5 g of pure metolachlor with a purity of 96% in 30 g of 200# solvent oil, add 2.5 g of aliphatic polyisocyanate and 3 g of sorbitan polyoxyethylene ether, and stir evenly to obtain an oil phase material; Sodium lignosulfonate, 0.2g of silicone defoamer dissolved in 24.3g of water to obtain the water phase material; then the oil phase material was added to the water phase material, sheared at 12000 rpm for 1 minute to form an O / W emulsion Add 0.5 g of ethylenediamine dropwise to the emulsion, raise the temperature to 50° C. and keep it warm for 2.5 hours to obtain 100 g of 35% refined metolachlor microcapsule suspension.

[0042] (2) Preparation of 25% propargyl oxadiazone suspension concentrate

[0043] With embodiment 1.

[0044] (3) Preparation of 28% refined metolac...

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Abstract

The invention discloses a micro-capsule suspension-suspension agent of s-metolachlor and oxadiargyl and a preparation method thereof. The preparation method comprises the steps (1), oil phrase materials are added into water phrase materials and stirred, and O/W emulsion is formed; (2), water-solubility capsule shell materials are added into the O/W emulsion, mixed evenly and polymerized, and then a s-metolachlor micro-capsule suspension agent is obtained; and (3), an oxadiargyl suspension agent is added into the s-metolachlor micro-capsule suspension agent, and the micro-capsule suspension-suspension agents of the s-metolachlor and the oxadiargyl are obtained. The s-metolachlor and the oxadiargyl are compounded, the weeding spectrum is wide, and the micro-capsule suspension-suspension agent of the s-metolachlor and the oxadiargyl prepared by the preparation method has the advantages of being stable in storage, long in lasting period, capable of reducing the pesticide application time and the pesticide dosage effectively, and friendly to environment.

Description

technical field [0001] The disclosure relates to the technical field of pesticides, in particular to a microcapsule suspension-suspension agent of refined metolachlor and propargyl oxadiazone and a preparation method thereof. Background technique [0002] Farmland weeds have always been an important factor that plagues the development of agricultural production and hinders the improvement of crop yields. There are more than 60 kinds of main farmland weeds that cause harm to agricultural production in our country, causing about 10% loss of grain output every year. The long-term use of a single type of herbicide leads to the population change and community succession acceleration of farmland weeds, some secondary weeds gradually become major weeds, and the damage of some perennial weeds in farmland is also becoming more and more serious. Grass grass resistant to albadan) has also emerged. [0003] At present, the weed damage in farmland has been increasing. Therefore, it is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N43/824A01N37/22A01N25/04A01N25/28A01P13/00
CPCA01N43/82A01N25/04A01N25/28A01N37/22
Inventor 东琴徐妍马超潘静高敬雨刘润峰
Owner 北京明德立达农业科技有限公司
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