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Pesticide emulsion water preparation method, and emulsion water prepared based on method, and applications thereof

A water emulsion and pesticide technology, applied in the field of pesticides, can solve the problems of large influence and insignificant improvement in particle size distribution of high-content water emulsion emulsions, and achieve the effects of small channels, small fluid velocity differences, and stable emulsion systems.

Inactive Publication Date: 2020-01-07
JIANGSU ROTAM CHEM
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the particle size distribution of the pesticide aqueous emulsion is greatly affected by the content and properties of the active ingredients, as well as the properties of the additives added
The method still has the following defects: the ultrasonic emulsification technology used in this invention has a certain effect on improving the low-content water-emulsion, and the improvement of the emulsion particle size distribution of the high-content water-emulsion is not obvious

Method used

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  • Pesticide emulsion water preparation method, and emulsion water prepared based on method, and applications thereof
  • Pesticide emulsion water preparation method, and emulsion water prepared based on method, and applications thereof
  • Pesticide emulsion water preparation method, and emulsion water prepared based on method, and applications thereof

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preparation example Construction

[0042] The present invention provides a kind of preparation method of pesticide aqueous emulsion, and described preparation method comprises:

[0043] (1) Prepare dispersed oil phase and continuous water phase

[0044] Preparation of dispersed oil phase: dissolving or dispersing the active ingredient and optionally one or more agriculturally acceptable hydrophobic adjuvants in one or more hydrophobic liquid carriers;

[0045] Preparation of continuous water phase: Add one or more agriculturally acceptable hydrophilic additives or liquid carriers into deionized water and stir evenly to form a continuous water phase;

[0046] (2) Process the dispersed oil phase and the continuous water phase in a micro-reaction system to obtain an oil-in-water emulsion.

[0047] What is prepared in the present invention is an oil-in-water emulsion, which is obtained by preparing the pesticide active ingredient in the dispersed oil phase, and then treating the dispersed oil phase and the continu...

Embodiment 1

[0090] This embodiment provides a kind of micro-reaction system for preparing pesticide emulsion in water, its structure is as follows figure 1 shown. The micro-reaction system is mainly composed of a feeding device, a micro-mixing device 3 and a storage tank 12;

[0091] In the above-mentioned micro-reaction system, the micro-mixing device 3 is used for mixing the dispersed oil phase and the continuous water phase; the micro-mixing device 3 includes a micro-mixer, and the micro-mixer is provided with a T-shaped mixing unit internal part, The diameter of the microchannel is 600 μm; the feeding device is composed of a liquid tank 1 connected with a constant flow pump 2 .

[0092] This embodiment also provides a basic method for preparing pesticide water emulsion by using the micro-reaction system provided by this embodiment, including:

[0093] a. Prepare dispersed oil phase and continuous water phase

[0094] Preparation of dispersed oil phase: dissolving or dispersing the ...

Embodiment 2

[0100] This embodiment provides a kind of micro-reaction system for preparing pesticide aqueous emulsion, its structure is as follows figure 2 shown. This micro-reaction system mainly is made up of feeding device, micro-mixing device 3, residence time distribution device 4 and stock tank 12; The feed port of the residence time distribution device 4 is connected, and the discharge port of the residence time distribution device 4 is connected with the storage tank 12 .

[0101] In the above-mentioned micro reaction system, the micro mixing device 3 is used for mixing the dispersed oil phase and the continuous water phase; the micro mixing device 3 includes a micro mixer, and the micro mixing device is provided with a T-shaped mixing unit internal part, The diameter of the microchannel is 600 μm; the feeding device is composed of a liquid tank 1 connected with a constant flow pump 2 .

[0102] In the above micro reaction system, the residence time distribution device 4 include...

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Abstract

The invention relates to a pesticide emulsion water preparation method, and emulsion water prepared based on the method, and applications thereof. The preparation method comprises: (1) preparing a dispersed oil phase and a continuous water phase; and (2) treating the dispersed oil phase and the continuous water phase in a micro-reaction system to obtain oil-in-water emulsion water. The invention further relates to applications of the pesticide emulsion water in prevention and treatment of diseases, insect pests and weeds in crop protection. According to the invention, the pesticide emulsion water with good stability is prepared by selecting the micro-reaction technology.

Description

Technical field [0001] The invention relates to the field of pesticides, and in particular to a preparation method of a pesticide aqueous emulsion, an aqueous emulsion prepared based on the preparation method and its use. Background technique [0002] Emulsion is a liquid-liquid dispersion system, that is, one liquid is dispersed in the form of tiny droplets in another liquid that is immiscible with it. According to the different internal and external phases, it can be divided into oil-in-water (O / W) type, For water-in-oil (W / O) and multiple emulsions, appropriate emulsifiers need to be added during the preparation process to maintain the stability of the system. Emulsifiers are usually composed of surfactants, polymers and hydrophilic solid particles. They form an interfacial film by adsorbing at the oil-water interface, reducing interfacial tension, generating electrostatic repulsion and steric hindrance to maintain the stability of the emulsion. The stability of the emul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/04A01N43/90A01N43/653A01N53/06A01N43/824A01P3/00A01P7/04A01P13/00A01P21/00B01F13/00B01F15/02B01J4/00B01J19/00
CPCA01N25/04A01N43/90A01N43/653A01N53/00A01N43/82B01J19/0093B01J4/001B01F33/30B01F35/71
Inventor 罗昌炎詹姆斯.T.布里斯托
Owner JIANGSU ROTAM CHEM
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