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Organic silicon pesticide synergist and preparation method thereof

A technology of organosilicon and synergist, applied in the field of preparation of polyether-modified trisiloxane, which can solve the problems of reduced yield and achieve the effects of less side reactions, good stability and water saving

Active Publication Date: 2013-07-31
黄山市强力化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

lead to lower yield

Method used

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  • Organic silicon pesticide synergist and preparation method thereof
  • Organic silicon pesticide synergist and preparation method thereof
  • Organic silicon pesticide synergist and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0057] a. Synthesis of special polyether:

[0058] 1.1

[0059]Put 81g of sodium methoxide and 162g of methanol into a 1L stainless steel reactor to completely dissolve the sodium methoxide, then add 550g of ethylene oxide, stir at high speed, raise the temperature to 100°C, and the pressure of the autoclave is 1-2.0 atm. As the reaction progressed, the pressure gradually decreased. When the pressure in the kettle was 1.2 atm, the temperature was lowered to normal temperature to obtain the sodium salt of polyoxyethylene ether terminated with methoxy group:

[0060]

[0061] 1.2 Move the prepared polyoxyethylene ether sodium salt into a normal-pressure reaction kettle, and after distilling off the methanol, add 160 g of dichloroethane into the kettle, stir at high speed, raise the temperature to reflux temperature, react for 2.5 hours, and steam out the untreated The reacted dichloroethane was decolorized and filtered to obtain the chlorine-terminated polyether:

[0062] ...

Embodiment 2

[0072] a1. Synthesis of special polyether:

[0073] 1.1 Add 27g of sodium methoxide into the autoclave, then add 60g of methanol and stir to fully dissolve it, add 210g of propylene oxide, stir at high speed, raise the temperature to about 105°C, and the pressure in the autoclave to 1.7atm. As the reaction proceeds, the pressure gradually decreases. When the pressure drops to 1.1-1.2 atm, it is lowered to room temperature, and then 201 g of ethylene oxide is added, and the temperature is raised to about 110°C. The pressure in the kettle is 1.8-2.0 atm. When the pressure in the kettle drops to 1.1~1.2atm, the temperature of the kettle is lowered to room temperature, and after the methanol is distilled off, the methanol solution of the sodium salt of epoxy polyether terminated by methoxy group is obtained:

[0074]

[0075] 1.2 Move the obtained methoxy-terminated epoxy polyether sodium salt (390g) into a normal-pressure reaction kettle, after steaming methanol, add 55g of di...

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Abstract

The invention discloses an organic silicon pesticide synergist and a preparation method thereof, the structural formula of the synergist is as follows, wherein a is equal to 5-50, b is equal to 0-25; the structural formula of R1 is that R1 is equal to -CH3, -H; and the structural formula of R2 is that R2 is equal to -H3, -CH3; -C4H9; -O(O)CCH3. The organic silicon pesticide synergist has the advantages of very low liquid surface tension which is about 20-22mN / m, capability of being used as a super extender, a penetrating agent and an emulsifying dispersant, good stability within an extensive pH value range, no toxicity or harm, good physiological safety performance, being applicable to a variety of herbicides, insecticides, fungicides, plant growth regulators, bio-pesticides and foliar fertilizers, saving the pesticide consumption by more than 40% and saving the water consumption by more than one third; and the preparation method of the organic silicon pesticide synergist has the advantages of fewer side effects and high yield.

Description

technical field [0001] The invention relates to an organosilicon pesticide synergist and a preparation method thereof, in particular to a preparation method of polyether modified trisiloxane. Background technique [0002] As we all know, most of the pesticides currently used in the world, including herbicides, insecticides, fungicides, and plant growth regulators, have varying degrees of toxicity, and pesticide residues in agricultural products have become a worldwide public hazard. With the improvement of the resistance of agricultural pests and fungi, the use of various pesticides is required to increase, which seriously threatens human health. In order to improve the efficacy and reduce the amount of pesticides, humans have been exploring the use of various pesticides to increase The most used are organic surfactants, penetrating agents, wetting agents, etc., and since the surface tension of these organic surfactants is mostly above 25mN / m, their synergistic effect is not...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N55/10C07F7/10C08G65/336C08G65/333
Inventor 邱万军叶光华
Owner 黄山市强力化工有限公司
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