Low-foam glufosinate-ammonium synergist and preparation method thereof

Abstract

The invention relates to a low-foam glufosinate-ammonium synergist and a preparation method thereof. The low-foam glufosinate-ammonium synergist provided by the invention is prepared from the following substances in parts by mass: 10 to 30 parts of glycine betaine substance, 10 to 30 parts of surface active agent, 0.1 to 20 parts of dispersing agent, 0.1 to 20 parts of wetting agent, 0.1 to 10 parts of penetrating agent, and 0.1 to 10 parts of pH (Potential Of Hydrogen) regulator. The preparation method comprises the steps of adding the glycine betaine and the surface active agent into a reaction vessel, and stirring and heating to 80 DEG C; adding the dispersing agent, the wetting agent and the penetrating agent into a product, and uniformly stirring; then adding metered pH regulator, carrying out neutral reaction completely, and cooling for discharging materials. The low-foam glufosinate-ammonium synergist provided by the invention has the advantages of simple production method, easiness in preparation, low foamability and excellent wettability; a glufosinate-ammonium aqueous solution pesticide prepared by the synergist provided by the invention has a good weeding effect and slow reviving speed; the prepared synergist is safe to use without environment pollution.

Description

technical field [0001] The invention belongs to the field of pesticides, and in particular relates to a low-foaming glufosinate-ammonium synergist and a preparation method thereof. Background technique [0002] Glufosinate-ammonium is a new type of herbicide developed in the 1980s by Hearst Corporation (currently a subsidiary of Bayer Corporation). In addition to its herbicidal activity, it also has insecticidal and fungicidal activity. It can be mixed with insecticides to achieve The effect of prevention at the same time. The herbicide has the characteristics of high efficiency, low toxicity, and easy degradation. Water is the base agent, and it is safe and convenient to use. As an excellent herbicide, glufosinate-ammonium is very suitable as a resistance gene. With glufosinate-ammonium as the target, Hearst has successfully introduced glufosinate-ammonium resistance genes into more than 20 crops such as rice, wheat, and corn through resistance gene transfer and breeding ...

AI Technical Summary

Problems solved by technology

[0004] And prior art glufosinate-ammonium aqueous preparation adopts fatty alcohol polyoxyethylene ether sodium sulfate as main synergist preparation, and its shortcoming is:

[0005] (1) Excessive viscosity: Fatty alcohol polyoxyethylene ether sodium sulfate has too high viscosity, similar to a paste-like substance, and it is extremely difficult to add materials in production, especially in winter, which affects processing and production efficiency

[0006] (2) High foaming properties: Compounds with sodium sulfate groups have large foaming properties and are difficult to eliminate. It is difficult to meet the national requirement of 20 times diluted foam height of FAO, and the use effect is not ideal.

[0007] (3) The synergistic effect is not significant: the existing technology uses fatty alcohol polyoxyethylene ether sodium sulfate and sodium sarcosinate as synergists, and the wetting time of the prepared glufosinate-ammonium aqueous solution is generally 90~180s. Too long; the herbicidal effect lasts for 3 weeks, and the duration of the drug effect is shorter

[0008] (4) The dilution stability of the compounding pharmaceutical industry is poor, and flocculation and precipitation are prone to occur, which affects the stability of product quality

[0009] (5) The adjuvants have poor versatility for glufosinate-ammonium technical materials, and can be used for the technical powder of the original drug, but it is easy to turbid the preparation of the original drug of the mother liquor; the problem of poor compatibility with the original drugs of different manufacturers also occurs