Broad spectrum type diquat compound synergist and preparation method thereof

Abstract

The invention relates to a broad spectrum type diquat compound synergist and a preparation method thereof. The broad spectrum type diquat compound synergist is prepared by synthesizing a pyrrolidone compound, a surfactant, a wetting agent, a dispersing agent, a penetrating agent, a pH regulator and a defoaming agent. A series of products on a general market can be replaced by the broad spectrum type diquat compound synergist; the universality of the synergist and the convenience of use in charging can be greatly expanded; a prepared diquat aqueous solution product is stable in quality, the weeding effect is obviously improved, the lasting time of the efficacy is long, the application amount of a herbicide can be effectively reduced, the pollution to the environment is reduced, and resources are saved.

Description

technical field [0001] The invention relates to the field of pesticides, in particular to a broad-spectrum diquat compound synergist and a preparation method thereof. Background technique [0002] Diquat and paraquat are both bipyridine herbicides. Bipyridine herbicides were developed by ICI Company (now owned by Syngenta) in 1958. It is fast and conducts upward in the asymplast, but does not conduct downward in the phloem, so it cannot kill the lower part of the weed. Two important species of such herbicides are paraquat and diquat. The chemical name of diquat is 1,2-ethylene-2,2-bispyridinium dionium salt, including alginate and dibromide, and other names such as Reglone, Aquacide, etc., and diquatdibromide is mainly used. The acute oral LD50 of this product in rats is 231mg / kg, with moderate toxicity. Bipyridyl herbicides can be quickly and strongly adsorbed by soil colloids, so they lose their activity once they touch the soil, so they are extremely safe for subsequen...

AI Technical Summary

Problems solved by technology

[0005] (1) Poor applicability: the existing diquat adjuvants have poor universal applicability, and cannot be used universally for various mother liquors and contents, and the general applicability is limited.

[0006] (2) Poor wetting and spreading properties: Diquat water preparations prepared by existing technologies generally do not require wetting, and the wetting time is generally around 180s, and the wetting effect needs to be strengthened.

[0007] (3) The synergistic effect is not significant: some technologies use fatty alcohol polyoxyethylene ether sodium sulfate as a synergist, and the drug effect lasts for 2 weeks, and the drug effect lasts for a short time

[0008] (4) Poor resistance to extreme conditions: currently technically, Diquat preparations have a greater impact on the efficacy of diquat preparations in extreme environments, and the frost resistance and high temperature resistance need to be improved

[0009] (5) The dilution stability of the prepared drug solution is poor, prone to flocculation and precipitation, which affects the stability of product quality