Emulsifier stable in performance

Abstract

The invention relates to an emulsifier stable in performance. The emulsifier comprises, by mass, 6-110 parts of acrylate, 120-450 parts of deionized water, 30-350 parts of neutralizing agent, 56-80 parts of low-HLB-value surfactant, 110-500 parts of vegetable oil, 52-60 parts of initiator, 55-60 parts of crosslinking agent and 8-400 parts of high-HLB-value surfactant. By the emulsifier, a pesticide formulator can easily obtain a pesticide emulsion excellent in stability without considering the solubility of raw material pesticides.

Description

technical field [0001] The invention belongs to a polymer emulsifier and a preparation process thereof, in particular to an emulsifier for low-toxic pesticides and a preparation process thereof. technical background [0002] Emulsified pesticides have a better effect than other formulations of pesticides, mainly because it enables the active ingredients of pesticides to be distributed in water in a very small state. The difference of emulsifier will directly affect the stability of pesticide emulsifiable concentrate, and then obviously affect the efficacy of pesticide. Only when a certain emulsification stability is achieved can the insecticidal, bactericidal and herbicidal effects of pesticides be brought into full play. [0003] Pesticide particles with different sizes of droplets have different stability: when the pesticide particle is less than 0.05 μm, it is in a solubilized state in water and is relatively stable; when the pesticide particle is 0.05-1 μm, it is basica...

AI Technical Summary

Problems solved by technology

Some heterocyclic compounds, especially nitrogen-containing compounds such as pyridine, pyrimidine, pyrazole, thiapyr and triazole, have low solubility in common solvents because they are solid pesticides. Traditional benzene, alcohol solvents, and small molecule emulsifiers Agents and polyether emulsifiers can no longer adapt to it, mainly in the suspension stability and emulsification ability of new high-efficiency, low-toxicity, and solid original drugs, which cannot meet the stability requirements of pesticide emulsifiable concentrates.

[0005] In particular, the low-toxicity and high-efficiency pesticide technical materials that have appeared in recent years are basically pesticides that are very intolerant to water, oil, and organic solvents. General emulsifiers, especially the current small molecule emulsifiers and polyether emulsifiers, Can no longer meet the emulsification needs of this new type of pesticide with high efficiency and low toxicity

[0006] Therefore, at the present stage, when pesticide emulsifiable concentrate formulators prepare pesticide emulsifiable concentrates with low-toxicity and high-efficiency new-type pesticide active ingredients, in order to obtain stable pesticide emulsifiable concentrates, they generally increase the amount of organic solvents, often the amount of organic solvents used is equal to that of the original pesticides. Several times or even dozens of times, the new pesticide lost its original advantages of low toxicity, high efficiency and environmental protection