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At present, my country's pesticide emulsifiers have made great progress. There are more than one hundred manufacturers, with an annual output of more than 30,000 tons of various emulsifier monomers and mixed emulsifiers.

However, the overall level of manufacturers in the pesticide emulsifier industry in my country is not high, the research and development capabilities are weak, and the quality is uneven. Among the many pesticide emulsifier companies, only a few manufacturers start from the source and have a complete series. Pesticide emulsifiers are formulated products, and thousands of different formulations must be matched with different additives. Even for the same formulation, the quality of different pesticide manufacturers is different, and the quality of the same manufacturer fluctuates in different periods. The formulation of additives is required to be adjusted accordingly, which determines that the pesticide emulsifier must be a multi-series and multi-variety fine chemical product. . Due to the insufficient motivation of pesticide companies to pursue high-quality additives, low-quality additives are popular. Some additives have less than 50% active content. Adding a large amount of aromatic products as solvents can not even reach the minimum emulsion stability. , Let alone give full play to the efficacy of the medicine.

Innovating a new pesticide requires hundreds of millions of funds. However, reasonable compounding of existing pesticides can often achieve good results. Therefore, the research and development of compound pesticides should be strongly promoted. A paired emulsifier suitable for compounding pesticides. It is a mixed type agricultural milk with a large difference in HLB value of more than two kinds. It can be compounded with one or more pesticides, and they can be adjusted in different proportions and can be applied to a variety of pesticides. . Some pesticide factories have developed and produced multiple or even dozens of compound formulations. The batch size of a single species is small and the amount of additives is small. If paired emulsifiers are used for matching, it is obviously beneficial to both pesticide factories and additives factories. . As the demand for high-quality pesticides becomes stronger and stronger, special emulsifiers that can help active substances to give full play to their efficacy have received more and more attention. A good special-purpose emulsifier can increase the efficacy of more than 30% compared with conventional additives, which is the development direction of emulsifiers.

High efficiency, low toxicity, and environmental friendliness are the mainstream of the development of pesticide formulations in the 21st century. The matching of environmentally friendly emulsifiers is an important link, but my country is currently making slow progress in this area.

In the future, the development trend of pesticide emulsifiers in my country is: high-efficiency pesticides need to be matched with high-efficiency emulsifiers. New pesticides with high selectivity and high safety have become the mainstream of pesticide development. The amount of some new pesticides has dropped from 10 g/mu to 1 g/mu. The use of conventional adjuvants for high-efficiency pesticides obviously cannot meet the demand. In accordance with the development trend of pesticides, modifying the basic structure of high-yield pesticides to make them hydrophilic is an important idea for the development of high-efficiency emulsifiers. Some high-efficiency new pesticides contain heterocycles or fused heterocycles, and water-based modified products of their basic structure are often high-yield auxiliary additives. And some intermediates or by-products may contain "oil head" precursors, which are cheap and easy to obtain, and can be developed into high-efficiency supporting additives.

Water-based pesticide formulations call for special emulsifiers. Aqueous pesticide formulations generally include water, suspension, water emulsion, suspension, microemulsion, microcapsule, etc. This type of preparation requires the following special emulsifiers as its supporting: lignosulfonate, whose molecular weight is generally more than 20,000 before it can play the role of anti-precipitation and protective colloid; naphthalene and alkyl naphthalene formaldehyde, compounded with lignosulfonate Better dispersion and suspension effect can be achieved; block copolymers of ethylene oxide and propylene oxide, with an average molecular weight of more than 5000, and polyol polycarboxylic acid esters have a three-dimensional network structure, which is compatible with ethylene oxide and propylene oxide. The block copolymer compound can ensure the good stability of the emulsion; comb-type polymer surfactant. The molecular weight generally exceeds 200,000. Such substances mainly include: polyvinylpyrrolidone, polyvinyl alcohol, carboxymethyl cellulose, sodium polyacrylate, xanthan gum, carboxymethyl starch, etc. The green emulsifier has a bright future. The development of high-efficiency and low-toxic pesticides also requires green emulsifiers. In the development of green emulsifiers, modification of natural products can often produce new effects, revealing broad prospects.