Metamifop water-emulsion, preparation method and application thereof
A technology of fenpyramid and water emulsion, which is applied in the directions of herbicides and algicides, botanical equipment and methods, applications, etc., can solve the problems of large environmental pollution and large amount of organic solvents, and achieve a uniform and stable system Good performance and environmental safety effect
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[0024] In some optional embodiments, the preparation method includes: mixing fenpyramid with an organic solvent to obtain an oil phase after dissolving; mixing potassium salt of acrylic acid copolymer with water to obtain a water phase; mixing the oil phase with the water phase After mixing, emulsification treatment is carried out to obtain the above-mentioned oxafenamide aqueous emulsion.
[0025] In the preparation method of the oxamifen water emulsion provided in the embodiments of the present disclosure, firstly, the oxamifen and the organic solvent are mixed to obtain a liquid oil phase mixture with good solubility, which can reduce the amount of the organic solvent in the oil phase mixture, Improve the solubility of the original drug of fenpyramid; mix the potassium salt of the acrylic acid copolymer with water to obtain a water phase; mix the obtained oil phase with the water phase and perform emulsification treatment to obtain the aforementioned fenpyramid water emulsi...
Embodiment 1
[0035] The effect of this part of the embodiment is mainly about the actual preventive effect. The formulation of the emulsion in water itself should also be included in the front, that is, the screening process of the auxiliary solvent and the type of surfactant, the technical effect obtained, and the physical and chemical properties of the final preparation. It should include a comparative experiment with other commonly used types of surfactants such as the surfactants used in CN101779639,
[0036] This example provides the effect of fenpyramid aqueous emulsion on the growth of barnyardgrass roots and shoots.
[0037] In this example, 10% fenpyramid aqueous emulsion was prepared by using 10% fenpyramid, 20% cyclohexanone, 10% acrylic acid copolymer potassium salt, and 100% water supplement;
[0038] In this embodiment, a control agent 1: 10% fenpyramid emulsifiable concentrate is designed;
[0039] The present embodiment also designed a contrast agent 2: 5% oxazifopil was p...
Embodiment 2
[0058] In this example, 8% oxazifamid, 20% cyclohexanone, 7% acrylic acid copolymer potassium salt, and 100% water were used to prepare 8% oxazifen water emulsion; 8% oxazole Amphetamide emulsifiable concentrate is used as the control agent 3, and the cosolvent is 200# solvent oil, and the emulsifier is lauryl polyoxyethylene ether phosphate and nonylphenol polyethylene glycol ether prepared 8% oxazamide Water emulsion was used as the control agent 4, and a clear water blank control (CK) was set.
[0059] The results show that when the mass concentration of the active ingredients is 500mg / kg, the 8% oxafenamide aqueous emulsion provided by this embodiment has an inhibitory rate of 50.27% on the growth of barnyardgrass roots, and the control agent 3 has an effect on the growth of barnyardgrass roots. The inhibition rate of the control agent 4 is 41.28%, and the inhibition rate of the barnyardgrass root growth is 40.17%; similarly, when the mass concentration of the active ingre...
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