Phoxim emulsion in water (EW) and preparation method thereof
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A technology of phoxim water emulsion and water emulsion, which is applied in the field of pesticide preparations and its preparation, can solve the problems of easy fire, environmental pollution, explosion, etc., and achieve the effects of reducing toxicity and benefiting environmental protection
Inactive Publication Date: 2011-05-18
威海韩孚生化药业有限公司
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And emulsifiable concentrate contains a large amount of organic solvents, there are unsafe f
Method used
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Embodiment 1
[0026] Take by weighing phoxim former drug 10kg, solvent xylene 5kg, emulsifier ethylene oxide propylene oxide block copolymer 3kg, dispersion thickener polyvinyl alcohol 0.5kg, antifreeze agent ethylene glycol 2kg, defoamer organic Silicon 0.1kg, deionized water 79.4kg.
[0027] Preparation:
[0028] 1. Preparation of oil phase
[0029] Put the above-mentioned weighed phoxim original drug, xylene, and emulsifier into the oil phase preparation kettle, stir and dissolve continuously until the materials in the kettle form a uniform liquid, and set aside.
[0030] 2. Preparation of water phase
[0031] Put the above-mentioned weighed deionized water, polyvinyl alcohol, ethylene glycol, silicone, etc. into the water phase preparation kettle, and keep stirring until the materials in the kettle form a uniform liquid, and set aside.
[0032] 3. Preparation of phoxim aqueous emulsion
[0033] Put the above-mentioned prepared oil phase into the water emulsion preparation kettle equ...
Embodiment 2
[0035] Weigh 20kg of phoxim original drug, 1kg of xylene, 6kg of ethylene oxide and propylene oxide block copolymer, 0.3kg of thickener xanthan gum, 1.5kg of propylene glycol, 0.5kg of defoamer silicone, deionized water 61.7kg. With material by the water emulsion preparation procedure of embodiment 1, be made into 20% phoxim emulsion in water.
Embodiment 3
[0037] Weigh 30kg of phoxim original drug, 12kg of xylene, 10kg of ethylene oxide and propylene oxide block copolymer, 0.2kg of thickener polyvinyl alcohol, 1kg of ethylene glycol, 0.2kg of defoamer silicone, deionized 46.6kg of water. The above materials were formulated into 30% phoxim emulsion in water according to the emulsion in water formulation procedure described in Example 1.
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Abstract
The invention relates to a pesticide preparation and a preparation method thereof, in particular to a phoxim emulsion in water (EW) and a preparation method thereof. The phoxim EW comprises the following components in parts by weight: 1-40 parts of phoxim, 0-20 parts of solvent, 1-16 parts of emulsifier, 0.1-3 parts of thickener, 0.2-5 parts of antifreeze agent, 0-3 parts of antimicrobial agent, 0.1-1.5 parts of antifoaming agent, a proper amount of pH value modifier and the balance of deionized water. The pesticide preparation is used for preventing and curing soil pests, such as mole crickets, grubs, wireworms, cutworms and the like, can be used for warehouses and sanitary pests, has the advantage of long-lasting efficacy and short efficacy continuing period for foliage application, and can be used for preventing and curing cotton bollworms, armyworms, rice stem borers, ostrinia furnacalis, soybean moth and the like. The pesticide preparation has the advantages that the use amount of organic solvent is reduced or the organic solvent is abandoned, the manufacture cost and use cost are lowered, and the toxicity for operators, storage and transportation personnel and users in the use process is reduced, thereby being an environmentally-friendly product with high safety.
Description
technical field [0001] The invention relates to a pesticide preparation and a preparation method thereof, in particular to a phoxim emulsion in water and a preparation method thereof. Background technique [0002] As people's awareness of environmental protection is getting stronger and they are eager for high-efficiency, low-toxicity, low-residue, and environment-friendly pesticides, pesticide scientists are working day and night to develop new varieties and formulations of high-efficiency, low-toxicity, and environment-friendly pesticides. [0003] Phoxim, chemical name: o,o-diethyl-2-chlorobenzylidene aminothiooxyphosphoryl ester, pure product is light yellow oily liquid, melting point 5-6°C, hardly soluble in water , and soluble in organic solvents, is a low-toxic, broad-spectrum, high-efficiency organic insecticide. It has stomach poisoning and contact killing effects. It has a good control effect on various Lepidoptera pests that harm peanuts, wheat, rice, cotton, co...
Claims
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Application Information
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