Clodinafop-propargyl aqueous emulsion and preparation method thereof
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A technology of clodopagyl and water emulsion, which is applied in botany equipment and methods, herbicides, algicides, biocides, etc., can solve the problems of high cost, environmental pollution, and low safety in use, and achieve the elimination of system foam, Eliminate dust pollution, facilitate processing and use
Active Publication Date: 2010-09-29
SHANGHAI XIANGLIN AGRI TECH CO LTD
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[0003] In order to solve the problems of environmental pollution, high cost, and low safety in production, transportation, and use of existing clodopradyl preparations, the p
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[0012] Example 1:
[0013] 105g of clodinafop-argyl prodrugate with a purity of 95% was dissolved in 230 mixed benzene, stirred until transparent with a machine, and 20g of calcium dodecylbenzenesulfonate, 30g of fatty alcohol polyoxyethylene ether phosphate (AEO9-P), Trisiloxane 100g, ammonia water 10g, ethylene glycol 50g, xanthan gum 5g, defoamer polyether modified polysiloxane 1.0g, lactic acid 1.0g, the above-mentioned mixed material is slowly mixed under the condition of high-shear emulsifier Add 449g of water, the rotating speed of the high-shear emulsifier is 1500 revs / min, and the shearing time is 10 minutes to obtain the milky white oxaloprexate aqueous emulsion product.
Example Embodiment
[0014] Example 2:
[0015] Dissolve 105g of clodopradylglycerin with a purity of 95% in 220g of toluene, stir until transparent, then add 40g of sorbitan fatty acid ester, styrylphenol formaldehyde resin, polyoxyethylene-polyoxypropylene block polyether (Nongru No. 33) 20g, fatty alcohol polyoxyethylene ether phosphate (AEO9-P) 30g, trisiloxane 50g, diethanolamine 10g, propylene glycol 50g, carboxymethylcellulose sodium (CMC-Na) 3g, poly Ether-modified polysiloxane 1.0g, slowly add 471g of water to above-mentioned mixed material under the condition of high-shear emulsifier, the rotating speed of high-shear emulsifier is 3000 rev / min, and shearing time is 15 minutes, both obtained milky white alkyne Oxalic acid water emulsion product.
Example Embodiment
[0016] Example 3:
[0017] Dissolve 105g of clodoparylglycerin with a purity of 95% in 100g of toluene and 100g of cyclohexanone, stir it mechanically until it becomes transparent, then add 30g of calcium dodecylbenzenesulfonate, alkylphenol polyoxyethylene ether phosphate ethanolamine salt 30g, fatty alcohol polyoxyethylene ether (AEO9) 30g, trisiloxane 20g, citric acid 5g, glycerin 30g, carboxymethylcellulose (CMC) 1g, polyether modified polysiloxane 1.0g, will The above mixed material was slowly added with 543 g of water under the condition of a high-shear emulsifier, the rotating speed of the high-shear emulsifier was 4000 rpm, and the shearing time was 20 minutes, to obtain a milky white clodopradyl water emulsion product.
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Abstract
The invention relates to selective stem leave herbicide for wheat and a preparation method thereof, in particular to clodinafop-propargyl aqueous emulsion and a preparation method thereof. The clodinafop-propargyl aqueous emulsion comprises the following components in percentage by mass: 10 to 30 percent of clodinafop-propargyl, 5 to 17 percent of surfactant, 0.5 to 1 percent of PH regulator, 1 to 5 percent of antifreeze agent, 20 to 35 percent of organic solvent and the balance of water. The preparation method comprises the following steps of: dissolving the clodinafop-propargyl into the organic solvent, stirring the mixture mechanically until the solution is transparent, adding the surfactant, and stirring the mixture uniformly to prepare an oil phase; dissolving the PH regulator, a thickening agent, a defoaming agent and the antifreeze agent in the balance of water to prepare a water phase; and adding the water phase into the oil phase slowly, and simultaneously, performing shearing by using a high-shear emulsion machine for 10 to 30 minutes to prepare the clodinafop-propargyl aqueous emulsion. Compared with missible oil products, in products of the clodinafop-propargyl aqueousemulsion, the use level of the organic solvent is reduced by 60 percent at most, the environmental pollution and the toxicity of pesticide are reduced, flash points of the products are improved, and the safety of production, transportation and users is improved; and compared with wettable powder products, the products of the clodinafop-propargyl aqueous emulsion completely avoid dust pollution.
Description
technical field [0001] The present invention relates to a wheat selective stem and leaf herbicide and a preparation method thereof, specifically a clodinafop-propargyl (English name Clodinafop-propargyl, alias: clodinafop-propargyl, CAS number: 105512-06-9, Chemical name: R-2-[4-(5-chloro-3-fluoro-2-pyridyloxy)-phenoxy]-propargyl propionate, emulsion in water and its preparation method. Background technique [0002] Emulsion in water is one of the most environmentally friendly formulations of pesticides. A new formulation of pesticides that uses water as an auxiliary material is an environmentally friendly new formulation of green pesticides that conforms to the development direction of pesticide formulations in the world. It is also one of the main pesticide formulations in developed countries at home and abroad. Since it does not contain organic solvents, or a small amount of organic solvents has formed an O / W emulsion, the organic solvents are completely surrounded by wat...
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