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A technology of acifluorfen and water agent, which is applied in the field of pesticides, can solve problems such as uneven distribution and unoptimized emulsification effect, and achieve the effects of improving distribution uniformity, improving emulsification effect, and maintaining uniformity
Inactive Publication Date: 2014-11-05
JIANGSU CHANGQING AGROCHEMICAL CO LTD
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Problems solved by technology
[0003] At present, it is generally divided into 21.4% and 24% acifluorfen water preparations. The existing preparation method is generally to first add an emulsifier to acifluorfen, and then add a solvent to prepare it. It has the following Disadvantages: Adding emulsifier first can disperse acifluorfen, so that it can be evenly dispersed into the solvent, but generally the two are simply mixed, which will inevitably cause uneven distribution and cause the emulsification effect to not be optimal.
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Embodiment 1
[0016] The present invention carries out according to the following processing steps:
[0017] 1) First, acifluorfen is used as a raw material, and mixed with calixarene as a solvent under the condition of 10°C-40°C;
[0018] 2) After mixing evenly, add carboxylate as emulsifier and stir evenly;
[0019] 3) It is obtained by filtering and removing the precipitate.
[0020] The calixarene is p-tert-butylcalix[6]arene.
[0021] In the step 2), the solution prepared in the step 1) is poured into the emulsifier.
[0022] In the step 1) above, the emulsifier is firstly added to the acifluorfen, and the adding method is to firstly add the acifluorfen to the emulsifier, and then add the acifluorfen to the solvent for mixing.
Embodiment 2
[0024] The present invention carries out according to the following processing steps:
[0025] 1) First, acifluorfen is used as a raw material, and mixed with calixarene as a solvent under the condition of 10°C-40°C;
[0026] 2) After mixing evenly, add carboxylate as emulsifier and stir evenly;
[0027] 3) It is obtained by filtering and removing the precipitate.
[0028] The calixarene is p-tert-butylcalix[6]arene.
[0029] In the step 2), the solution prepared in the step 1) is poured into the emulsifier.
[0030] In the step 1) above, the emulsifier is first added to the acifluorfen, and then added to the solvent for mixing.
[0031] The above two embodiments are used for the following operations in farmland:
[0032] At the stage of compound leaves of 1-3 soybeans, the broad-leaved weeds are all out, and the plant height is 5-10cm. Use 60-85ml of 21.4% water agent per mu, and 20kg of water to spray the stems and leaves of weeds evenly. Compared with the herbicidal ef...
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Abstract
The invention relates to a preparation method of an acifluorfen water aqua. The method comprises the following steps: 1) first mixing a raw material of acifluorfen with a solvent of calixarene at the temperature of 10 DEG to 40 DEG C; 2) mixing evenly, adding an emulsifier carboxylic ester, and stirring evenly; and 3) and filtering the sediment to obtain the water aqua. The invention has the following advantages: 1) the invention uses calixarene as the solvent, the cup-shaped structure of calixarene can form good surrounding around the acifluorfen, and has certain concentration performance while maintaining dispersion properties of the acifluorfen water aqua, so as to keep the uniformity of pesticide properties in the application process, ensure the concentration of pesticide properties, and improve the control effect; and 2) acifluorfen is added to the emulsifier to guarantee the emulsifying effect of acifluorfen, and improve the dispersion performance.
Description
technical field [0001] The invention relates to a preparation method of 21.4% acifluorfen aqueous solution, belonging to the technical field of pesticides. Background technique [0002] Acifluorfen is a contact-type selective post-emergence herbicide, which can be absorbed by the stems and leaves of weeds, but not absorbed by roots in the soil, and is easily decomposed by microorganisms. It is safe for soybeans; it is mainly suitable for the control of amaranth in soybean fields , amaranth, amaranth, ragweed, brassica, ash quinoa, wild watermelon, melon, mandala, split-leaf morning glory, flower family, Rubiaceae, spring Polygonum, Pennsylvania Polygonum, orangutan grass. It also has a good control effect on green foxtail, millet and wild sorghum at the 1-3 leaf stage, and has a strong inhibitory effect on lettuce and spinach. [0003] At present, it is generally divided into 21.4% and 24% acifluorfen water preparations. The existing preparation method is generally to first...
Claims
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Application Information
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