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Mefenacet microemulsion and preparation method thereof

A technology of mefenacet microemulsion and microemulsion, which is applied in the field of paddy field herbicides and its preparation, can solve the problems of no mefenacet microemulsion, achieve good control effect, protect the ecological environment, and reduce product costs Effect

Inactive Publication Date: 2015-06-03
YUNNAN UNIVERSITY OF FINANCE AND ECONOMICS
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  • Mefenacet microemulsion and preparation method thereof
  • Mefenacet microemulsion and preparation method thereof
  • Mefenacet microemulsion and preparation method thereof

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Embodiment Construction

[0025] (1) Preparation of mefenacet microemulsion

[0026] The microemulsion of the present invention is compiled into 4 sample dosage forms according to Table 1 and does stability test, wherein, the ratio of mefenacet, composite emulsifier, co-emulsifier, cosolvent, synergist and water component is as follows Table 1 , in the table test, the cosolvent is ethanol or isoamyl alcohol, and the synergist is synergistic ether or synergistic sulfone. Table 1:

[0027] serial number Mefenacet (%) Compound emulsifier (%) Co-emulsifier (%) Co-solvent (%) Synergist (%) water(%) 1 2 10 2 5 2 79 2 3 12 2 8 1 74 3 4 15 2 10 1 68 4 5 20 2 12 2 59

[0028] The results of the sample stability test in Table 1 above show that the thermal storage stability, time-lapse stability, and dilution stability of the microemulsion are good, without separation or crystallization, and the formulation can be maintained at a temperature of 44...

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Abstract

The invention relates to a mefenacet microemulsion and a preparation method of the mefenacet microemulsion, belonging to paddy field herbicide and preparation of the paddy field herbicide. The mefenacet microemulsion comprises mefenacet active compound, a compound emulsifier, a co-emulsifier, a cosolvent, water and the like, wherein the compound emulsifier is prepared by higher fatty acid methyl ester sodium sulfonate, diisooctyl succinate sodium sulfonate and alkylphenol polyoxyethylene-polyoxypropylene ether with the mass ratio of 1: 2: 2 at the temperature of 45-55 DEG C; the co-emulsifier is OP-10; the cosolvent is ethyl alcohol or isoamyl alcohol. The preparation method of the mefenacet microemulsion comprises the steps of preparing the compound emulsifier, evenly mixing the mefenacet active compound, the co-emulsifier, the cosolvent and the water, and dropwise adding the compound emulsifier under stirring. The mefenacet microemulsion takes the water as a main dispersion medium, thus being small in liquid drop diameter and good in dispersity; the mefenacet microemulsion can be used for well preventing broad leaf weeds and gramineous weeds, and can basically control the harm of paddy weeds in the whole season after being applied for once, so that contact harm is avoided, and environmental pollution is reduced.

Description

technical field [0001] The invention relates to a pesticide herbicide, especially a paddy field herbicide and its preparation. Background technique [0002] Farmland weeds are one of the main factors that have plagued farmers and restricted agricultural production for a long time. In order to eradicate the adverse effects of weeds on the agricultural production process, the research and development of various herbicides and formulations have become the key areas of research for agricultural scientists in various countries. [0003] Benfenacet, as an amide selective systemic herbicide, was developed by Bayer AG of Germany and was registered and produced in my country in 1998. The herbicide is an inhibitor of cell growth and division. It is mainly used for the control of grass weeds in transplanted rice fields. It has special effects on barnyard grass and most annual weeds in rice fields. The cost of medication is low. It is superior to quinclorac, comparable to butachlor, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N25/04A01N43/78A01N25/30A01P13/00
Inventor 李霁良董良飞张春生李永祥王琼苏卫华
Owner YUNNAN UNIVERSITY OF FINANCE AND ECONOMICS
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