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Dispersible suspending agent containing atrazine and topramezone as well as preparation method and application of dispersible suspending agent

A technology of oxentrazone and oxentrazone, which is applied in the field of atrazine oxentrazone dispersible suspension concentrate and its preparation, can solve the problems of Oswald ripening, lack of weeding effect, and easy water bottom formation and other problems, to achieve the effect of improving lipophilicity and improving biological characteristics

Pending Publication Date: 2022-04-08
SHANDONG DEHAO CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the pesticides containing fentrazone and atrazine have the problems of poor dispersion stability, Oswald ripening and easy water bottoming. When using drones to spray pesticides, they are prone to sedimentation and aggregation, which will block the nozzle and cannot effectively adhere to the plant surface. , can not achieve good herbicidal effect, the main reason is that there are different defects in the selection of adjuvants and fillers

Method used

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  • Dispersible suspending agent containing atrazine and topramezone as well as preparation method and application of dispersible suspending agent
  • Dispersible suspending agent containing atrazine and topramezone as well as preparation method and application of dispersible suspending agent
  • Dispersible suspending agent containing atrazine and topramezone as well as preparation method and application of dispersible suspending agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A dispersible suspension concentrate of atrazine and oxaflumezone, comprising the following components in parts by weight: 20 parts of atrazine, 0.5 parts of oxentrazone, 5-bromo-1-(difluoromethyl)-1H- 0.1 part of indazole, 10 parts of methyl oleate, 1 part of surfactant, 1 part of defoamer, 0.5 part of thickener, and 1 part of spray aid. Wherein, the surfactant is alkylphenol polyoxyethylene ether, the defoamer is silicone, and the thickener is xanthan gum.

[0029] The spray aid is prepared by the following method: add 57 parts of maleic anhydride and 6 parts of potassium persulfate to the reactor, then add distilled water, stir to dissolve it, and slowly add 26 parts of acrylic acid dropwise; control the temperature At about 75°C, the synthesis experiment was carried out according to free radical polymerization, the reaction time was 3h, and finally the target copolymer was obtained; the resulting solution was stirred and cooled to room temperature, and 4% sodium ole...

Embodiment 2

[0032] The difference from Example 1 is that the formulation of the dispersible suspending agent is: 30 parts of atrazine, 2 parts of fenflumezone, 0.5 part of 5-bromo-1-(difluoromethyl)-1H-indazole, oil 15 parts of methyl ester, 2 parts of surfactant, 2 parts of defoamer, 2 parts of thickener, and 2 parts of spray aid. Wherein, the surfactant is fatty alcohol polyoxyethylene ether, and the thickener is hydroxymethyl cellulose, see Table 1 for details.

Embodiment 3

[0034] The difference from Example 1 is that the formulation of the dispersible suspending agent is: 24 parts of atrazine, 0.5 part of fenflumezone, 0.3 part of 5-bromo-1-(difluoromethyl)-1H-indazole, oil 12 parts of methyl ester, 1 part of surfactant, 1 part of defoamer, 0.5 part of thickener, and 1 part of spray aid. Wherein, the surfactant is tallow amine polyoxyethylene ether, and the thickener is xanthan gum, see Table 1 for details.

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Abstract

The invention relates to an atrazine topramezone dispersible suspending agent. The dispersible suspending agent is prepared from the following components in parts by weight: 20 to 30 parts of atrazine, 0.5 to 2 parts of topramezone, 0.1 to 0.5 part of 5-bromo-1-(difluoromethyl)-1H-indazole, 10 to 15 parts of methyl oleate, 1 to 2 parts of a surfactant, 1 to 2 parts of a de-foaming agent, 0.5 to 2 parts of a thickening agent and 1 to 2 parts of a spray additive. According to the invention, by adding the components such as the spray auxiliary agent, the volatilization and drifting loss of the liquid medicine are reduced, the deposition amount of fog drops on leaf surfaces is increased, the effect is improved, and the 5-bromo-1-(difluoromethyl)-1H-indazole is introduced, so that the pesticide effect is further improved.

Description

technical field [0001] The present invention relates to the technical field of pesticide compounding, in particular to a dispersible suspension of atrazine-oxentrazone and its preparation method and application. Background technique [0002] Benfentrazone, chemical name: 4-[3-(4,5-dihydroisoxazol-3-yl)-2-methyl-4-methylsulfonyl]-1-methyl-5-hydroxyl -1H-pyrazole. Belongs to benzoylpyrazolone selective herbicides, post-emergence stem and leaf treatment is absorbed through roots, seedlings, and leaves, and is transmitted to the top and base of plants to meristems, inhibiting 4-HPPL and plastoquinone And indirectly inhibits carotenoid biosynthesis, disrupts chloroplast function, and ultimately kills weeds. Fenmetrazone can effectively control grass and broad-leaved weeds in cornfields, especially for grass weeds. [0003] Atrazine, chemical name: 2-chloro-4-ethylamino-6-isopropylamino-1,3,5-triazine. It is a triazine systemic selective pre-emergence and post-emergence closed...

Claims

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Application Information

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IPC IPC(8): A01N43/80A01N43/70A01N43/56A01N25/04A01N25/06A01N25/30A01P13/00C07D231/56
Inventor 王铭赵守明张彩绳继增
Owner SHANDONG DEHAO CHEM
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