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85 results about "Bromoxynil octanoate" patented technology

Bromoxynil octanoate, along with bromoxynil butyrate were sprayed on the ponds; sampling showed that bromoxynil octanoate persisted in the surface microlayer (0-1 mm) with half-lives of 0.8-2.5 hours(5).

Preparation method of high-purity bromoxynil octanoate

ActiveCN108569985ASolve the problem of large steric resistance and weaker reactivity than phenolic hydroxylReaction is easy to controlCarboxylic acid nitrile preparationOrganic compound preparationBromoxynil octanoateBromine
The invention discloses a preparation method of high-purity bromoxynil octanoate. According to a reaction sequence, the preparation method successively comprises bromination reaction and esterification reaction steps, and comprises the following steps: adding water and cyanophenol into a reaction container, and dropwise adding hydrogen peroxide and bromine, controlling a dropwise adding temperature to be 20-100 DEG C, heat-insulating reacting for 1-2 hours, sampling, after the reaction is qualified, adding sodium carbonate to break the excessive hydrogen peroxide, and then adding a solvent, dropwise adding caustic soda liquid and caprylyl chloride simultaneously, controlling a reaction temperature to be 0-50 DEG C, after dropwise adding, heat-insulating reacting for 1-2 hours, sampling, controlling by neutralizing, washing by the water after qualified, recovering the solvent, sampling and detecting, discharging and barreling after qualified. The bromination is firstly performed, and the esterification is performed in the reaction. The reaction is controllable. Existing problems that the esterification reaction is firstly performed so that the space resistance of an octoate group islarge and the reaction activity thereof is weaker than the reaction activity of a phenolic hydroxyl group are solved. The bromination is also performed firstly without using an expensive catalyst, and excessive caprylyl chloride does not need to be recovered by warming at the same time, so the recovery difficulty is reduced.
Owner:JIANGSU HEBEN BIOCHEM

Pinoxaden and bromoxynil octanoate compound emulsifiable concentrate and preparation method thereof

The invention provides a pinoxaden and bromoxynil octanoate compound emulsifiable concentrate and a preparation method thereof, and relates to the technical field of prevention and control of annual broad-leaf weeds in wheat fields. According to the present invention, 100 parts of the pinoxaden and bromoxynil octanoate compound emulsifiable concentrate is prepared at least from 5 parts of pinoxaden, 25 parts of bromoxynil octanoate, 7.5 parts of tristyrylphenol polyoxyethylene ether, 7.5 parts of distyrylphenol formaldehyde condensation compound polyoxyethylene ether, 15 parts of calcium dodecylbenzenesulfonate, and the balance of xylene; pinoxaden and bromoxynil octanoate are added to xylene, stirring is performed until both materials are dissolved, the remaining raw materials are added, uniform stirring and mixing are performed through a reaction kettle, sampling is performed and the content is analyzed, standing is performed after the qualified standard is achieved, filtration and packaging are performed, sampling is performed again and the content is analyzed, and warehousing is performed after the qualified standard is achieved; and the obvious synergistic effect can be provided when the 30% pinoxaden and bromoxynil octanoate compound emulsifiable concentrate is subjected to mixing use according to the ratio of 1:5 while the obvious synergistic effect cannot be achieved with the other preparations being subjected to the mixing use according to a certain ratio.
Owner:ANHUI MEILAND AGRI DEV
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