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Применить Всего найдено 2. Отображено 2.
05-05-2023 дата публикации

Emulsion in water containing acetamiprid and lambda-cyhalothrin and preparation method thereof

Номер: CN116058366A
Автор: LI ZHIQING, ZENG QINGLEI, TIAN MAOYING, FAN CUNMEI, WANG JIANWEI
Принадлежит:

The invention discloses an emulsion in water containing acetamiprid and lambda-cyhalothrin and a preparation method of the emulsion in water. The emulsion in water is prepared from the following components in parts by weight: 10-100g/L of an active component, 60-120g/L of an emulsifier, 100-200g/L of a solvent, 50-150g/L of a cosolvent, 1-10g/L of a thickening agent, 0.5-2g/L of a defoaming agent, 3-10g/L of an anti-freezing agent, 1-2g/L of a pH regulator, 1-2g/L of a preservative and the balance of water, wherein the mass ratio of the acetamiprid to the lambda-cyhalothrin is (1-20): 1. The emulsion in water disclosed by the invention has strong long-term stability, can tolerate a high-low temperature interval from 0 DEG C to 54 DEG C, effectively reduces or solves the influence of environmental change on the stability of a dosage form in a transportation process, reduces or avoids the product quality problems of dosage form layering or sedimentation, flocculation, coalescence, crystal ...

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Номер записи: 1
08-10-2014 дата публикации

Improved preparation method of 3,6-dichloro salicylic acid

Номер: CN104086393A
Автор: SUN GUOQING, HOU YONGSHENG, CHEN GUIYUAN, GAO GUOLI, ZHANG FUMIN, TAN JIANGUO, SUN TIANWEI, YANG QINGLIN, LI QI, FAN CUNMEI, XING SEN
Принадлежит:

The invention discloses an improved preparation method of 3,6-dichloro salicylic acid. The improved preparation method of 3,6-dichloro salicylic acid comprises the following steps: carrying out reaction on 2,5-dichlorophenol and an alkali liquor, then adding an organic solvent, and carrying out reduced pressure dehydration; adding potassium carbonate, a dehydrating agent and a stabilizer after dehydration is finished, and carrying out reaction at the temperature of 130-140 DEG C for 30-60 minutes; adding materials into a high pressure autoclave, heating to 130-140 DEG C, then introducing CO2, and carrying out high pressure carboxylation reaction; carrying out aftertreatment after the reaction is finished, so that 3,6-dichloro salicylic acid is obtained. The improved preparation method of 3,6-dichloro salicylic acid has the advantages that oxygen is isolated before dehydration and carboxylation, so that oxidation of oxygen to a product is avoided; the dehydrating agent and the stabilizer ...

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Номер записи: 2