Suspension emulsion containing clomazone and propanil
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A technology of clomazone and suspoemulsion, applied in the direction of herbicides, algicides, biocides, biocides, etc., can solve problems such as reducing environmental pressure, achieve drug efficacy, system stability, and increase environmental safety Effect
Inactive Publication Date: 2014-07-02
WEIFANG CYNDA CHEM
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However, most of the compound formulations of clomazone and propanil are emulsifiable concentrates, and suspoemulsions have not been r
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Embodiment 1
[0016] Example 1: Preparation of 39% propanil·clomazone suspoemulsion
[0017] Propanil technical: 27%
[0018] Clomazone technical: 12%
[0019] Surfactant: 15%
[0020] Functional surfactant: 5.5%
[0021] Solvent: 15%
[0022] Water up to: 100%.
[0023] The surfactant described in this embodiment is a mixture of emulsifier, wetting agent and dispersant.
[0024] The production method of the suspoemulsion containing clomazone and propanil in this example is as follows: first, heat the propanil to 93 degrees to dissolve, add a surfactant, and prepare a stable propanil dispersion by hot-melt coagulation; The grass pine is dissolved in a solvent, and a certain amount of surfactant is added to prepare a stable emulsion; then the propanil dispersion system is added to the clomazone emulsion, sheared with a high-speed emulsifying shear, and functional additives are added A stable suspoemulsion was obtained.
Embodiment 2
[0025] Example 2: 40% propanil·clomazone suspoemulsion
[0026] Propanil technical: 20%
[0027] Clomazone technical: 20%
[0028] Surfactant: 18%
[0029] Functional surfactant: 3.5%
[0030] Solvent: 20%
[0031] Water up to: 100%.
[0032] The preparation method is the same as in Example 1.
Embodiment 3
[0033] Example 3: Accelerated storage experiment of 39% propanil·clomazone suspoemulsion
[0034] The experimental results are as follows:
[0035]
[0036] Note: 39% propanil·clomazone suspoemulsion was prepared according to the method described in Example 1.
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Abstract
The invention relates to the field of herbicides, and in particular discloses a suspension emulsion containing clomazone and propanil. The suspension emulsion containing the clomazone and the propanil is characterized by being prepared from a clomazone technical material, a propanil technical material, a surfactant, a functional auxiliary, a solvent and water according to a certain weight ratio. The suspension emulsion is easy to prepare, and a system is stable; an obtained suspension emulsion is mainly used for preventing and treating gramineous weeds such as field weeds as well as part of broad-leaf weeds of crops such as paddy rice; compared with the conventional emulsion of the same type, the suspension emulsion guarantees the medicinal effect, reduces the using amount of an organic solvent, and improves the environment safety.
Description
(1) Technical field [0001] The invention relates to the field of herbicides, in particular to a suspoemulsion containing clomazone and propanil. (2) Background technology [0002] Physical and chemical properties of clomazone: colorless transparent to light brown viscous liquid, melting point 25°C, boiling point 275°C, density 1.192 (20°C), vapor pressure 19.2mPa (25°C), solubility in water 1.1g / L (25°C) ℃), can be mixed with acetone, acetonitrile, chloroform, cyclohexanone, methylene chloride, methanol, toluene, etc., can be stored at room temperature for at least 2 years, and can be stored at 50 ℃ for 3 months. It is a conventional dosage form of emulsifiable concentrate. [0003] Physicochemical properties of propanil: colorless and odorless crystals, the original drug is brown crystals, melting point 92-93°C, vapor pressure 0.026mPa (20°C), 0.062mPa (25°C), density 1.41g / cm3 (22°C), solubility Water 130mg / L (25℃), isopropanol, dichloromethane>200, toluene 50-100,...
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