CN101803601A - Clodinafop-propargyl microemulsion and preparation method thereof - Google Patents
Clodinafop-propargyl microemulsion and preparation method thereof Download PDFInfo
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- CN101803601A CN101803601A CN201010151613A CN201010151613A CN101803601A CN 101803601 A CN101803601 A CN 101803601A CN 201010151613 A CN201010151613 A CN 201010151613A CN 201010151613 A CN201010151613 A CN 201010151613A CN 101803601 A CN101803601 A CN 101803601A
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Abstract
The invention relates to a clodinafop-propargyl microemulsion and a preparation method thereof; the microemulsion comprises the following components in percentage by weight: 1 to 50 percent of clodinafop-propargyl, 1 to 20 percent of solvent, 1 to 20 percent of cosolvent, 5 to 30 percent of emulsifier and 50 to 90 percent of water. First, the solvent, the cosolvent and the clodinafop-propargyl are uniformly stirred and mixed by weight percent at the rotating speed of 50 to 200r/min, and then are added with the emulsifier according to the ratio requirement to be uniformly stirred again, and finally are added with water to be continuously stirred for 1 to 2h, and the uniform and transparent solution product is prepared. The clodinafop-propargyl microemulsion of the invention is mainly used to cure tail alopecurus, wild oat, false oat, brachiaria, digitaria, barnyard grass, cricket grass, Italian ryegrass, chenopodium, general bluegrass, gold setaria, setaria, johnson grass, halepense and the like. The microemulsion of the invention not only can effectively improve the use efficiency of medicine, but also can reduce the pollution for the environment.
Description
Technical field
The present invention relates to a kind of agricultural chemicals Herbicidal microemulsion, relate to weed killer herbicide Clodinafop-propargyl microemulsion and preparation method thereof specifically.
Background technology
The chemical name of compound alkynes grass ester is 2-propynyl-(R)-2-4[4-(5-chloro-3-fluoro-2-pyridine oxygen base) phenoxy group] propionic ester.
Its structural formula is:
The English general Clodinafop-propargyl by name of alkynes grass ester, trade name has top weed killer herbicide, the wheat utmost point.CAS number: 105512-06-9 (105511-96-4) (105511-96-4).
Alkynes grass ester belongs to fragrant phenoxy propionic acid class weed killer herbicide by development of ciba-Geigy company and exploitation, and the biosynthesis that can effectively suppress the class ester is the auxilliary quick A hydroxylase inhibitors of acetyl, and this product is degraded to the free acid phenyl very soon in soil and pyridine moiety enters soil.Alkynes grass ester can effectively be prevented and kill off mouse tail amur foxtail, wild oat, unreal oat, arm shape grass, lady's-grass, barnyard grass grass, yard grass, Annual Ryegrass, lamb's-quarters, rough stalked blue grass, setaria glauca, green foxtail, Shi Mao and the false Chinese sorghum etc. in the wheatland.
The alkynes grass ester formulation that is used at present control of weed in wheat field on market mainly is a wetting powder.Wetting powder mainly is the formulations of pesticide that obtain through comminution by gas stream after being mixed by fillers such as alkynes grass ester, auxiliary agent and kaolin.Because the particle of wetting powder is thicker, thereby in use is with the surface of bigger particle attached to weeds, weeds are difficult for absorbing, and usage amount is bigger relatively, causes the loss of pesticide active ingredient more, easily environment is caused permanent pollution.The comminution by gas stream that the while wetting powder is adopted in process, the inevitable airborne dust that produces had both endangered the producer in actual production process, again the contaminated environment owing to the drift of airborne dust.Wetting powder in use also causes second environmental pollution owing to producing airborne dust.
No matter microemulsion all can not produce airborne dust in process of manufacture and in the use, reduced pollution to environment simultaneously thereby can reduce harm to the producer and user yet.
Summary of the invention
The purpose of this invention is to provide a kind of Clodinafop-propargyl microemulsion and preparation method thereof, by replace the preparation method of aromatic solvent to produce the microemulsion of alkynes grass ester with water, can improve alkynes grass ester in the fineness of emulsion, improve its herbicidal effect in actual applications, and improve the effective rate of utilization of alkynes grass ester simultaneously.Clodinafop-propargyl microemulsion of the present invention can effectively be prevented and kill off mouse tail amur foxtail, wild oat, unreal oat, arm shape grass, lady's-grass, barnyard grass grass, yard grass, Annual Ryegrass, lamb's-quarters, rough stalked blue grass, setaria glauca, green foxtail, Shi Mao and the false Chinese sorghum etc. in the wheatland.
Its composition of microemulsion provided by the invention is as follows according to weight ratio:
Alkynes grass ester is 1-50%, solvent 1-20%, cosolvent 1-20%, emulsifier 5-30%, water 50%-90%.
Adoptable solvent has acetone, cyclohexanone, dimethyl formamide, toluene and composition thereof.Adoptable cosolvent has alcohols, and particularly low-molecular-weight alcohols is as methyl alcohol, ethanol, propyl alcohol, butanols, isobutanol, ethylene glycol, propane diols, octanol and composition thereof.
Adoptable surfactant has anion surfactant and non-ionic surface active agent.It comprises alkylsurfuric acid salt, alkyl sulfonic acid alkali metal salt and amido, dialkyl group succinate sodium sulfonate salt, alkylphenol polyoxyethylene formaldehyde condensation products sulfonate, sodium sulfate of polyethenoxy ether of fatty alcohol alkyl polyoxyethylene ether sulfate, alkylnaphthalene sulfonate, fatty acid or fatty acid ester sulphate, alkylphenol polyoxyethylene and fatty alcohol-polyoxyethylene ether etc.That can give an example has farming newborn 2000 series, lignosulfonates, NNO, a dispersing agent MF etc.
The preparation method of Clodinafop-propargyl microemulsion of the present invention be according to weight ratio solvent, cosolvent, and alkynes grass ester under 50-200 rev/min rotating speed, mix, drop into the emulsifier of metering then, stir again, the water that adds metering at last, continue to stir 1-2 hour, can obtain Clodinafop-propargyl microemulsion.
Alkynes grass ester provided by the invention has following beneficial effect:
1, reduced environmental pollution, conventional wetting powder is easy to generate dust and contaminated environment owing to adopt mechanical crushing or comminution by gas stream in process of production, and the while in use is easy to generate the dust drift and causes the secondary pollution environment.And microemulsion adopts in process with water and replaces condiment etc. in the wetting powder, and process is airtight simultaneously, has reduced the pollution to environment.
2, improved drug effect, the particle of conventional wetting powder is generally at the 10-40 micron, and the oil droplet fineness of the sprinkling emulsion of preparing with microemulsion is the 0.001-0.01 micron.The microemulsion of this moment has been transparent true solution.Improve pesticide active ingredient alkynes grass ester dispersing uniformity, improved the availability of control efficiency and medicament.
Specific embodiment
Following examples describe the present invention in detail, and embodiment mainly is for the present invention is described but not is used for limiting the present invention.
Embodiment 1:
A kind of Clodinafop-propargyl microemulsion and preparation method thereof, it prepares earlier 2 kilograms of former medicines of alkynes grass ester, 5 kilograms of dimethyl formamides, 2 kilograms of n-butanols, 4 kilograms of non-ionic surface active agents, anion surfactant are as raw material.Then dimethyl formamide, n-butanol are mixed whole the adding in the reactor that has stirring, added the former medicine mixing of alkynes grass ester stir about again 1 hour, rotating speed is controlled at 50 rev/mins.Add non-ionic surface active agent again, anion surfactant continues to stir, and adds entry at last and complements to 20 kilograms, continue to stir 1 hour, makes it to become the homogeneous transparent solution product.
Embodiment 2:
A kind of Clodinafop-propargyl microemulsion and preparation method thereof, it prepares earlier 1 kilogram of former medicine of alkynes grass ester, 3 kilograms of dimethyl formamides, 3 kilograms of isobutanols, 3 kilograms of non-ionic surface active agents, anion surfactant are as raw material.Then dimethyl formamide, n-butanol are mixed whole the adding in the reactor that has stirring, added the former medicine mixing of alkynes grass ester stir about again 1 hour, rotating speed is controlled at 100 rev/mins.Add non-ionic surface active agent again, anion surfactant continues to stir, and adds entry at last and complements to 20 kilograms, continue to stir 2 hours, makes it to become the homogeneous transparent solution product.
Claims (5)
1. Clodinafop-propargyl microemulsion and preparation method thereof is characterized in that containing alkynes grass ester 1-50%, solvent 1-20%, cosolvent 1-20%, emulsifier 5-30%, water 50%-90% according to percentage by weight.
2. according to described a kind of Clodinafop-propargyl microemulsion of claim 1 and preparation method thereof, it is characterized in that solvent is acetone, cyclohexanone, dimethyl formamide, toluene and composition thereof.
3. according to described a kind of Clodinafop-propargyl microemulsion of claim 1 and preparation method thereof, it is characterized in that cosolvent is the low-molecular-weight alcohols, is methyl alcohol, ethanol, propyl alcohol, butanols, isobutanol, ethylene glycol, propane diols, octanol and composition thereof.
4. according to described a kind of Clodinafop-propargyl microemulsion of claim 1 and preparation method thereof, it is characterized in that emulsifier is anion surfactant and non-ionic surface active agent.
5. the preparation method of Clodinafop-propargyl microemulsion according to claim 1, it is characterized in that at first solvent, cosolvent and alkynes grass ester being mixed under 50-200 rev/min rotating speed, drop into emulsifier then, stir again, add entry at last and continue to stir 1-2 hour.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010151613A CN101803601A (en) | 2010-04-21 | 2010-04-21 | Clodinafop-propargyl microemulsion and preparation method thereof |
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| CN201010151613A CN101803601A (en) | 2010-04-21 | 2010-04-21 | Clodinafop-propargyl microemulsion and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104106569A (en) * | 2014-07-30 | 2014-10-22 | 安徽省四达农药化工有限公司 | Clodinafop-propargyl micro-emulsion, and preparation method and application method thereof |
| CN107593696A (en) * | 2017-10-13 | 2018-01-19 | 四川利尔作物科学有限公司 | Clodinafop-propargyl missible oil of high-efficiency environment friendly and its preparation method and application |
-
2010
- 2010-04-21 CN CN201010151613A patent/CN101803601A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104106569A (en) * | 2014-07-30 | 2014-10-22 | 安徽省四达农药化工有限公司 | Clodinafop-propargyl micro-emulsion, and preparation method and application method thereof |
| CN104106569B (en) * | 2014-07-30 | 2016-06-08 | 安徽省四达农药化工有限公司 | A kind of Clodinafop-propargyl microemulsion and preparation method thereof and application process |
| CN107593696A (en) * | 2017-10-13 | 2018-01-19 | 四川利尔作物科学有限公司 | Clodinafop-propargyl missible oil of high-efficiency environment friendly and its preparation method and application |
| CN107593696B (en) * | 2017-10-13 | 2018-09-14 | 四川利尔作物科学有限公司 | Clodinafop-propargyl missible oil of high-efficiency environment friendly and its preparation method and application |
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Application publication date: 20100818 |