CN104412992A - Preparation method of clofentezine - Google Patents
Preparation method of clofentezine Download PDFInfo
- Publication number
- CN104412992A CN104412992A CN201310395814.5A CN201310395814A CN104412992A CN 104412992 A CN104412992 A CN 104412992A CN 201310395814 A CN201310395814 A CN 201310395814A CN 104412992 A CN104412992 A CN 104412992A
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- CN
- China
- Prior art keywords
- clofentezine
- organic solvent
- dehydration
- dehydrating
- preparation
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Agricultural Chemicals And Associated Chemicals (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention relates to a preparation method of clofentezine. The preparation method comprises the following steps of firstly, mixing an organic solvent and a wet product of clofentezine, distilling and dehydrating to prepare clofentezine; secondly, distilling and dehydrating through spray heating or membrane evaporator heating by taking the solvent as a carrier to realize the continuous operation of a dehydration process as well as wet-process smashing, blending and packaging processes; and thirdly, simultaneously finishing the operation of complexing maneb and zinc in the organic solvent and the process of dehydrating for crystal transformation. Due to the implementation of the third step, the decomposition of a product is reduced, the harmful impurity and dust pollution is reduced, and a fire accident generated in a product drying process is avoided.
Description
Technical field
The invention belongs to chemical technology field, be specifically related to a kind of outfit method of clofentezine.
Background technology
Clofentezine sterling is white powder, industrial goods are canescence or pale yellow powder, there is rotten-egg odour, be insoluble in water, be insoluble to most of organic solvent, but can be dissolved in pyridine, to light, heat, moist instability, easily decomposite carbon disulphide, chance alkaline matter or the material such as copper, mercury all easily decompose releases carbon disulphide and subtracts effect, and volatility is little.So-called protection, exactly for plant provides Zn element, except solving the symptom of scarce zinc, strengthens the ability of opposing disease, thus relatively plays bactericidal action to plant.
Summary of the invention
The present invention proposes a kind of outfit method of clofentezine, and bactericidal range of the present invention extensively, not easily produces resistance, and control efficiency is obviously better than other same series bactericidal agents.Technical scheme is: with the method for clofentezine, and step is:
The first step, clofentezine preparation adopts the wet Product mix distillation dehydration of organic solvent and clofentezine.
Second step take solvent as carrier through spraying heating or through kestner long-tube evaporator heating distillation dehydration, can make dehydration procedure and wet pulverizing, modulation, packaging process continued operation.
3rd step, maneb and zinc in organic solvent complexing complete with a dehydration turn brilliant operation simultaneously
3rd step decreases the decomposition of product, reduces the pollution of objectionable impurities and dust, avoids the generation of firing accident in product drying process.Solvent method dewatering speed of the present invention is fast, and production safety efficiency is high, and simplifies production technology.
Embodiment:
The outfit method of clofentezine, step is:
The first step, clofentezine preparation adopts the wet Product mix distillation dehydration of organic solvent and clofentezine.
Second step take solvent as carrier through spraying heating or through kestner long-tube evaporator heating distillation dehydration, can make dehydration procedure and wet pulverizing, modulation, packaging process continued operation.
3rd step decreases the decomposition of product, reduces the pollution of objectionable impurities and dust, avoids the generation of firing accident in product drying process.Solvent method dewatering speed of the present invention is fast, and production safety efficiency is high, and simplifies production technology.
3rd step, maneb and zinc in organic solvent complexing complete with a dehydration turn brilliant operation simultaneously.
Claims (1)
1. the outfit method of clofentezine, its characterization step is:
The first step, clofentezine preparation adopts the wet Product mix distillation dehydration of organic solvent and clofentezine;
Second step take solvent as carrier through spraying heating or through kestner long-tube evaporator heating distillation dehydration, can make dehydration procedure and wet pulverizing, modulation, packaging process continued operation;
3rd step, maneb and zinc in organic solvent complexing complete with a dehydration turn brilliant operation simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310395814.5A CN104412992A (en) | 2013-09-04 | 2013-09-04 | Preparation method of clofentezine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310395814.5A CN104412992A (en) | 2013-09-04 | 2013-09-04 | Preparation method of clofentezine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104412992A true CN104412992A (en) | 2015-03-18 |
Family
ID=52963924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310395814.5A Pending CN104412992A (en) | 2013-09-04 | 2013-09-04 | Preparation method of clofentezine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104412992A (en) |
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2013
- 2013-09-04 CN CN201310395814.5A patent/CN104412992A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150318 |