CN104413013A - Preparation method of pyridaben - Google Patents
Preparation method of pyridaben Download PDFInfo
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- CN104413013A CN104413013A CN201310396428.8A CN201310396428A CN104413013A CN 104413013 A CN104413013 A CN 104413013A CN 201310396428 A CN201310396428 A CN 201310396428A CN 104413013 A CN104413013 A CN 104413013A
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- pyridaben
- organic solvent
- dehydration
- dehydrating
- preparation
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Abstract
The invention relates to a preparation method of pyridaben. The preparation method comprises the following steps of firstly, mixing an organic solvent and a wet product of pyridaben, distilling and dehydrating to prepare pyridaben; 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 pyridaben.
Background technology
Pyridaben 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 pyridaben, 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 pyridaben, and step is:
The first step, pyridaben preparation adopts the wet Product mix distillation dehydration of organic solvent and pyridaben.
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 pyridaben, step is:
The first step, pyridaben preparation adopts the wet Product mix distillation dehydration of organic solvent and pyridaben.
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.
Claims (1)
1. the outfit method of pyridaben, its characterization step is:
The first step, pyridaben preparation adopts the wet Product mix distillation dehydration of organic solvent and pyridaben;
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 |
|---|---|---|---|
| CN201310396428.8A CN104413013A (en) | 2013-09-04 | 2013-09-04 | Preparation method of pyridaben |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310396428.8A CN104413013A (en) | 2013-09-04 | 2013-09-04 | Preparation method of pyridaben |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104413013A true CN104413013A (en) | 2015-03-18 |
Family
ID=52963945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310396428.8A Pending CN104413013A (en) | 2013-09-04 | 2013-09-04 | Preparation method of pyridaben |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104413013A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113142235A (en) * | 2018-08-28 | 2021-07-23 | 侨昌现代农业有限公司 | Bactericide composition |
-
2013
- 2013-09-04 CN CN201310396428.8A patent/CN104413013A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113142235A (en) * | 2018-08-28 | 2021-07-23 | 侨昌现代农业有限公司 | Bactericide composition |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150318 |
|
| WD01 | Invention patent application deemed withdrawn after publication |