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Method for producing dichlormide

A technology of dichloropropenamine and a production method is applied in chemical instruments and methods, preparation of carboxylic acid amides, preparation of organic compounds, etc., and can solve the problems of low operational safety, difficult popularization and application, large fixed investment and the like, Achieve the effect of high product content, prominent substantive characteristics and small fixed investment

Inactive Publication Date: 2008-03-12
邹平铭兴化工有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the main production method of producing dichloropropene mainly uses 3-chloropropene, cyanamide and dichloroacetyl chloride as raw materials for production. The disadvantages of this method are that the reaction yield of this method is low, the product content is low, the three wastes are high, and serious Pollution of the environment, large fixed investment, not easy to popularize and apply, high cost, low operational safety, long production cycle, etc.

Method used

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  • Method for producing dichlormide
  • Method for producing dichlormide
  • Method for producing dichlormide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Use a pump to put 226.7kg of ammonia water (concentration is about 15%) into the reaction kettle, and at the same time put 0.306kg of methylamine and 0.306kg of propylene from the large valve, and pump 153kg of 3-chloropropene into the dripping tank. Add 3-chloropropene dropwise under normal pressure. After the dropwise addition, slowly raise the temperature to 30-50°C, keep it warm for about 1 hour, then lower the temperature, put the material liquid into the still, and steam until the water phase appears to stop, that is, diallyl Crude amine, put the crude product of diallylamine into the rectification kettle to rectify diallylamine (the mixture of diallylamine, allylamine and triallylamine, the same below), diallylamine The base amine yield was 75% (calculated as 3-chloropropene, the same below), which was 72.75kg. Put the rectified diallylamine into the drip tank, pump 291kg of dichloroethane, 105kg of dichloroacetyl chloride, and 98.6kg of triallylamine into the re...

Embodiment 2

[0033] Use a pump to put 340kg of ammonia water (concentration is about 15%) into the reaction kettle, and at the same time, put 1.53kg of methylamine and 1.53kg of propylene from the large valve, pump 153kg of 3-chloropropene into the dripping tank, start stirring, normal temperature and pressure Add 3-chloropropene dropwise, after the dropwise addition, slowly raise the temperature to 30-50°C, keep it warm for about 1 hour, then lower the temperature, put the material liquid into the distillation kettle, and steam until the water phase appears to stop, that is, the crude product of diallylamine , put the crude product of diallylamine into a rectifying still to rectify diallylamine, and the yield of diallylamine is 75.2%, which is 72.9kg. Put the rectified diallylamine into the drip tank, pump 291.6kg of dichloroethane, 105kg of dichloroacetyl chloride, and 98.1kg of triallylamine into the reaction kettle, start stirring, and Slowly add diallylamine dropwise, and the temperat...

Embodiment 3

[0035] Use a pump to put 283.3kg of ammonia water (concentration is about 15%) into the reaction kettle, and at the same time, put 0.765kg of methylamine and 0.765kg of ethylene from the large valve, and pump 153kg of 3-chloropropene into the dripping tank, start stirring, and keep it at room temperature. Add 3-chloropropene dropwise under pressure. After the dropwise addition, slowly raise the temperature to 30-50°C, keep it warm for about 1 hour, then lower the temperature, put the material liquid into the distillation kettle, and steam until the water phase appears to stop, that is, diallylamine Crude product, put the crude product of diallylamine into a rectification kettle to rectify diallylamine, the yield of diallylamine is 75.1%, which is 72.8kg. Put the rectified diallylamine into the drip tank, pump 291kg of dichloroethane, 105kg of dichloroacetyl chloride, and 97.9kg of triallylamine into the reaction kettle, start stirring, and slowly Add diallylamine dropwise, and...

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Abstract

The present invention is a chemical synthesis method, a production method of the allyl dichloride amine. The technical proposal uses the two-step reaction; in the first step, the ammonia and the 3-allyl chloride react with the influence of the amine catalyst and the vinyl inhibitor to get the diallyl amine; in the second step, the diallyl amine and the dichloroacetyl chloride react to get the allyl dichloride amine. The allyl dichloride amine produced in the method has the advantages of the high content of the product, the little three-waste, the high production safety, the short production cycle and so on.

Description

technical field [0001] The invention belongs to the field of chemical synthesis, in particular to a production method of dichloroallylamine. Background technique [0002] Dichloroallylamine is a plant protection agent, also known as a herbicide safener. It can expand the application range of existing herbicides and selectively protect crops from herbicide damage without affecting the activity of herbicides on target weeds. For the herbicides with large dosages such as jundamil, butylate, and baimeng, dichloroallylamine is used as a plant protective agent to solve some weed problems during the growth period of corn, and it also has a protective effect on rice and wheat, reducing the The application cost is reduced, and the scope of application is increased. [0003] At present, the main production method of producing dichloropropene mainly uses 3-chloropropene, cyanamide and dichloroacetyl chloride as raw materials for production. The disadvantages of this method are that t...

Claims

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Application Information

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IPC IPC(8): C07C233/05C07C231/02
Inventor 李信
Owner 邹平铭兴化工有限公司
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