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Preparation technology of 2, 4-diamino-phenoxyethanol hydrochloride

A diaminophenoxyethanol hydrochloride, a manufacturing process technology, applied in 2 fields, can solve problems such as waste of filter materials, and achieve the effects of protecting the environment, saving costs, and reducing waste

Active Publication Date: 2013-11-20
辽宁新宇生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Purpose of the invention: the purpose of the present invention is to solve the prior art without specific 2,4-diaminophenoxyethanol hydrochloride manufacturing process, and the waste of the existing manufacturing process filter material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Producing 2,4-diaminophenoxyethanol hydrochloride

[0022] 1) Condensation section

[0023] Turn on the vacuum system, suck 400kg of ethylene glycol into the pot, start stirring again, inhale 160kg of pre-melted 2,4-dinitrochlorobenzene, and then inhale 200kg of ethylene glycol again, keeping the temperature at 60°C; open the manhole, and put 45kg Put sodium carbonate into the kettle, cover the manhole, open the vent valve, turn on the water flushing pump to evacuate the inside of the kettle; open the jacket steam valve, and then open the bypass valve of the steam trap to drain water, when all the condensed water is drained , and then switch to a steam trap; keep the temperature at 100°C and the pH value at 7.5, drain the carbon dioxide and turn off the water flushing pump, and stir for 4 hours; after the heat preservation reaction is over, take a sample for TLC analysis and pass it, add 1000kg of water, raise the temperature to 90°C, and stir 1 hour; stand still for 3...

Embodiment 2

[0029] Producing 2,4-diaminophenoxyethanol hydrochloride

[0030] 1) Condensation section

[0031] Turn on the vacuum system, suck 400kg of ethylene glycol into the pot, then start stirring, suck in 160kg of pre-melted 2,4-dinitrochlorobenzene, and then suck in 200kg of ethylene glycol again, keeping the temperature at 70°C; open the manhole, and put 45kg Put sodium carbonate into the kettle, cover the manhole, open the vent valve, turn on the water flushing pump to evacuate the inside of the kettle; open the jacket steam valve, and then open the bypass valve of the steam trap to drain water, when all the condensed water is drained , and then switch to a steam trap; keep the temperature at 120 ° C, pH value 7.5, drain the carbon dioxide and turn off the water flushing pump, and stir for 5 hours; after the heat preservation reaction is completed, after the sample is qualified for TLC analysis, add 1000 kg of water, heat up to 92 ° C, and stir 1 hour; stand still for 30 minutes...

Embodiment 3

[0037] Producing 2,4-diaminophenoxyethanol hydrochloride

[0038] 1) Condensation section

[0039] Turn on the vacuum system, inhale 400kg of ethylene glycol into the pot, then start stirring, inhale 160kg of pre-melted 2,4-dinitrochlorobenzene, and then inhale 200kg of ethylene glycol again, keeping the temperature at 80°C; open the manhole, and inhale 45kg Put sodium carbonate into the kettle, cover the manhole, open the vent valve, turn on the water flushing pump to evacuate the inside of the kettle; open the jacket steam valve, and then open the bypass valve of the steam trap to drain water, when all the condensed water is drained , and then switch to a steam trap; keep the temperature at 140°C and the pH value at 8, drain the carbon dioxide and turn off the water flushing pump, and stir for 6 hours; after the heat preservation reaction is over, after the sample is qualified for TLC analysis, add 1000kg of water, raise the temperature to 95°C, and stir 2 hours; stand stil...

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PUM

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Abstract

The invention discloses a preparation technology of 2, 4-diamino-phenoxyethanol hydrochloride. The preparation technology is characterized in that 2, 4-dinitrochlorobenzene serving as a main raw material is subjected to condensation with glycol under an alkaline condition, then is hydrogenated and finally is salified with hydrochloric acid to obtain the 2, 4-diamino-phenoxyethanol hydrochloride. The preparation technology comprises a condensation working section, a hydrogenation reduction working section and a salt formation and precipitation working section. The preparation technology disclosed by the invention has the advantages that part of materials are recycled and reused, the amount of generated waste materials is reduced, the clean production is realized, the cost is saved, and the yield is high and stable.

Description

[0001] technical field [0002] The invention relates to a production process of hydrochloride, in particular to a production process of 2,4-diaminophenoxyethanol hydrochloride. Background technique [0003] 2,4-Diaminophenoxyethanol hydrochloride is mainly used as hair dye or pharmaceutical intermediate, and is widely used in real life. [0004] But the existing 2, the manufacturing process system of 4-diaminophenoxyethanol hydrochloride is not complete, and the materials used are all disposable, which cannot be recycled and reused, resulting in a lot of waste. Chemical properties, resulting in pollution to the environment. Contents of the invention [0005] Purpose of the invention: the purpose of the present invention is to solve the problem that the prior art does not have a specific 2,4-diaminophenoxyethanol hydrochloride manufacturing process, and the existing manufacturing process filter material waste. [0006] Technical solution: The present invention provides t...

Claims

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Application Information

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IPC IPC(8): C07C217/84C07C209/36
Inventor 袁顺福宗凯袁郡范琳俞志平
Owner 辽宁新宇生物科技有限公司
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