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Method for synthesizing diethylaminoethanol

A technology of diethylaminoethanol and diethylamine, which is applied in chemical instruments and methods, preparation of organic compounds, preparation of amino hydroxy compounds, etc., can solve the difficulty of affecting the color of products, the difficulty of separation and purification of diethylaminoethanol products, and the removal of In addition to other problems, it can reduce the energy consumption of rectification, improve the selectivity, and achieve the effect of light color.

Inactive Publication Date: 2015-06-24
LIAONING OXIRANCHEM INC
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

The selectivity of the diethylaminoethanol product will directly affect the difficulty of separation and purification in the later stage, and at the same time affect the color of the product
However, under the Lewis acid catalyst system, ethylene oxide is prone to react to obtain by-products such as carcinogen dioxane with a high content, and the acidic catalyst in the reaction system needs to be removed

Method used

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  • Method for synthesizing diethylaminoethanol
  • Method for synthesizing diethylaminoethanol
  • Method for synthesizing diethylaminoethanol

Examples

Experimental program
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Embodiment 1

[0034] In the microreactor (containing two inlets) connected in series with five microreactor units, diethylamine is used as fluid A, and ethylene oxide is used as fluid B, and the two are mixed and reacted in the microreactor. The microreactor is placed in a bath at a certain temperature, the temperature is adjusted through the outer wall of the microreactor unit, and the pressure of the reaction system is adjusted through the back pressure valve. The microreactors of Examples 1.1 to 1.10 comprise a reaction zone of 20 ml and have a minimum cross-sectional equivalent diameter of 0.05 mm. Fluid A was added from the first microreactor unit, and fluid B was added from the first and second microreactor units at an equal flow rate, and the conversion rate and The selectivity of diethylaminoethanol (calculated by the area normalization method), finally obtains the diethylaminoethanol product through decompression degassing. The specific experimental conditions and results are show...

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Abstract

The invention provides a method for synthesizing diethylaminoethanol, which comprises the following steps: adding diethylamine and epoxyethane into a micro-reactor, and carrying out ethoxylation to obtain the diethylaminoethanol product, wherein the micro-reactor is provided with a plurality of microchannels of which the cross section equivalent diameter is 0.02-4mm. The method does not need to add any catalyst, does not generate the byproduct dioxane, can enhance the selectivity of diethylaminoethanol and lowers the rectification energy consumption. The obtained diethylaminoethanol product has light color.

Description

technical field [0001] The invention relates to an ethoxylation reaction, in particular to a method for synthesizing diethylaminoethanol. Background technique [0002] Diethylaminoethanol hexanoate (DA-6), is an alternative product of plant growth regulators gibberellins, nitro compounds, naphthalene rings, adenines, etc. A revolution in plant growth regulators. DA-6 was first discovered in the early 1990s, and it is highly respected in the international academic circles. It has high biological activity. Tests at home and abroad have proved that DA-6 is a high-efficiency plant growth substance, which can significantly increase yield, stress resistance, disease resistance, improve quality, and early maturity for various crops. DA-6 is non-toxic, has no side effects, no residue, and has good compatibility with the ecological environment, which is not available in other plant growth promoters. It can be compounded with various elements and can also be used in combination with...

Claims

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Application Information

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IPC IPC(8): C07C215/08C07C213/04
Inventor 朱建民刘兆滨董振鹏周立明李雪峰
Owner LIAONING OXIRANCHEM INC
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