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3-ú¿2-methoxyethoxyú®-propylamine production process

A technology of methoxyethoxy and production process, which is applied in the field of chemical synthesis of 3--propylamine, and achieves the effects of mild operating conditions, good product purity and high yield

Inactive Publication Date: 2008-05-07
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It can be used not only as an important intermediate for the synthesis of disperse dyes such as disperse turquoise blue S-GL, but also as a new type of corrosion inhibitor and ionizing emulsifier introduced from abroad. It has been gradually popularized and applied in the petrochemical industry, but there is no domestic manufacturer Production

Method used

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Embodiment Construction

[0013] 1. Main raw materials:

[0014] Industrial ethylene glycol monomethyl ether (concentration ≥ 95%); industrial acrylonitrile (purity ≥ 98%); sodium methoxide, hydroquinone, concentrated H 2 SO 4 , hydrogen, ammonia

[0015] 2. Condensation reaction:

[0016] Add 410kg of ethylene glycol monomethyl ether, 5kg of sodium methoxide, and 0.33kg of hydroquinone into the container. After fully stirring, slowly add 284kg of acrylonitrile dropwise within 3 hours. The feed ratio of ethylene glycol monomethyl ether and acrylonitrile is 1 mol: 1.05 mol, during which the reaction temperature was kept at 25°C to 30°C. After the dropwise addition, continue to keep warm for 1 hour, and measure the end point with a gas chromatograph. The control index of the end point is that the content of acrylonitrile is ≤1%. If the end point is not reached, continue to keep warm.

[0017] 3. Distillation:

[0018] After acrylonitrile has reacted substantially completely, add about 2kg concentra...

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Abstract

The invention relates to a process for the chemical synthesis of 3-(2-methoxyethoxy)propylamine, which comprises the steps of condensation reaction, distillation and hydrogenation reaction, the end product has good purity, high yield and low depreciation of raw materials.

Description

technical field [0001] The present invention relates to a method for chemically synthesizing 3-(2-methoxyethoxy)-propylamine. Background technique [0002] 3-(2-methoxyethoxy)-propylamine is a widely used primary amine compound. It can be used not only as an important intermediate for the synthesis of disperse dyes such as disperse turquoise blue S-GL, but also as a new type of corrosion inhibitor and ionizing emulsifier introduced from abroad. It has been gradually popularized and applied in the petrochemical industry, but there is no domestic manufacturer Production. Therefore, the synthesis of 3-(2-methoxyethoxy)-propylamine has very important practical significance. After consulting a large number of documents, it is determined that its synthetic method is: ethylene glycol monomethyl ether and acrylonitrile are produced through addition condensation reaction under the action of a catalyst to produce 3-(2-methoxyethoxy)-propionitrile, and then in Reduction of the nitri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C217/08C07C213/02
Inventor 张存
Owner YANGZHOU UNIV
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