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Dimethoxymethane preparation process

A technique for preparing dimethoxymethane, which is applied in the preparation of organic compounds, chemical instruments and methods, organic chemistry, etc., can solve problems such as low production efficiency, high cost and complicated production process, and achieve increased yield , Improve work efficiency, overcome the effect of more processes

Inactive Publication Date: 2016-06-08
吕艳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the current synthesis process method of dimethoxyl group, the technical process is not easy to implement, the purity of the dimethoxymethane finished product is too low, the reaction residue cannot be recycled, the production process is complicated, the production efficiency is low and the cost is high. not suitable for mass production

Method used

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Experimental program
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Embodiment

[0011] The preparation technology of the dimethoxymethane of the present embodiment, comprises the following steps:

[0012] (1) adding the raw material methanol into the solvent, the mass proportion of methanol in the methanol-solvent mixture is 100%, and adding the raw material paraformaldehyde into the solvent and stirring;

[0013] (2) Add the catalyst to the above reaction system, according to the mass ratio, catalyst:methanol=0.15:1, and react for 5 hours at a reaction temperature of 50°C;

[0014] (3) Separating the reaction product to obtain the product dimethoxymethane.

[0015] The preparation process of dimethoxymethane does not require cumbersome post-reaction treatment, which greatly improves the product performance, and is environmentally friendly and pollution-free. The process is easy to implement, the production cost is low, and the synthesis yield is high, which better realizes the industrialization of the product. Production.

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PUM

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Abstract

The present invention discloses a dimethoxymethane preparation process, wherein methanol and paraformaldehyde are adopted as raw materials, an acid is adopted as a catalyst, a reaction is performed in an organic solvent in an intermittent reaction manner under stirring to generate dimethoxymethane, and separation is performed to obtain the azeotrope of methanol and dimethoxymethane or the high-purity dimethoxymethane. According to the present invention, the preparation process has characteristics of rapid reaction and high conversion rate, and is suitable for the organic chemical industry field.

Description

technical field [0001] The invention belongs to the technical field of chemical synthesis, and in particular relates to a preparation process of dimethoxymethane. Background technique [0002] The preparation process of dimethoxymethane includes at least basic processes such as filtration, separation, and drying. In the current synthesis process method of dimethoxyl group, the technical process is not easy to implement, the purity of the dimethoxymethane finished product is too low, the reaction residue cannot be recycled, the production process is complicated, the production efficiency is low and the cost is high. Not suitable for mass production. Contents of the invention [0003] In order to overcome the above-mentioned technical problems existing in the prior art field, the object of the present invention is to provide a preparation process of dimethoxymethane. The present invention not only has a simple production process and improves work efficiency, but also pr...

Claims

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Application Information

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IPC IPC(8): C07C43/30C07C41/56
Inventor 吕艳
Owner 吕艳
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