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Method and application of formate serving as raw material for synthesizing glycol aldehyde dipolymer and derivative thereof

A glycolaldehyde dimer, formate technology, applied in the preparation of organic compounds, chemical instruments and methods, preparation of hydroxyl compounds, etc., can solve problems such as difficult to understand chemical principles

Inactive Publication Date: 2017-09-19
李坚
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] But, about the present invention with the formate salt as raw material or the technical route of reagent preparation glycolaldehyde, do not see the report of any relevant literature and data so far, also seem to be difficult to make people understand from basic chemical principle, so, in In the column of background technology, it is necessary to explain the chemical principle of the method of the present invention and the corresponding background technology

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Choose an ordinary electric stirring reactor, install a reaction material circulation pump, and install a pipeline filter in series at the outlet of the circulation pump, the material flows through the circulation pump and filter from the outlet of the lower part of the reactor, and passes through the The upper inlet of the reactor flows into the reactor; input mass concentration is 99% sodium formate or potassium formate solid 300 grams, input mass concentration is 40-50% and KOH aqueous solution 1000 grams without other impurities at the same time, input pure zinc powder or pure 300 grams of active iron powder or pure active titanium powder, start the stirring and circulation pump, under the condition of open and normal pressure, control the temperature at 105°C-140°C, the time of continuous stirring and pump circulation is 4-8 hours, cool down to At room temperature, turn off the stirring and circulating pump, and the filter cake collected from the filter is a white g...

Embodiment 2

[0021] Select a common electric stirring reactor, put in 30 grams of glycolaldehyde dimer prepared by the above-mentioned embodiment 1, and put in 100 grams of KOH aqueous solution with a mass concentration of 20-40% and no other impurities at the same time, start stirring, Under the condition of high pressure, the temperature is controlled at 105°C-140°C, and the stirring is continued for 10 hours. At this time, most of the glycolaldehyde dimer is converted into ethylene glycol, cooled to room temperature, and then separated by the ordinary ion membrane electroosmosis method. Recover ethylene glycol and KOH to obtain about 29 grams of ethylene glycol with a content of 100%.

Embodiment 3

[0023]Select a common electric stirring reactor, put in 30 grams of glycolaldehyde dimer prepared by the above example 1, and put in 150 grams of potassium methylate or potassium ethylate solution with a mass concentration of 25% at the same time, or put in 20-40% without other Add 20 grams of impurity KOH aqueous solution and 150 grams of pure methanol or pure ethanol, start stirring, under the condition of open and normal pressure, control the temperature at 105°C-140°C, and continue stirring for 10 hours. At this time, the glycolaldehyde dimer is large Partial conversion to dimethoxyethane (ethylene glycol dimethyl ether) or diethoxyethane (ethylene glycol diethyl ether), followed by conventional distillation separation process to recover dialkoxyethane and KOH And ethylene glycol, the 1,2-dimethoxyethane (ethylene glycol dimethyl ether) of 100 percent content is about 20 grams, or the 1,2-diethoxyethane (ethylene glycol dimethyl ether) with 100 percent content Ethylene gly...

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PUM

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Abstract

The invention relates to a method for synthesizing a glycol aldehyde dipolymer and a derivative thereof by using formate as a raw material, and application of the formate to serving as the raw material for preparing the glycol aldehyde dipolymer and the derivative thereof. Compared with a conventional production technique of the glycol aldehyde dipolymer, the unique characteristics of the method are that sodium formate or potassium formate which is relatively low in price is adopted as the raw material, and is used for replacing acetaldehyde or glycerol which is relatively high in price in the prior art as the raw material for synthesizing the glycol aldehyde dipolymer and the derivative thereof; the method is essentially different from a technical route in the prior art; therefore, the production cost in the prior art is greatly decreased; particularly, the emission of a waste gas, waste water and a waste residue in the whole preparation process does not exist; therefore, an unknown novel purpose of the formate is also discovered.

Description

1. Technical field [0001] The invention relates to a method for synthesizing glycolaldehyde dimer and its derivatives by using formate as raw material, and the application of formate as a raw material for preparing glycolaldehyde dimer and its derivatives. Compared with the traditional production process of glycolaldehyde dimer, its unique feature is that it uses relatively cheap sodium formate or potassium formate as raw material, which is used to replace the relatively high price of acetaldehyde or glycerin in the prior art. Glycolaldehyde dimer and its derivatives are essentially different from the technical route of the prior art, so the production cost of the prior art is greatly reduced, especially the whole preparation process has no discharge of waste gas, waste water and waste residue, and also Thus a new use for an unknown formate was discovered 2. Background technology [0002] Glycolic aldehyde is the sugar molecule with the smallest molecular weight, and it is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D319/12C07C31/20C07C29/10C07C29/36C07C43/10C07C41/03C08G6/00
CPCC07C29/103C07C29/36C07C41/03C07D319/12C08G6/00C07C31/202C07C43/10
Inventor 李坚祝宏
Owner 李坚