Synthesis method of ethoxylated tetrahydrofurfuryl alcohol

A technology of ethoxylated tetrahydrofurfuryl alcohol and a synthesis method, which is applied in the synthesis field of ethoxylated tetrahydrofurfuryl alcohol, can solve the problems of increasing environmental pollution, affecting downstream application performance, difficult color and luster, and improving production efficiency , the effect of shortening synthesis time and reducing energy consumption

Inactive Publication Date: 2019-02-26
3 Cites 0 Cited by

AI-Extracted Technical Summary

Problems solved by technology

However, because it uses a strong base as a catalyst, the resulting product has a deep color and is not easy to control, which affects its...
View more

Method used

Comparative example is compared with embodiment 6 synthesis process, has many three steps of dehydration step, acetone solvent extraction step and glacial acetic acid neutralization, is numerous and diverse than this patent method, many reaction time and operation are many, therefore increase production cost. And adopting solvent method has increased the pressure of...
View more


The invention relates to a synthesis method of ethoxylated tetrahydrofurfuryl alcohol, wherein the synthesis method comprises the following steps: 1) firstly, putting a Lewis acid catalyst into a high-pressure reaction kettle, and then replacing air in the kettle with nitrogen gas; 2) then pressing tetrahydrofurfuryl alcohol into the reaction kettle in a pipeline manner; 3) opening stirring and steam heating, and heating a reaction material to 30-80 DEG C; 4) introducing ethylene oxide with the amount 1-20 times the molar number of tetrahydrofurfuryl alcohol into the reaction kettle; and 5) carrying out reaction until the pressure in the reaction kettle remains unchanged, removing residual trace ethylene oxide in the reaction kettle, and discharging. The synthesis method has the beneficialeffects: 1, with the use of the Lewis acid catalyst obtained from one or two combinations of anhydrous zinc chloride and anhydrous aluminum chloride, the reaction efficiency can be effectively improved, the synthesis time is shortened, the production efficiency is improved, and the synthesized product has light color and luster; and 2, the method does not use acetone or other solvents in the synthesis process so as to reduce the impact on the ecological environment and reduce energy consumption.

Technology Topic

Nitrogen gasSynthesis methods +12


  • Experimental program(1)

Example Embodiment

[0043] (Refer to Example 2 in Patent CN 103435795 A)
[0044] 1) Add 102g of tetrahydrofurfuryl alcohol, 3.0g of solid sodium hydroxide, and 100g of acetone into the reaction kettle, vacuum with a vacuum pump, and use N 2 After that, the air in the reactor was removed and replaced for three times. After the vacuum degree was ≥-0.02Mpa, the temperature was raised to 58℃ and the steaming liquid was collected. The dehydration temperature was 100℃. After the collected liquid was tested, the water was evaporated ≥1.0g, stop pumping Vacuum, close the vacuum valve; 2) Start adding ethylene oxide continuously, control the reaction temperature at 60-80°C, the pressure in the reactor at 0.1-0.55Mpa, and add 440g of ethylene oxide in total. After the addition, the heat preservation continues to react until the pressure no longer changes. After the reaction is completed, the low-boiling substance is removed by vacuum, and 3.1 g of glacial acetic acid is added at a temperature of 60-100° C. to neutralize for 10 minutes and then the material is discharged.
[0045] Compared with the synthesis process of Example 6, the comparative example has three more steps: dehydration step, acetone solvent removal step and glacial acetic acid neutralization, which is more complicated than the method of the patent, and has a lot of reaction time and process, thus increasing production cost. In addition, the use of the solvent method increases the pressure on environmental protection and also increases the production cost. From the product index point of view: the color of the comparative product is No. 40 (color measurement by platinum-cobalt method), and the color of the sample of Example 6 is No. 18, which is obviously better than the color of the comparative product.


no PUM

Description & Claims & Application Information

We can also present the details of the Description, Claims and Application information to help users get a comprehensive understanding of the technical details of the patent, such as background art, summary of invention, brief description of drawings, description of embodiments, and other original content. On the other hand, users can also determine the specific scope of protection of the technology through the list of claims; as well as understand the changes in the life cycle of the technology with the presentation of the patent timeline. Login to view more.

Similar technology patents

Coal gasification wastewater treatment apparatus

ActiveCN109292962AImprove reaction efficiency

Aqueous phase preparation method of maleic anhydride-conjugated diene copolymer

ActiveCN109160974AImprove reaction efficiencyInitiation efficiency is high

Classification and recommendation of technical efficacy words

  • short synthesis time
  • Improve reaction efficiency

Solid phase synthesis method for thymosin beta 4

InactiveCN101412755Ashort synthesis timeLess impurities

Method for preparing Mg2Si powder by semi-solid-state reaction

InactiveCN101264890Afast responseshort synthesis time

Process for synthesizing mesoporous silicon oxide molecular sieve material by ultrasonic system

InactiveCN1342605AReduce the difficulty of synthesisshort synthesis time

Preparation method and application of polymeric phosphato aluminum iron chloride coagulant

InactiveCN103191684AHeating up fastshort synthesis time
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products