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
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Embodiment 2
[0044] 1) Add tetrahydrofurfuryl alcohol 102g, solid sodium hydroxide 3.0g, acetone 100g in the reaction kettle, vacuumize with vacuum pump, adopt N 2 After that, remove the air in the reactor and replace it three times, then raise the temperature to 58°C under the vacuum degree ≥ -0.02Mpa and start collecting the distilled liquid. Vacuum, close the vacuum valve; 2) start to add ethylene oxide continuously, control the reaction temperature at 60-80°C, and the pressure in the reactor at 0.1-0.55Mpa, add 440g of ethylene oxide in total. After adding, keep warm and continue to react until the pressure no longer changes. After the reaction is completed, low-boiling substances are 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 before discharging.
[0045] Compared with the synthesis process of Example 6, the comparison example has three steps of dehydration step, acetone solvent removal step and glacial acet...
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