There are many methods for synthesizing stearyl acrylate, among which the more commonly used methods are esterification reaction and hydromethylamination reaction. The following takes esterification reaction as an example to introduce the synthesis steps of stearyl acrylate;
The principle of esterification reaction is to react acid and alcohol under the action of a catalyst to generate ester and water. The specific steps are as follows:
Step 1: Use stearyl alcohol and acrylic acid as raw materials, mix them and add them to the reaction kettle.
Step 2: Add acid catalyst, such as sulfuric acid or toluic acid, etc.
Step 3: Heat the reaction, usually at around 120°C for several hours. When the reaction is completed, wait for the reaction mixture to cool to room temperature.
Step 4: Wash the mixture with saturated sodium chloride solution to remove remaining catalyst and water.
Step 5: Use solvent extraction or vacuum distillation to extract the stearyl acrylate product. Finally, dry it with anhydrous sodium chloride or sodium hydroxide to obtain the pure product.
It should be noted that during the reaction process, the reaction temperature and reaction time should be controlled to ensure the efficiency of the reaction and the purity of the product. At the same time, the reaction waste liquid also needs to be disposed of to avoid environmental pollution.
