Preparation method of bisphenol A polyoxyethylene ether

The invention discloses a preparation method of bisphenol A polyoxyethylene ether. The method comprises the following steps: in the presence of a bisphenol A alkaline earth metal catalyst, carrying out a melting reaction on bisphenol A and ethylene oxide to prepare bisphenol A polyoxyethylene ether; the preparation method of the bisphenol A type alkaline earth metal catalyst comprises the following steps: dissolving bisphenol A in a solvent, adding acetic anhydride, heating to 75-85 DEG C, stirring for 15-35 minutes, adding calcium hydroxide, heating to 80-100 DEG C, and stirring for 1-1.5 hours; then, concentrated sulfuric acid is continuously added, dropwise adding is completed within 10-15 min, and a reaction is conducted for 1-2 h at the temperature of 85-95 DEG C; and removing water and the solvent from the product in vacuum to obtain the bisphenol A alkaline earth metal catalyst. 本发明公开了一种双酚A聚氧乙烯醚的制备方法。所述方法包括以下步骤：在双酚A型碱土金属催化剂的存在下，使双酚A和环氧乙烷熔融反应，制备双酚A聚氧乙烯醚；所述双酚A型碱土金属催化剂的制备方法如下：将双酚A溶于溶剂后加入醋酸酐，升温至75-85℃搅拌15-