Preparation method for bisphenol E

A preparation method for bisphenol E is disclosed and belongs to the field of preparation methods for bisphenol compounds. The technical problems that a conventional bisphenol E preparation method is complex in operation, toxicity is high and the finished-product purity is low are solved. The method comprises step 1, precipitating a crystal; step 2, washing and drying, so as to obtain a crude product; and step 3, performing rectification. By employing the method, the usage amount of phenol is reduced, reaction time is shortened, the product ratio in the crude product is improved, and the final product bisphenol E purity is 99.9%. In the method, petroleum ether is employed for replacing cyclohexane, thus the cost is reduced, and petroleum ether and ethyl acetate are employed for replacing toluene as a refined solvent, and thus the toxicity is reduced.