Bisphenol A polyether polyol and preparation method thereof

The invention discloses bisphenol A polyether polyol. The bisphenol A polyether polyol comprises bisphenol A, a catalyst and alkylene oxide; and the catalyst is organic alkoxy alkaline earth metal. The invention also discloses a preparation method of the polyether polyol. The raw material adopts the organic alkoxy alkaline earth metal as the catalyst, is a mild catalyst, does not need a long-time initiation stage, has high catalytic activity and high selectivity, and is beneficial to preparation of products with low peroxide value and high conversion rate. The number-average molecular weight of the bisphenol A polyether polyol obtained by the preferable method is the molecular weight applicable to the polyether polyol for a UV monomer; and the peroxide value and color are low, byproducts are few, the product stability is good, use of downstream customers is facilitated, and subsequent utilization of the product is facilitated. 本发明公开了一种双酚A聚醚多元醇，其原料为双酚A、催化剂和环氧烷烃；所述催化剂为有机烷氧基碱土金属。本发明还公开了这种聚醚多元醇的制备方法。其原料采用有机烷氧基碱土金