申请人:Belfadhel Hatem Abdallah
公开号:US20100010273A1
公开(公告)日:2010-01-14
A process for preparing 2,2-bis(4-hydroxyphenyl)propane (p,p-bisphenol-A) from 2,4,4-trimethyl-2-(4-hydroxyphenyl)chroman (chroman 1.5) is disclosed. Phenol and chroman 1.5 are contacted over an acidic ion exchange resin at a given temperature for a given period of time. The process results in improved quality of p,p-bisphenol-A, better performance of catalyst, improved raw material usage, and reduced waste.
本发明公开了一种从2,4,4-三甲基-2-(4-羟基苯基)色基环烷(色基环烷1.5)制备2,2-双(4-羟基苯基)丙烷(p,p-双酚A)的方法。在一定温度下,将苯酚和色基环烷1.5与酸性离子交换树脂接触一定时间。该方法可以提高p,p-双酚A的质量,改善催化剂的性能,改善原材料的使用和减少废弃物。