By improving alkylation conditions, a satisfactory result has been achieved, that is, selectivity of PTOP is above 89% when conversion rate of DIB is 99% with the ion exchange resin catalysts made in our own country.

• 通过优化工艺条件，利用国产阳离子交换树脂C102－2/9826，在苯酚（PhOH）与DIB摩尔比为3：1，催化剂加入量0.；42%25（重量比），反应温度80℃条件下，接触2小时DIB转化率达到98