反应详情

Into the reactor described in Example 1 hereinbefore there are charged 58.5 g (0.25 g-mol) of 2,6-ditert.butyl4-ethylphenol, 1 g of a concentrated sulfuric acid and 19 g (0.25 g-mol) of methylal are added into the reactor at the temperature of 130° C. over 30 minutes. The reaction mass is treated and 26.2 g of 2,2'-methylene-bis-(4-ethyl-6-tert.butylphenol) are thus obtained which corresponds to 98.9% of the theoretical yield calculated for the reacted 2,6-ditert.butyl-4-ethylphenol (conversion of the latter is 57.5).

1. additionare added into the reactor at the temperature of 130° C. over 30 minutes
2. additionThe reaction mass is treated