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    • 9. 发明申请
    • PROCESS FOR PURIFYING ALKYLATED PHENOLS
    • 纯化烷基酚的方法
    • WO2004026801A1
    • 2004-04-01
    • PCT/CH2003/000632
    • 2003-09-18
    • SULZER CHEMTECH AGNIKZAD, AliFAESSLER, PeterKUSZLIK, Andrzej Kornel
    • NIKZAD, AliFAESSLER, PeterKUSZLIK, Andrzej Kornel
    • C07C37/70
    • C07C37/84C07C37/685C07C39/06
    • In a process for purifying a reaction mixture containing, in addition to a desired alkylphenol compound from the group of 2-(tert-butyl)phenol, 3-(tert-butyl)phenol, 4-(tert-butyl)phenol, 2,4-di(tert-butyl)phenol, 2,6-di(tert-butyl)phenol, 3,5-di(tert-butyl)phenol or 2,4,6-tri(tert-butyl)phenol, at least one further alkylphenol compound from the same or another group of alkylphenols, the desired compound is first separated as a distillate fraction from a less volatile mixture or residue. The distillate fraction is then subjected to a crystallization, preferably a fractional layer crystallization, in which the distillate fraction is cooled and the desired alkylphenol compound is crystallized out. The undesired compounds are enriched in the mother liquor in this process and can be separated off. High-purity alkylphenol compounds having a low colour index can be obtained by this purification process on a large industrial scale.
    • 在纯化含有2-(叔丁基)苯酚的所需烷基酚化合物的3-(叔丁基)苯酚,4-(叔丁基)苯酚,2, 苯酚,2,6-二(叔丁基)苯酚,3,5-二(叔丁基)苯酚或2,4,6-三(叔丁基)苯酚,至少 从相同或另一组烷基酚中再加入另外一种烷基酚化合物,首先从较不易挥发的混合物或残余物中分离所需化合物作为馏出物馏分。 然后将馏出物馏分进行结晶,优选分级层析结晶,其中将馏出物馏分冷却并将所需的烷基酚化合物结晶出来。 在该方法中,不需要的化合物富集在母液中,可以分离出来。 可以通过大规模工业化的纯化方法获得具有低颜色指数的高纯度烷基酚化合物。