申请人:HOECHST CELANESE CORPORATION
公开号:EP0441648A1
公开(公告)日:1991-08-14
A process for the purification of 1,1,1-tris(4'-hydroxyphenyi)ethane by washing a crude admixture containing both it and impurities with a saturated solution of 1,1,1-tris(4'-hydroxyphenyl)ethane in water and methanol ; and isolating the washed crude admixture from the effluent and dissolving the washed crude admixture in methanol, and adding water and sodium borohydride to the dissolved, washed crude admixture to form a precipitate of 1,1,1-tris(4'-hydroxyphenyl)ethane, and filtering the precipitate to form a resultant purified 1,1,1-tris(4'-hydroxyphenyl)ethane and a filtrate. Another embodiment of the invention provides iteratively repeating the process by washing an additional crude admixture batch with the filtrate from a prior purification.
一种提纯 1,1,1-三(4'-羟基苯基)乙烷的工艺,其方法是用 1,1,1-三(4'-羟基苯基)乙烷在水和甲醇中的饱和溶液洗涤含有 1,1,1-三(4'-羟基苯基)乙烷和杂质的粗混合物;将洗涤后的粗混合物从流出物中分离出来,并将洗涤后的粗混合物溶解在甲醇中,将水和硼氢化钠加入到溶解的、洗涤后的粗混合物中,形成 1,1,1-三(4'-羟基苯基)乙烷的沉淀,并过滤沉淀,形成纯化的 1,1,1-三(4'-羟基苯基)乙烷和滤液。本发明的另一个实施方案提供了迭代重复该过程的方法,即用前一次纯化的滤液洗涤另一批粗混合物。