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专利名称：PROCESS FOR THE PREPARATION OF
BISPHENOLS
发明人：MARLIN E. WALTERS,W. FRANK
RICHEY,EMMETT L. TASSET
申请号：AU6999491申请日：19910125公开号：AU6999491A公开日：19910801
摘要：Triaromatic bisphenols are prepared by reacting a phenolic compound with atleast one halo-compound selected from aromatic compounds having an ( alpha , alpha -dihalo)alkyl or ( alpha -halo)alk-1-enyl substituent with at least one beta -hydrogen atomin said alkyl or alkenyl moiety, a trihalomethyl substituent or a dihalocyanomethylsubstituent. Preferably, said halo-compound is 1,1-dichloroethylbenzene, 1-chlorostyrene, or mixtures thereof. The reaction may be conducted in the presence orabsence of a solvent; an excess of the phenolic compound can serve as the solvent. Theproduct is conveniently recovered by removing the by-product HCl, excess phenoliccompound, excess solvent and cooling. Yields of greater than 90 percent of theoreticaland a large proportion of para isomer can be obtained. Tris-(1,1,1-(4-hydroxyaromatic)toluenes are believed to be novel compounds.
申请人：THE DOW CHEMICAL COMPANY
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