abstract |
A process for producing a thio- bis-phenol comprises reacting the corresponding phenol with sulphur dichloride in a solvent medium in the presence of a carboxamide. The carboxamide acts as a catalyst and is, for example, an N,N- dialkylcarboxamide having the formula: <IMAGE> where R1, R2 and R3 are various substituents, or R1 may be hydrogen. |