A new sulfone bridge syntan, named TS20 was prepared.The influences of the production rate of dihydroxyl diphenyl sulfone(DDS) and its re sulphonating on resultant product were particularly discussed.

• 研究了新型砜桥型合成鞣剂TS20的研制方法,特别考察了双砜S产率及二次磺化对产品性能的影响。