4，4＇－异丙撑基双苯胺合成方法的评估

Evaluate on Synthetic Method of 4, 4'-Isopropylidene-dianiline

本文对４，４＇－异丙撑基双苯胺的四种主要合成方法进行了详细地陈述与比较，这些合成方法都有各自的特点，并且都具备工业化的可能性。

Four main synthetic methods of 4, 4'-Isopropylidene-dianiline were discussed and compared. These synthetic methods have different features, possibilities of manufacture in industry also discussed.