活性粘土催化合成二氨基二苯甲烷及三苯甲烷类化合物

Synthesis of diaminodiphenyl methane and diaminotriphenyl methane catalyzed by active clays

采用活性粘土代替传统的无机强酸作催化剂，苯胺和Ｎ，Ｎ＇－二甲基苯胺分别与甲醛和苯甲醛缩合得到对应氨基苯甲烷产物。结果表明，活性粘土的催化效果好，而且简化了合成工艺，生产过程也无腐蚀。

The condensation products of aniline, N,N'-dimethylaniline with formaldehyde, benzaldehyde have been respectively prepared with active clays as catalysts instead of inorganic acids. The results show that the catalystic effect is better and the prepared procedure is simpler than the tradition one. It is non-corrosive in industrial production.