PROCESS FOR THE PREPARATION OF PARA-PHENYLENE DIAMINE

摘要

The method manufactures the p-phenylene diamine from a waste product of polyethylenetere phtalate by using secondary alcohol as catalyst. The manufacturing method comprises: A) turning into slurry form in a secondary alcohol at 100-250 deg.C; and B) synthesizing the compound of fomula of (II) from a fomula (I) in a base like fomula (II); C) manufacturing p-phenylene diamine by heating the resultant compound fomula (III) in a solvent.