Formaldehyde → Phenol-Formaldehyde Aniline

Participants

Reaction Conditions

Reaction Steps

A reactor is charged with a 50:50 wt. percent mixture of phenol and aniline at 50° C and 15 psig nitrogen. The reactor is heated to 90° C. Formaldehyde is fed into the reactor in an amount of about 10 wt. percent of the phenolaldehyde mixture, while the reactor temperature is maintained at 90° C. After the formaldehyde has been fed into the reactor, the pressure is reduced to zero psig and the mixture is heated to 180° C and held at that temperature for 1 hour, during which time a distillate of water of condensation is removed. The mixture is then maintained at 180° C and 15 mm Hg for 6 hours, during which time a distillate of unreacted phenol and aniline is removed. The yield of PFAR product in the reactor is about 52 wt % of the initial reaction mixture.

Provenance & Evidence