Bisphenol A → Carbonic acid;4-[2-(4-hydroxyphenyl)propan-2-yl]phenol

Participants

Reaction Conditions

Reaction Steps

0.15 mol bisphenol A, 0.16 mol diphenyl carbonate 2×10-6 mol tetrabutyl ammonium bis-4-nitrophenolate, 3×10-3 mol phenyl benzoate were placed in a reactor which was blanketted with nitrogen. Temperature was raised from ambient to 150° C. during one hour while the reactor contents were maintained at atmospheric pressure. Then changing the temperature to 240° C. and pressure to 90 mm Hg in 11/2 hours, phenol removed from the reactor was nearly 75%. On subsequent increase in temperature to 260° C. and decrease in pressure to 20 mm Hg, phenol collected in 2 hours was 99%. In the end the reaction mixture was heated to 280° C. at 1 mm Hg for 1 hour. The colorfree polymer, bisphenol A polycarbonate in 99% yield obtained had a relative viscosity 1.24.

Provenance & Evidence