Patent ID: 7067610
Filing Date: 2006-06-27
Classification: C08G

Abstract:
1. An integrated method for producing aromatic polycarbonate, comprising: (1) making a liquid mixture of acetone and diphenylcarbonate; (2) transporting the liquid mixture to a polycarbonate production plant; (3) separating the diphenylcarbonate from the acetone in the liquid mixture in the polycarbonate production plant, producing separated diphenylcarbonate and separated acetone; (4) reacting separated diphenylcarbonate with bisphenolacetone to produce polycarbonate, thereby producing liberated phenol; (5) reacting the liberated phenol with separated acetone to produce bisphenolacetone; (6) using bisphenolacetone of step (5) in the reaction of step (4).