Patent ID: 6262226
Filing Date: 2001-07-17
Classification: B01J,C08G

Abstract:
A process for producing a condensation polymer from a polycondensation equilibrium reaction, wherein the polycondensation equilibrium reaction produces a polycondensation equilibrium reaction mixture which comprises a condensation polymer having at least one reactive chain end and at least one unwanted by-product, and wherein such by-product inhibits the completion of the polymerization reaction due to an equilibrium state, comprising:removing the unwanted by-product from the polycondensation equilibrium reaction mixture using a centrifugal force device equipped with a vacuum, wherein the centrifugal force device is rotated at a sufficient angular velocity such that the polycondensation equilibrium reaction mixture forms thin films, rapid diffusion of unwanted by-product from the polycondensation equilibrium reaction mixture to the vapor phase is achieved, and the unwanted by-product(s) is substantially removed via the vacuum, causing the further reaction of the condensation polymer chain end(s).