Abstract:
For carrying out phase boundary surface reactions of components, e.g., production of polycarbonates from phosgene, Bisphenol A, sodium hydroxide and water a reaction tube is used, which comprises a series of residence time sections of relatively large internal tube diameter and alternately positions with respect to mixing sections of smaller internal tube diameter, the mixing sections providing Reynolds numbers greater than 2,000 for the reactants.
Abstract:
Polymer solutions are purified with a detergent solution in pulsating columns with perforated bases, in which a proportion by volume of the polymer solution to the detergent solution of