PROCESS FOR THE CONTINUOUS PRODUCTION OF POLYETHER POLYOLS

摘要

This invention relates to a process for the continuous production of polyether polyols, polyether polyols produced by the inventive continuous process and their use in polyurethane applications.

主权项

1. A process for continuous production of polyether alcohols, the process comprising:
(a) continuously adding at least one aromatic amine (AA) at one dosing point D1 to an arrangement R1 comprising at least one plug-flow reactor (PFR) and/or a cascade of at least two continuously stirred tank reactors (CSTRs), and reacting with at least one alkylene oxide 1 (AO1) which is continuously dosed into the arrangement R1 at one or more dosing points D2 to generate an intermediate (I); and subsequently (b) continuously transferring the intermediate (I) into another arrangement R2 comprising at least one further reactor, and reacting with at least one alkylene oxide 2 (AO2) in the presence of at least one amine compound (AC), wherein at least one of the at least one amine compounds AC is selected from the group consisting of imidazoles.