Patent ID: 9120731
Filing Date: 2015-09-01
Classification: C07C,C08G

Abstract:
1. A process for preparing polyether alcohols, the process comprising: reacting a) one or more alkylene oxides and optionally carbon dioxide, and b) one or more H-functional starter substances, in the presence of a catalyst, to form a liquid reaction mixture in a reaction unit, wherein: the reaction unit has internals which form a multiplicity of microstructured flow channels, which effect multiple splitting of the liquid reaction mixture into component flow pathways and renewed recombining thereof in altered arrangement, the multiple splitting and renewed recombining are repeated 10 to 10,000 times, and the microstructured flow channels having a characteristic dimension, defined as the greatest possible distance of any particle in the liquid reaction mixture to the flow channel wall closest to the particle, in a range of from 20 to 10,000 μm, so that a flow profile of the liquid reaction mixture through the microstructured flow channels is approximate to an ideal plug flow and away from a parabolic flow profile.