Patent ID: 7723465
Filing Date: 2010-05-25
Classification: C08G

Abstract:
1. A process for continuously preparing a polyether alcohol, the process comprising adding an alkylene oxide onto an H-functional starter substance in the presence of a double metal cyanide catalyst in a continuous reactor to form a product, transferring an output comprising the product from the continuous reactor to a second reactor, and reacting the product in the second reactor to form the polyether alcohol; wherein the second reactor is divided by sealed plates into mutually separate sections, known as compartments, wherein each individual compartment of the second reactor is directly adjacent to at least one other compartment, wherein, each compartment is individually connected to its adjacent compartment(s) by an external pipe, wherein the output of the continuous reactor passes through the compartments of the second reactor in succession via transfer through the external pipe(s), thereby resulting in formation of the polyether alcohol, and wherein the second reactor does not comprise moving parts.