Patent ID: 6365778
Filing Date: 2002-04-02
Classification: C07C

Abstract:
A process for the preparation of N-alkylpolyhydroxyalkylamines from monoalkylamine and reducing sugar, in which separate solutions of the alkylamine and the reducing sugar are first mixed together in solution, the solution obtained is hydrogenated with hydrogen in the presence of a hydrogenation catalyst and the N-alkylpolyhydroxyalkylamine formed is obtained by removal of the hydrogenation catalyst, which comprises mixing together by injecting the monoalkylamine and the reducing sugar, in each case in the form of an aqueous, alcoholic or aqueous/alcoholic solution, simultaneously into a mixing unit and keeping the solution in the mixing unit under turbulence at a temperature of 25 to 60Â° C. and a pressure of 50 to 90 bar for 6 seconds to less than 5 minutes; and immediately hydrogenating the solution in a hydrogenation reactor to produce a hydrogenated solution comprising N-alkylpolyhydroxyalkylamines.