Process for producing oligoamines or polyamines

Abstract From the Canadian patent

The preparation of alkoxylates of oligoamines or polyamines by a two-stage procedure where, in the first stage one molecule of, alkylene oxide per NH group is added onto the oligoamines or polyamines in the presence of water, alcohols or acids or a mixture thereof in the absence of a neutral or basic catalyst and, in the second stage, after removal of water and acids reaction with further alkylene oxide is carried out in the presence of a conventional neutral or basic catalyst entails, before the second stage is carried out an organic solvent or, diluent or a mixture thereof from the group of (a) alcohols and phenols and their alkoxylates (b) polyalcohols based on ethylene oxide propylene …