Biologisch abbaubare Esterquats als Flotationshilfsmittel

摘要

The invention concerns the use of so-called quaternary esters as an aid for flotation of non-sulfidic minerals. It was discovered that the products of quaternary esterification of mono, di or trialkanolamine containing aliphatic carboxylic acids present good collector properties on the one hand, especially for the flotation of silicates, and on the other hand an exceptional biodegradability under both aerobic as well as anaerobic conditions.