Method for producing neutral sugar surfactant granulates

摘要

A process for making neutral sugar surfactant granules involving: (a) providing a water-containing alkaline sugar surfactant selected from the group consisting of an alkyl oligoglycoside, an alkenyl oligoglycoside, a fatty acid-N-alkyl polyhydroxyalkylamide, and mixtures thereof; (b) providing a thin-layer evaporator or dryer having rotating internals; (c) neutralizing the water-containing alkaline sugar surfactant to a pH of from 6.8 to 7.5 to form a neutralized water-containing sugar surfactant; (d) introducing the neutralized water-containing alkaline sugar surfactant into the thin-layer evaporator or dryer; and (e) drying the water-containing alkaline sugar surfactant in the thin-layer evaporator or dryer until it has a residual water content below 2% by weight.