Patent ID: 6184399
Filing Date: 2001-02-06
Classification: C07C

Abstract:
A process for preparing a fatty acyl isethionate salt of the formula R.sup.1 C(O)OR.sup.2 SO.sub.3 M which comprises reacting a reaction mixture comprising at least one fatty acid of the formula R.sup.1 C(O)OH with at least one hydroxyalkanesulfonic acid salt of the formula HOR.sup.2 SO.sub.3 M in the presence of a catalyst, and distilling off water, wherein R.sup.1 is a linear or branched, saturated or unsaturated hydrocarbon having 5 to 31 carbon atoms, R.sup.2 is a linear, saturated or unsaturated hydrocarbon having 2 to 4 carbon atoms, and M is lithium, sodium, potassium, or ammonium, wherein a foam control agent comprising a silicone oil is added to the reaction mixture.