Pre-formed emulsifying systems

摘要

The present invention relates to the use of N-acylate derivatives of glutamic or aspartic acid respectively of general formula (I) or (II): <CHEM> in which R is linear or branched, saturated or unsaturated C3-C22 acyl, or of a salt thereof as the primary emulsifiers in the formulation of a pre-formed emulsifying system for oil-in-water emulsions. The said pre-formed emulsifying system further includes a secondary emulsifier comprising at least one long chain C6-C30 linear or branched, saturated or unsaturated alcohol having one or more hydroxylic functions optionally ethoxylated and/or propoxylated.