Abstract:

A method for the prepn. of transparent emulsions for cosmetic applications consists of adding water and a blend of 2 emulsifiers (sorbitan fatty acid esters and their ethoxylated derivs.) to iso-Pr myristate (I) [110-27-0] followed by homogenization. The use of excessive emulsifiers decreased the emulsion stability. The best emulsion stability was obtained with 7, 9, 10, and 15% (by wt.) of emulsifier blend for 20, 30, 40 and 50% I. An ideal compn. contained 20% I and 5% emulsifier. Emulsions prepd. with water, in the absence of polyols, were stable even after 12 mo storage. The stability of the sorbitol [50-70-4] emulsion was improved by adding anionic emulsifiers such as triethanolamine oleate [2717-15-9] to the nonionic blend. Thus, combinations of triethanolamine oleate and sorbitan esters and ethoxylated sorbitan esters improved the emulsion stability. [on SciFinder(R)]