Abstract
The effects of the ethylene oxide polymers of ursolic acid, some of its derivatives, and cholic acid on surface and interfacial tensions and on the formation of oil-in-water emulsions and transparent emulsions are described. In addition, the cotton tape modification of the Draves test was employed for evaluation of these compounds as wetting agents. The propylene oxide polymers of these same initiators were found to be incapable of aiding in the formation of water-in-oil or oil-in-water emulsions. These polymers were evaluated by preparing a series of water-in-oil ointments and by noting their effects on interfacial tension.
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