| 摘要 |
<p>STABLE EMULSIONS OF p-HYDROXYBENZOIC ACID ESTERS AND METHOD OF PREPARATION A heat and freeze-thaw stable, oil-in-water emulsion is comprised of from approximately 10% to 60% by weight of a eutectic oil containing a mixture of three or more lower alkyl esters of p-hydroxybenzoic acid, from approximately 1.5% to 5.0% by weight of an emulsifying agent which may be gelatin, casein, collagen, glyceryl oleate, the ammonium or sodium salt of sulfated nonylphenoxypoly(ethyleneoxy) ethanol or mixtures thereof, from approximately 3% to 10% by weight of sorbitol and the balance water. The method of preparing such emulsions is also disclosed.</p> |
