Formulating stable emulsion hinders interaction through the water-oil

摘要

A stable emulsion of oil in water comprising: a) a discrete oil phase comprising active ingredients oily soluble active ingredients in oil, oil adjuvant or oil solvent, which can react or interact with ingredients in the continuous aqueous phase to cause instability physical, selected from the group consisting of 5 Ostwald ripening, crystallization, sedimentation and creaming; b) a continuous aqueous phase comprising water and soluble ingredients in water or dispersible in water; c) a first polymeric surfactant comprising an ABA block copolymer having a hydrophilic portion of poly (ethylene oxide) (PEG) and a hydrophobic portion of 12-hydroxystearic acid in an amount of 1 g / 200 g / l and a second polymeric surfactant comprising a polyalkylene glycol ether in an amount of 1 g / 200 g / l; d) optionally, other inert formulation ingredients.