Patent ID: 6716358
Filing Date: 2004-04-06
Classification: C10G,Y10T

Abstract:
A method for determining a strength of an interfacial film present at an oil-water interface of a water-in-oil emulsion comprising;(a) sonicating a series of at least three samples of said water-in-oil emulsion wherein each of said samples is sonicated at an energy of at least about 25 watt/cm2 higher than the preceeding sample; (b) separating each of said sonicated water-in-oil emulsion samples into a water phase and an oil phase; (c) determining the weight of water separated for each of said samples in said series of samples; (d) calculating a weight percent of water separated for each of said samples in said series of samples said weight percent is the percent demulsification; (e) identifying a sample exhibiting maximum percent demulsification from said series of samples and the energy of sonication corresponding to the said sample exhibiting maximum percent demulsification is the strength of the interfacial film of the emulsion.