Patent ID: 8507565
Filing Date: 2013-08-13
Classification: C08G,C08L

Abstract:
1. A method for separating emulsions of oil and water, the method comprising incorporating a demulsifying-effective amount of at least one polyorganosiloxane demulsifier into an emulsion comprising an oil phase and an aqueous phase, the polyorganosiloxane demulsifier having a molecular structure comprising a polysiloxane backbone of at least two siloxane units covalently bound to (i) one or more pendant alkylene oxide groups comprising one or more alkylene oxide units independently having 1 to 6 carbon atoms, and (ii) one or more pendant groups having the formula (C r H 2r )B wherein r equals 0 to 30 and B is an aryl radical; and (iii) one or more pendant alkyl groups having at least 4 and up to 40 carbon atoms.