Patent ID: 7026363
Filing Date: 2006-04-11
Classification: B01D,C10G

Abstract:
1. A method for demulsifying an oil/water emulsion, said method comprising adding an additive to the oil/water emulsion in an amount of from 0.0001 to 5% by weight, based on an oil content of the oil/water emulsion, wherein the additive comprises an alkoxylated polyglycerol with a molecular weight of from 250 to 100,000 units which comprise 2 to 100 glycerol units whose free OH groups are alkoxylated with ethylene oxide and propylene oxide in the ratio of from 1:2 to 1:10 so that the alkoxylated polyglycerol has a degree of alkoxylation of from 1 to 100 alkylene oxide units per free OH group.