ALKOXYLATED POLYGLYCEROLS AND THEIR USE AS DEMULSIFIERS

摘要

The invention relates to the use of alkoxylated polyglycerols as demulsifiers. The invention is characterized by the use of alkoxylated polyglycerols having a molecular weight of 250 to 100000 moieties which comprise 2 to 100 glycerol moieties whose free OH groups are alkoxylated with C2-C4 alkylene oxide groups or a mixture of such alkylene oxide groups so that the alkoxylated polyglycerol has an alkoxylation degree of 1 to 100 alkylene oxide moieties per free OH group. The inventive polyglycerols are used as demulsifiers for oil/water emulsions in an amount of from 0.0001 to 5 % by weight, based on the oil content of the emulsion to be demulsified.