POLYFUNCTIONAL DEMULSIFIERS FOR CRUDE OILS

摘要

Polyfunctional demulsifiers for crude oils The invention relates to the use of oxyalkylated fatty amines and fatty amines of the formula (I) (I) in which A is a radical of the formula (II) - (V) (II) (III) (IV) (V) n - 2 n - 1 n - 3 n - 4 in which R is C6-C22-alkyl, x is a number from 5 to 40, y is a number from 5 to 70 and z is 0 - 70 % by weight of ethylene oxide, based on compounds of the formula (I) having x ethylene oxide units and y propylene oxide units, as demulsifiers, corrosion inhibitors and/or pour point depressants in crude oils. Radicals of the formula (I) without A are attached to the free valencies of the nitrogen atoms of the radicals of the formulae (II) to (V). The compounds of the formula (I) are prepared by reaction of amines of the formulae (II) to (V) with ethylene oxide and propylene oxide with addition of bases, such as alkali metal hydroxides.