Demulsifiers for separating oil and water mixtures

摘要

A method for preventing or breaking oil and water mixtures comprising adding thereto a branched reaction product of;A) at least one linking compound of formula I; $PTEXTPDATR/PDATHILSPPDAT1/PDAT/SP/HILPDAT(X)/PDATHILSBPDAT3/PDAT/SB/HILPDAT\ \ (I)\; /PDAT/PTEXT$ ;wherein each X group is a halogen atom or one X group is a halogen atom and two X groups with two adjacent carbon atoms in the R¹ group and an oxygen atom from an epoxy group, and R¹ is an alkanetriyl group containing from 3 to 10 carbon atoms;;B) at least one compound of formula II and/or formula III; $PTEXTPDATR/PDATHILSPPDAT2/PDAT/SP/HILPDAT(OA)/PDATHILSBPDATn/PDAT/SB/HILPDATOH\ \ (II)\; /PDAT/PTEXT$ ;wherein R² is an aliphatic group containing from 3 to 36 carbon atoms, n is a number of from 0 to 200, and each OA group is independently an ethyleneoxy, 1,2-propyleneoxy, or 1,2-butyleneoxy group.; $PTEXTPDATR/PDATHILSPPDAT2/PDAT/SP/HILPDAT(OA)/PDATHILSBPDATn/PDAT/SB/HILPDATNH/PDATHILSBPDAT2/PDAT/SB/HILPDAT\ \ (III)\; /PDAT/PTEXT$ ;wherein R², OA, and n have the meanings given above for formula II; and, optionally, one or more of the following components;;C) a polyol containing at least 2 hydroxyl groups, one or more of which can be optionally alkoxylated; and;D) a polyamine containing at least two amine groups, e.g. 2, 3, 4, 5 or 6 amine groups or more, and which can optionally contain alkyleneoxy groups.