Petroleum emulsion-breakers containing nitrogen, and their use

Details Petroleum emulsion-breakers containing nitrogen, and their use Petroleum emulsion-breakers containing nitrogen, and their use

B - Operations, Transporting

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134/56

B01D 17/05 (2006.01) C08G 8/38 (2006.01) C08G 81/00 (2006.01) C10G 33/04 (2006.01)

Patent

CA 1197161

-1- Abstract of the disclosure: The new petroleum breakers are obtained by react- ing, at 90 to 160°C and at a pH value of 6 to 9, a) an addition product which has been obtained by reacting phenol with formaldehyde or acetaldehyde in a molar ratio of 1 : 1 to 3 at a temperature of 50 to 80°C, in the pre- sence of an alkaline catalyst, with b) a block polymer which contains nitrogen and which has been obtained by an addition reaction in which 10 to 80 moles of ethylene oxide and propylene oxide are added on, as a statistical average per nitrogen atom, the molar ratio of ethylene oxide to propylene oxide being 1 : 0.5 to 14, to ethylene- diamine, propylenediamine, polyethylenepolyamines, poly- propyleneamines or mixtures thereof, the ratio being 1 to 20 moles of a) to 1 mole of b). They are distinguished by a high degree of effectiveness when used for separating petroleum emulsions. Products which in some cases have an even greater effect are obtained if the reaction product of a) and b) is propoxylated.

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