Crude oil demulsifiers Patent #: 4117031
ApplicationNo. 06/507122 filed on 06/23/1983
US Classes:516/168, The compound contains repeating -(OCnH2n)- (i.e., repeating unsubstituted oxyalkylene) (e.g., alkoxylated phenol-aldehyde polymer)525/504, Mixed with nitrogen-containing chemical treating agent525/523Solid polymer contains more than one 1,2-epoxy group or is derived from reactant containing at least one 1,2-epoxy group
ExaminersPrimary: Pertilla, Theodore E.
Attorney, Agent or Firm
International ClassesC08G 8/00 (20060101)
C08G 81/00 (20060101)
C08G 8/38 (20060101)
C10G 33/00 (20060101)
C10G 33/04 (20060101)
Foreign Application Priority Data1982-06-25 DE
AbstractThe new petroleum breakers are obtained by reacting, 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 presence 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 ethylenediamine, propylenediamine, polyethylenepolyamines, polypropyleneamines 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.