Oil soluble alkoxylated surfactants from lignin

Details Oil soluble alkoxylated surfactants from lignin Oil soluble alkoxylated surfactants from lignin

C - Chemistry, Metallurgy

07

C

C07C 305/18 (2006.01) C07C 309/24 (2006.01) C09K 8/584 (2006.01) E21B 43/22 (2006.01)

Patent

CA 2092169

OIL SOLUBLE ALKOXYLATED SURFACTANTS FROM LIGNIN (D#78,936-F) ABSTRACT OF THE INVENTION A method of producing oil soluble surfactants from lignin is disclosed, along with a method for recovering oil from underground formations by means of a surfactant flooding system containing these lignin surfactants. Lignin is reduced in the presence of a carbon monoxide or hydrogen reducing agent at high temperature and pressure, alkoxylated with an .alpha.-olefin epoxide and then changed into oil soluble lignin surfactants by a reaction selected from the group consisting of sulfonation, sulfation and alkoxysfulation.

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