Surfactants from lignin

Chemistry: natural resins or derivatives; peptides or proteins; – Lignins or derivatives – Hydrogenation of a lignin or lignin containing substance – or...

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260505R, 260512R, 530502, 568608, 568790, 558 33, C08H 502, C07C 43115

Patent

active

047390409

ABSTRACT:
A method of producing surfactants from lignin is disclosed by reducing lignin in the presence of a carbon monoxide or hydrogen reducing agent at high temperature and pressure to produce low molecular weight lignin phenols and subjecting the lignin phenols to one or a combination of several reactions such as alkoxylation, alkylation, sulfonation, sulfation, alkoxysulfation, and sulfomethylation. The lignin surfactants so produced can be employed in a surfactant system to recover oil from underground formations.

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patent: 3223698 (1965-12-01), Oshima et al.
patent: 3253044 (1966-05-01), Goheen
patent: 3865803 (1975-02-01), Falkehag
patent: 4420644 (1983-12-01), Huibers et al.
patent: 4647704 (1987-03-01), Engel et al.

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