Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1984-12-28
1986-04-01
Siegel, Alan
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
260504R, 260513R, 260513T, C07B 1300
Patent
active
045796904
ABSTRACT:
An improved process for the solvent extraction of free oil from C.sub.8 to C.sub.24 olefin sulfonation products, which comprises steps for contacting an olefin sulfonation product containing free oil with an alkane-based extraction solvent and phase separating the resulting mixture into an extract phase enriched in free oil and a raffinate phase enriched in sulfonated matter. The invention is particularly directed to the use in such a process of an extraction solvent which comprises one or more C.sub.4 to C.sub.9 alkanes and between about 5 and 35 percent by weight of dimethyl ketone. Deoiled sulfonation products are known for utility as components of detergent formulations for industrial, household and personal care uses.
REFERENCES:
patent: 2781315 (1957-02-01), Bray
patent: 3888917 (1975-06-01), Fendress et al.
patent: 4321216 (1982-03-01), Delgado
Shell Oil Company
Siegel Alan
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