Extreme purification of sulfonic-type acids for processing to hi

Details Extreme purification of sulfonic-type acids for processing to hi Extreme purification of sulfonic-type acids for processing to hi

1977-01-17

1982-03-23

Siegel, Alan

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260505P, 26004S, C07B 1300, C07C14324

Patent

active

043212140

ABSTRACT:
A purification process of crude oil soluble hydrocarbon sulfonic acid mixtures which comprises washing the crude oil soluble hydrocarbon sulfonic acid with water, contacting the washed, partially pure oil soluble hydrocarbon sulfonic acid with an excess of calcium carbonate to neutralize entrained sulfuric acid and adsorb impurities, removing the resulting calcium sulfate along with the remaining calcium carbonate, and recovering the pure sulfonic acid. Sulfonic acid produced in this manner is substantially free of impurities. The sulfonic acid is ideal for overbasing to high Total Base Number (TBN) sulfonate.

REFERENCES:
patent: 3007868 (1961-11-01), Eck
patent: 3050464 (1962-08-01), Brown
patent: 3496224 (1970-02-01), Ayers
patent: 3720707 (1973-03-01), Vanderlinden
patent: 3798261 (1974-03-01), Kemp

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