Process for producing overbased alkaline earth hydrocarbyl sulfo

Details Process for producing overbased alkaline earth hydrocarbyl sulfo Process for producing overbased alkaline earth hydrocarbyl sulfo

1979-10-02

1980-09-30

Siegel, Alan

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260505P, 260504A, C07C14324, C07C13900

Patent

active

042255090

ABSTRACT:
Overbased alkaline earth metal hydrocarbyl sulfonates are made by injecting carbon dioxide into a mixture of hydrocarbon sulfonic acid, alkaline earth metal base and lower alkanol. Solids are removed using a centrifuge or filter forming a cake of such solids and hydrocarbyl sulfonic acid values. The cake is mixed with an aqueous acid which forms a water-soluble alkaline earth metal salt. The resulting organic phase is separated and hydrocarbyl sulfonic acid is recovered from it.

REFERENCES:
patent: 2861951 (1958-11-01), Carlyle
patent: 2865957 (1958-12-01), Logan
patent: 3027325 (1962-03-01), McMillen
patent: 3057896 (1962-10-01), Schlicht
patent: 3312618 (1967-04-01), LeSuer
patent: 3488284 (1970-01-01), LeSuer
patent: 3609076 (1971-09-01), Blaha

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