Sulfonation of neutral oil-benzene alkylate blend
Abstract
Abstract A BLEND OF PETROLEUM LUBRICATING OIL OF 400-600 MOLECULAR WEIGHT AND LINEAR ALKYL BENZENE OF ABOUT 25-35 CARBON ATOMS IS SULFONATED WITH OLEUM. THE REACTION MIXTURE IS IMMEDIATELY DILUTED WITH ABOUT TWO VOLUMES OF NONAROMATIC NAPHTHA WITHOUT HYDROLYZING THE SLUDGE WHICH IS SEPARATED AND DISCARDED. THE NAPHTHA SOLUTION IS EXTRACTED WITH 8-15% BY VOLUME OF WATER, THEN NEUTRALIZED WITH 50 TO 100% EXCESS FINE HYDRATED LIME AND FILTERED. CALCIUM SULFATE IS ADSORBED IN THE EXCESS LIME. NAPHTHA IS RECOVERED BY DISTILLATION. THE RESIDUE OIL-SULFONATE SOLUTION CONTAINING ABOUT 40% SULFONATE, IS A CLEAR, BRIGHT OIL SOLUBLE SULFONATE SUBSTANTIALLY FREE OF SULFATES AND CHLORIDES. IT IS USEFUL AS A DETERGENT ADDITIVE IN MOTOR OILS AND ANTI-RUST COMPOUNDS.
Inventors
- 👤 Lemuel S Benbury
- 👤 Ulric B Bray
Bibliographic Details
Claims Analysis
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