Process for the production of aromatic sulfonates

Details Process for the production of aromatic sulfonates Process for the production of aromatic sulfonates

1973-05-08

1976-05-18

Thomas, Jr., James O.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260505C, C07C14324

Patent

active

039578593

ABSTRACT:
Aromatic sulfonates having, respectively, preferential oil-, and water- and alcohol-solubility are prepared by reacting aromatic compounds and sulfuric acid in a medium capable of liquid-liquid extraction with water; the product stream is then subjected to countercurrent extraction against water in a first multi-stage column; the water stream is next subjected to countercurrent extraction against a water-immiscible higher alcohol in a second multi-stage column; and the sulfonate having preferential water- and alcohol-solubility, which has transferred from the product stream, to the water stream, and finally to the higher alcohol, is recovered from the latter as the free acid or as a salt thereof. The process is especially adapted to the production of dinonylnaphthalene disulfonic acid.

REFERENCES:
patent: 2764548 (1956-09-01), King et al.
patent: 2802866 (1957-08-01), Salzmann et al.
patent: 2843626 (1958-07-01), Gebelein et al.
patent: 2844624 (1958-07-01), Bloch
patent: 3075005 (1963-01-01), Garden et al.

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