Process for the separation and recovery of naphthalene-sulfonic

Details Process for the separation and recovery of naphthalene-sulfonic Process for the separation and recovery of naphthalene-sulfonic

1990-05-24

1991-07-02

Siegel, Alan

Organic compounds -- part of the class 532-570 series

Organic compounds

Sulfonic acids or salts thereof

562124, C07C14324

Patent

active

050287362

ABSTRACT:
The invention relates to a process for the separation and recovery of naphthalenesulfonic acids from aqueous solutions. In this, the naphthalenesulfonic acids are adsorbed on basic ion exchangers and subsequently desorbed again, preferably with the aid of an alkaline liquor, from which the alkali metal sulfonates are then precipitated by cooling.

REFERENCES:
Gillette, Chem. Abst., vol. 70 (1969), 33968v.
Bear, Chem. Abst., vol. 102 (1985), 39213w.
Rohm & Haas Company, Amberlite IRA-402 Tech Notes (1961).

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