Process for the extractive removal of phospho- and sulfobetaines

Details Process for the extractive removal of phospho- and sulfobetaines Process for the extractive removal of phospho- and sulfobetaines

1992-01-10

1994-07-05

Dees, Jose G.

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

Organic compounds

Phosphorus acids or salts thereof

562 12, 562 14, 562 43, 562101, 562102, 562104, 423387, 4233212, 210660, C07C 6100, B01D 3500

Patent

active

053269063

ABSTRACT:
The ampholytes are extracted from the reaction solution with a liquid cation exchanger which is immiscible with the acidic aqueous reaction solution, where the cation exchanger is dissolved in at least one organic solvent which is immiscible with water and forms an organic phase with the organic solvent. Subsequently the organic phase which is loaded with the ampholyte is separated from the reaction solution, and then the ampholytes are back-extracted from the organic phase with aqueous solvents. The product losses in the process are low, and the residual salt content is very low.

REFERENCES:
patent: 3318867 (1967-05-01), Heinz
patent: 4166942 (1979-09-01), Tunick et al.
patent: 4877885 (1989-10-01), Ballschuh et al.
patent: 4937323 (1990-06-01), Garlich et al.
patent: 5008015 (1991-04-01), Davids et al.

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