Liquid purification or separation – Processes – Liquid/liquid solvent or colloidal extraction or diffusing...
Patent
1992-06-24
1993-07-27
Spear, Frank
Liquid purification or separation
Processes
Liquid/liquid solvent or colloidal extraction or diffusing...
21050023, B01D 6128
Patent
active
052308022
ABSTRACT:
This invention provides novel organic acids which exhibit utility as liquid ion exchanges suitable for use in an invention solvent extraction process. Illustrative of an invention organic acid is a compound corresponding to the formula: ##STR1## where each of R.sub.1 and R.sub.2 is a C.sub.3 -C.sub.16 branched alkyl group.
REFERENCES:
patent: 4132682 (1979-01-01), Seita et al.
patent: 4200569 (1980-04-01), Ladbrooke et al.
Ferguson Robert N.
Howe Charles R.
Secor Henry V.
Seeman Jeffrey I.
Philip Morris Incorporated
Philip Morris Products Inc.
Schardt James E.
Spear Frank
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