Organic compounds -- part of the class 532-570 series – Organic compounds – Chalcogen bonded directly to ring carbon of the purine ring...
Patent
1982-09-20
1984-04-17
Rizzo, Nicholas S.
Organic compounds -- part of the class 532-570 series
Organic compounds
Chalcogen bonded directly to ring carbon of the purine ring...
544275, C07D23996
Patent
active
044436017
ABSTRACT:
Caffeine adsorbed on caffeine adsorbents is recovered by contacting the carbon with a solvent, preferably an aqueous solution of ethylene carbonate or propylene carbonate. The caffeine adsorbent is contacted with the solvent for a period time sufficient to remove at least a portion of the caffeine adsorbed thereon and then separated from caffeine-containing solvent. The caffeine may be recovered from the solvent by precipitation.
REFERENCES:
patent: 2472881 (1949-06-01), Bender
patent: 4298736 (1981-11-01), Katz et al.
Hall Bertrand J.
Hickernell Gary L.
Karmiol Mark H.
Crisona R. L.
General Foods Corporation
Rizzo Nicholas S.
Savoie T. R.
Sullivan T. V.
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