Mineral oils: processes and products – Paraffin wax; treatment or recovery – With ureas
Patent
1976-04-19
1977-09-13
Levine, Herbert
Mineral oils: processes and products
Paraffin wax; treatment or recovery
With ureas
260 965C, C07B 2100, C10G 4304
Patent
active
040480550
ABSTRACT:
The useful process life of aqueous urea solutions used in mineral oil urea dewaxing processes may be significantly prolonged by contacting with an acidic ion exchange resin at least a portion of the urea solution recovered from n-paraffin-urea adduct decomposition. The useful life of these aqueous urea solutions is further enhanced by contacting the urea solution with activated carbon in addition to the ion exchange resin.
REFERENCES:
patent: 2588602 (1952-03-01), Adams et al.
patent: 2606214 (1952-08-01), Higley et al.
patent: 3954598 (1976-05-01), Franz et al.
Kunert Maximilian
Wegner Hans-Georg
Deutsche Texaco Aktiengesellschaft
Levine Herbert
McNulty William E.
Ries Carl G.
Whaley Thomas H.
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