Distillation: processes – separatory – Adding material to distilland except water or steam per se – At least two materials
Patent
1992-10-08
1993-08-03
Bascomb, Jr., Wilbur
Distillation: processes, separatory
Adding material to distilland except water or steam per se
At least two materials
203 56, 203 57, 203 60, 203 61, 203 62, 203 63, 203 64, 562609, 568410, B01D 340, C07C 4583, C07C 5302
Patent
active
052325580
ABSTRACT:
4-Methyl-2-pentanone cannot be easily separated from formic acid by distillation because of the closeness of their boiling points. 4-Methyl-2-pentanone can be readily removed from formic acid by extractive distillation. Typical effective agents are dimethylsulfoxide (DMSO) and 2-undecanone; DMSO and octanoic acid; DMSO and hexyl acetate.
REFERENCES:
patent: 2954392 (1960-09-01), Rylander
patent: 3013954 (1961-12-01), Pacoud et al.
patent: 3265592 (1966-08-01), Van Der Weel
patent: 4459178 (1984-07-01), Berg et al.
patent: 4793901 (1988-12-01), Berg et al.
Berg Lloyd
Paffhausen Marc W.
Bascomb, Jr. Wilbur
Berg Lloyd
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