Process for preparing high-purity cyclopropyl methyl ketone

Details Process for preparing high-purity cyclopropyl methyl ketone Process for preparing high-purity cyclopropyl methyl ketone

1998-03-02

2000-04-04

Manoharan, Virginia

Distillation: processes, separatory

Plural distillations performed on same material

One a distillation under positive pressure or vacuum

203 99, 203DIG19, 568338, B01D 300, C07C 49293

Patent

active

060456620

ABSTRACT:
A process for preparing high-purity cyclopropyl methyl ketone from compositions which contain cyclopropyl methyl ketone, 4,5-dihydro-2-methylfuran, addition products of 4,5-dihydro-2-methylfuran by a continuous rectification process in which at least a portion of the composition to be purified is introduced into a rectification apparatus via a side feed located above the bottom portion of the apparatus.

REFERENCES:
patent: 5254739 (1993-10-01), Hunston et al.
patent: 5336809 (1994-08-01), Bohm et al.
patent: 5629455 (1997-05-01), Kaufhold et al.
patent: 5763627 (1998-06-01), Kaufhold
Perry et al, "Distillation", Technique of Organic Chemistry, vol. IV, 1965, p. 3.

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