Process for the purification of thermolabile compounds by distil

Details Process for the purification of thermolabile compounds by distil Process for the purification of thermolabile compounds by distil

1987-10-23

1991-02-05

Bascomb, Wilbur

Distillation: processes, separatory

Vaporization zone under positive pressure or vacuum

203 99, 159 22, 159 471, 202175, 549274, B01D 300, C07D31912

Patent

active

049902229

ABSTRACT:
The invention relates to a new process for the purification, by distillation, of thermolabile compounds wherein a thermolabile compound is introduced into a twin screw extruder which is heated, in at least one zone, to the boiling temperature of the compound. The volatilized compound is drawn off and condensed.

REFERENCES:
patent: 2992679 (1961-07-01), Twaddle
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patent: 3070836 (1963-01-01), DeHaven et al.
patent: 4107787 (1978-08-01), Ocker
patent: 4136251 (1979-01-01), Bice et al.
patent: 4318773 (1982-03-01), Ullrich et al.
patent: 4650851 (1987-03-01), Rhum et al.
patent: 4692290 (1987-09-01), Steele et al.
patent: 4727163 (1988-02-01), Bellis

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