Continuous recirculation of the olefin which has not been...

Details Continuous recirculation of the olefin which has not been... Continuous recirculation of the olefin which has not been...

2003-10-23

2009-06-09

Oh, Taylor Victor (Department: 1625)

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C549S529000, C549S531000

Reexamination Certificate

active

07544818

ABSTRACT:
Process for the continuous recirculation of the olefin which has not been reacted in the oxidation of olefins by means of hydroperoxide to give oxiranes and is present in the offgas stream formed during the oxidation, which comprises the steps (i) to (iii)(i) separating the olefin from the offgas stream by absorption in a hydrocarbon,(ii) desorbing the olefin from the hydrocarbon,(iii) recirculating the olefin obtained in step (ii) to the oxidation process.

REFERENCES:
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patent: 0 719 768 (1996-07-01), None
patent: 00/07965 (2000-02-01), None
patent: 01/96271 (2001-12-01), None
patent: 02/102496 (2002-12-01), None
Aldrich , 1998-1999, p. 1560, (2 pages).

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