Process for purifying propylene oxide

Details Process for purifying propylene oxide Process for purifying propylene oxide

1993-02-16

1993-09-28

Evans, Joseph E.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

521159, 549538, 568679, C07D30132, C07D30304, C07C 4313, C08G 1800

Patent

active

052487946

ABSTRACT:
A process for purifying propylene oxide containing an unacceptable quantity of a poly(propylene oxide) polymer contaminant having a molecular weight of at least about 50,000, comprising the step of filtering propylene oxide containing such polymer contaminant through one or more membranes to provide a propylene oxide product fraction having an acceptable quantity of poly(propylene oxide) polymer contaminant therein and a second fraction which is more highly concentrated in such polymer contaminant.

REFERENCES:
patent: 4692535 (1987-09-01), Larson et al.
patent: 4704463 (1987-11-01), Blytas
patent: 5107002 (1992-04-01), Shih

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