Process for the epoxidation of olefins

Details Process for the epoxidation of olefins Process for the epoxidation of olefins

2005-01-04

2005-01-04

Owens, Amelia A. (Department: 1625)

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C549S524000, C549S529000

Reexamination Certificate

active

06838572

ABSTRACT:
A continuous process for the epoxidation of olefins with hydrogen peroxide in the presence of a heterogeneous catalyst promoting the epoxidation reaction, whereby the aqueous reaction mixture contains i) an olefin; ii) hydrogen peroxide; iii) less than 100 wppm of alkali metals, earth alkali metals, both irrespective whether in ionic, complex or covalently bonded form, bases or cations of bases having a pkBof less than 4.5, or combinations thereof; and, iv) at least 100 wppm of bases or cations of bases having a pkBof at least 4.5 or combinations thereof, whereby the wppm are based on the total weight of hydrogen peroxide in the reaction mixture.

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