Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate
2007-09-26
2009-06-30
Gallis, David E. (Department: 1625)
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
C549S537000, C502S415000
Reexamination Certificate
active
07553980
ABSTRACT:
A process for initiating a highly selective ethylene oxide catalyst is provided in which the highly selective ethylene oxide catalyst is operated first as a ‘standard’ Ag-based catalyst (e.g., a catalyst that contains only silver and alkali metal, especially cesium). Moreover, the inventive initiation procedure is more efficient when the concentration of carbon dioxide in the feed is higher than 6 vol. %, and even more efficient when the concentration of carbon dioxide in the feed is higher than 10 vol. %, of the feed mixture during the initiation period.
REFERENCES:
patent: 3563914 (1971-02-01), Wattimena
patent: 3702259 (1972-11-01), Nielsen
patent: 4761394 (1988-08-01), Lauritzen
patent: 4766105 (1988-08-01), Lauritzen
patent: 4874879 (1989-10-01), Lauritzen et al.
patent: 4908343 (1990-03-01), Bhasin
patent: 5011807 (1991-04-01), Hayden et al.
patent: 5057481 (1991-10-01), Bhasin
patent: 5099041 (1992-03-01), Hayden et al.
patent: 5102848 (1992-04-01), Soo et al.
patent: 5155242 (1992-10-01), Shankar et al.
patent: 5187140 (1993-02-01), Thorsteinson et al.
patent: 5407888 (1995-04-01), Herzog et al.
patent: 5801259 (1998-09-01), Kowaleski
patent: 7102022 (2006-09-01), Evans et al.
patent: 2004/0049061 (2004-03-01), Lockemeyer et al.
patent: 2004/0171852 (2004-09-01), Chipman et al.
patent: 2007/0208186 (2007-09-01), Lockmeyer
Billig Barry Jay
Castagnola Norma B.
Rizkalla Nabil
Chandrakumar Nizal S.
Gallis David E.
Scully , Scott, Murphy & Presser, P.C.
SD Lizenzverwertungsgesellschaft mbH & Co. KG
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