Catalyst – solid sorbent – or support therefor: product or process – Regenerating or rehabilitating catalyst or sorbent – Treating with a liquid or treating in a liquid phase,...
Reexamination Certificate
2006-01-03
2006-01-03
Silverman, Stanley S. (Department: 1754)
Catalyst, solid sorbent, or support therefor: product or process
Regenerating or rehabilitating catalyst or sorbent
Treating with a liquid or treating in a liquid phase,...
C502S022000
Reexamination Certificate
active
06982235
ABSTRACT:
A process for regenerating a solid catalyst which has been used for producing propylene oxide through an epoxidation reaction of propylene with an organic peroxide in a reactor packed with the solid catalyst, which comprises allowing a liquid to flow through the catalyst packed in the reactor at a temperature not lower than the maximum reaction temperature of the epoxidation reaction.According to the present invention, a catalyst can be regenerated with extremely high efficiency without taking the catalyst to be regenerated out of the reactor.
REFERENCES:
patent: 6365761 (2002-04-01), Derks et al.
patent: WO 98/28072 (1998-07-01), None
patent: WO 99/01445 (1999-01-01), None
patent: WO 01/12617 (2001-02-01), None
Ohmae Toshikazu
Tsuji Junpei
Silverman Stanley S.
Strickland Jonas N.
Sughrue & Mion, PLLC
Sumitomo Chemical Company Limited
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