Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Reexamination Certificate
2005-08-30
2005-08-30
Shippen, Michael L. (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
C568S799000
Reexamination Certificate
active
06936738
ABSTRACT:
A process is described for the preparation of phenol characterized in that the phenol is obtained by means of the hydrodeoxygenation of benzene-diols with hydrogen, operating in continuous, in an aqueous solution, at temperatures ranging from 250 to 500° C., at pressures of 1-100 bar and in the presence of a catalyst based on elements of group VIB or group VIII of the periodic table.
REFERENCES:
patent: 6133487 (2000-10-01), Ungarelli et al.
patent: 849 557 (1952-09-01), None
Buzzoni Roberto
Cesana Alberto
Dalloro Leonardo
Rivetti Franco
ENI S.p.A.
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Polimeri Europa S.p.A.
Shippen Michael L.
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