Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Reexamination Certificate
2008-09-30
2008-09-30
Nguyen, Cam N. (Department: 1793)
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
C502S254000, C502S306000, C502S307000, C502S308000, C502S309000, C502S310000, C502S311000, C502S312000, C502S313000, C502S314000, C502S315000, C502S316000, C502S317000, C502S318000, C502S319000, C502S320000, C502S323000, C502S324000, C502S349000, C502S350000, C502S355000, C502S415000, C502S439000
Reexamination Certificate
active
11603213
ABSTRACT:
A catalyst for gas phase oxidation of methylbenzenes in the presence of molecular oxygen to produce corresponding aromatic aldehydes, a method for preparing the catalyst, and a method for producing aromatic aldehydes from methylbenzenes by using the catalyst. The catalyst comprises a compound represented by the following formula (1):in-line-formulae description="In-line Formulae" end="lead"?WaXbYcOx (1)in-line-formulae description="In-line Formulae" end="tail"?wherein W represents a tungsten atom, X represents one or more alkali metals selected from the group consisting of Li, Na, K, Rb, and Cs, Y represents one or more elements selected from the group consisting of Fe, Co, Ni, Cu, Mn, Re, Cr, V, Nb, Ti, Zr, Zn, Cd, Y, La, Ce, B, Al, Sn, Mg, Ca, Sr, and Ba, O stands for an oxygen atom, and the ratio of a:b:c is 12:0.001˜1:0˜5.
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Chae Jong Hyun
Lee Dong Il
Lee Won Ho
Lee Won Jae
Park In Kyu
LG Chem Ltd.
McKenna Long & Aldridge LLP
Nguyen Cam N.
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