Preparation of N-phenyl-benzoquinoneimine from hydroxydiphenylamines

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United States of America Patent

PATENT NO 6187937
SERIAL NO

09264989

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Abstract

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A hydroxydiphenylamine compound can be converted to an N-phenylquinoneimine by reacting the hydroxydiphenylamine with oxygen or an oxygen containing gas in the presence of a modified activated carbon catalyst, the catalyst having had surface oxides removed therefrom.

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Patent OwnerAddress
FLEXSYS AMERICA L P260 SPRINGSIDE DRIVE AKRON OH 44333

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Inventor Name Address # of filed Patents Total Citations
Fields, Jr Donald L Copley, OH 20 134
Lodaya, Jayant Shivji Akron, OH 2 3
Stern, Michael K Clayton, MO 29 432

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