Organic compounds -- part of the class 532-570 series – Organic compounds – Amino nitrogen containing
Reexamination Certificate
2007-01-09
2007-01-09
Davis, Brian (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Amino nitrogen containing
C564S480000
Reexamination Certificate
active
10897008
ABSTRACT:
The present invention is a process for producing polyoxyalkylene triamine by bringing polyoxyalkylene triol having at its terminal a hydroxyl group into contact with ammonia and hydrogen in the presence of a catalyst comprising ruthenium metal at an amount of 0.5 to 20% by weight of the total of the catalyst, the ruthenium metal being carried on at least one carrier selected from alumina, silica, silica-alumina, titanium dioxide, and titanium dioxide-silica.
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Fischer et al., Catalysis Today (1997), vol. 37, p. 167-189.
Furushima Tetsuaki
Jono Masaharu
Kao Corporation
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
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