Organic compounds -- part of the class 532-570 series – Organic compounds – Four or more ring nitrogens in the bicyclo ring system
Patent
1996-04-15
1998-08-11
Grumbling, Matthew V.
Organic compounds -- part of the class 532-570 series
Organic compounds
Four or more ring nitrogens in the bicyclo ring system
546104, C07D41312, C07D21906, C07D21908
Patent
active
057928630
ABSTRACT:
An acridine derivative metal complex of formula 1 or formula 2 having a large absorption in the near-infrared range and a reduced absorption in the visible range, which acridine derivative metal complex is used in a transparent recording medium: ##STR1## where M is a metal atom, and X is a negative ion.
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Nagai Tomoaki
Ohashi Reiji
Ryu Yukiko
Yoshioka Hidetoshi
Grumbling Matthew V.
Nippon Paper Industries Co. Ltd.
Rao Deepak R.
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