DIIMONIUM SALT COMPOUND, NEAR-INFRARED ABSORBING FILTER AND OPTICAL INFORMATION RECORDING MEDIUM USING THE SAME

DIIMONIUM SALT COMPOUND, NEAR-INFRARED ABSORBING FILTER AND OPTICAL INFORMATION RECORDING MEDIUM USING THE SAME

Near infrared ray absorbing filter contains >=1 di-immonium salt compound. Near infrared ray absorbing filter contains >= 1 compound of formula (I); [Image] R 1-R 8>=1 is branched alkyl group; rings A and B : may be substituted; X : an anion necessary for neutralizing the electric charge. I...

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Bibliographische Detailangaben
Hauptverfasser: KITAYAMA, YASUYUKI, YAMAMURA, SHIGEO
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
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Zusammenfassung:Near infrared ray absorbing filter contains >=1 di-immonium salt compound. Near infrared ray absorbing filter contains >= 1 compound of formula (I); [Image] R 1-R 8>=1 is branched alkyl group; rings A and B : may be substituted; X : an anion necessary for neutralizing the electric charge. Independent claims are also included for: (1) a near infrared ray absorbing composition formed by adding the compound (I) to a resin; (2) a di-immonium salt compound; and (3) an optical information recording medium which contains (I) a recording layer.