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

PROBLEM TO BE SOLVED: To provide a near-IR absorbing filter having excellent heat resistance. SOLUTION: The filter contains a compound expressed by formula (1), wherein each of R1to R8represents a branched chain alkyl group, however, not all of R1to R8are iso-butyl groups, a ring A and a ring B may...

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Bibliographische Detailangaben
Hauptverfasser:	YAMAMURA SHIGEO, KITAYAMA YASUYUKI
Format:	Patent
Sprache:	eng
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS ADHESIVES CHEMISTRY DYES INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER LAKES MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS MORDANTS NATURAL RESINS OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS ORGANIC CHEMISTRY ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES PAINTS PHYSICS POLISHES
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a near-IR absorbing filter having excellent heat resistance. SOLUTION: The filter contains a compound expressed by formula (1), wherein each of R1to R8represents a branched chain alkyl group, however, not all of R1to R8are iso-butyl groups, a ring A and a ring B may have a substituent, and X represents an anion necessary to neutralize electric charges. COPYRIGHT: (C)2005,JPO&NCIPI