ORGANIC DYE USING PYRAZOLONE DERIVATIVE

PROBLEM TO BE SOLVED: To provide an organic dye having an absorption band corresponding to wavelength for so-called blue laser and a new organic compound capable of readily forming a film. SOLUTION: 4-Benzilidene-1-phenyl-1H-pyrazol-5-one derivatives represented by general formula (A) are used as ne...

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Bibliographic Details
Main Authors TANABE TOSHIO, TANAKA NAOKI, YAMAGATA MASATO
Format Patent
LanguageEnglish
Published 22.03.2007
Subjects
ADHESIVES
CHEMISTRY
DYES
HETEROCYCLIC COMPOUNDS
LAKES
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
MORDANTS
NATURAL RESINS
ORGANIC CHEMISTRY
ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES
PAINTS
POLISHES
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Summary:PROBLEM TO BE SOLVED: To provide an organic dye having an absorption band corresponding to wavelength for so-called blue laser and a new organic compound capable of readily forming a film. SOLUTION: 4-Benzilidene-1-phenyl-1H-pyrazol-5-one derivatives represented by general formula (A) are used as new compounds of organic dyes. These derivatives exhibit maximum absorption wavelength in 300-450 nm wavelength and exhibit large absorption particularly in the vicinity of 400 nm wavelength. The absorption characteristic corresponds to the wavelength of so-called blue laser and enables application to a medium, etc. Since the compound represented by general formula (A) (wherein R3is a 2-ethylhexyl ester group) has good solubility to alcohols, ketones, etc., and has a characteristic which is hard to crystallize when the compound is formed into a film by using the compound as the organic dye, the derivative has also good physical characteristic. COPYRIGHT: (C)2007,JPO&INPIT
Bibliography:Application Number: JP20050257678