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US 7,625,621 B2Granted
Amino antipyrine based azo ligands and their metal complexes for use as optical recording media
AssigneeClariant Finance (BVI) Limited
InventorPascal Steffanut
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Abstract
The present invention provides novel azo dye material based on antipyrine azo structure and metal complexes containing such azo compounds which are suitable for optical recording media. The dyes exert high light-fastnesses properties and excellent recording characteristics. In particular the invention relates to optical layers comprising such dyes, to a method for manufacturing such optical layers and to optical recording media comprising such optical layers.
Claims11
An antipyrine azo ligand of the formula (I)
- wherein
- A is cyano, C1-4alkoxy, carbamyl, —N—C1-4alkylcarbamyl, wherein the alkyl is unsubstituted or substituted by C1-4 alkoxy;
- N-Phenylcarbamyl, wherein the phenyl is unsubstituted or substituted by C1-4alkyl or C1- alkoxy;
- acetyl, benzoyl, 4-nitrophenyl or 4-cyanophenyl;
- R1 and R10 are independently selected from the group consisting of hydrogen, C1-8alkyl, phenyl and benzyl;
- R2, R3 and R4 independently are selected from the group consisting of hydrogen, —CH3, —C2H5, —CH(CH3)2, phenyl, —CN, —Cl, —Br, —CN, and —CF3;
- R5 to R9 independently are selected from the group consisting of hydrogen, —Cl, —CN, —Br, —CF3, C1-4 alkyl, chloromethyl, C1-4-alkoxymethyl, phenoxymethyl, NO2 and sulfonamide group.
4 more elements
An antipyrine azo metal complex dye compound of the formula (II)
- wherein
- A is cyano, C1-4alkoxy, carbamyl, —N—C1-4alkylcarbamyl, wherein the alkyl is unsubstituted or substituted by C1-4alkoxy;
- N-Phenylcarbamyl, wherein the phenyl is unsubstituted or substituted by C1-4alkyl or C1-4alkoxy;
- acetyl, benzoyl, 4-nitrophenyl or 4-cyanophenyl;
- R1 and R10 are independently selected from the group consisting of hydrogen, C1-8alkyl, phenyl and benzyl;
- R2, R3 and R4 independently are selected from the group consisting of hydrogen, —CH3, —C2H5, —CH(CH3)2, phenyl, —CN, —Cl, —Br, —CN, and —CF3;
- R5 to R9 independently are selected from the group consisting of hydrogen, —Cl, —CN, —Br, —CF3, C1-4 alkyl, chloromethyl, C1-4-alkoxymethyl, phenoxymethyl, NO2 and sulfonamide group and
- M is a metal atom.
5 more elements
Dependencies are inferred from the claim text.