Amino antipyrine based azo ligands and their metal complexes...

Details Amino antipyrine based azo ligands and their metal complexes... Amino antipyrine based azo ligands and their metal complexes...

2005-07-29

2009-12-01

Shosho, Callie E (Department: 1794)

Stock material or miscellaneous articles

Circular sheet or circular blank

Recording medium or carrier

C430S270160, C534S710000, C534S766000, C534S769000

Reexamination Certificate

active

07625621

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.

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