Disazo metal chelate compounds for optical recording media
US5231173A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 14, 1992 |
| Grant date | Jul 27, 1993 |
| Priority date | — |
| Expiry date | Jan 14, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/2595
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A metal chelate compound of a dis-azo compound represented by the following formula (I) with a metal: ##STR1## (wherein A is a residue forming a heterocyclic ring together with the carbon atom and the nitrogen atom to which it is bonded, X is a residue forming an aromatic group together with the two carbon atoms to which it is bonded, and D is an aromatic residue which may have a substituent, or a heterocyclic amine residue which may have a substituent, and Y is a group having active hydrogen) and an optical recording medium having a recording layer provided on a substrate so that information can be written in and/or read out by a laser, wherein the recording layer contains a metal chelate compound of the dis-azo compound represented by the above formula (I), with a metal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.