发明名称 |
Pyridinone based azo dyes and their metal complex salts |
摘要 |
The present invention relates to pyridinone based azo dyes and/or of anionic azo metal complex dye salts made thereof with cationic basic yellow dyes, which are characterized by an unsaturated bond in beta-position to the endocyclic N atom of the pyridinone, and to their use in optical layers for optical data recording, preferably for optical data recording using a laser with a wavelength up to 450 nm. The invention further relates to a write once read many (WORM) type optical data recording medium capable of recording and reproducing information with radiation of blue laser, which employs pyridinone based azo dyes and/or anionic azo metal complex dye salts made thereof with cationic basic yellow dyes, which are characterized by an unsaturated bond in beta-position to the endocyclic N atom of the pyridinone, in the optical layer.
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申请公布号 |
EP1992667(A1) |
申请公布日期 |
2008.11.19 |
申请号 |
EP20070290584 |
申请日期 |
2007.05.09 |
申请人 |
CLARIANT FINANCE (BVI) LIMITED |
发明人 |
LUECKE, LARS;KLEIN, CEDRIC;GRACIET, JEAN-CHRISTOPHE;WINTER, MARTIN, ALEXANDER |
分类号 |
C09B29/00;C07D213/85;C09B29/36;C09B69/02;C09B69/04;G11B7/246;G11B7/249 |
主分类号 |
C09B29/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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