3-hydroxy-cyclohex-2-enone based azo dyes, and their use with anionic azo metal complex dyes
申请人:Clariant International Ltd.
公开号:EP1925642A1
公开(公告)日:2008-05-28
The present invention relates to the use of 3-hydroxy-cyclohex-2-enone azo based dyes and/or of azo metal complex dyes made thereof, and to compositions comprising 3-hydroxy-cyclohex-2-enone azo based dyes and anionic azo metal complex dyes with cationic basic yellow dyes 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 a 3-hydroxy-cyclohex-2-enone azo based dye and/or an azo metal complex dye made thereof, or a composition comprising a 3-hydroxy-cyclohex-2-enone azo based dye and a anionic azo metal complex dye with a cationic basic yellow dye in the optical layer.
本发明涉及使用3-羟基环己-2-烯酮偶氮基染料和/或由此制成的偶氮金属络合物染料,以及包含3-羟基环己-2-烯酮偶氮基染料和带有阳离子基本黄染料的阴离子偶氮金属络合物染料的组合物,在光学层中用于光学数据记录,最好用于使用波长高达450纳米的激光进行光学数据记录。该发明还涉及一种一次写多次读(WORM)型光学数据记录介质,能够使用蓝激光记录和复制信息,该介质采用3-羟基环己-2-烯酮偶氮基染料和/或由此制成的偶氮金属络合物染料,或者包含3-羟基环己-2-烯酮偶氮基染料和光学层中的带有阳离子基本黄染料的阴离子偶氮金属络合物染料的组合物。