申请人:Mitsubishi Kagaku Media Co., Ltd.
公开号:EP2085430A1
公开(公告)日:2009-08-05
The invention provides an azo metal chelate dye suitable for use in a recording layer of an optical recording medium capable of high-speed recording or an optical recording medium having plural recording layers, and an optical recording medium. The azo metal chelate dye comprises an azo dye compound represented by general formula (1) and a metal:
(wherein R1 represents a linear or branched alkyl group that may be substituted or a cycloalkyl group that may be substituted; R2 and R3 each independently represents a hydrogen atom, a linear or branched alkyl group that may be substituted, an aryl group that may be substituted, or a heterocyclic group that may be substituted; R4, R5, R6, R7, and R8 each independently represents a hydrogen atom or a linear or branched alky group that may be substituted, and R4 and R5, R4 and R6, or R5 and R7 may be bonded to each other to form a ring; Y represents a linear or branched alkyl group substituted with at least two fluorine atoms; and the chelate dye is constituted of the compound represented by general formula (1) from which a proton is released, and the metal).
本发明提供了一种适用于高速记录或具有多个记录层的光记录介质的记录层中使用的偶氮金属螯合染料以及光记录介质。该偶氮金属螯合染料包括由通式(1)表示的偶氮染料化合物和金属:(其中R1表示可被取代的线性或支链烷基或可被取代的环烷基;R2和R3各自独立地表示氢原子、可被取代的线性或支链烷基、可被取代的芳基或可被取代的杂环基;R4、R5、R6、R7和R8各自独立地表示氢原子或可被取代的线性或支链烷基,且R4和R5、R4和R6或R5和R7可以相互结合形成环;Y表示至少带有两个氟原子的线性或支链烷基;螯合染料由通式(1)表示的从中释放质子的化合物和金属构成)。