申请人:Mitsubishi Kagaku Media Co., Ltd.
公开号:EP2070989A1
公开(公告)日:2009-06-17
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 the general formula (1) and Zn2+:
(wherein R1 represents a linear or branched alkyl group that may be substituted, or a cycloalkyl group that may be substituted; Y represents a linear or branched alkyl group substituted with at least two fluorine atoms; R2, R3, R4, R5 and R6 each independently represents a hydrogen atom or a linear or branched alkyl group that may be substituted, and R3 and R4, R4 and R5, or R5 and R6 may be bonded with each other to form a ring; and a proton is released from the compound of formula (1) to form the chelate dye together with Zn2+).
本发明提供了一种适用于能够高速记录的光学记录介质的记录层或具有多个记录层的光学记录介质的记录层的偶氮金属螯合染料,以及一种光学记录介质。该偶氮金属螯合染料由通式(1)表示的偶氮染料化合物和 Zn2+ 组成:
(其中 R1 代表可被取代的直链或支链烷基,或可被取代的环烷基;Y 代表至少被两个氟原子取代的直链或支链烷基;R2、R3、R4、R5 和 R6 各自独立地代表氢原子或可被取代的直链或支链烷基,R3 和 R4、R4 和 R5 或 R5 和 R6 可相互键合形成环;质子从式(1)化合物中释放出来,与 Zn2+ 一起形成螯合染料)。