CYANINE COMPOUND, OPTICAL RECORDING MATERIAL UTILIZING THE COMPOUND, AND OPTICAL RECORDING MEDIUM
申请人:Adeka Corporation
公开号:EP1826208A1
公开(公告)日:2007-08-29
The cyanine compound of the present invention is represented by general formula (I) below and suitable as an optical recording material used in a recording layer of optical recording media on which recording and play-back are conducted with laser beam. The cyanine compound of the present invention particularly exhibits appropriate thermal decomposition behavior to attain sensitivity compatible with high-speed recording.
(In the formula, each of ring A and ring B represents an optionally substituted benzene or naphthalene ring; each of R1 and R2 independently represents a C1-4 alkyl group or an optionally substituted benzyl group; at least one of R1 and R2 is an optionally substituted benzyl group; X represents O, S, or NY; each of Y, Y1, and Y2 independently represents a hydrogen atom or a C1-30 organic group; Z represents a hydrogen atom, a halogen atom, or a cyano group; Anm- represents an m-valent anion; m represents an integer of 1 or 2; and p represents a coefficient to keep an electric charge neutral.)
本发明的氰基化合物由以下通式(I)表示,适用于光学记录介质的记录层中的光 学记录材料,该介质使用激光束进行记录和回放。本发明的氰基化合物尤其具有适当的热分解特性,可达到与高速记录相适应的灵敏度。
(式中:环 A 和环 B 各代表一个任选取代的苯环或萘环;R1 和 R2 各独立地代表一个 C1-4 烷基或一个任选取代的苄基;R1 和 R2 中至少有一个是任选取代的苄基;X 代表 O、S 或 NY;Y、Y1 和 Y2 各自独立地代表氢原子或 C1-30 有机基团;Z 代表氢原子、卤素原子或氰基;Anm- 代表 m 价阴离子;m 代表 1 或 2 的整数;p 代表使电荷保持中性的系数。)