申请人:KYOWA HAKKO KOGYO CO., LTD.
公开号:EP1152001A9
公开(公告)日:2002-02-27
An object of the present invention is to provide novel squarylium compounds having spectroscopic properties, light resistance, solubility and thermal decomposition properties suitable for a recording material for DVD-R, and optical recording media using the same. More particularly, the present invention provides novel asymmetric squarylium compounds represented by the general formula (I), having pyrazole and indoline skeletons in the molecule. In addition, the present invention provides optical recording media having a recording layer comprising said asymmetric squarylium compound.
本发明的目的是提供具有光谱特性、耐光性、溶解性和热分解特性的新型鳞片化合物,这些特性适用于 DVD-R 的记录材料,以及使用这些特性的光学记录介质。更具体地说,本发明提供了通式(I)表示的新型不对称鳞片化合物,其分子中具有吡唑和吲哚啉骨架。此外,本发明还提供了具有包含所述不对称鳞化合物的记录层的光学记录介质。