申请人:Kabushiki Kaisha Hayashibara Seibutsu Kagaku Kenkyujo
公开号:EP1088857A1
公开(公告)日:2001-04-04
An organic dye compound which has excellent recording properties in an optical recording medium for high-density recording; and a use of the compound. The compound is an asymmetric trimethine-type cyanine dye having a specific structure and specific properties. Also provided are: a light absorber containing the cyanine dye; an optical recording medium; and a process for producing the cyanine dye through the step of reacting either of a 3,3-dimethyl-5-nitroindolium compound and a 3,3-dimethyl-5-sulfonamidoindolium compound each having an active methyl group or a suitable eliminable group with a 3,3-dimethyl-benzoindolium compound having an active methyl group or a suitable eliminable group.
一种在用于高密度记录的光学记录介质中具有优异记录性能的有机染料化合物;以及该化合物的用途。该化合物是一种不对称三甲胺型氰基染料,具有特定的结构和特性。此外,还提供了:一种含有该氰基染料的光吸收剂;一种光学记录介质;以及一种生产该氰基染料的工艺,该工艺的步骤是:将一种 3,3-二甲基-5-硝基吲哚鎓化合物和一种 3,3-二甲基-5-磺酰胺基吲哚鎓化合物中各自具有一个活性甲基或一个合适的可消除基团的化合物与一种具有一个活性甲基或一个合适的可消除基团的 3,3-二甲基-苯并吲哚鎓化合物中的任一种进行反应。