申请人:Kabushiki Kaisha Hayashibara Seibutsu Kagaku Kenkyujo
公开号:EP1178083A1
公开(公告)日:2002-02-06
The present invention has objects to provide organic dye compounds having their absorption maxima in a region ranging from an ultraviolet region to a relatively short-wavelength visible region and to provide uses thereof, and solves the objects by specific monomethine cyanine dyes, light absorbents and optical recording media comprising the monomethine cyanide dyes, and a process for producing the monomethine cyanine dyes which comprises a step of either reacting a quaternary ammonium salt of nitrogen-atom-containing heterocyclic compound having a reactive methyl group with a quaternary ammonium salt of nitrogen-atom-containing heterocyclic compound having an appropriate leaving group.
本发明的目的是提供具有从紫外区到相对短波长可见区的最大吸收区域的有机染料化合物,并提供其用途,本发明通过特定的一甲基氰基染料、吸光剂和包含一甲基氰基染料的光学记录介质来解决上述目的、以及一种生产一甲基氰基染料的工艺,该工艺包括以下步骤:将具有活性甲基的含氮原子杂环化合物的季铵盐与具有适当离去基团的含氮原子杂环化合物的季铵盐反应。