| abstract |
The present invention provides styryl dyes whichnexert satisfactory recording properties in high-densitynoptical recording media, and uses thereof. These are solvednby providing dimethine styryl dyes having specific structures,nlight absorbents and optical recording media which comprise thendimethine styryl dyes, and a process for producing thendimethine styryl dyes which comprises a step of reacting annaromatic amine compound having an aldehyde group with eitherna 3,3-dimethylbenzoindolium compound having an active methylngroup or a 3,3-dimethylindolium compound having annaminosulfonyl group. |