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Basic Yellow Dyes as Dye Component for Optical Data Recording Media
申请人:Steffanut Pascal
公开号:US20090018318A1
公开(公告)日:2009-01-15
The present invention relates to the use of Basic Yellow dyes as dye component for optical data recording media. In a preferred aspect the present invention relates to Basic Yellow dyes together with a metalazo complex dye as dye components for optical data recording media.
In a more preferred aspect, the invention relates to a write once read many (WORM) type optical data recording medium capable of recording and reproducing information with radiation of blue laser of preferably 405 nm, which employs a Basic Yellow dye together with a metalazo complex dye and a further recording dye in the optical layer.
An efficient synthesis of 2-[1-methylpyridin-2(1H)-ylidene]malononitrile derivatives have been identified, the reactions have been proved to be stereoselective; the spatial location of substituents has been determined.