Squarylium compounds and optical recording medium containing...

Details Squarylium compounds and optical recording medium containing... Squarylium compounds and optical recording medium containing...

C - Chemistry, Metallurgy

07

D

C07D 403/08 (2006.01) G11B 7/244 (2006.01)

Patent

CA 2362642

A novel squarylium compound having spectral properties, light resistance, solubility, and thermal decomposability which make the compound suitable for use in DVD-R recording materials; and an optical recording medium containing the compound. The compound is a novel asymmetric squarylium compound represented by general formula (I) which contains in the molecule a pyrazole skeleton and indoline skeleton. The optical recording medium has a recording layer comprising the asymmetric squarylium compound.

Les propriétés spectrales, la résistance à la lumière, les propriétés de solubilité et d'aptitude à la décomposition thermique qui caractérisent ce nouveau composé de squarylium permettent de l'utiliser pour les matériaux d'enregistrement DVD-R. En plus de ce nouveau composé, cette invention concerne un support d'enregistrement contenant ce composé. Ce composé est un nouveau composé de squarylium asymétrique représenté par la formule générale (I), contenant dans ses molécules un squelette de pyrazole et un squelette d'indoline. Le support d'enregistrement optique comporte une couche d'enregistrement contenant le composé de squarylium asymétrique.

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