| 摘要 |
PURPOSE:To obtain a light absorbing compound useful for an optical recording medium, etc., having a specific chemical structure and excellent in sensitivity and recording characteristics. CONSTITUTION:The objective light absorbing compound is expressed by the formula [Dye is dithiol metal complex-based, phthalocyanine-based, naphthalocyanine-based, naphthoquinone-based, anthraquinone-based, cyanine- based, merocyanine-based, oxonol-based, triphenylmethane-based, diphenylmethane-based, squalylium-based, pyrylium-based, xanthene-based, oxazine-based, azo-based, indigo-based, indoaniline-based, indophenol-based, styryl-based, spiropyran-based, fluoran-based and azulene-based residue of light absorbing compounds; OR<1>-OR<n> express a substituent on aromatic rings in Dye, (substituted) 1-20C saturated hydrocarbonoxy and (substituted) 2-20C unsaturated hydrocarbonoxy; here, >=1 of OR<1>-OR<n> are unsaturated hydrocarbonoxy; (n) is 1-10]. |
