| 摘要 |
PURPOSE:To provide an optical recording material comprising an organic substance capable of being provided in the form of a thin film by a coating system, having high sensitivity in writing with laser light, particularly, semiconductor laser light and having favorable preservation stability, by constituting an optical recording material of a base and a recording layer comprising a specified light- absorptive substance. CONSTITUTION:The optical recording material is constituted of the base and the recording layer comprising a light-absorptive substance of general formula [I], wherein each of R<1>, R<2>, R<3> and R<4> is subst. or unsubst. 1-22C alkyl, -(C2H4 O)nY or formula II, wherein X is halogen, Y is hydrogen, aryl or subst. or unsubst. alkyl, n is an integer of 1-4, m is 0, 1 or 2, Z is hydrogen, carboxylic acid group, carboxylic acid ester group, aryl, subst. or unsubst. alkyl or subst. or unsubst. alkoxyl, and A represent a metal of Group IB, IIA, IIB, IIIA, IIIB, IVA, IVB, VB or VIII of the Periodic Table or a compound comprising the metal. |
