The photochromic material and the optical storage medium using.

摘要

PURPOSE: To obtain a photochromic material which can form a J-associated body and a H-associated body with one kind of material and can be used for multi-wavelength optical recording by using a photochromic material of specified structure. ;CONSTITUTION: The photochromic material expressed by formula I is used. In formula I, R₁ and R₂ are alkyl groups of 1-30 carbon number, at least one of R₃-R₆ is one group selected from amino groups, alkoxy groups of 1-5 carbon number, and alkylamino groups of 1-5 carbon number. At least one of R₄ and R₆ is one group selected from amino groups, alkoxy groups of 1-5 carbon number, or alkylamino groups of 1-5 carbon number. In formula I, at least one of R₄ and R₆ is a methoxy group. Further, in formula I, R₁ is an octadecyl group, R₂ is a heneicocyl group, R₃, R₅ and R₆ are hydrogen, and R₄ is a methoxy group.;COPYRIGHT: (C)1993,JPO&Japio