BIS-STYRYL DYE, ITS PRODUCTION PROCESS AND ITS APPLICATION FOR HIGH-DENSITY OPTICAL RECORDING MEDIUM

摘要

PPROBLEM TO BE SOLVED: To provide bis-styryl dyes and a structure of high density recording medium and its production process using it. PSOLUTION: The bis-styryl dyes are obtained by such a reaction as shown by formulae (II), (III) and (IV) wherein Y represents such as O and S, and R1-R4 represent such as H and an alkyl group. PCOPYRIGHT: (C)2009,JPO&INPIT