Polycarbonatzusammensetzung, Substrat für einmal beschreibbare mehrmals lesbare optische Diskette, und einmal beschreibbare mehrmals lesbare optische Diskette unter Verwendung dieses Substrat, und Verfahren zur Herstellung einer einmal beschreibbaren mehrmals lesbaren optischen Diskette

摘要

A polycarbonate composition excellent in both antistatic property and coloring matter coatability containing (a) a polycarbonate obtained by an ester exchange process, and (b) a compound having a molecular weight of from 300 to 8,000 and having any of ester bond, carbonate bond, amide bond and urethane bond in its molecule and an aromatic hydrocarbon group substituted by at least one alkyl group at the molecular end thereof, a write once read many optical disc substrate and a write once read many optical disc using the same and a process for the production of a write once read many optical disc are described.