| abstract |
PROBLEM TO BE SOLVED: To provide a molding material for an optical recording medium having excellent moldability and low birefringence. SOLUTION: A bisphenol compound of the general formula (A), a compound having 4,4 ′-[1,3-phenylene (1-methylethylidene)] bisphenol and a compound having a phenolic hydroxyl group having three or more functional groups, a carbonate-forming compound and Is 0.3 to 0.5 dl / g, a molding material for optical recording media comprising polycarbonate. Embedded image (Wherein, R 1 to R 4 are each independently a hydrogen atom, an alkyl group having 1 to 5 carbon atoms, an aryl group having 6 to 12 carbon atoms, Represents an alkenyl group having 2 to 5 carbon atoms, an alkoxy group having 1 to 5 carbon atoms or an aralkyl group having 7 to 17 carbon atoms. ) |