OPTICAL MOLDING MATERIAL OF POLYCARBONATE RESIN HAVING HIGHLY PRECISE TRANSFERRING PROPERTY AND OPTICAL DISK FORMED THEREFROM

摘要

PROBLEM TO BE SOLVED: To provide an optical polycarbonate resin molding material having highly precise transferring property, suitable for precise transferring property to stamper shape, high speed cycle moldability and extremely suppressed in a material attached to stamper in production of optical recording medium obtained by molding polycarbonate resin, particularly high density recording medium.;SOLUTION: This optical polycarbonate resin molding material having highly precise transferring property is characterized in that weight average molecular weight (M) measured by gel permeation (GPC method) is 24,000 to 40,000 and the content of ultrahigh molecular polycarbonate resin having 60.000 weight molecular weight contained in the above polycarbonate is ≤12 wt.%.;COPYRIGHT: (C)2001,JPO