Optical disk substrate and optical information-storage medium
    3.
    发明授权
    Optical disk substrate and optical information-storage medium 失效
    光盘基板和光信息存储介质

    公开(公告)号:US5215799A

    公开(公告)日:1993-06-01

    申请号:US663468

    申请日:1991-03-04

    IPC分类号: G11B7/243

    摘要: Disclosed is an optical disk substrate which comprises a polycarbonate resin containing not more than 1 ppm of each metal belonging to the IA group and the VIII group of the Periodic Table, and not more than 0.3 mol percent, per polymerization repeating unit, of a terminal hydroxyl group. Also disclosed is an optical information-storage medium comprising an optical recording layer formed on the optical disk substrate.

    摘要翻译: 公开了一种光盘基板,其包含聚碳酸酯树脂,该聚碳酸酯树脂含有不超过1ppm的属于IA族的每种金属和周期表的VIII族,并且每个聚合重复单元的末端不超过0.3mol% 羟基。 还公开了一种光学信息存储介质,其包括形成在光盘基板上的光学记录层。