Method of enhancing pit replication in optical disks
    3.
    发明授权
    Method of enhancing pit replication in optical disks 失效
    增加光盘中凹坑复制的方法

    公开(公告)号:US06734277B2

    公开(公告)日:2004-05-11

    申请号:US10141678

    申请日:2002-05-09

    IPC分类号: C08G6400

    CPC分类号: C08G64/14 G11B7/2534

    摘要: Polycarbonate compositions incorporating long chain alkylphenol endgroups, for example cardanol, show enhanced pit replication characteristics when molded into optical disks. The enhancement in molding performance is especially pronounced at the shortest mold cycle times tested. Thus, a blend of 75 parts by weight bisphenol A polycarbonate 92 percent encapped with phenol, and 25 parts by weight bisphenol A polycarbonate about 100 percent endcapped with cardanol showed enhanced pit replication performance in optical disk molding trials relative to the same bisphenol A polycarbonate alone and analogous blends utilizing short chain alkylphenols.

    摘要翻译: 结合长链烷基酚端基(例如腰果酚)的聚碳酸酯组合物在模制成光盘时显示增强的凹坑复制特性。 在最短的模具循环时间测试中,成型性能的提高尤其明显。 因此,相对于单独的相同的双酚A聚碳酸酯,75重量份的双酚A聚碳酸酯92重量%与苯酚封端的共混物和25重量份约100重量%的与腰果醇封端的双酚A聚碳酸酯的共混物在光盘成型试验中显示增强的凹坑复制性能 和使用短链烷基酚的类似共混物。