Stabilized thermoplastic composition, method of making, and articles formed therefrom
    4.
    发明授权
    Stabilized thermoplastic composition, method of making, and articles formed therefrom 有权
    稳定的热塑性组合物,制造方法和由其形成的制品

    公开(公告)号:US07511092B2

    公开(公告)日:2009-03-31

    申请号:US11246651

    申请日:2005-10-07

    IPC分类号: C08K5/10

    CPC分类号: C08K5/109 C08L69/00

    摘要: A thermoplastic composition comprises a polycarbonate, an ionizing radiation stabilizing additive, and a poly-substituted aromatic compound of formula: wherein X is an aryl group; Y is a non-hydrogen substituent group, a is 1 to 4, b is 0 to 4, a+b is less than or equal to 4, and c is 0 or 1; and wherein the amounts and identities of the polycarbonate, ionizing radiation stabilizing additive, and poly-substituted aromatic compound are selected such that a molded article having a thickness of 3.18 millimeters and comprising the thermoplastic composition has, after exposure to gamma radiation at 83 kGy and when measured according to ASTM D1925-70, an increase in yellowness index (dYI) of less than or equal to 50, when compared to the unexposed thermoplastic composition.

    摘要翻译: 热塑性组合物包含聚碳酸酯,电离辐射稳定添加剂和下式的多取代芳族化合物:其中X是芳基; Y是非氢取代基,a是1至4,b是0至4,a + b小于或等于4,c是0或1; 并且其中选择聚碳酸酯,电离辐射稳定添加剂和多取代芳族化合物的量和身份,使得具有3.18毫米厚度且包含该热塑性组合物的模塑制品在暴露于83kGy的γ辐射之后,以及 当根据ASTM D1925-70测量时,与未曝光的热塑性组合物相比,黄度指数(dYI)的增加小于或等于50。