UV-stabilized and other modified polycarbonates and method of making same
    1.
    发明授权
    UV-stabilized and other modified polycarbonates and method of making same 失效
    紫外线稳定化和其他改性聚碳酸酯及其制备方法

    公开(公告)号:US6096852A

    公开(公告)日:2000-08-01

    申请号:US76773

    申请日:1998-05-12

    摘要: UV-stabilized or other modified polycarbonates are prepared by combining polycarbonate, a radical polymerization initiator and a UV-stabilizer-molecule or other additive such as a flame retardant or IR additive containing a reactive group susceptible to radical attack in a melt. In the melt, the UV-stabilizer or other additive is graft polymerized to the polycarbonate to form a modified polycarbonate. The method can be practiced using bis-phenol-A (BPA) polycarbonates, soft-segment polycarbonates and high heat polycarbonates. The reaction may be performed in an extruder.

    摘要翻译: 通过将聚碳酸酯,自由基聚合引发剂和UV稳定剂分子或其它添加剂如阻燃剂或IR添加剂组合而成的UV稳定化或其它改性聚碳酸酯,其含有在熔体中易于发生自由基攻击的反应性基团。 在熔体中,UV稳定剂或其它添加剂被接枝聚合成聚碳酸酯以形成改性聚碳酸酯。 该方法可以使用双酚A(BPA)聚碳酸酯,软链段聚碳酸酯和高热聚碳酸酯来实施。 反应可以在挤出机中进行。