申请人:DAICEL CHEMICAL INDUSTRIES, LTD.
公开号:EP0559953A2
公开(公告)日:1993-09-15
A process for producing a (co)polycarbonate or a (co)polyestercarbonate having a high molecular weight and excellent hue, heat stability and mechanical properties by reacting a dihydroxyl compound with a diester of carbonic acid and/or a diester of dicarbonic acid in the presence of a transesterification catalyst, wherein at least part of the reaction process is conducted in the presence of a specified organic phosphorus compound, or, in the presence of a specified organic phosphorus compound and a hindered phenol compound.
A (co)polycarbonate or (co)polyester-carbonate composition having excellent hue, heat stability and mechanical properties, comprising a (co)polycarbonate and/or a (co)polyestercarbonate and, a specified organic phosphorus compound, or, a specified organic phosphorus compound and a hindered phenol compound.
一种通过在酯交换催化剂存在下使二羟基化合物与碳酸二酯和/或二碳酸二酯反应生产具有高分子量和优异色调、热稳定性和机械性能的(共)聚碳酸酯或(共)聚酯碳酸酯的工艺,其中至少部分反应过程是在指定的有机磷化合物存在下进行的,或在指定的有机磷化合物和受阻酚化合物存在下进行的。
一种具有优异色调、热稳定性和机械性能的(共)聚碳酸酯或(共)聚酯-碳酸酯组合物,包括一种(共)聚碳酸酯和/或一种(共)聚酯碳酸酯和一种指定的有机磷化合物,或一种指定的有机磷化合物和一种受阻酚化合物。