The present invention relates to thermoplastic high-Tg polycarbonates and moulding materials which are distinguished by improved thermal properties and improved mechanical properties, in particular by reduced thermal expansion. The present invention furthermore relates to a process for the preparation of these polycarbonates. In particular, this invention relates to polycarbonates which the structural unit which derives from phthalimide of the formula (I) and polycarbonate compositions and moulding materials therefrom as well as a process for the preparation of these polycarbonates, and the use thereof, in particular as reflectors and display substrates.
本发明涉及热塑性高Tg聚
碳酸酯及模塑材料,其具有改善的热性能和机械性能,特别是具有减少热膨胀的特点。本发明还涉及一种制备这些聚
碳酸酯的方法。特别地,本发明涉及从邻苯二甲
酰亚胺的结构单元(I)衍生的聚
碳酸酯、聚
碳酸酯组合物和模塑材料以及制备这些聚
碳酸酯的方法,以及它们的用途,特别是作为反射器和显示基板。