A branched polycarbonate comprising: high heat aromatic carbonate units derived from a high heat aromatic dihydroxy monomer units; optionally, low heat carbonate units derived from low heat monomer units; and 0.05-1.5 mole percent, preferably 0.05-1.0 mole percent, of a branching agent based on the total number of moles in the branched polycarbonate; wherein the branched polycarbonate has a tensile stress at break of 10-70 megaPascals measured according to ISO 527, and a glass transition temperature of 170-260°C measured by differential scanning calorimetry according to ASTM D3418 with a 20°C/min heating rate.
一种支化聚
碳酸酯,包括:由高热芳香族二羟基单体单元衍生的高热芳香族
碳酸酯单元;可选的,由低热单体单元衍生的低热
碳酸酯单元;以及 0.05-1.5 摩尔%,优选 0.05-1. 其中支化聚
碳酸酯的断裂拉伸应力根据 ISO 527 测量为 10-70 兆帕斯卡,
玻璃化转变温度根据 ASTM D3418 以 20°C/min 升温速率进行差示扫描量热法测量为 170-260°C。