Abstract: The synthesis of polycarbonate (PC) by melt transesterification from diphenol carbonate (DPC) with 4,4’-dihydroxy-diphenyl-2,2-propane (BPA) using tetraethyl ammonium hydroxide (TEAH) as catalyst was experimentally studied. The properties of the resulting polymer was influenced markedly by the operating conditions including the concentration of catalyst，the ratio of DPC/BPA and reaction times in different processing stages. Compared with NaOH，using TEAH as catalyst under the optimized process conditions，an almost colorless PC was obtained with relatively higher molecular weight，narrower molecular weight distribution and less branching and rearranging side-products.

摘要： 研究了以碳酸二苯酯（DPC）和双酚A（BPA）为原料，氢氧化四乙基铵（TEAH）为催化剂，熔融酯交换合成聚碳酸酯的工艺。其催化剂用量、原料配比、反应时间等工艺条件对产物分子量等参数有较大的影响。与以氢氧化钠作催化剂相比，在所得的较优条件下以TEAH为催化剂，可得到分子量较高、分子量分散指数低、熔体流动性好、支化重排产物少、基本无色的聚碳酸酯树脂。