申请人:SABIC Innovative Plastics IP B.V.
公开号:EP2816068A1
公开(公告)日:2014-12-24
A continuous process for the manufacture of a polycarbonate comprises: combining an aromatic dihydroxy compound stream and a diaryl carbonate stream to form a mixture; controlling a weight or molar ratio of the diaryl carbonate to the aromatic dihydroxy compound by: measuring a sound velocity, Vs, in the mixture at an operating temperature of the controlling step; and determining the weight or molar ratio of the diaryl carbonate to the aromatic dihydroxy compound in the mixture; and adjusting a flow rate of at least one of the aromatic dihydroxy compound stream and the diaryl carbonate stream, if needed, to achieve a desired weight or molar ratio of the diaryl carbonate to the aromatic dihydroxy compound; and polymerizing the aromatic dihydroxy compound and the diaryl carbonate in the presence of a catalyst to produce the polycarbonate.
一种制造聚碳酸酯的连续工艺包括:将芳香族二羟基化合物流和碳酸二芳基酯流混合形成混合物;通过以下方法控制碳酸二芳基酯与芳香族二羟基化合物的重量或摩尔比:在控制步骤的工作温度下测量混合物中的声速 Vs;以及确定混合物中碳酸二芳基酯与芳香族二羟基化合物的重量或摩尔比:在控制步骤的工作温度下,测量混合物中的声速 Vs;以及 确定混合物中碳酸二芳基酯与芳香族二羟基化合物的重量或摩尔比;必要时调节芳香族二羟基化合物流和碳酸二芳基酯流中至少一种流的流速,以达到所需的碳酸二芳基酯与芳香族二羟基化合物的重量或摩尔比;以及在催化剂存在下聚合芳香族二羟基化合物和碳酸二芳基酯,以生产聚碳酸酯。