公开(公告)号：US09410015B2

公开(公告)日：2016-08-09

申请号：US14409592

申请日：2013-06-13

申请人： EPC ENGINEERING CONSULTING GMBH

发明人： Michael Streng

IPC分类号： C08G64/00 ,  C08G64/30 ,  B01J19/18 ,  C08G64/20 ,  B01J19/24 ,  C08G63/02

CPC分类号： C08G64/307 ,  B01J19/18 ,  B01J19/245 ,  B01J2219/00083 ,  B01J2219/00094 ,  B01J2219/24 ,  C08G64/205

摘要： The invention relates to a method for producing a polycarbonate comprising at least the following steps: a) transesterification of one or more bisphenols with one or more diaryl carbonates in at least one transesterification reactor under continuous removal of the hydroxy aryl reaction product released, b) pre-polycondensation of the reaction product of the transesterification in at least one pre-polycondensation reactor under continuous removal of the hydroxy aryl reaction product released, c) polycondensation of the reaction product of the pre-polycondensation in at least one polycondensation reactor, wherein the aryl reaction product is removed during the transesterification reaction and the hydroxy aryl reaction product is removed during the pre-polycondensation reaction through a common column, wherein entrained diaryl carbonate is separated from the hydroxy aryl reaction product drawn off.

摘要翻译： 本发明涉及一种制备聚碳酸酯的方法，其包括至少以下步骤：a）在连续去除释放的羟基芳基反应产物的同时，在至少一个酯交换反应器中将一种或多种双酚与一种或多种碳酸二芳基酯酯交换，b） 在连续去除释放的羟基芳基反应产物的情况下，在至少一种预缩聚反应器中的酯交换反应产物的预缩聚，c）在至少一个缩聚反应器中预缩聚的反应产物的缩聚，其中 在酯交换反应期间除去芳基反应产物，并通过普通柱在预缩聚反应期间除去羟基芳基反应产物，其中从引出的羟基芳基反应产物中分离夹带的碳酸二芳基酯。