公开(公告)号：US06531623B2

公开(公告)日：2003-03-11

申请号：US10028602

申请日：2001-12-19

申请人： Andreas Chrisochoou ,  Steffen Kühling ,  Johan Vanden Eynde

发明人： Andreas Chrisochoou ,  Steffen Kühling ,  Johan Vanden Eynde

IPC分类号： C07C6996

CPC分类号： C07C68/02 ,  C07C69/96

摘要： A two stage interfacial polycondensation process for the production of carbonic acid diaryl ester is disclosed. The invention concerns an improvement to the process that entails forming in a first stage a reaction mixture that contains an inert solvent, at least one monophenol, phosgene, and aqueous alkali hydroxide solution, passing said reaction mixture to a second stage through at least one constriction at a velocity of 3 to 15 m/s under conditions designed to expose the mixture to a pressure drop of 0.1 to 2.5 bar, and in said second stage passing said mixture through at least one dispersing element at a velocity of 2 to 10 m/s under conditions designed to expose the mixture to a pressure drop of 0.1 to 0.5 bar. The resulting product is characterized by its purity and suitability for the manufacture of polycarbonates in the melt transesterification process.

摘要翻译： 公开了用于生产碳酸二芳基酯的两阶段界面缩聚方法。 本发明涉及改进在第一阶段形成含有惰性溶剂，至少一种单酚，光气和碱金属氢氧化物水溶液的反应混合物的方法，使反应混合物通过至少一个缩颈 在设计为将混合物暴露于0.1至2.5巴的压降的条件下以3至15m / s的速度，并且在所述第二阶段中通过所述混合物通过至少一种分散元件，速度为2至10m / 在设计为将混合物暴露于0.1至0.5巴的压降的条件下。 所得产物的特征在于其在熔融酯交换过程中用于制造聚碳酸酯的纯度和适用性。

公开(公告)号：US06420465B1

公开(公告)日：2002-07-16

申请号：US09729021

申请日：2000-12-04

申请人： Nikolaus Janke ,  Reinhard Pech ,  Andreas Chrisochoou ,  Dieter Heinz ,  Werner Bäcker ,  Kaspar Hallenberger

发明人： Nikolaus Janke ,  Reinhard Pech ,  Andreas Chrisochoou ,  Dieter Heinz ,  Werner Bäcker ,  Kaspar Hallenberger

IPC分类号： C08K552

CPC分类号： C07F9/1406 ,  C07F9/12

摘要： The present invention relates to a process for preparing phosphoric acid esters, in particular monomeric bisaryl diphosphates, or bridged phosphates.

摘要翻译： 本发明涉及一种制备磷酸酯，特别是单体二芳基二磷酸酯或桥连磷酸酯的方法。