公开(公告)号：US09617380B2

公开(公告)日：2017-04-11

申请号：US14907369

申请日：2014-07-25

Applicant: SABIC Global Technologies B.V.

Inventor： William E. Hollar, Jr. ,  Zeljko Kuzeljevic ,  Mohan Khadilkar ,  Donald Paciorkowski

IPC: C08G64/00 ,  C08G64/40 ,  C08G63/06

CPC classification number: C08G64/403 ,  C08G64/406

Abstract: In an embodiment, a process of purifying a polycarbonate comprises: polymerizing a dihydroxy compound and a carbonate source via an interfacial reaction in the presence of a catalyst to form a product mixture comprising an aqueous phase and an organic phase, wherein the organic phase comprises the polycarbonate, the catalyst, ions, and a solvent having a boiling point Tb; heating the product mixture to greater than or equal to Tb; separating the aqueous phase and the organic phase at a temperature greater than or equal to Tb to form a separated organic phase and a separated aqueous phase; extracting the catalyst from the separated organic phase; and extracting the ions from the separated organic phase; wherein if a centrifuge is used in the extracting of the catalyst, the extracting of the ions, or both, the process further comprises cooling a stream entering the centrifuge to less than Tb.

公开(公告)号：US20160177029A1

公开(公告)日：2016-06-23

申请号：US14907369

申请日：2014-07-25

Applicant: SABIC Global Technologies B.V.

Inventor： William E. Hollar, JR. ,  Zeljko Kuzeljevic ,  Mohan Khadilkar ,  Donald Paciorkowski

IPC: C08G64/40

CPC classification number: C08G64/403 ,  C08G64/406

Abstract: In an embodiment, a process of purifying a polycarbonate comprises: polymerizing a dihydroxy compound and a carbonate source via an interfacial reaction in the presence of a catalyst to form a product mixture comprising an aqueous phase and an organic phase, wherein the organic phase comprises the polycarbonate, the catalyst, ions, and a solvent having a boiling point Tb; heating the product mixture to greater than or equal to Tb; separating the aqueous phase and the organic phase at a temperature greater than or equal to Tb to form a separated organic phase and a separated aqueous phase; extracting the catalyst from the separated organic phase; and extracting the ions from the separated organic phase; wherein if a centrifuge is used in the extracting of the catalyst, the extracting of the ions, or both, the process further comprises cooling a stream entering the centrifuge to less than Tb.

Abstract translation: 在一个实施方案中，纯化聚碳酸酯的方法包括：在催化剂存在下通过界面反应聚合二羟基化合物和碳酸酯源，以形成包含水相和有机相的产物混合物，其中有机相包含 聚碳酸酯，催化剂，离子和沸点为Tb的溶剂; 将产物混合物加热至大于或等于Tb; 在大于或等于Tb的温度下分离水相和有机相以形成分离的有机相和分离的水相; 从分离的有机相中提取催化剂; 并从分离的有机相中提取离子; 其中如果在提取催化剂中使用离心机，则提取离子或两者，该方法还包括将进入离心机的流冷却至小于Tb。