发明名称 |
THERMAL ENHANCEMENT OF THE PURIFICATION PROCESS FOR INTERFACIAL POLYCARBONATE AND COPOLYMER POLYCARBONATES |
摘要 |
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. |
申请公布号 |
WO2015013641(A1) |
申请公布日期 |
2015.01.29 |
申请号 |
WO2014US48239 |
申请日期 |
2014.07.25 |
申请人 |
SABIC INNOVATIVE PLASTICS IP B.V.;HOLLAR JR., WILLIAM E. |
发明人 |
HOLLAR JR., WILLIAM E.;KUZELJEVIC, ZELJKO;KHADILKAR, MOHAN;PACIORKOWSKI, DONALD |
分类号 |
C08G64/40 |
主分类号 |
C08G64/40 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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