Process for purification of diphenyl carbonate for the manufacturing of high quality polycarbonate

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专利权人:

SABIC GLOBAL TECHNOLOGIES B.V.

发明人:

Fernandez Ignacio Vic,Lyakhovych Mykhaylo,Nadal Sergio Ferrer

申请号：

US201414206692

公开号：

US9732028(B2)

申请日:

2014.03.12

申请国别(地区):

美国

年份:

2017

代理人:

Cantor Colburn LLP

摘要：

A process for purifying a diaryl carbonate, comprises introducing an aqueous stream to a diaryl carbonate stream that comprises a metal contaminant, wherein the aqueous stream reacts with the metal contaminant to form a precipitate; wherein introducing the aqueous stream to the diaryl carbonate stream results in introducing 100 to 10,000 ppm water based on the total composition of the diaryl carbonate stream and the aqueous stream; removing the precipitate via one or both of a separation column and a filter to result in a purified diaryl carbonate.

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