发明授权
US5495038A Process for the purification of diphenyl carbonate 失效
纯化碳酸二苯酯的方法

Process for the purification of diphenyl carbonate
摘要:
This invention provides a process for the purification of diphenyl carbonate (DPC) from crude products of diphenyl carbonate production. In this process, crude products are used that have a distillable fraction consisting of over 70 wt. % diphenyl carbonate and are fractionally crystallised from the melt (fractionating melt crystallisation).
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