A process for the manufacture of methyl methacrylate includes a process for separating the methyl methacrylate from certain impurities, at least one of which has a freezing point of greater than -50 DEG C, by a fractional crystallisation process.
申请公布号
WO9902481(A1)
申请公布日期
1999.01.21
申请号
WO1998GB02028
申请日期
1998.07.10
申请人
IMPERIAL CHEMICAL INDUSTRIES PLC;STUART, JOSEPH, YOUNGBLOOD;MARTIN, JOHN, STUART;PARTEN, DAVID, WILLIAM;HARRISON, STEPHEN, PATRICK
发明人
STUART, JOSEPH, YOUNGBLOOD;MARTIN, JOHN, STUART;PARTEN, DAVID, WILLIAM;HARRISON, STEPHEN, PATRICK