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公开(公告)号:US20070015938A1
公开(公告)日:2007-01-18
申请号:US11521969
申请日:2006-09-15
IPC分类号: C07C51/42
CPC分类号: C07C51/44 , B01D3/146 , C07C51/50 , Y10S203/09 , Y10S203/20 , Y10S203/22 , C07C57/04
摘要: A process is provided herein for the high yield production of high purity glacial methacrylic acid (“HPMAA”) that is substantially pure, specifically 99% pure or greater with a water content of 0.05% or less. This improved process comprises providing a crude MAA stream and purifying the crude methacrylic acid stream in a series of successive distillation steps
摘要翻译: 本文提供了一种高产量生产高纯度冰甲基丙烯酸(“HPMAA”)的方法,其基本上纯,特别是99%纯或更高,水含量为0.05%或更低。 该改进的方法包括提供粗MAA流并在一系列连续蒸馏步骤中纯化粗甲基丙烯酸流