发明名称 |
A process for purifying methyl methacrylate. |
摘要 |
<p>A process for purifying methyl methacrylate which comprises treating methyl methacrylate having a purity of 99.5% or more containing a trace of impurities with a sulfonic acid group-containing compound. According to the present invention, there can be obtained highly purified methyl methacrylate which exhibits an absorbance of 0.02 or less in a range of wavelength of 400 - 500 nm according to the sulfuric acid color method and is free of even a trace of furan-type compounds.</p> |
申请公布号 |
EP0343583(B1) |
申请公布日期 |
1994.12.14 |
申请号 |
EP19890109230 |
申请日期 |
1989.05.23 |
申请人 |
MITSUBISHI RAYON CO., LTD. |
发明人 |
YOSHIOKA, TERUHIKO;OKAMURA, KOUHEI;KOBAYASHI, MASAO |
分类号 |
B01J27/02;B01J31/10;C07C67/56;C07C67/58;C07C69/54;(IPC1-7):C07C69/54;C07C67/60;C07C67/54 |
主分类号 |
B01J27/02 |
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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