发明名称 |
Method for refining acetic anhydride by distillation |
摘要 |
Disclosed is a continuous method for refining acetic anhydride produced by the reaction of ketene and acetic acid by means of a vacuum distillation system to provide a refined material comprised of at least 99.5 weight percent acetic anhydride, not more than 0.5 weight percent acetic acid and not more than about 90 parts per million (ppm) diketene.
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申请公布号 |
US5264087(A) |
申请公布日期 |
1993.11.23 |
申请号 |
US19920959956 |
申请日期 |
1992.10.13 |
申请人 |
EASTMAN KODAK COMPANY |
发明人 |
LOWERY, H. FORD;COOK, STEVEN L.;PINTO, VICKY K. |
分类号 |
C07C51/573;C07C53/12;(IPC1-7):B01D3/14 |
主分类号 |
C07C51/573 |
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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