发明名称 |
Purification of acrylic acid obtained by catalytic oxidation of propylene |
摘要 |
The method consists in extracting acrylic acid by countercurrent filtration washing of reaction gases by at least a hydrophobic absorbing heavy solvent, then recuperating the purified acrylic acid from the solution obtained at the end of this extracting step. As hydrophobic absorbing heavy solvent at least a hydrophobic aromatic compound is used having: a boiling point under atmospheric pressure between 260° C. and 380° C.; a crystallisation temperature less than 35° C. and a viscosity less than 10 mPa.s in a range of temperature between 30-80° C.
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申请公布号 |
US6281386(B1) |
申请公布日期 |
2001.08.28 |
申请号 |
US19990308756 |
申请日期 |
1999.05.25 |
申请人 |
ATOFINA |
发明人 |
FAUCONET MICHEL;ESCH MARC;LAURENT DENIS |
分类号 |
C07C51/48;C07C57/07;C07C57/075;(IPC1-7):C07C51/42 |
主分类号 |
C07C51/48 |
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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