发明申请
- 专利标题： PROCESS FOR PRODUCTION OF ISOPHTHALIC ACID
- 专利标题（中）： 生产异黄酸的方法
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申请号： US13048537申请日： 2011-03-15
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公开(公告)号： US20110213180A1公开(公告)日： 2011-09-01
- 发明人: Fumiya ZAIMA , Nobuo Namiki , Hideaki Fujita , Masato Inari
- 申请人： Fumiya ZAIMA , Nobuo Namiki , Hideaki Fujita , Masato Inari
- 申请人地址： JP Chiyoda-ku
- 专利权人： Mitsubishi Gas Chemical Company, Inc.
- 当前专利权人： Mitsubishi Gas Chemical Company, Inc.
- 当前专利权人地址： JP Chiyoda-ku
- 优先权： JP2006-342765 20061220
- 主分类号： C07C51/255
- IPC分类号： C07C51/255
摘要：
A method for producing isophthalic acid, comprising: subjecting a m-phenylene compound and a molecular-oxygen-containing gas to liquid-phase oxidation reaction in the presence of a catalyst comprising a heavy metal compound and a bromine compound, and hydrous acetic acid having a water content of 1 to 15 mass %, to thereby yield a slurry; regulating the temperature of the slurry to 35 to 140° C., to thereby precipitate isophthalic acid; removing the isophthalic acid through solid-liquid separation, to thereby recover a mother liquor; and recovering the catalyst from the mother liquor by following steps (1) to (4) as described.
公开/授权文献
- US08242304B2 Process for production of isophthalic acid 公开/授权日：2012-08-14
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