发明名称 |
Process for purifying dimethyl 2,6-naphthalene dicarboxylate. |
摘要 |
<p>A process for purifying crude 2,6-naphthalene dimethyl dicarboxylate (hereinunder referred to as 2,6-NDM) which comprises dissolving the crude 2,6-NDM into a C6 - C9 aromatic hydrocarbon, then contacting the solution of 2,6-NDM and the hydrocarbon with an hydrotalcite-like laminar crystalline compound and activated carbon, then carrying out thermal filtration of the solution, and then cooling the solution to separate 2,6-NDM crystal from the solution.</p> |
申请公布号 |
EP0447258(A2) |
申请公布日期 |
1991.09.18 |
申请号 |
EP19910302252 |
申请日期 |
1991.03.15 |
申请人 |
MITSUBISHI GAS CHEMICAL COMPANY, INC. |
发明人 |
TANAKA, TORU, C/O MIZUSHIMA FACTORY OF;OZAKI, ATSUSHI C/O MIZUSHIMA FACTORY OF;MATSUMOTO, MASAMI, C/O MIZUSHIMA FACTORY OF;FUJITA, HIDEAKI, C/O MIZUSHIMA FACTORY OF |
分类号 |
C07C67/56 |
主分类号 |
C07C67/56 |
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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