发明名称 |
A PROCESS FOR SEPARATION OF THE DIPOTASSIUM SALT OF NAPHTHALENE DICARBOXYLIC ACID USING ACTIVATED CARBON BEDS |
摘要 |
In a process for producing aromatic dicarboxylic acids which incorporates th e disproportionation of a salt of an aromatic mono- or dicarboxylic acid to produce the unreacted salt of an aromatic mono- or dicarboxylic acid and the salt of the desired aromatic dicarboxylic acid, a method is disclosed for separating the salt of the desired product from the unreacted salt which comprises passing both said unreacted salt and said salt of the desired product in an aqueous solution over an adsorbent comprising an activated carbon. The process is particularly suitable for separating potassium naphthoate from 2,6-K2NDA after potassium naphthoate is disproportionated to produce 2,6-K2NDA and 1- or 2- potassium naphthoate. The adsorbent can be regenerated by the use of a displacing agent and reused without off site regeneration.
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申请公布号 |
CA2383507(A1) |
申请公布日期 |
2001.03.08 |
申请号 |
CA20002383507 |
申请日期 |
2000.08.08 |
申请人 |
MOSSI & GHISOLFI OVERSEAS S.A. |
发明人 |
JUNE, RAYMOND L. |
分类号 |
B01J27/232;C07C51/02;C07C51/15;C07C51/265;C07C51/41;C07C51/42;C07C51/43;C07C51/47;C07C51/487;C07C63/38;C08G63/189;(IPC1-7):C07C51/41;C07C63/14;C07C63/337 |
主分类号 |
B01J27/232 |
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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