| 发明名称 |
METHOD FOR PURIFYING ORGANOPHOSPHONIC ACID |
| 摘要 |
PROBLEM TO BE SOLVED: To provide an organophosphonic acid of low metallic impurity contents. SOLUTION: The objective method for purifying an organophosphonic acid is characterized by comprising contacting the organophosphonic acid having in the molecule at least one phosphonic acid group or salt thereof with a strongly acidic cation exchange resin.
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| 申请公布号 |
JP2002097193(A) |
申请公布日期 |
2002.04.02 |
| 申请号 |
JP20000285427 |
申请日期 |
2000.09.20 |
| 申请人 |
MITSUBISHI GAS CHEM CO INC |
发明人 |
WATANABE HIROYA;KUWABARA HIDEKO;TANAKA KAZUNARI;NITO SHOICHI |
| 分类号 |
C07F9/38;(IPC1-7):C07F9/38 |
主分类号 |
C07F9/38 |
| 代理机构 |
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