发明名称 |
Triphosphonic esters |
摘要 |
Triphosphonic ester, each of the three phosphorus atoms of which is bound to a carbon atom of the same hydrocarbon group, having 2 or 4 free acid functions or two salt functions, is prepared by reacting an alkaline-metal derivative of a phosphite diester with a diphosphonic acid tetra-ester, followed by hydrolysis of the compound obtained. The triphosphonic esters may be used for various known uses of phosphonates, including the extraction of heavy metals.
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申请公布号 |
US4587034(A) |
申请公布日期 |
1986.05.06 |
申请号 |
US19830540841 |
申请日期 |
1983.10.11 |
申请人 |
SOCIETE NATIONALE ELF AQUITAINE (PRODUCTION) |
发明人 |
STURTZ, GEORGES;PENSEC, THIERRY;GAUTIER, JEAN-CLAUDE |
分类号 |
C07F9/40;C22B3/38;C22B60/02;(IPC1-7):C09K3/00 |
主分类号 |
C07F9/40 |
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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