发明名称 |
CHEMICAL PROCESS |
摘要 |
<p>CHEMICAL PROCESS A process for extracting metal values especially zinc values from aqueous solutions of metal salts which comprises contacting the aqueous solution with an organic phase comprising a compound of the formula: I wherein each of R1, R2, R3 and R4, independently, represents an optionally substituted hydrocarbyl or hydrocarbyloxy group or R1 and R2 together with the attached phosphorus atom and/or R3 and R4 together with the attached phosphorus atom form a 5- to 8-membered heterocyclic ring.</p> |
申请公布号 |
CA2097158(A1) |
申请公布日期 |
1993.12.06 |
申请号 |
CA19932097158 |
申请日期 |
1993.05.27 |
申请人 |
CAMPBELL, JOHN;DALTON, RAYMOND F.;QUAN, PETER M. |
发明人 |
CAMPBELL, JOHN;DALTON, RAYMOND F.;QUAN, PETER M. |
分类号 |
B01D11/00;C07F9/24;C07F9/28;C07F9/36;C07F9/44;C07F9/6568;C22B3/26;C22B3/28;C22B3/38;C22B19/00;C22B19/20;(IPC1-7):C07F9/36;C22B3/16;C07F9/547 |
主分类号 |
B01D11/00 |
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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