发明名称 |
REMOVAL OF MAGNETITE DEPOSITS IN WATER-SUPPLY SYSTEMS |
摘要 |
The invention concerns the use, to remove magnetite deposits in water-supply systems, of a combination of (a) at least one phosphonic acid; (b) at least one oxidizing agent; and (c) at least one short-chain organic carboxylic acid selected from the group comprising ascorbic acid, tartaric acid, formic acid, oxalic acid and citric acid; in acid aqueous solutions with a pH between 0 and 3. The total amount of (a) plus (b) is 1 to 10 % by wt., relative to the aqueous solution, and the ratio by weight of (a) to (b) is in the region of 5:1 to 1:10 while the ratio by weight of (a) plus (b) to (c) is in the region of 5:1 to 1:5. |
申请公布号 |
WO9407803(A1) |
申请公布日期 |
1994.04.14 |
申请号 |
WO1993EP02537 |
申请日期 |
1993.09.20 |
申请人 |
HENKEL KOMMANDITGESELLSCHAFT AUF AKTIEN |
发明人 |
SPRINGER, SIEGLINDE;SCHROEDER, KARL-HEINZ;WERSHOFEN, THOMAS |
分类号 |
C02F5/10;C23G1/08;(IPC1-7):C02F5/14;C23G1/02 |
主分类号 |
C02F5/10 |
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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