| 发明名称 |
FREMGANGSMAATE OG PREPARAT FOR AA OPPLOESE BARIUMSULFATAVSETNINGER I EN BROENN SOM GJENNOMTRENGER EN UNDERJORDISK FORMASJON |
| 摘要 |
<p>Barium sulfate scale is dissolved by contacting it with an aqueous solution of: a bicyclic macrocyclic polyether in which the intramolecular cavity or cript is preferentially receptive to the cations of alkaline earth metals, at least a catalytically effective proportion of an alkali metal salt of an organic acid, and enough dissolved alkaline inorganic alkali metal or ammonium compound to provide a solution pH of at least about 8.</p> |
| 申请公布号 |
NO149361(B) |
申请公布日期 |
1983.12.27 |
| 申请号 |
NO19790001283 |
申请日期 |
1979.04.18 |
| 申请人 |
SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V., |
发明人 |
JONG, FEIKE DE,;REINHOUDT, DAVID NICOLAAS,;TORNY-SCHUTTE, GERRIDINA JOHANNA, |
| 分类号 |
C09K8/528;C09K8/78;(IPC1-7):21B43/28 |
主分类号 |
C09K8/528 |
| 代理机构 |
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