| 发明名称 |
USE OF A ZWITTERIONIC SURFACTANT TOGETHER WITH AN ANIONIC ETHER-CONTAINING SURFACTANT AS A DRAG-REDUCING AGENT |
| 摘要 |
<p>The present invention relates to the use of a zwitterionic surfactant in combination with an ether sulphate or ether carboxylate surfactant in a water-based system as a drag-reducing agent. The combination has besides a high drag-reducing effect also a low sensitivity to hard water.</p> |
| 申请公布号 |
EP1358297(B1) |
申请公布日期 |
2009.08.26 |
| 申请号 |
EP20020734895 |
申请日期 |
2002.01.15 |
| 申请人 |
AKZO NOBEL NV |
发明人 |
HELLSTEN, MARTIN;OSKARSSON, HANS |
| 分类号 |
C09K3/00;B01F17/00;C10M173/02;F15D1/00;F17D1/17 |
主分类号 |
C09K3/00 |
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