| 发明名称 |
Zwitterionic surfacant together with an anionic ether-containing surfactant as a drag-reducing agent |
| 摘要 |
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.
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| 申请公布号 |
US7987866(B2) |
申请公布日期 |
2011.08.02 |
| 申请号 |
US20030470033 |
申请日期 |
2003.07.23 |
| 申请人 |
AKZO NOBEL N.V. |
发明人 |
HELLSTEN MARTIN;OSKARSSON HANS |
| 分类号 |
C09K3/00;F17D1/16;B01D17/00;B01F17/00;B01F17/18;C09K5/00;C10M173/02;C11D1/10;F17D1/17 |
主分类号 |
C09K3/00 |
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