Invention Grant
US07987866B2 Zwitterionic surfacant together with an anionic ether-containing surfactant as a drag-reducing agent
失效
两性离子表面活性剂与阴离子醚类表面活性剂一起作为减阻剂
- Patent Title: Zwitterionic surfacant together with an anionic ether-containing surfactant as a drag-reducing agent
- Patent Title (中): 两性离子表面活性剂与阴离子醚类表面活性剂一起作为减阻剂
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Application No.: US10470033Application Date: 2002-01-15
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Publication No.: US07987866B2Publication Date: 2011-08-02
- Inventor: Martin Hellsten , Hans Oskarsson
- Applicant: Martin Hellsten , Hans Oskarsson
- Applicant Address: NL Arnhem
- Assignee: Akzo Nobel N.V.
- Current Assignee: Akzo Nobel N.V.
- Current Assignee Address: NL Arnhem
- Agent Ralph J. Mancini
- Priority: SE0100176 20010123
- International Application: PCT/SE02/00059 WO 20020115
- International Announcement: WO02/059229 WO 20020801
- Main IPC: F17D1/16
- IPC: F17D1/16 ; B01D17/00 ; B01F17/18 ; C09K5/00 ; C11D1/10
Abstract:
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.
Public/Granted literature
- US20040077734A1 Zwitterionic surfacant together with an anionic either-containing surfactant as a drag-reducing agent Public/Granted day:2004-04-22
Information query
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