专利名称：USE OF A ZWITTERIONIC SURFACTANT
TOGETHER WITH AN ANIONIC ETHER-CONTAINING SURFACTANT AS A DRAG-REDUCING AGENT
发明人：HELLSTEN, Martin,OSKARSSON, Hans申请号：EP02734895.2申请日：20020115公开号：EP1358297B1公开日：20090826
摘要：The present invention relates to the use of a zwitterionic surfactant incombination with an ether sulphate or ether carboxylate surfactant in a water-basedsystem as a drag-reducing agent. The combination has besides a high drag-reducingeffect also a low sensitivity to hard water.
申请人：AKZO NOBEL NV
地址：NL
国籍：NL
代理机构：Alferink, Petrus J.T.
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