| 摘要 |
<p>A combination of at least one betaine surfactant having a saturated or unsaturated alkyl or acyl group having 10-24 carbon atoms, preferably 14-24 carbon atoms, and an anionic surfactant having the general structure: R1-B where R1 is a hydrocarbon group with 10-24 carbon atoms and B is a group (a) or a group (b), in which M is hydrogen or a cationic, preferably monovalent group in a proportion between the betaine surfactant and the anionic surfactant of from 20:1 to 1:2, preferably from 10:1 to 1:1, reduces the flow resistance between a flowing water-based liquid system and a solid surface.</p> |
