| 摘要 |
<p>For use as surfactants in oil water systems, e.g hydraulic fluids, compounds are described which contain in the molecule a hydrophobic component and a hydrophilic component covalently bonded together, where the hydrophobic component is a saturated or unsaturated C30-500 hydrocarbon chain and the hydrophilic component contains an anionic grouping selected from phosphate, phosphonate, sulphate, sulphonate and carboxymethyl.</p> |
