| 摘要 |
PURPOSE:A novel water-glycol type noncombustible hydraulic oil that contains a water-soluble polymer resulting from the reaction of a specific aliphatic amine and ethylene oxide, thus having high stability and resistance to metal wearing. CONSTITUTION:The objective noncombustible hydraulic oil contains an water- soluble polymer of 5,000-200,000 molecular weight resulting from the reaction of a 8-22C aliphatic amine having one or more active hydrogen atoms, preferably 14-21C mono- or diamine bearing 2 or 3 active hydrogen atoms with ethylene oxide. |
