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    • 5. 发明申请
    • LUBRICATING OIL OR LUBRICATING OIL COMPOSITION AND FUEL OIL COMPOSITION
    • 润滑油或润滑油组合物和燃油组合物
    • WO98033872A1
    • 1998-08-06
    • PCT/JP1998/000212
    • 1998-01-21
    • C08L23/08C08L91/00C10L1/16C10L10/04C10M107/12C10M143/10
    • C10L10/08C08L23/0815C08L91/00C10L1/165C10M107/02C10M107/12C10M143/00C10M143/10C10M2205/00C10M2205/02C10M2205/0206C10M2205/04C10M2205/043C08L2666/02
    • A lubricating oil comprising a random copolymer of an alpha -olefin/aromatic vinyl compound, wherein the copolymer has a viscosity falling within a specific range and comprises ethylene, an aromatic vinyl compound, and optionally an alpha -olefin. The lubricating oil possesses excellent viscosity properties, thermal stability, oxidation stability, abrasion resistance, and compatibility with lubricating oil additives. The random copolymer having a different viscosity range is useful as a viscosity index improver and a compatibilizing agent for a lubricating oil. The invention also provides a lubricating oil composition comprising a base oil and the viscosity index improver or the compatibilizing agent. The invention further provides a fuel oil composition comprising a fuel oil fluidity improver based on the above random copolymer having a different viscosity range and a middle fraction fuel oil having a boiling point of 150 to 400 DEG C. The fuel oil composition prevents an increase in viscosity of the middle fraction fuel oil, lowers the clogging point and the flow point in a low-temperature filter, and inhibits the abrasion of a fuel jet nozzle.
    • 一种润滑油,其包含α-烯烃/芳族乙烯基化合物的无规共聚物,其中所述共聚物的粘度落在特定范围内并且包含乙烯,芳族乙烯基化合物和任选的α-烯烃。 润滑油具有优异的粘度性能,热稳定性,氧化稳定性,耐磨性和与润滑油添加剂的相容性。 具有不同粘度范围的无规共聚物可用作粘度指数改进剂和润滑油相容剂。 本发明还提供一种包含基础油和粘度指数改进剂或相容剂的润滑油组合物。 本发明还提供一种燃料油组合物,其包含基于上述具有不同粘度范围的无规共聚物的燃料油流动性改进剂和沸点为150-400℃的中间馏分燃料油。燃料油组合物防止了 中间馏分燃料油的粘度降低低温过滤器中的堵塞点和流动点,并且抑制燃料喷嘴的磨损。