| 摘要 |
A sulfurised, triglyceride additive composition for addition to oils to impart improved lubrication properties to both lubricant and fuel compositions, comprises a sulfurised, transesterified triglyceride wherein the total acid component of the triglyceride comprises no less than about 35 mole %, preferably greater than 50 mole %, saturated aliphatic acids and no more than about 65 mole % unsaturated fatty acids, said total acid component being further characterised as comprising: a) more than about 20 mole %, preferably more than 35 mole %, of mono-unsaturated acids; b) less than about 15 mole %, preferably less than 10 mole %, of poly-unsaturated fatty acids; c) more than about 20 mole % saturated aliphatic acids having 6 to 16 carbon atoms, including more than about 10 mole % saturated aliphatic acids having 6 to 14 carbon atoms; and d) less than about 15 mole % saturated aliphatic acids having 18 or more carbon atoms. |
