Patent ID: 8258088
Filing Date: 2012-09-04
Classification: C10M,C10N

Abstract:
1. A lubricating grease composition consisting of a mixture of (a) 5 to 95 wt % base oil based on oils with a standard viscosity for industrial lubricants, consisting of an ester of an aromatic or aliphatic di-, tri- or tetracarboxylic acid with one or a mixture of C (b) 1 to 10 wt % ionic liquid or a mixture of ionic liquids selected from the group consisting of butylmethylpyrrolidinium bis(trifluoromethylsulfonyl)imide, trihexyl(tetradecyl)phosphonium bis(trifluoromethylsulfonyl)imide, 1-ethyl-3-methylimidazolium ethyl sulfate, 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide and N-ethyl-3-methylpyridinium nonafluorobutanesulfonate, (c) 3 to 50 wt % thickening agent selected from the group consisting of a reaction product of a diisocyanate selected from the group consisting of 2,4-diisocyanatotoluene, 2,6-diisocyanatotoluene, and 4,4′-diisocyanatodiphenylmethane, which may be used individually or in combination, with an amine of the general formula R′ and (d) 0.1 to 10 wt % conventional additives individually or in combination, selected from the group consisting of corrosion preventives, oxidation preventives, wear preventives, friction reducing agents, agents to protect against metal effects, UV stabilizers, organic or inorganic solid lubricants selected from polyimide, polytetrafluoroethylene (PTFE), graphite, metal oxides, boron nitride, molybdenum sulfide and phosphate.