Grease composition and bearing
AssigneeKyodo Yushi Co., Ltd.
InventorsMasamichi Yamamoto, Yutaka Imai, Jun-ichi Imai
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Abstract
The invention provides a grease composition containing a thickener, a base oil and an antistatic agent, where the antistatic agent includes at least one selected from the group consisting of Li(CF3SO2)2N and Li(CF3SO2)3C; and a mechanical part where the above-mentioned grease composition is packed. The composition of the invention shows satisfactory results in the antistatic properties and the acoustic property.
Claims8
A grease composition comprising a thickener, a base oil and an antistatic agent, wherein the antistatic agent comprises at least one selected from the group consisting of Li(CF3SO2)2N and Li(CF3SO2)3C,
- wherein the thickener is a urea compound selected from the group consisting of a diurea compound prepared by reacting p-toluidine with tolylene diisocyanate and a diurea compound prepared by cyclohexylamine and stearylamine with diphenylmethane diisocyanate, and
- the base oil is selected from the group consisting of an alkyldiphenyl ether oil, a dipentaerythritol ester oil, a pentaerythritol ester oil and combination thereof, wherein the grease composition has a volume resistivity of less than 50.0×107 Ωm.
Dependencies are inferred from the claim text.