Grease composition
AssigneeNok Kluber Co., Ltd.
InventorsTetsuhiro Miyamoto, Akihiko Shimura, Tetsuhiro Kitahara, Jiro Yurimoto
Life of this patent
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Abstract
A grease composition, which comprises (A) a perfluoropolyether base oil, (B) a thickener, and (C) barium sulfate and/or antimony oxide, where 0.1-50% by weight of the component (B) and 1-25% by weight of the component (C) are contained, has a distinguished effect on improvements of abrasion resistance, friction characteristics, load durability, high-temperature durability and corrosion resistance without any deterioration of heat resistance by adding at least one of barium sulfate and antimony oxide, each having an average primary particle size of 0.1-20 μm, as component (C).
Claims4
A grease composition, which consists essentially of (A) a perfluoropo lyether base oil, (B) a thickener, and (C) at least one of barium sulfate and antimony oxide.
Dependencies are inferred from the claim text.