Patent Number: 6,251,841

Title: Grease composition

Abstract: The present invention provides a grease composition excellent in both rust-proofing properties and safety. The grease composition comprises a lubricating base oil and a thickener, and further comprises a lipophilic organic inhibitor, a nonionic surface active agent and a hydrophilic organic inhibitor selected from the group consisting of lanolin fatty acid derivative and alkanolamine derivative modified with a hydrophilic group each in an amount of from 0.1 to 10% by weight based on the total weight of said grease composition.

Inventors: Koizumi; Hideki (Kanagawa, JP), Yokouchi; Atsushi (Kanagawa, JP), Iso; Kenichi (Kanagawa, JP), Naka; Michiharu (Kanagawa, JP), Endo; Toshiaki (Kanagawa, JP), Shibayama; Atsushi (Kanagawa, JP)

Assignee: NSK Ltd.

International Classification: C10M 141/08 (20060101); C10M 169/00 (20060101); C10M 141/00 (20060101); C10M 135/10 ()

Expiration Date: 06/26/2018