JP2979274B

A grease composition for a high-speed rolling bearing contains an alkyl diphenyl ether oil as a base oil, and at least one of diurea compounds represented by the formula (1) wherein R denotes a divalent aromatic hydrocarbon residue having 6 to 15 carbon atoms and R and R may be the same or different...

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Bibliographic Details
Main Authors TAKAHASHI JUZO, MISHIMA MASARU, KINOSHITA HIROSHI, NAKA MICHIHARU, KOIZUMI HIDEKI
Format Patent
LanguageEnglish
Published 15.11.1999
Edition6
Subjects
CHEMISTRY
FUELS
INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATINGCOMPOSITIONS
LUBRICANTS
LUBRICATING COMPOSITIONS
METALLURGY
PEAT
PETROLEUM, GAS OR COKE INDUSTRIES
TECHNICAL GASES CONTAINING CARBON MONOXIDE
USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION
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Summary:A grease composition for a high-speed rolling bearing contains an alkyl diphenyl ether oil as a base oil, and at least one of diurea compounds represented by the formula (1) wherein R denotes a divalent aromatic hydrocarbon residue having 6 to 15 carbon atoms and R and R may be the same or different and each represent a cyclohexyl group, a cyclohexyl derivative group having 7 to 12 carbon atoms or an alkyl group having 8 to 20 carbon atoms. The diurea compound is contained as a thickener in the base oil. The content in percent of the cyclohexyl group and the cyclohexyl derivative group in the diurea compound is such that a value of [{(numbers of cyclohexyl groups and derivative groups thereof) / (numbers of cyclohexyl groups and derivative groups thereof plus numbers of alkyl groups)} x 100] is equal to 50 to 100%.
Bibliography:Application Number: JP19920171025