LUBRICATING OIL COMPOSITION
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United States of America Patent
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Issued Date -
Jan 14, 2010
app pub date -
Jan 23, 2008
filing date -
Jan 23, 2007
priority date (Note) -
Abandoned
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Abstract
The present invention aims to provide a lubricating oil composition capable of use in for example the bearings of a high-speed main shaft having ceramics ball antifrication bearings operating under severe conditions of high speed and high load.To this end the present invention provides a lubricating oil composition, in particular for lubrication of ceramics, comprising a base oil; and at least one additive selected from the group consisting of: (i) an acid amide obtainable by reacting an amine with a saturated monocarboxylic acid having from 12 to 30 carbons or an unsaturated monocarboxylic acid having from 18 to 24 carbons; (ii) sarcosinic acid; and (iii) an aspartic acid derivative.
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