Lubricant oil composition
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United States of America Patent
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Jun 12, 2001
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N/A
app pub date -
Aug 6, 1999
filing date -
Sep 3, 1998
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Abstract
The present invention is a lubricant oil composition comprising a base oil as the major component which contains aromatic compounds at 1 wt % or less and paraffin and monocyclic naphthene compounds at 50 wt % or more as total content, and has a kinematic viscosity of 2 to 50 mm.sup.2 /s at 100.degree. C. and evaporated quantity of 16 wt % or less by the NOACK volatility test.
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