LUBRICATING OIL FOR FLUID BEARING, AND FLUID BEARING AND METHOD FOR LUBRICATING FLUID BEARING BY USING THE LUBRICATING OIL
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United States of America Patent
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Issued Date -
Dec 24, 2009
app pub date -
Aug 31, 2007
filing date -
Sep 5, 2006
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Abandoned
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Abstract
Disclosed is a lubricating oil for a fluid bearing, which has a low viscosity, a reduced amount of evaporation, and superior low-temperature flowability. The lubricating oil includes, as a base oil, a high-purity diester synthesized from a carboxylic acid material containing 90 mass % or more of azelaic acid and an alcohol material containing 90 mass % or more of 2-ethyl-1-hexanol. The carboxylic acid material contains glutaric acid, adipic acid, pimelic acid, suberic acid, sebacic acid and 1,9-nanomethylenedicarboxylic acid in a total amount of 5 mass % or less.
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