LUBRICATING BASE OIL BLEND
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United States of America Patent
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Issued Date -
Dec 1, 2011
app pub date -
Aug 12, 2008
filing date -
Aug 13, 2007
priority date (Note) -
Abandoned
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Abstract
The present invention relates to a lubricating base oil blend comprising (a) a mineral oil derived base oil having a saturates content of more than 90 wt %, a sulphur content of less than 0.03 wt % and a viscosity index of between 80-150, and (b) a paraffinic base oil component having a viscosity at 1000 C of from 7 to 30 cSt (7 to 30 mm2/s), wherein component (b) is an isomerised Fischer-Tropsch derived bottoms product having a ratio of percentage of recurring methylene carbons which are four or more carbons removed from an end group and a branch to the percentage of isopropyl carbon atoms, as determined by 13C-NMR, of below 8.2.
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