Oxidation-stabilized lubricant additives for highly desulfurized fuel oils
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United States of America Patent
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Oct 19, 2010
Grant Date -
Jul 27, 2006
app pub date -
Mar 28, 2006
filing date -
Jul 9, 2002
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Expired
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Abstract
The present invention provides an additive for improving the lubricity of fuel oils having a maximum sulfur content of 0.035% by weight. The additive comprises A) at least one partial ester composed of a di- or polyhydric alcohol and unsaturated and optionally also saturated fatty acids whose carbon chain lengths are between 8 and 30 carbon atoms, at least 60% of the fatty acid radicals containing at least one double bond, and B) at least one alkylphenol-aldehyde resin, obtainable by the condensation of (i) at least one alkylphenol having at least one C.sub.6-C.sub.24-alkyl or C.sub.6-C.sub.24-alkenyl radical and (ii) at least one aldehyde or ketone, to a degree of condensation of between 2 and 50 alkylphenol units.
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