Stabilizing compositions for lubricating oils
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United States of America Patent
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Issued Date -
Sep 11, 2003
app pub date -
Nov 5, 2002
filing date -
May 10, 2000
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
Stabilising compositions for lubricant base stocks and lubricant formulations are composed of a mixture of (a) at least one aromatic aminic amine antioxidant optionally blended with at least one hindered phenolic antioxidant and (b) at least one neutral organo phosphate or phosphite, optionally blended with at least one acid organo phosphate or phosphite. These stabilising composition mixtures are characterised by their stabilising capacity which is considerably higher than that of either the single antioxidants or the single phosphate or phosphite additives. These stabilising compositions can be used in all fields where the single components of the mixtures are generally used and where deterioration due to oxidation processes takes place.
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