C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 73/02 (2006.01) B01D 15/00 (2006.01) B01D 35/00 (2006.01) B01J 20/26 (2006.01) C08G 12/00 (2006.01) C08G 14/073 (2006.01) C10M 149/22 (2006.01) C10M 171/06 (2006.01) C10M 175/00 (2006.01)
Patent
CA 2160778
A method, composition and filter for reducing the presence of sludge or varnish precursors in a lubricating oil circulating within an internal combustion engine. The lubricating oil containing sludge or varnish precursors is contacted with discrete particles of an oil insoluble, oil wettable compound having an antioxidant functional group and/or a dispersant functional group, which are capable of complexing with sludge or varnish precursors. Preferably the compounds comprise a crosslinked amine having ethylene amine functionality.
Brownawell Darrell W.
Emert Jacob
Jones Cruise K.
Patil Abhimanyu O.
Thaler Warren A.
Borden Ladner Gervais Llp
Exxon Chemical Patents Inc.
Exxonmobil Chemical Patents Inc.
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