Overbased alkyl oxy benzene sulfonates as detergents

Details Overbased alkyl oxy benzene sulfonates as detergents Overbased alkyl oxy benzene sulfonates as detergents

C - Chemistry, Metallurgy

10

M

C10M 159/22 (2006.01) C10M 135/10 (2006.01) C10M 159/24 (2006.01) C10M 163/00 (2006.01) C10M 167/00 (2006.01)

Patent

CA 2184159

A marine lubricating oil has a major amount of oil of lubticating viscosity; and a minor amount of an overbased, alkyl oxy benzene sulfonate having a TBN of at least 200. Betwxn 40 wt.% and 80 wt.% of the alkyl group is attached at the 4-position and higher positions of the alkyl group. The oxy group can be hydroxy, methoxy, ethoxy, propoxy, butoxy, pentoxy, or hexoxy.

La présente invention concerne un lubrifiant pour moteurs marins constitué, pour une majeure partie, d'une huile dont la viscosité lui confère un pouvoir lubrifiant, et pour une partie mineure, d'un sulfonate de benzène oxy alkyle possédant un indice de basicité totale (TBN) au moins égal à 200. Entre 40 et 80 % en poids du groupe alkyle est fixé au niveau de la position 4 ou des positions d'ordre supérieur du groupe alkyle. Le groupe oxy peut être un groupe hydroxy, méthoxy, éthoxy, propoxy, butoxy, pentoxy ou hexoxy.

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