Lubricant base oils and lubricant compositions and methods...

C - Chemistry – Metallurgy – 10 – M

Patent

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C10M 101/02 (2006.01) C10M 107/00 (2006.01) C10M 107/10 (2006.01)

Patent

CA 2678700

A liquid lubricant base oil composition comprising (i) a base stock comprising at least 95 % by weight saturated hydrocarbons such as for example a Group II base stock, a Group III base stock and/or a base stock derived from Fischer-Tropsch synthesised, waxy, paraffinic hydrocarbon material and (ii) 0.2 to 30 % by weight of an aromatic extract which has a dimethyl sulphoxide extractable polycyclic aromatics content of less than 3 weight % may be made by blending the components together and may be used with one or more additives in a lubricant composition which may be used in applications such as marine engine lubricants.

L'invention comprend une composition liquide d'huile de base lubrifiante comprenant : (i) une charge de base comprenant au moins 95 % en poids d'hydrocarbures saturés tels que, par exemple, une charge de base du Groupe II, une charge de base du Groupe III et/ou une charge de base dérivée d'un matériau d'hydrocarbure paraffinique, paraffineux, obtenu par synthèse Fisher-Tropsch, et (ii) 0,2 à 30 % en poids d'un extrait aromatique qui a une teneur en aromatiques polycycliques extractibles de diméthylsulfoxyde inférieure à 3 % en poids. Cette composition liquide d'huile de base lubrifiante peut être obtenue par le mélange de tous ces composants et peut être utilisée avec un ou plusieurs additifs dans une composition lubrifiante pouvant être utilisée dans des lubrifiants pour moteurs marins.

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