C - Chemistry – Metallurgy – 10 – M
Patent
C - Chemistry, Metallurgy
10
M
C10M 141/06 (2006.01) C10M 141/10 (2006.01) C10M 161/00 (2006.01) C10M 163/00 (2006.01)
Patent
CA 2650628
A lubricating oil composition comprising lubricating oil base oil, one or more anti-wear additives and one or more poly (hydroxycarboxylic acid) amide salt derivatives preparable by reaction of an amine and a poly (hydroxycarboxylic acid) of formula (I) wherein Y is hydrogen or optionally substituted hydrocarbyl group, A is a divalent optionally substituted hydrocarbyl group and n is from 1 to 100, preferably from 1 to 10, with an acid or a quaternizmg agent; and a method of reducing deposits in an internal combustion engine, which method comprises lubricating said internal combustion engine with said lubricating oil composition.
L'invention porte sur la composition d'une huile lubrifiante comprenant : une base d'huile, un ou plusieurs additifs anti usure, et un ou plusieurs dérivés de sels amidés de l'acide poly (hydroxycarboxylique) obtenus par réaction d'une amine et de l'acide poly (hydroxycarboxylique) de formule (I) dans laquelle: Y est Hpu un groupe hydrocarbyle facultativement substitué, et n est de 1à 100 et de préférence de 1 à 10, avec un acide ou un agent quaternisant. L'invention porte également sur un procédé de réduction des dépôts dans un moteur à combustion interne consistant à le lubrifier avec ladite composition.
Nelson David Charles
Southby Mark Clift
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
Shell Internationale Research Maatschappij B.v.
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