C - Chemistry – Metallurgy – 10 – M
Patent
C - Chemistry, Metallurgy
10
M
C10M 163/00 (2006.01) C10M 129/42 (2006.01) C10M 129/68 (2006.01) C10M 129/84 (2006.01) C10M 129/93 (2006.01) C10M 141/10 (2006.01) C10M 159/12 (2006.01)
Patent
CA 2381982
Lubricating oil formulations comprising base oil, sulfurphosphorous anti- wear/extreme pressure agent and such a hindered phenol antioxidant, which when combined form crystals and wherein a base oil characterized as having a saturates content of 99 wt% or more and containing these additives is stabilized against the crystal formation by the addition of a minor amount of high molecular weigh di- or polycarboxylic acid, or anhydride and of an ester.
Cette invention se rapporte à des formulations d'huiles lubrifiantes comprenant une huile de base telle que soufre-phosphore, un agent de pression extrême/anti-usure et un antioxydant à phénol empêché qui, combinés, produisent des cristaux. L'huile de base se caractérise par une teneur en particules saturées supérieure ou égale à 99 % en poids et elle est stabilisée contre la formation de cristaux par l'adjonction d'une petite quantité d'acide polycarboxylique ou dicarboxylique de poids moléculaire élevé, ou d'anhydride et d'un ester.
Borden Ladner Gervais Llp
Exxonmobil Research And Engineering Company
Holt David Gary Lawton
LandOfFree
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