C - Chemistry – Metallurgy – 10 – M
Patent
C - Chemistry, Metallurgy
10
M
C10M 141/12 (2006.01)
Patent
CA 2648220
The present invention is directed to a lubricating oil composition comprising a lubricating oil basestock, a boron-containing additive of at least 0.1 weight percent of the composition and less than 8.0 weight percent, and ashless sulfur additive of at least 0.1 weight percent of the composition and less than 4.0 weight percent, a dispersant- detergent-inhibitor system of less than 15 percent weight percent of the composition, a zinc dithiophosphate additive of at least 0.2 weight percent of the composition and less than 2.0 weight percent of the composition. The elements in the forumulated oil composition having at least 100 and less than 630 PPM phosphorus, at least 1,000 PPM and less than 3,000 PPM, at least 100 and less than 630 ppm Phosphorous, and at least 105 PPM and less than 710 PPM zinc. In a second embodiment, an additive composition for lubricating oils is disclosed. In a third embodiment, a method to obtain favorable lubricating properties is disclosed.
L'invention concerne une composition d'huile lubrifiante contenant une huile de base, au moins 0,1% et moins de 8,0% en poids d'un additif contenant du bore, au moins 0,1% et moins de 4,0% en poids d'un additif au soufre sans cendre, un, moins de 15% en poids d'un système d'inhibition dispersant-détergent, au moins 0,2% en poids et moins de 2,0% en poids d'un additif au dithiophosphate de zinc. Les éléments présentas dans la composition composition d'huile comprennent au moins100 p.p.m. et moins de 630 p.p.m. de phosphore, au moins 1000 p.p.m. et moins de 3000 p.p.m. de soufre, au moins 100 et moins de 630 p.p.m. de phosphore et au moins 105 p.p.m. et moins de 710 p.p.m. de zinc. Dans un second mode de réalisation, l'invention concerne une composition additive pour lubrifier les huiles. Dans un troisième mode de réalisation, l'invention concerne une méthode d'obtention des propriétés lubrifiantes favorables.
Buck William H.
Deckman Douglas Edward
Farng Liehpao Oscar
Horodysky Andrew G.
Kennedy Steven
Borden Ladner Gervais Llp
Exxonmobil Research And Engineering Company
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