C - Chemistry – Metallurgy – 10 – M
Patent
C - Chemistry, Metallurgy
10
M
C10M 163/00 (2006.01) C10M 169/04 (2006.01)
Patent
CA 2537266
A natural gas engine oil composition with enhanced resistance to oxidation, nitration and viscosity increase comprising: an oil basestock; neutral and overbased metallic detergents; an antioxidant comprising an alkylthiocarbamoyl compound or a mixture of an aklylthiocarbamoyl compound and an ashless, non- sulfur containing, hindered phenol; and a zinc dihydrocarbyl dithiophosphate in an amount sufficient to provide the composition with from 250 to 450 wppm phosphorus.
L'invention concerne une composition d'huile pour moteur à gaz naturel qui présente une résistance accrue à l'oxydation et à une augmentation de la nitration et de la viscosité, et comprend: une huile de base; des détergents métalliques neutres et surbasiques; un antioxydant comprenant un composé alkylthiocarbamoyle ou un mélange d'un composé aklylthiocarbamoyle et d'un phénol encombré exempt de cendres et de soufre; et un dithiophosphate dihydrocarbyle de zinc en quantité suffisante pour fournir à la composition entre 250 et 450 ppm en poids de phosphore.
Borden Ladner Gervais Llp
Exxonmobil Research And Engineering Company
LandOfFree
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