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1. WO2001079399 - LUBRIFIANT DE MOTEUR ET ADDITIF

Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

[ EN ]

CLAIMS

We claim:

Claim 1. An engine crankcase lubricant, comprising:

an effective amount of a base oil selected from the group consisting of Group I solvent refined mineral oils, Group II hydrocracked mineral oils, Group III severly hydrocracked oils, Group IV synthetic oils comprising polyolefins, Group V synthetic oils comprising esters and napthenes;

an effective amount of a dispersant inhibitor;

an effective amount of a seal swelling agent selected from the group consisting of phenate, phthalate plasticzer, dinonly phthalate plasticizer, dihexylpthalate plasticizer, sulfolanes, and phenates;

an effective amount of a molybdate compound selected from the group consisting of an oil soluble organo molybdenum, a sulfonated oxymolybdenum dialkydithiophosphate, a molybdenum dithiocarbamate, a molybdenum octoage, a molybdenum sulfide, and a molybdenum oxide; an effective amount of a viscosity improver selected from the group consisting of a polyisobutene, a polymethacrylate acid esters, a diene polymer, a polyolefin, a multifunctional viscosity diene polymer, a polyolefin and multifunctional viscosity improver, a styrene-butadiene rubber in mineral oil, a styrene iosprene viscosity improver;

an effective amount of a corrosion inhibitor selected from the group consisting of a borate ester, a dimercapto, a thiediapoles, and a benzotriazole; and

an effective amount of a pour point depressant selected from the group consisting of a polymethacyrlate, an alkylated bicyclic aromatic, a styrene ester, a polyfumerate, an oligomerized alkyl phenol, a dialky ester of phthalate acid, an ethylene vinyl acetate copolymer, and other mixed hydrocarbon polymers.