Engine oil composition

The present invention provides an engine oil composition comprising: i) a base oil in the range of 70 to 95 wt%, based on the total weight of the engine oil composition; ii) a dispersant comb polymer in the range of from 0.01% to 15% by weight, based on the total weight of the engine oil composition...

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Bibliographic Details
Main Authors DESAI PARIKSHIT S, SOUTHBY MARK CLIFT
Format Patent
LanguageChinese
English
Published 02.06.2023
Subjects
CHEMISTRY
FUELS
INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATINGCOMPOSITIONS
LUBRICANTS
LUBRICATING COMPOSITIONS
METALLURGY
PEAT
PETROLEUM, GAS OR COKE INDUSTRIES
TECHNICAL GASES CONTAINING CARBON MONOXIDE
USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION
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Summary:The present invention provides an engine oil composition comprising: i) a base oil in the range of 70 to 95 wt%, based on the total weight of the engine oil composition; ii) a dispersant comb polymer in the range of from 0.01% to 15% by weight, based on the total weight of the engine oil composition; wherein the dispersant comb polymer consists of: a. 13.7% by weight of a macromonomer, which is an ester of methacrylic acid and a hydroxylated hydrogenated polybutadiene having an Mn of 4750 g/mol; b, 51.5% by weight of n-butyl methacrylate; c. 17.3% by weight of LMA (linear maleic anhydride); d. 11.2% by weight of styrene; e. 0.2% by weight of methyl methacrylate; and f. 6.1% by weight of N, N-dimethylaminoethyl methacrylate (N, N-dimethylaminoethyl methacrylate); wherein the modified dispersant inhibitor package comprises 30% by weight or less of a succinimide-type dispersant, based on the total weight of the modified dispersant inhibitor additive package, and wherein the engine oil composition has an SAE visc
Bibliography:Application Number: CN202180053139