Engine oil composition

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United States of America Patent

PATENT NO 12104137
APP PUB NO 20230287292A1
SERIAL NO

18040165

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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The present invention provides an engine oil composition including 70 to 95 percent by weight of a base oil and 0.01 to 15 percent by weight of a dispersant comb polymer, based on the overall weight of the engine oil composition. The dispersant comb polymer consists of 13.7% by weight of a macromonomer, which is an ester of methacrylic acid and a hydroxylated hydrogenated polybutadiene with Mn of 4750 g/mol; 51.5% by weight of n-butyl methacrylate; 17.3% by weight of LMA; 11.2% by weight of styrene; 0.2% by weight of methyl methacrylate; and 6.10% by weight of N,N-dimethylaminoethyl methacrylate. The modified dispersant inhibitor package contains 30 wt % or less of succinimide type dispersant based on the overall weight of the modified dispersant inhibitor additive package, and the engine oil composition has an SAE viscosity grade of 0W-X, wherein X is 30 or less.

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Patent Owner(s)

Patent OwnerAddress
SHELL USA INCP O BOX 576 HOUSTON TX 77001-0576

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Desai, Priyanka Subhash Houston, US 1 0
Southby, Mark Clift London, GB 17 29

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