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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 12104137 B1

PDFFull Text
Date of Patent:
Oct. 01, 2024

Filed:

Sep. 01, 2021

Engine oil composition

Applicant:

Shell Oil Company, Houston, TX (US);

Inventors:

Priyanka Subhash Desai, Houston, TX (US);

Mark Clift Southby, London, GB;

Assignee:

Shell USA, Inc., Houston, TX (US);

Attorney:

Shell USA, Inc.

Primary Examiner:

Cephia D Toomer

Int. Cl.
CPC ...
C10M 169/04 (2006.01); C10M 107/00 (2006.01); C10M 133/56 (2006.01); C10M 141/00 (2006.01); C10N 20/00 (2006.01); C10N 20/02 (2006.01); C10N 20/04 (2006.01); C10N 30/00 (2006.01); C10N 30/02 (2006.01); C10N 30/04 (2006.01); C10N 40/25 (2006.01);
U.S. Cl.
CPC ...
C10M 169/04 (2013.01); C10M 107/00 (2013.01); C10M 133/56 (2013.01); C10M 141/00 (2013.01); C10M 2205/04 (2013.01); C10M 2205/06 (2013.01); C10M 2205/173 (2013.01); C10M 2209/084 (2013.01); C10M 2215/28 (2013.01); C10M 2217/023 (2013.01); C10N 2020/02 (2013.01); C10N 2020/04 (2013.01); C10N 2020/071 (2020.05); C10N 2030/02 (2013.01); C10N 2030/04 (2013.01); C10N 2030/54 (2020.05); C10N 2040/25 (2013.01);
Abstract

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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