US 12,104,137 B2
Engine oil composition
Priyanka Subhash Desai, Houston, TX (US); and Mark Clift Southby, London (GB)
Assigned to Shell USA, Inc., Houston, TX (US)
Appl. No. 18/040,165
Filed by SHELL OIL COMPANY, Houston, TX (US)
PCT Filed Sep. 1, 2021, PCT No. PCT/EP2021/074141
§ 371(c)(1), (2) Date Feb. 1, 2023,
PCT Pub. No. WO2022/049130, PCT Pub. Date Mar. 10, 2022.
Claims priority of provisional application 63/073,171, filed on Sep. 1, 2020.
Prior Publication US 2023/0287292 A1, Sep. 14, 2023
Int. Cl. 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)
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)] 5 Claims
OG exemplary drawing
 
1. An engine oil composition comprising:
i) in the range of 70 to 95 percent by weight of a base oil, based on the overall weight of the engine oil composition;
ii) in the range of 0.01 to 15 percent by weight of a dispersant comb polymer, based on the overall weight of the engine oil composition;
iii) in the range of from 4.99 to 15 percent by weight of a modified dispersant inhibitor additive package based on the overall 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 with Mn of 4750 g/mol;
b. 51.5% by weight of n-butyl methacrylate;
c. 17.3% by weight of LMA;
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;
wherein the modified dispersant inhibitor package contains 30 wt % or less of succinimide dispersant based on the overall weight of the modified dispersant inhibitor additive package, and
wherein the engine oil composition has an SAE viscosity grade of 0W-X, wherein X is 30 or less.