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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 12398339 B1

PDFFull Text
Date of Patent:
Aug. 26, 2025

Filed:

Apr. 05, 2023

Lubricating oil composition

Applicant:

Nof Corporation, Tokyo, JP;

Inventors:

Shunsuke Monjiyama, Nishinomiya, JP;

Kazuhiro Oda, Nishinomiya, JP;

Atsumi Urabe, Shinagawa-ku, JP;

Assignee:

NOF CORPORATION, Tokyo, JP;

Attorney:

Oblon, McClelland, Maier & Neustadt, L.L.P.

Primary Examiner:

Taiwo Oladapo

Int. Cl.
CPC ...
C10M 169/00 (2006.01); C10M 105/38 (2006.01); C10M 129/76 (2006.01); C10M 137/08 (2006.01); C10M 141/10 (2006.01); C10M 169/04 (2006.01); C10N 30/00 (2006.01); C10N 30/06 (2006.01); C10N 30/10 (2006.01); C10N 30/12 (2006.01); C10N 40/02 (2006.01); C10N 40/08 (2006.01); C10N 40/25 (2006.01);
U.S. Cl.
CPC ...
C10M 169/04 (2013.01); C10M 105/38 (2013.01); C10M 129/76 (2013.01); C10M 137/08 (2013.01); C10M 141/10 (2013.01); C10M 2207/2835 (2013.01); C10M 2207/288 (2013.01); C10M 2223/043 (2013.01); C10N 2030/06 (2013.01); C10N 2030/10 (2013.01); C10N 2030/12 (2013.01); C10N 2030/64 (2020.05); C10N 2040/02 (2013.01); C10N 2040/08 (2013.01); C10N 2040/25 (2013.01);
Abstract

The present invention is a lubricating oil composition containing, per 100 parts by mass of (A) an ester compound of a neopentyl polyol having 5 to 10 carbon atoms and a valence of alcohol of 2 to 6 and a linear unsaturated fatty acid having 16 to 22 carbon atoms, 0.1 to 1.5 parts by mass of a specific (B) acid phosphate ester amine salt, 0.01 to 0.25 parts by mass of a specific (C) succinic acid monoester, and 0.01 to 0.25 parts by mass of (D)N-oleoylsarcosine. According to the present invention, it is possible to provide a lubricating oil composition which is excellent in biodegradability, lubricity (anti-wear property), and rust preventive property against seawater, which is low in toxicity and accumulation to aquatic organisms, and further which is excellent in oxidation stability even in the presence of seawater.

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