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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 11739282 B1

PDFFull Text
Date of Patent:
Aug. 29, 2023

Filed:

Mar. 16, 2020

Lubricant composition

Applicant:

Basf SE, Ludwigshafen am Rhein, DE;

Inventors:

Michael Hoey, Tarrytown, NY (US);

David Eliezer Chasan, Tarrytown, NY (US);

Jeffrey Schoonmaker, Tarrytown, NY (US);

Ryan James Fenton, Tarrytown, NY (US);

Assignee:

BASF SE, Ludwigshafen am Rhein, DE;

Attorney:

Faegre Drinker Biddle & Reath LLP

Primary Examiner:

Prem C Singh

Assistant Examiner:

Francis C Campanell

Int. Cl.
CPC ...
C10M 141/08 (2006.01); C10M 133/12 (2006.01); C10M 135/22 (2006.01); C10M 135/26 (2006.01); C10M 169/04 (2006.01); C10M 135/04 (2006.01); C10N 40/00 (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 40/25 (2006.01);
U.S. Cl.
CPC ...
C10M 141/08 (2013.01); C10M 133/12 (2013.01); C10M 135/04 (2013.01); C10M 135/22 (2013.01); C10M 135/26 (2013.01); C10M 169/04 (2013.01); C10M 2203/003 (2013.01); C10M 2215/064 (2013.01); C10M 2215/065 (2013.01); C10M 2215/26 (2013.01); C10M 2219/022 (2013.01); C10M 2219/082 (2013.01); C10M 2219/085 (2013.01); C10N 2030/06 (2013.01); C10N 2030/10 (2013.01); C10N 2030/12 (2013.01); C10N 2030/43 (2020.05); C10N 2040/02 (2013.01); C10N 2040/135 (2020.05); C10N 2040/25 (2013.01);
Abstract

Lubricant compositions comprising a base oil, one or more antioxidants selected from a group consisting of N-α-naphthyl-N-phenylamine antioxidants and diphenylamine antioxidants; and a sulfur-containing additive comprising up to seven carbon atoms exhibit outstanding oxidative stability and non-corrosion properties. The N-α-naphthyl-N-phenylamine antioxidants plus diphenylamine antioxidants in total may be present from about 0.2 wt % to about 0.8 wt %, based on the total weight of the lubricant composition. The sulfur provided by the sulfur-containing additive may be present from about 50 ppm to about 1000 ppm by weight, based on the total weight of the lubricant composition.

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