Patent · US Active

Lubricant composition

US11066620B2 · kind B2 · utility

1Cited by

49References

14Claims

0Family size

Assignee

BASF SE

Inventors

Michael Hoey · Maplewood, US
David Eliezer Chasan · Teaneck, US
Jeffrey Schoonmaker · Wallkill, US
Ryan James Fenton · Norwalk, US

Key dates

Filing date	Mar 16, 2020
Grant date	Jul 20, 2021
Priority date	—
Expiry date	Mar 16, 2040

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC10N2040/25
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.