Patent · US Active

Non-aromatic based antioxidants for lubricants

US9273266B2 · kind B2 · utility

2Cited by

12References

8Claims

0Family size

Assignee

DOW GLOBAL TECHNOLOGIES LLC · US

Inventors

Martin R. Greaves · Hirzel, CH
Evelyn A. Zaugg-Hoozemans · Horgen, CH
Timothy A. Morley · Horgen, CH

Key dates

Filing date	Sep 20, 2011
Grant date	Mar 1, 2016
Priority date	—
Expiry date	Dec 24, 2031

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC10N2040/30
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

A lubricant composition comprises a cycloaliphatic amine alkoxylate and a base oil selected from (a) a polyalkylene glycol; (b) a polyalphaolefin; (c) a naphthenic compound; and (d) combinations thereof; provided that the cycloaliphatic amine alkoxylate and the base oil are miscible. The lubricant may exhibit a viscosity change at 40° C. of less than 5 percent (%) after 13 days at 120° C. in dry air, indicating significant thermoxidative stability with minimal or no aromatic content, thereby enabling use of Groups II and III base oils, in particular, without reduced toxicity and/or quality concerns as compared with Group I base oil lubricants.

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