High efficiency lubricating composition

US9127231B2 · kind B2 · utility

Assignee

• EXXONMOBIL RESEARCH AND ENGINEERING COMPANY · US

Inventors

• James T. Carey · Medford, US
• S. Galiano-Roth Angela · Mullica Hill, US
• Michael L. Blumenfeld · Haddonfield, US
• Kathleen K. Cooper

Key dates

• Filing date: May 31, 2012
• Grant date: Sep 8, 2015
• Expiry date: Feb 19, 2033

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10N2040/04
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The lubricating composition of this invention is primarily comprised of an admixture of an API Group V base oil component and a polyolefin base oil component. In general, the blend components include at least 45 wt. % of a Group V base oil component having a kinematic viscosity of less than 20 cSt at 100° C., and from 10 wt. % to 60 wt. % of a polyolefin base oil component having a kinematic viscosity of at least 500 cSt and not greater than 4000 cSt at 100° C. The lubricating composition has improved efficiency and lower operating temperatures, comparable to polyalkylene glycol-based lubricant level, which provides improved machine life and seal life, relative to other lubricating compositions.