Engine lubricant for improved fuel economy

US8093191B2 · kind B2 · utility

Assignee

• The Lubrizol Corporation · US

Inventors

• Mohamed G. Fahmy · Eastlake, US
• Daniel C. Visger · Mentor, US
• Barton J. Schober · Logan, US
• Brent R. Dohner · Kyle, US
• Patrick E. Moster · Bay Village, US
• Jody A. Kocsis · Chagrin Falls, US
• Isao Nakagawa · Tokyo, JP

Key dates

• Filing date: Dec 14, 2006
• Grant date: Jan 10, 2012
• Expiry date: Feb 14, 2028

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10N2040/25
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A lubricant composition comprising an oil of lubricating viscosity, an amino-functionalized acrylic or methacrylic-containing polymer, comprising about 2 percent to about 8 percent by weight of an amine moiety bearing a tertiary amino group, attached to said polymer through an ester, amide, or imide linkage; and a nitrogen-containing dispersant, provides reduced friction to an internal combustion engine and improved fuel economy.