Chlorine-free lubricating oils having modified high molecular weight succinimides

US5356552A · kind A · utility

Assignee

• Chevron Research and Technology Company, A Division of Chevron U.S.A. Inc. · US

Inventors

• James J. Harrison · Calabasas, US
• William R. Ruhe, Jr. · Benicia, US
• Jack E. Morris · Corona, US
• Jacques Cazin · Montivilliers, FR

Key dates

• Filing date: Oct 12, 1993
• Grant date: Oct 18, 1994
• Expiry date: Oct 12, 2013

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10N2070/02
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Alkenyl or alkyl succinimide additives which are the reaction product of a high molecular weight alkenyl- or alkyl-substituted succinic anhydride and a polyalkylene polyamine having an average of greater than 4 nitrogen atoms per mole, wherein the reaction product is post-treated with a cyclic carbonate, are compatible with fluoroelastomer engine seals and, for concentration levels at which fluoroelastomer seal compatibility is achieved, possess improved dispersancy and/or detergency properties when employed in chlorine-free lubricating oils.