Lubricating compositions

US11702610B2 · kind B2 · utility

Assignee

• The Lubrizol Corporation · US

Inventors

• Daniel J. Knapton · Willowick, US
• Allison M. Williamson · Chardon, US
• Thomas Derevjanik · Mentor-on-the-Lake, US

Key dates

• Filing date: Jun 19, 2019
• Grant date: Jul 18, 2023
• Expiry date: Jun 19, 2039

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10N2040/252
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Lubricating compositions containing a phosphorus-containing salt of an acylated ethylene-α-olefin polymer substituted with an aliphatic polyamine having at least one primary or secondary amine, the lubricating composition having a total phosphorus content in an amount of 200 ppm to 600 ppm by weight of the lubricating composition. The phosphorus-containing salt additive described herein can be used as an anti-wear agent in lubricating composition for diesel engines.