Lubricating composition containing a self-assembling polymethacrylate block copolymer and an ethylene-α-olefin copolymer

US11359159B2 · kind B2 · utility

Assignee

• The Lubrizol Corporation · US

Inventors

• Reid A. Patterson · Euclid, US
• Timothy R. Smith · Newton, US
• Paul O'Hora · Loughborough, GB
• Edward P. Sampler · Coalville, GB
• Eugene Pashkovski · Bound Brook, US
• Kieran Trickett · Belper, GB

Key dates

• Filing date: Jun 25, 2018
• Grant date: Jun 14, 2022
• Expiry date: Jun 25, 2038

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10N2040/36
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention provides a lubricating composition comprising an oil of lubricating viscosity and synergistic mixture of a functionalized ethylene-α-olefin copolymer, a poly(meth)acrylate block polymer having a substantially oil soluble block and a substantially oil insoluble block. The invention also provides a method of lubricating a mechanical device using such a lubricating composition.