Mixed phosphorus esters for lubricant applications

US10611981B2 · kind B2 · utility

Assignee

• The Lubrizol Corporation · US

Inventors

• William D. Abraham · Powell, US
• Nga Nguyen · Scotch Plains, US
• Paul E. Adams · Willoughby Hills, US
• Kurt F. Wollenberg · Chardon, US

Key dates

• Filing date: Nov 5, 2015
• Grant date: Apr 7, 2020
• Expiry date: Apr 18, 2036

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10N2050/10
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A lubricant composition of an oil of lubricating viscosity and a phosphite ester reaction product of a monomeric phosphorous acid or an ester thereof with a first alkylene diol having two hydroxy groups in a 1,4 or 1,5 or 1,6 relationship and a second, alkyl-substituted, diol being a substituted 1,3-propylene diol, exhibits good wear and frictional performance.