Cyclic quaternary ammonium salts as fuel or lubricant additives

US10689589B2 · kind B2 · utility

Assignee

• INNOSPEC LIMITED · GB

Inventor

• Stephen Leonard Cook · Chester, GB

Key dates

• Filing date: Jul 28, 2016
• Grant date: Jun 23, 2020
• Expiry date: Dec 7, 2036

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10M2215/224
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Quaternary ammonium salts of formula: wherein each of R1 and R2 is independently selected from an optionally substituted alkyl, alkenyl or aryl group having less than 8 carbon atoms, R together with N forms an aliphatic or aromatic heterocycle having less than 12 carbons atoms and R5 is hydrogen or an optionally substituted hydrocarbyl group. The use of these compounds as fuel or lubricant additives, especially as diesel fuel additives.