Polycarboxylic acid-based additives for fuels and lubricants

US11168273B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Maxim Peretolchin · Ludwigshafen, DE
• Harald Böhnke · Mannheim, DE
• Wolfgang Grabarse · Mannheim, DE
• Ludwig Völkel · Schifferstadt, DE
• Markus Hansch · Speyer, DE
• Günter Oetter · Bischofswerda, DE
• Aaron Flores-Figueroa · Mannheim, DE
• Klaus Mühlbach · Grünstadt, DE
• Ivette Garcia Castro · Ludwigshafen, DE

Key dates

• Filing date: Dec 4, 2014
• Grant date: Nov 9, 2021
• Expiry date: Dec 4, 2034

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10L2250/04
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to the use of an olefin-carboxylic acid copolymer, wherein the copolymer comprises at least one free carboxylic acid side group, or of a nitrogen compound quaternized with epoxide in the presence of an olefin-carboxylic acid copolymer, wherein the copolymer comprises at least one free carboxylic acid side group, as a fuel additive or lubricant additive; to processes for preparing additives of this kind, and to fuels and lubricants additized therewith; such as, more particularly, as a detergent additive; for reduction or prevention of deposits in the injection systems of direct injection diesel engines, especially in common rail injection systems, for reduction of the fuel consumption of direct injection diesel engines, especially of diesel engines with common rail injection systems, and for minimization of power loss in direct injection diesel engines, especially in diesel engines with common rail injection systems; and as an additive for gasoline fuels, especially for operation of DISI engines.