POLYCARBOXYLIC-ACID-BASED ADDITIVES FOR FUELS AND LUBRICANTS

摘要

The invention relates to the use of an olefin/carboxylic acid copolymer, wherein the copolymer contains 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 contains at least one free carboxylic acid side group, as a fuel additive or lubricant additive. The invention further relates to methods for producing such additives and fuels and lubricants to which such additives have been added, for example, in particular, as a detergent additive, for reducing or preventing deposits in the injection systems of direct-injection diesel engines, in particular in common-rail injection systems, for reducing the fuel consumption of direct-injection diesel engines, in particular of diesel engines having common-rail injection systems, and for minimizing the power loss in direct-injection diesel engines, in particular in diesel engines having common-rail injection systems, and as an additive for gasoline fuels, in particular for the operation of DISI engines.