Alkoxylated quaternary ammonium salts and fuels containing them

摘要

A fuel additive and its preparation for a engine, a fuel containing the additive, a fuel additive concentrate, a method for improving performance of fuel injectors and a method for cleaning fuel injectors for an engine. The fuel additive includes a quaternary ammonium salt derived from a reaction of a hydrocarbyl substituted anhydride, a tertiary amine and a hydroxyl-containing epoxide, wherein the tertiary amine is devoid of primary and secondary amino groups.

主权项

1. A fuel additive for a fuel injected engine comprising a quaternary ammonium salt derived from a reaction of a hydrocarbyl substituted anhydride, a tertiary amine and a hydroxyl-containing epoxide selected from the group consisting of hydroxymethyl cyclohexene oxide, butanediol monoglycidyl ether, propanediol monoglycidyl ether, hexanediol monoglycidyl ether, cyclohexanedimethanol glycidyl ether, trimethylolpropane diglycidyl ether, glycerol diglycidyl ether, pentaerythritol triglycidyl ether, glycidol, 3-glycidyloxybenzyl alcohol, and combinations of two or more of the foregoing, wherein the tertiary amine is devoid of primary and secondary amino groups.