Patent ID: 9011556
Filing Date: 2015-04-21
Classification: C10L

Abstract:
1. A low-sulfur middle distillate fuel composition comprising: from about 50 to about 150 ppm of a hydrocarbyl-substituted succinimide comprising the product of contacting a hydrocarbyl-substituted succinic anhydride and ammonia; and an ultra low-sulfur fuel composition comprising less than 15 ppm sulfur, wherein the hydrocarbyl-substituted succinic anhydride is the product of contacting an olefinic unsaturated hydrocarbon with maleic anhydride, wherein the olefinic unsaturated hydrocarbon has isomerized alpha olefins and a number average molecular weight ranging from about 100 to about 300 as determined by gel permeation chromatography, the olefinic unsaturated hydrocarbon comprising predominantly C wherein the low-sulfur middle distillate fuel composition comprises a sufficient amount of the hydrocarbyl-substituted succinimide to achieve a wear scar having a reduced diameter in a ASTM D6079 HFRR rig test compared to a diameter of a wear scar obtained using the low-sulfur fuel without the hydrocarbyl-substituted succinimide.