Patent ID: 8690968
Filing Date: 2014-04-08
Classification: C10L

Abstract:
1. A fuel composition comprising a major proportion of a middle distillate fuel and a minor proportion of a lubricity additive said additive comprising a hydrocarbyl-substituted succinimide prepared by combining an olefin and maleic anhydride to form a hydrocarbyl-substituted succinic anhydride and combining said hydrocarbyl-substituted succinic anhydride with ammonia to produce a hydrocarbyl-substituted succinimide, wherein the olefin is selected from the group consisting of (a) a mixture of oligomers, wherein the percentage of internal olefin oligomer is greater than 50% of the total olefin content; (b) a mixture of isobutylene oligomers; and (c) combinations thereof; wherein the olefin comprises a number average molecular weight of from about 150 to about 275; and wherein the lubricity additive is present in the fuel composition in an amount ranging from about 20 to about 300 ppm.