Additives for low-sulfur fuels

Abstract

The invention relates to fuel compositions containing over 50% percent by weight diesel, gasoline, kerosene, or other hydrocarbons which are liquid at room temperature. The invention is characterized in that the compositions contain 0.001 to 0.1 percent by weight of an additive of formula (I), wherein R represents a monounsaturated or polyunsaturated alkylene radical with 17 C atoms, n is 2 or 3 and k represents a number between 0.5 and 3, with the proviso that the sulfur content in the fuel composition docs not exceed a maximum of 0.2 percent by weight. R—COO—(C n H 2n+1 —O) k —H

1 - 16 . (Canceled)  
     
     
         17 . A composition comprising: (i) a fuel component selected from the group consisting of diesel, gasoline, kerosene, other hydrocarbons which are liquid at room temperature and mixtures thereof; and (ii) and an additive of the general formula (I):  
       R—COO—(C n H 2n —O) k —H   (I)  
       wherein r represents a mono- or poly-unsaturated alkylene group having from 10 to 17 carbon atoms, n is 2 or 3, and k represents a number of from 0.5 to 3; wherein the fuel component is present in an amount of more than 50% by weight, wherein the additive is present in an amount of from 0.001 to 0.1% by weight; and wherein the composition has a sulfur content of 0.2% by weight or less, all weight percents based on the composition:  
     
     
         18 . The composition according to  claim 17 , wherein n is 2.  
     
     
         19 . The composition according to  claim 17 , wherein k represents a number of from 0.5 to 1.5.  
     
     
         20 . The composition according to  claim 17 , wherein k is 1.  
     
     
         21 . The composition according to  claim 18 , wherein k represents a number of from 0.5 to 1.5.  
     
     
         22 . The composition according to  claim 18 , wherein k is 1.  
     
     
         23 . The composition according to  claim 17 , wherein R represents a mono- or poly-unsaturated alkylene group having 17 carbon atoms.  
     
     
         24 . The composition according to  claim 17 , wherein R represents a mono-unsaturated alkylene group having 17 carbon atoms.  
     
     
         25 . The composition according to  claim 21 , wherein R represents a mono- or poly-unsaturated alkylene group having 17 carbon atoms.  
     
     
         26 . The composition according to  claim 21 , wherein R represents a mono-unsaturated alkylene group having 17 carbon atoms.  
     
     
         27 . The composition according to  claim 17 , wherein the additive is present in an amount of from 0.001 to 0.01% by weight.  
     
     
         28 . The composition according to  claim 23 , wherein the additive is present in an amount of from 0.001 to 0.01% by weight.  
     
     
         29 . The composition according to  claim 25 , wherein the additive is present in an amount of from 0.001 to 0.01% by weight.  
     
     
         30 . The composition according to  claim 17 , wherein the composition has a sulfur content of from 0.005 to 0.05% by weight.  
     
     
         31 . The composition according to  claim 17 , wherein the composition has a sulfur content of 0.005% by weight or less.  
     
     
         32 . The composition according to  claim 17 , wherein the composition has an aromatic content of less than 25% by volume.  
     
     
         33 . The composition according to  claim 17 , wherein the fuel component comprises a diesel having a cetane number below 50.  
     
     
         34 . The composition according to  claim 17 , wherein the composition has an HFRR friction coefficient at 60° C. of at most 500 μm.  
     
     
         35 . The composition according to  claim 17 , wherein the composition is free of fatty alcohols, alkoxylated fatty alcohols and alkanolamides.