US2005102891A1PendingUtilityA1

Gasoline composition

50
Priority: Jan 14, 2000Filed: Sep 3, 2004Published: May 19, 2005
Est. expiryJan 14, 2020(expired)· nominal 20-yr term from priority
Inventors:Robert H. BarbourGideon FreemanAlan M. Schilowitz
C10L 1/224C10L 1/1881C10L 1/19C10L 1/1888C10L 10/08C10L 1/2222C10L 1/1883
50
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Claims

Abstract

This invention relates to a fuel composition comprising (i) a low sulphur fuel having a sulphur content of less than 30 ppm, a bromine number of less than 10 and an ultraviolet absorbance at 319 nm is below 0.15 and (ii) an effective amount of an ashless friction reducing additive which is a fatty acid having 10-30 carbon atoms or a derivative thereof. The fuel of the specified characteristics shown improved response to the friction reducing additive in respect of its lubricity performance.

Claims

exact text as granted — not AI-modified
1 . A composition comprising (i) a low sulphur gasoline having a sulphur content of less than 30 ppm, a bromine number of less than 10 and an ultraviolet absorbance at 319 nm below 0.15 and (ii) less than 1000 mg per kg of the low sulphur gasoline of an ashless friction reducing additive which is a fatty acid having 10-30 carbon atoms or a derivative thereof selected from the alkylamine salts, alkylamides and alkylesters of such acids and oligomers thereof.  
     
     
         2 . The composition according to  claim 1  wherein the gasoline has a bromine number below 5.  
     
     
         3 . The composition according to  claim 1  wherein the gasoline has a sulphur content below 20 ppm.  
     
     
         4 . The composition according  claim 1  wherein the gasoline has an UV absorbance at 319 nm of below 0.07.  
     
     
         5 . The composition according to  claim 2  wherein the gasoline has a sulfur content below 20 ppm.  
     
     
         6 . The composition according to  claim 2  wherein the gasoline has an UV absorbance at 319 nm of below 0.07.  
     
     
         7 . The composition according to  claim 3  wherein the gasoline has UV absorbance at 319 nm of below 0.07.  
     
     
         8 . The composition according to  claim 1 ,  2 ,  3 ,  4 ,  5 ,  6  or  7  wherein the fatty acid is derived from naturally occurring fats and oils and oligomers thereof.  
     
     
         9 . The composition according  claim 1 ,  2 ,  3 ,  4 ,  5 ,  6  or  7  wherein the ashless friction reducing additive is an alkylamine salt of a fatty acid derived from naturally occurring fats and oils and oligomers thereof.  
     
     
         10 . The composition according  claim 1 ,  2 ,  3 ,  4 ,  5 ,  6  or  7  wherein the ashless friction reducing additive is an alkylamide of a fatty acid derived from naturally occurring fats and oils and oligomers thereof.  
     
     
         11 . The composition according to  claim 1 ,  2 ,  3 ,  4 ,  5 ,  6  or  7  wherein the ashless friction reducing additive is an alkylester of a fatty acid derived from naturally occurring fats and oils and oligomers thereof.  
     
     
         12 . The composition according to  claim 9  wherein the alkylamine salt is an alkylamine carboxylate salt which is n-butylamine oleate as shown in the formula below or a derivative thereof:  
         CH 3 —(CH 2 ) 7 —CH:CH—(CH 2 ) 7 —C(O)O −+ NH 3 C 4 H 9 .  
     
     
         13 . The composition according  claim 1 ,  2 ,  3 ,  4 ,  5 ,  6  or  7  wherein the fatty acid or derivative thereof is a long chain fatty acid or a derivative thereof and is a substance comprising tall oil acid or derivative thereof.  
     
     
         14 . The composition according to  claim 1 ,  2 ,  3 ,  4 ,  5 ,  6  or  7  wherein the treat level of the friction reducing additive is from 1-500 mg per kg of gasoline.  
     
     
         15 . The composition according to  claim 1 ,  2 ,  3 ,  4 ,  5 ,  6  or  7  wherein the treat level of the friction reducing additive is from 4-200 ppm based on the gasoline.  
     
     
         16 . The composition according to  claim 1 ,  2 ,  3 ,  4 ,  5 ,  6  or  7  wherein the treat level of the friction reducing additive is from 10-100 ppm based on the gasoline.  
     
     
         17 . The composition according to  claim 1 ,  2 ,  3 ,  4 ,  5 ,  6  or  7  wherein the treat level of the friction reducing additive is from 25-75 ppm based on the gasoline.  
     
     
         18 . The composition according to  claim 8  wherein the treat level of the friction reducing additive is from 1-500 mg per kg of gasoline.  
     
     
         19 . The composition according to  claim 9  wherein the treat level of the friction reducing additive is from 1-500 mg per kg of gasoline.  
     
     
         20 . The composition according to  claim 10  wherein the treat level of the friction reducing additive is from 1-500 mg per kg of gasoline.  
     
     
         21 . The composition according to  claim 11  wherein the treat level of the friction reducing additive is from 1-500 mg per kg of gasoline.  
     
     
         22 . The composition according to  claim 12  wherein the treat level of the friction reducing additive is from 1-500 mg per kg of gasoline.  
     
     
         23 . The composition according to  claim 13  wherein the treat level of the friction reducing additive is from 1-500 mg per kg of gasoline.  
     
     
         24 . A method for improving the efficacy of ashless friction reducing additive used in gasoline which additive is a fatty acid having 10-30 carbon atoms or a derivative thereof selected from the alkylamine salts, alkylamides and alkylesters of such acids and oligomers thereof by combining said additive with a low sulfur gasoline at a treat level of less than 1000 mg of additive per kg of gasoline, wherein the gasoline is characterized by having a sulfur content of less than 30 ppm, a bromine number of less than about 10, and an ultraviolet absorbance at 319 nm below 0.15.

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