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Antifoam fuel additives

Inactive Publication Date: 2010-05-06
AFTON CHEMICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Automotive lubricants, including diesel fuels, are often used in environments in which the lubricant is subject to mechanical agitation, thereby resulting in foaming of the lubricant.
Lubricant foaming can cause in insufficient lubrication and / or inefficient combustion, resulting in decreased engine life and / or increased fuel usage.

Method used

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  • Antifoam fuel additives

Examples

Experimental program
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Effect test

example 1

[0056]A 950 number average molecular weight polybutenyl succinic anhydride was heated to 95° C. An oil slurry of aminoguanidine bicarbonate (AGBC) was added over a 45 minute period. The mixture was heated under vacuum to 160° C. and held at that temperature for about 6 hours, removing water and carbon dioxide. The resulting mixture was filtered. It is believed, without being limited by theory, that the resultant mixture comprises an aminotriazole as described herein.

[0057]In the following examples, various base diesel fuels were each combined with various additives as described in Table 1, including the aminotriazole mixture described above, to produce fuel formulations that were evaluated for foam decay as described below.

TABLE 1Additive (mg / kg)Fuel AFuel BFuel CFuel DDispersant142.1042.1042.1042.10Aminotriazole Antifoam Agent0.005.000.005.00Solvent A220.0020.0075.5075.50Solvent B3132.00132.00103.90103.90Siloxane Antifoam Agent8.008.008.008.00Demulsifier A3.003.003.003.00Demulsifie...

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Abstract

A fuel additive concentrate, fuel comprising said additive concentrate, and method for improving the antifoam performance of a fuel are provided. The additive concentrate comprises (a) an aminotriazole compound comprising the reaction product of (i) a hydrocarbyl carbonyl compound, and (ii) an amine compound or salt thereof of formula (I)wherein R is selected from the group consisting of a hydrogen and a hydrocarbyl group containing from about 1 to about 15 carbon atoms, and R1 is selected from the group consisting of hydrogen and a hydrocarbyl group containing from about 1 to about 20 carbon atoms; and (b) a hydrocarbyl-substituted succinimide dispersant, wherein the ratio of (a) to (b) ranges from about 1:10 to about 10:1.

Description

FIELD OF THE INVENTION[0001]This disclosure relates generally to fuel additive concentrates. More specifically, the present disclosure is directed to fuel additive concentrates that are effective to enhance the antifoam performance of fuel, and methods of use thereof.BACKGROUND OF THE INVENTION[0002]Automotive lubricants, including diesel fuels, are often used in environments in which the lubricant is subject to mechanical agitation, thereby resulting in foaming of the lubricant. Lubricant foaming can cause in insufficient lubrication and / or inefficient combustion, resulting in decreased engine life and / or increased fuel usage. Lubricant foaming can be exacerbated by the presence of other additives in the lubricant. Thus, antifoam agents are incorporated into automotive lubricants to reduce the tendency of the lubricant to foam during operation of the engine.[0003]As automotive technology continues to develop, lubricant formulations will require increasing performance demands. Accor...

Claims

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Application Information

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IPC IPC(8): C10L1/22
CPCB65D31/04B65D33/004B65D33/28C10L1/143C10L1/1616C10L1/1824C10L1/22C10L1/221C10L1/224C10L1/232C10L1/238C10L1/2383C10L1/285C10L10/00
Inventor RICHARDSON, DUNCAN
Owner AFTON CHEMICAL
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