FUEL COMPOSITION COMPRISING DETERGENT AND QUATERNARY AMMONIUM SALT ADDITIVE
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United States of America Patent
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Aug 3, 2015
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Mar 10, 2010
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A method of reducing deposits in a diesel engine, the method comprising combusting in the engine a diesel fuel composition comprising a detergent additive which is not a quaternary ammonium salt or a Mannich reaction product; and a quaternary ammonium salt additive comprising the reaction product of nitrogen containing species having at least one tertiary amine group and a quaternizing agent; wherein the nitrogen containing species is selected from:
- (i) the reaction product of a hydrocarbyl-substituted acylating agent and a compound comprising at least one tertiary amine group and a primary amine, secondary amine or alcohol group;(ii) a Mannich reaction product comprising a tertiary amine group; and(iii) a polyalkylene substituted amine having at least one tertiary amine group.
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