METHOD OF DETERMINING DETERGENT PROPERTIES IN GASOLINE ADDITIVES Russian patent published in 2013 - IPC G01N33/22 

FIELD: chemistry.

SUBSTANCE: method involves determining resins washed with n-heptane in gasoline before and after adding the analysed additive according to GOST 1567, wherein the gasoline used contains washed resins in amount of at least 5 mg per 100 ml gasoline (e.g. secondary gasoline - catalytic and thermal cracking, viscosity breaking, coking, polymerisation etc, usually with high content of olefin hydrocarbons). The analysed additive is added in amount of 0.03-0.1 wt %. Presence of detergent properties in the analysed additive is determined from the difference in the amount of washed resins in the gasoline before and after adding the analysed additive.

EFFECT: high reliability of determination.

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