PROTECTION LIQUID FUELS Russian patent published in 2016 - IPC C10L1/14 C10L1/22 C10L1/18 C10L1/32 

FIELD: chemistry.

SUBSTANCE: invention discloses a liquid concentrate for protecting liquid fuels from water contamination, substantially consisting of: (A) from 0.5 to 5 wt.% one or more fatty (C₈-C₂₄)-amide-(C₁-C₆)-alkyl betaine emulsifying agents; (B) from 45 to 75 wt%. C₆-C₁₅ alkanol ethoxylated surfactants; (C) from 0.5 to 10 wt% one or more solubilisers based on glycol; and (D) from 5 to 50 wt% one or more C₁-C₄ alkanols; wherein component (B) comprises a mixture of ethoxylates of C₆-C₁₅ alkanols with different carbon number alkanol units and on average from 2 to 5 moles of ethylene oxide per mole of alkanol, wherein the carbon number of two ethoxylates of C₆-C₁₅ alkanols which have the highest proportion in weight of the mixture differ from each other by at least 1.5 carbon numbers, wherein the carbon number and one of the two ethoxylates of C₆-C₁₅ alkanols which have the highest proportion in weight of the mixture is in the range from 9 to 11, and the other - in the range from 12 to 14. Also disclosed is a method for preparing a liquid concentrate and a stable water-in-oil emulsion containing said concentrate.

EFFECT: technical result is to reduce or eliminate formation in a liquid hydrocarbon fuel of ice particles, having a mass median particle size greater than 1 mcm when said liquid hydrocarbon fuel is cooled to a temperature in range of 0 to -50 °C.

10 cl, 10 ex