antixidant additive composition, a solution based on said antixidant additive composition and a method for enhancing the stability of biodiesel fuel storage variants

摘要

ADDITIVE ANTIOXIDANT COMPOSITION, A SOLUTION BASED ON SUCH ANTIOXIDANT ADDITIVE COMPOSITION AND A METHOD FOR IMPROVING BIODIESEL STORAGE STABILITY (VARIANT), the present invention relates specifically to the petrochemical stability, a storage method biodiesel fuel through the use of an antioxidant additive; A method for enhancing the storage stability of biodiesel fuel comprising the addition of an alkylphenol-based antioxidant additive providing an initial solution containing from 6 to 48 mass% of the alkylphenol-based composition comprising mass%: 2,6-di-tert-butyl-4-methylcycloexanone - 0.2 to 0.3 2,6-di-tert-butylphenol - 0.7 to 6.0 2-sec-6-tert-butyl-p- cresol - 1.5 to 5.0 4,6-di-tert-butyl-o-cresol - 3.0 to 8.0 2,4-di-tert-butylphenol - 0.3 to 0.5 2.4 -di-tert-butyl-6-dimethylaminomethylphenol - 2.0 to 5.0 4,4-methylene-bis (2,6-di-tert-butylphenol) - 0.1 to 0.3 and 2,6-di -tert-butyl-4-methylphenol - for balance, dissolved in biodiesel fuel and adding the composition solution to the biodiesel fuel to give a concentration of 0.002 to 1.6 mass% based on the biodiesel fuel solution; The technical result is a considerable improvement in the storage stability of biodiesel fuel with a reduced amount of antioxidant additive. The antioxidant additive used inhibits precipitation over the lifetime of the biodiesel fuel over a longer buffer period.