| abstract |
The invention provides a fuel oil composition F) comprisingn F1) a fuel oil of mineral origin and F2) a fuel oil of vegetable and/or animal origin, and, as a cold additive, the constituents A) at least one copolymer composed of ethylene and 8-21 mol % of at least one acrylic or vinyl ester having a C 1 -C 18 -alkyl radical and B) at least one comb polymer containing structural units having C 8 -C 16 -alkyl radicals, the structural units being selected from C 8 -C 16 -alkyl (meth)acrylates, C 8 -C 16 -alkyl vinyl esters, C 8 -C 16 -alkyl vinyl ethers, C 8 -C 16 -alkyl(meth)acrylamides, C 8 -C 16 -alkyl allyl ethers and C 8 -C 16 -diketenes,n nwhere the sum Rn nn R = m 1 · ∑ i w 1 i · n 1 i + m 2 · ∑ j w 2 j · n 2 j + … + m g · ∑ p w gp · n gp nof the molar averages of the carbon chain length distributions in the alkyl radicals of the monomers B) is from 11.0 to 14.0,n nwheren m 1 , m 2 , . . . m g are the molar fractions of the abovementioned monomers B) in the polymer, and the sum of the molar fractions m 1 to m g =1, w 1i , w 1j . . . w 2i , w 2j . . . w gp are the proportions by weight of the individual chain lengths i, j, p of the alkyl radicals of the different monomers B) 1 to g, and n 1i , n 1j . . . n 2i , n 2j . . . n gp are the chain lengths of the alkyl radicals i, j, . . . p of the monomers B) 1 to g. |