Patent ID: 7473284

Claim:
A fuel oil composition F) comprising 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 comonomer of acrylic or vinyl ester having a C 1 -C 18 -alkyl radical and B) at least one comb polymer containing structural units of monomers having C 8 -C 16 -alkyl radicals, the monomers being selected from the group consisting of 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, C 8 -C 16 -diketenes, and mixtures thereof, where the sum R 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 of molar averages of carbon chain length distributions in the C 8 -C 16 -alkyl radicals of the monomers of comb polymer B) is from 11.0 to 14.0, where m 1 , m 2 , . . . m g are molar fractions of the monomers of comb polymer 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 individual carbon chain lengths i, j, p of the C 8 -C 16 -alkyl radicals of the different monomers of comb polymer B) 1 to g, and n 1i , n 1j , n 2i , n 2j . . . n gp are the chain lengths of the C 8 -C 16 -alkyl radicals i, j, . . . p of the monomers of comb polymer B) 1 to g.