Patent ID: 7815697

Claim:
A fuel oil composition F) comprising F1) a fuel oil of mineral origin and F2) a fuel oil of vegetable or animal origin, and a cold additive comprising the constituents A) at least one copolymer composed of ethylene and 8-21 mol % of a comonomer 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 composed of B1) at least one olefin as monomer 1 which bears at least one C 8 -C 18 alkyl radical on the olefinic double bond, and B2) at least one ethylenically unsaturated dicarboxylic acid as monomer 2 which bears at least one C 8 -C 16 alkyl radical bonded via an amide or imide moiety, where the sum Q Q = ∑ i ⁢ w 1 ⁢ i · n 1 ⁢ i + ∑ j ⁢ w 2 ⁢ j · n 2 ⁢ j of molar averages of the carbon chain length distributions in the alkyl radical of monomer 1 on the one hand and the alkyl radical of the amide or imide moiety of monomer 2 on the other is from 21.0 to 28.0, where w 1 is a molar proportion of the individual chain lengths in the alkyl radicals of monomer 1, w 2 is a molar proportion of the individual chain lengths in the alkyl radical of the amide or imide moiety of monomer 2, n 1 are individual chain lengths in the alkyl radical of monomer 1, n 2 are individual chain lengths in the alkyl radical of the amide or imide moiety of monomer 2, i is a serial variable for the individual chain lengths in the alkyl radical of monomer 1, and j is a serial variable for the individual chain lengths in the alkyl radical of the amide and/or imide moiety of monomer 2.