Cold flow improver compositions in low-naphthalene solvent naphtha

1 . A composition comprising

A) Solvent Naphtha having a naphthalene content of less than 1% by weight,

B) a middle distillate cold flow improver and

C) a solubilizing additive selected from the group consisting of aliphatic C 1 - to C 22 -alcohols, alicyclic C 1 - to C 22 -alcohols, cycloaliphatic hydrocarbons monocyclic aromatic hydrocarbons, and mixtures thereof.

2 . The composition as claimed in claim 1 , wherein constituent C) is a monohydric alcohol.

3 . The composition of claim 1 , wherein constituent C) is selected from the group consisting of methanol, ethanol, 2-ethylhexanol, cyclohexanol, and mixtures thereof.

4 . The composition as claimed in claim 1 , wherein constituent C) is a mono- or polycyclic hydrocarbon, or mixtures thereof having from 6 to 12 carbon atoms.

5 . The composition as claimed in claim 4 , wherein constituent C) is selected from the group consisting of cyclohexane, norbornane, norbornene, and mixtures thereof.

6 . The composition as claimed in claim 1 , wherein constituent C) is selected from the group consisting of an isomeric nonylphenol, a hydroxybenzenes, a salicylaldehyde, and mixtures thereof.

7 . The composition of claim 1 , wherein constituent B) is a polymer having from 10 to 40% by weight of vinyl acetate and from 60 to 90% by weight of ethylene.

8 . The composition of claim 1 , wherein constituent B) is selected from the group consisting of an ethylene/vinyl acetate/vinyl 2-ethylhexanoate terpolymer, ethylene/vinyl acetate/vinyl neononanoate terpolymer, ethylene/vinyl acetate/vinyl neodecanoate terpolymer, and mixtures thereof.

9 . The composition of claim 1 , wherein constituent B) is a copolymer which comprises ethylene and from 10 to 40% by weight of vinyl acetate or from 1 to 40% by weight of long-chain vinyl esters, and further comprises from 0.5 to 20% by weight of olefin having from 3 to 10 carbon atoms.

10 . The composition of claim 1 , where constituent B is a salt selected from the group consisting of an amine salt, an imide salt, an amide salt, and mixtures thereof, wherein said salt is composed of a secondary fatty amine having from 8 to 36 carbon atoms.

11 . The composition of claim 1 , wherein the naphthalene content of constituent A) is at most 0.1% by weight.

12 . The composition of claim 1 , where constituent A) has an aromatics content of more than 90% by weight.

13 . A method for improving the cold flow properties of a fuel selected from the group consisting of a middle distillate, a biofuel oil, and mixtures thereof, said method comprising adding to the fuel an additive comprising:

a) solvent naphtha having a naphthalene content of less than 1% by weight, and,

b) a solubilizing additive selected from the group consisting of a C 1 - to C 22 aliphatic alcohol, a C 1 - to C 22 alicyclic alcohol, a cycloaliphatic hydrocarbon, a monocyclic aromatic hydrocarbon, and mixtures thereof.

14 . The composition of claim 9 , wherein the long-chain vinyl esters comprise 8 or more carbon atoms per molecule.