A mixture comprising: a) from 0% to 95% of aromatic compounds and / or polycyclic aromatic compounds, said polycyclic aromatic compounds, if present, always being in an amount less than 10% with respect to component (a); wherein component (a) is selected from: 1,2,3-trimethylbenzene; 1,2,4-trimethylbenzene; 1,3,5-trimethylbenzene; iso-propyl benzene; n-propyl benzene; 3-ethyl-toluene; 2-ethyl-toluene; 4-ethyl-toluene; o-xylene, p-xylene, m-xylene and mixtures of xylenes; Solvesso TM 100; Solvesso TM 150; a mixture of alkylbenzenes; and mixture thereof; b) from 0% to 85% of a mixture containing aliphatic compounds and a content of aromatic compounds lower than 30% with respect to (b), wherein said component (b) is selected from marine diesel oil, decane or dodecane and mixtures thereof; c) from 0% to 20% of an acetate component wherein component (c) is selected from butyl acetate, 2-ethyl hexyl acetate, alkyldiacetates or butyl diglycol acetate and mixtures thereof; d) from 1% to 70% of a mixture of compounds containing keto groups and selected from acetone, acetophenone, cyclohexanone, cyclopentanone, cycloheptanone and mixtures thereof; with the proviso that said solvent mixture contains at least three components, one of which is (d) and the other two selected from (a), (b) or (c) and that their sum is always 100%; and with the proviso that said mixture has a Hildebrand solubility measured with the Hansen parameters, wherein the Hildebrand solubility is calculated with the formula: δ t 2 = δ p 2 + δ h 2 + δ d 2 where δ t is the total Hildebrand solubility parameter, and δ p, δ n, δ d are the Hansen parameters for the mixture, where δ d is the dispersion force component of the solubility, δ p is the polar force component of the solubility and δ h is the strength of the hydrogen bond component of the solubility; wherein the Hansen parameters for the mixture are calculated by weighted average of the corresponding value of each component; characterized in that the dispersion force component of the Hildebrand solubility δ d varies from 17 to 20 Mpa^ 0.5, the polar force component of the Hildebrand solubility δ p varies from 0.65 to 5 Mpa^ 0.5 and the strength of the hydrogen bond component of the Hildebrand solubility δ h varies from 0.65 to 5 MPa ^0.5. a) from 0% to 95% of aromatic compounds and / or polycyclic aromatic compounds, said polycyclic aromatic compounds, if present, always being in an amount less than 10% with respect to component (a); wherein component (a) is selected from: 1,2,3-trimethylbenzene; 1,2,4-trimethylbenzene; 1,3,5-trimethylbenzene; iso-propyl benzene; n-propyl benzene; 3-ethyl-toluene; 2-ethyl-toluene; 4-ethyl-toluene; o-xylene, p-xylene, m-xylene and mixtures of xylenes; Solvesso TM 100; Solvesso TM 150; a mixture of alkylbenzenes; and mixture thereof; b) from 0% to 85% of a mixture containing aliphatic compounds and a content of aromatic compounds lower than 30% with respect to (b), wherein said component (b) is selected from marine diesel oil, decane or dodecane and mixtures thereof; c) from 0% to 20% of an acetate component wherein component (c) is selected from butyl acetate, 2-ethyl hexyl acetate, alkyldiacetates or butyl diglycol acetate and mixtures thereof; d) from 1% to 70% of a mixture of compounds containing keto groups and selected from acetone, acetophenone, cyclohexanone, cyclopentanone, cycloheptanone and mixtures thereof; with the proviso that said solvent mixture contains at least three components, one of which is (d) and the other two selected from (a), (b) or (c) and that their sum is always 100%; and with the proviso that said mixture has a Hildebrand solubility measured with the Hansen parameters, wherein the Hildebrand solubility is calculated with the formula: δ t 2 = δ p 2 + δ h 2 + δ d 2 where δ t is the total Hildebrand solubility parameter, and δ p, δ n, δ d are the Hansen parameters for the mixture, where δ d is the dispersion force component of the solubility, δ p is the polar force component of the solubility and δ h is the strength of the hydrogen bond component of the solubility; wherein the Hansen parameters for the mixture are calculated by weighted average of the corresponding value of each component; characterized in that the dispersion force component of the Hildebrand solubility δ d varies from 17 to 20 Mpa^ 0.5, the polar force component of the Hildebrand solubility δ p varies from 0.65 to 5 Mpa^ 0.5 and the strength of the hydrogen bond component of the Hildebrand solubility δ h varies from 0.65 to 5 MPa ^0.5. where δ t is the total Hildebrand solubility parameter, and δ p, δ n, δ d are the Hansen parameters for the mixture, where δ d is the dispersion force component of the solubility, δ p is the polar force component of the solubility and δ h is the strength of the hydrogen bond component of the solubility; wherein the Hansen parameters for the mixture are calculated by weighted average of the corresponding value of each component; characterized in that the dispersion force component of the Hildebrand solubility δ d varies from 17 to 20 Mpa^ 0.5, the polar force component of the Hildebrand solubility δ p varies from 0.65 to 5 Mpa^ 0.5 and the strength of the hydrogen bond component of the Hildebrand solubility δ h varies from 0.65 to 5 MPa ^0.5.