Process for manufacturing an aqueous polyurethane dispersion, the process comprising: forming an NCO-terminated polyurethane prepolymer from a reaction mixture comprising: (a) at least one polyol with a number average molecular weight M n in the range of 400 to 10000 g/mol, preferably 500 g/mol to 4000 g/mol, more preferably 1000 g/mol to 3000 g/mol, wherein said at least one polyol comprises at least one partially hydrogenated polybutadiene polyol, wherein the hydrogenation rate of the partially hydrogenated polybutadiene polyols is at least 95%; (b) optionally at least one modified polyether polyol, preferably a halogenated polyether polyol; (c) at least one anionic stabilizer, wherein the at least one anionic stabilizer comprises at least two hydroxyl groups and at least one negatively charged functional group, preferably a carboxyl or sulfonic acid group; (d) at least two aliphatic polyisocyanates, preferably at least two aliphatic di- and/or triisocyanates, wherein the at least two aliphatic polyisocyanates comprise at least one linear aliphatic polyisocyanate and at least one branched aliphatic polyisocyanate, and wherein the polyisocyanates are used in a total amount resulting in a molar excess of isocyanato groups relative to the hydroxy groups of the other components of the reaction mixture to obtain an NCO-terminated polyurethane prepolymer; dispersing the prepolymer into a continuous aqueous phase under application of shear forces, preferably by mechanical stirring, to obtain an emulsion; reacting the prepolymer with at least one chain extension agent to obtain an aqueous polyurethane dispersion; and blending the aqueous polyurethane dispersion with a non-polar adhesion promoter selected from the group consisting of (modified) polyolefins, polyacrylic resins and rosin-based resins, preferably maleated polyolefins. forming an NCO-terminated polyurethane prepolymer from a reaction mixture comprising: (a) at least one polyol with a number average molecular weight M n in the range of 400 to 10000 g/mol, preferably 500 g/mol to 4000 g/mol, more preferably 1000 g/mol to 3000 g/mol, wherein said at least one polyol comprises at least one partially hydrogenated polybutadiene polyol, wherein the hydrogenation rate of the partially hydrogenated polybutadiene polyols is at least 95%; (b) optionally at least one modified polyether polyol, preferably a halogenated polyether polyol; (c) at least one anionic stabilizer, wherein the at least one anionic stabilizer comprises at least two hydroxyl groups and at least one negatively charged functional group, preferably a carboxyl or sulfonic acid group; (d) at least two aliphatic polyisocyanates, preferably at least two aliphatic di- and/or triisocyanates, wherein the at least two aliphatic polyisocyanates comprise at least one linear aliphatic polyisocyanate and at least one branched aliphatic polyisocyanate, and wherein the polyisocyanates are used in a total amount resulting in a molar excess of isocyanato groups relative to the hydroxy groups of the other components of the reaction mixture to obtain an NCO-terminated polyurethane prepolymer; (a) at least one polyol with a number average molecular weight M n in the range of 400 to 10000 g/mol, preferably 500 g/mol to 4000 g/mol, more preferably 1000 g/mol to 3000 g/mol, wherein said at least one polyol comprises at least one partially hydrogenated polybutadiene polyol, wherein the hydrogenation rate of the partially hydrogenated polybutadiene polyols is at least 95%; (b) optionally at least one modified polyether polyol, preferably a halogenated polyether polyol; (c) at least one anionic stabilizer, wherein the at least one anionic stabilizer comprises at least two hydroxyl groups and at least one negatively charged functional group, preferably a carboxyl or sulfonic acid group; (d) at least two aliphatic polyisocyanates, preferably at least two aliphatic di- and/or triisocyanates, wherein the at least two aliphatic polyisocyanates comprise at least one linear aliphatic polyisocyanate and at least one branched aliphatic polyisocyanate, and wherein the polyisocyanates are used in a total amount resulting in a molar excess of isocyanato groups relative to the hydroxy groups of the other components of the reaction mixture to obtain an NCO-terminated polyurethane prepolymer; dispersing the prepolymer into a continuous aqueous phase under application of shear forces, preferably by mechanical stirring, to obtain an emulsion; reacting the prepolymer with at least one chain extension agent to obtain an aqueous polyurethane dispersion; and blending the aqueous polyurethane dispersion with a non-polar adhesion promoter selected from the group consisting of (modified) polyolefins, polyacrylic resins and rosin-based resins, preferably maleated polyolefins.