Isocyanate-reactive component A) containing the following components: A1) a polyol formulation comprising 50-80% by weight of a polyol component a1) consisting of one or more polyols selected from polyester polyols, polycarbonate polyols or polyether ester polyols having a hydroxyl number of 100 to 300 mg KOH/g and an average functionality of 1.5 to 2.5, wherein the polyol component a1) comprises at least one aromatic or aromatic/aliphatic polyester polyol or polyether ester polyol, 0-5% by weight of a polyol component a2) consisting of one or more polyols selected from polyester polyols and polyether ester polyols having a hydroxyl number of 320 to 450 mg KOH/g and an average functionality of 3 to 4.5, wherein the polyol component a2) comprises at least one aromatic or an aromatic/aliphatic polyester polyol or polyether ester polyol, 8.0-12.0% by weight of a polyol component a3) consisting of one or more polyols selected from polyether polyols having an OH number of 10 to 80 mg KOH/g and an average functionality of ≥ 2.0 to ≤ 3.0 produced by alkoxylation of a suitable starter component with a mixture of ethylene oxide and propylene oxide having an EO content of 15-70% by weight based on the total amount of EO and PO, 0.0-7.5% by weight of a polyol component a4) consisting of one or more polyols selected from polyether polyols having an OH number in the range of 350-500 mg KOH/g produced by alkoxylation of an aromatic amine with at least one alkylene oxide, 0.0-3.0% by weight of a polyol component a5) consisting of one or more polyols selected from polyester polyols having an OH number in the range of 600-900 mg KOH/g, in particular of 750-850 mg KOH/g; A2) 0-5% by weight of low molecular weight isocyanate-reactive compounds and A3) optionally catalysts, A4) optionally auxiliary and additive substances, A5) 0-1.5% by weight of water and A6) 0-7.5% by weight (especially preferably 0-5% by weight) of castor oil, wherein all percentages by weight are in each case based on the total weight of A. A1) a polyol formulation comprising 50-80% by weight of a polyol component a1) consisting of one or more polyols selected from polyester polyols, polycarbonate polyols or polyether ester polyols having a hydroxyl number of 100 to 300 mg KOH/g and an average functionality of 1.5 to 2.5, wherein the polyol component a1) comprises at least one aromatic or aromatic/aliphatic polyester polyol or polyether ester polyol, 0-5% by weight of a polyol component a2) consisting of one or more polyols selected from polyester polyols and polyether ester polyols having a hydroxyl number of 320 to 450 mg KOH/g and an average functionality of 3 to 4.5, wherein the polyol component a2) comprises at least one aromatic or an aromatic/aliphatic polyester polyol or polyether ester polyol, 8.0-12.0% by weight of a polyol component a3) consisting of one or more polyols selected from polyether polyols having an OH number of 10 to 80 mg KOH/g and an average functionality of ≥ 2.0 to ≤ 3.0 produced by alkoxylation of a suitable starter component with a mixture of ethylene oxide and propylene oxide having an EO content of 15-70% by weight based on the total amount of EO and PO, 0.0-7.5% by weight of a polyol component a4) consisting of one or more polyols selected from polyether polyols having an OH number in the range of 350-500 mg KOH/g produced by alkoxylation of an aromatic amine with at least one alkylene oxide, 0.0-3.0% by weight of a polyol component a5) consisting of one or more polyols selected from polyester polyols having an OH number in the range of 600-900 mg KOH/g, in particular of 750-850 mg KOH/g; 50-80% by weight of a polyol component a1) consisting of one or more polyols selected from polyester polyols, polycarbonate polyols or polyether ester polyols having a hydroxyl number of 100 to 300 mg KOH/g and an average functionality of 1.5 to 2.5, wherein the polyol component a1) comprises at least one aromatic or aromatic/aliphatic polyester polyol or polyether ester polyol, 0-5% by weight of a polyol component a2) consisting of one or more polyols selected from polyester polyols and polyether ester polyols having a hydroxyl number of 320 to 450 mg KOH/g and an average functionality of 3 to 4.5, wherein the polyol component a2) comprises at least one aromatic or an aromatic/aliphatic polyester polyol or polyether ester polyol, 8.0-12.0% by weight of a polyol component a3) consisting of one or more polyols selected from polyether polyols having an OH number of 10 to 80 mg KOH/g and an average functionality of ≥ 2.0 to ≤ 3.0 produced by alkoxylation of a suitable starter component with a mixture of ethylene oxide and propylene oxide having an EO content of 15-70% by weight based on the total amount of EO and PO, 0.0-7.5% by weight of a polyol component a4) consisting of one or more polyols selected from polyether polyols having an OH number in the range of 350-500 mg KOH/g produced by alkoxylation of an aromatic amine with at least one alkylene oxide, 0.0-3.0% by weight of a polyol component a5) consisting of one or more polyols selected from polyester polyols having an OH number in the range of 600-900 mg KOH/g, in particular of 750-850 mg KOH/g; A2) 0-5% by weight of low molecular weight isocyanate-reactive compounds and A3) optionally catalysts, A4) optionally auxiliary and additive substances, A5) 0-1.5% by weight of water and A6) 0-7.5% by weight (especially preferably 0-5% by weight) of castor oil, wherein all percentages by weight are in each case based on the total weight of A.