Polysiloxane obtainable by a method comprising the following steps: (i) providing at least one reaction product of a compound having the formula wherein R 1 may be identical or different and denotes an optionally substituted hydrocarbon radical with 1-18 carbon atoms per radical, A 1 denotes independently of one another a divalent linear or branched group with up to 8 carbon atoms and optionally with up to 4 hetero atoms, x is an integer from 1-1000, preferably 1-500, and Z is optionally substituted by C 1-8 -alkyl, with at least one compound selected from primary amine, secondary amine and monohydric alcohol, which optionally contains at least one polyether radical, wherein at least one reaction product contains at least one polyether radical that was introduced by the compound; (ii) optionally providing at least one compound of the formula wherein R 1 and x are as defined above, R 2 is independently of one another a divalent branched or linear C 2-8 -alkyl, optionally substituted with carbonyl, A 2 independently of one another is selected from the group consisting of - O-, -C -O-, -O-C -,-O-C -O-, -C -NH-, -NH-C -, -NH-C -O- and -NH-C -NH- A 3 independently of one another is selected from the group consisting of - O-, -NH- and -NR'-, R' is a monovalent hydrocarbon radical with 1 to 18 carbon atoms, n independently of one another is an integer from 1 to 20, preferably 2 or 3, and m independently of one another is an integer from 0 to 150, preferably 0 to 70, more preferably 0 to 30; (iii) optionally equilibrating at least one reaction product and/or at least one compound with a cyclic or linear polysiloxane, and (iv) reacting the reaction product or the equilibrated reaction product from step (iii) and optionally the compound or the equilibrated compound from step (iii) with at least one organic compound that has at least two isocyanate groups per molecule. (i) providing at least one reaction product of a compound having the formula wherein R 1 may be identical or different and denotes an optionally substituted hydrocarbon radical with 1-18 carbon atoms per radical, A 1 denotes independently of one another a divalent linear or branched group with up to 8 carbon atoms and optionally with up to 4 hetero atoms, x is an integer from 1-1000, preferably 1-500, and Z is optionally substituted by C 1-8 -alkyl, with at least one compound selected from primary amine, secondary amine and monohydric alcohol, which optionally contains at least one polyether radical, wherein at least one reaction product contains at least one polyether radical that was introduced by the compound; R 1 may be identical or different and denotes an optionally substituted hydrocarbon radical with 1-18 carbon atoms per radical, A 1 denotes independently of one another a divalent linear or branched group with up to 8 carbon atoms and optionally with up to 4 hetero atoms, x is an integer from 1-1000, preferably 1-500, and Z is optionally substituted by C 1-8 -alkyl, with at least one compound selected from primary amine, secondary amine and monohydric alcohol, which optionally contains at least one polyether radical, wherein at least one reaction product contains at least one polyether radical that was introduced by the compound; (ii) optionally providing at least one compound of the formula wherein R 1 and x are as defined above, R 2 is independently of one another a divalent branched or linear C 2-8 -alkyl, optionally substituted with carbonyl, A 2 independently of one another is selected from the group consisting of - O-, -C -O-, -O-C -,-O-C -O-, -C -NH-, -NH-C -, -NH-C -O- and -NH-C -NH- A 3 independently of one another is selected from the group consisting of - O-, -NH- and -NR'-, R' is a monovalent hydrocarbon radical with 1 to 18 carbon atoms, n independently of one another is an integer from 1 to 20, preferably 2 or 3, and m independently of one another is an integer from 0 to 150, preferably 0 to 70, more preferably 0 to 30; R 1 and x are as defined above, R 2 is independently of one another a divalent branched or linear C 2-8 -alkyl, optionally substituted with carbonyl, A 2 independently of one another is selected from the group consisting of - O-, -C -O-, -O-C -,-O-C -O-, -C -NH-, -NH-C -, -NH-C -O- and -NH-C -NH- A 3 independently of one another is selected from the group consisting of - O-, -NH- and -NR'-, R' is a monovalent hydrocarbon radical with 1 to 18 carbon atoms, n independently of one another is an integer from 1 to 20, preferably 2 or 3, and m independently of one another is an integer from 0 to 150, preferably 0 to 70, more preferably 0 to 30; (iii) optionally equilibrating at least one reaction product and/or at least one compound with a cyclic or linear polysiloxane, and (iv) reacting the reaction product or the equilibrated reaction product from step (iii) and optionally the compound or the equilibrated compound from step (iii) with at least one organic compound that has at least two isocyanate groups per molecule.