Two-component composition comprising a) a first component A comprising at least one polymer P obtained by the reaction of m equivalents of a secondary aminosilane endcapper E according to formula with one equivalent of an isocyanate-functional polyurethane polymer PUR having m isocyanate groups, wherein radical R 1 represents a linear or branched monovalent hydrocarbon radical having 1 to 5 carbon atoms and which optionally contains one or more C-C-multiple bonds, and/or cycloaliphatic, and/or aromatic moieties; radical R 2 represents an acyl radical or a linear or branched monovalent hydrocarbon radical having 1 to 5 carbon atoms and which optionally contains one or more C-C-multiple bonds, and/or cycloaliphatic, and/or aromatic moieties; radical R 7 represents a linear or branched monovalent hydrocarbon radical having 1 to 20 carbon atoms and which optionally contains one or more heteroatoms and/or C-C-multiple bonds, and/or cycloaliphatic, and/or aromatic moieties; X represents a linear or branched monovalent hydrocarbon radical having 1 to 6 carbon atoms and which optionally contains one or more heteroatoms and optionally one or more C-C-multiple bonds, and/or cycloaliphatic, and/or aromatic moieties; m stands for a value of 1 to 4, preferably 2 or 3; and b) a second component B comprising a catalyst system for catalyzing hydrolysis and/or condensation of silanes; wherein component A and component B are produced and stored separately and preferably mixed shortly prior to application, and wherein said secondary aminosilane endcapper E is obtained by the reaction of an aminosilane AS according to formula with a Michael acceptor M according to formula or (IIIa) wherein radical R 3 and radical R 5 both represent an alkyl carboxylate group, preferably a methyl or ethyl carboxylate group; radical R 4 represents a hydrogen radical or a radical selected from the group -R 6, -COOR 6, -CN, or -NO 2; radical R 6 represents a linear or branched monovalent hydrocarbon radical having 1 to 20 carbon atoms. a) a first component A comprising at least one polymer P obtained by the reaction of m equivalents of a secondary aminosilane endcapper E according to formula with one equivalent of an isocyanate-functional polyurethane polymer PUR having m isocyanate groups, wherein radical R 1 represents a linear or branched monovalent hydrocarbon radical having 1 to 5 carbon atoms and which optionally contains one or more C-C-multiple bonds, and/or cycloaliphatic, and/or aromatic moieties; radical R 2 represents an acyl radical or a linear or branched monovalent hydrocarbon radical having 1 to 5 carbon atoms and which optionally contains one or more C-C-multiple bonds, and/or cycloaliphatic, and/or aromatic moieties; radical R 7 represents a linear or branched monovalent hydrocarbon radical having 1 to 20 carbon atoms and which optionally contains one or more heteroatoms and/or C-C-multiple bonds, and/or cycloaliphatic, and/or aromatic moieties; X represents a linear or branched monovalent hydrocarbon radical having 1 to 6 carbon atoms and which optionally contains one or more heteroatoms and optionally one or more C-C-multiple bonds, and/or cycloaliphatic, and/or aromatic moieties; m stands for a value of 1 to 4, preferably 2 or 3; and b) a second component B comprising a catalyst system for catalyzing hydrolysis and/or condensation of silanes;