Method for preparing siloxanes having oxamidoester groups by reacting (A) silanes of the general formula optionally (B) silanes of the general formula R 4 t(R 5 O) 4-t Si (III) and (W) water, where R 1 may independently be identical or different and represents monovalent, optionally substituted, SiC-bonded hydrocarbon radicals that may be interrupted by heteroatoms, R 2 may independently be identical or different and represents a hydrogen atom or monovalent, optionally substituted hydrocarbon radicals that may be interrupted by heteroatoms, R 3 represents monovalent, optionally substituted hydrocarbon radicals that may be interrupted by oxygen atoms, R x represents a hydrogen atom or optionally substituted hydrocarbon radicals, Y represents divalent, optionally substituted hydrocarbon radicals that may be interrupted by oxygen atoms or nitrogen atoms, R 4 may independently be identical or different and represents monovalent, optionally substituted, SiC-bonded hydrocarbon radicals that may be interrupted by heteroatoms, R 5 may independently be identical or different and represents a hydrogen atom or monovalent, optionally substituted hydrocarbon radicals that may be interrupted by heteroatoms, s is 0, 1 or 2 and t is 0, 1, 2 or 3. (A) silanes of the general formula optionally (B) silanes of the general formula R 4 t(R 5 O) 4-t Si (III) and (W) water, where R 1 may independently be identical or different and represents monovalent, optionally substituted, SiC-bonded hydrocarbon radicals that may be interrupted by heteroatoms, R 2 may independently be identical or different and represents a hydrogen atom or monovalent, optionally substituted hydrocarbon radicals that may be interrupted by heteroatoms, R 3 represents monovalent, optionally substituted hydrocarbon radicals that may be interrupted by oxygen atoms, R x represents a hydrogen atom or optionally substituted hydrocarbon radicals, Y represents divalent, optionally substituted hydrocarbon radicals that may be interrupted by oxygen atoms or nitrogen atoms, R 4 may independently be identical or different and represents monovalent, optionally substituted, SiC-bonded hydrocarbon radicals that may be interrupted by heteroatoms, R 5 may independently be identical or different and represents a hydrogen atom or monovalent, optionally substituted hydrocarbon radicals that may be interrupted by heteroatoms, s is 0, 1 or 2 and t is 0, 1, 2 or 3. R 1 may independently be identical or different and represents monovalent, optionally substituted, SiC-bonded hydrocarbon radicals that may be interrupted by heteroatoms, R 2 may independently be identical or different and represents a hydrogen atom or monovalent, optionally substituted hydrocarbon radicals that may be interrupted by heteroatoms, R 3 represents monovalent, optionally substituted hydrocarbon radicals that may be interrupted by oxygen atoms, R x represents a hydrogen atom or optionally substituted hydrocarbon radicals, Y represents divalent, optionally substituted hydrocarbon radicals that may be interrupted by oxygen atoms or nitrogen atoms, R 4 may independently be identical or different and represents monovalent, optionally substituted, SiC-bonded hydrocarbon radicals that may be interrupted by heteroatoms, R 5 may independently be identical or different and represents a hydrogen atom or monovalent, optionally substituted hydrocarbon radicals that may be interrupted by heteroatoms, s is 0, 1 or 2 and t is 0, 1, 2 or 3. <EOS>