Mixtures of organosiloxanes of the general formula M m D n T o Q p, in which M is a terminal group of the general formula (Ia) R 1 R 2 R 3 SiO 1/2 (Ia), D is a difunctional group of the general formula (Ib) R 4 R 5 SiO 2/2 (Ib), T is a trifunctional group of the general formula (Ic) R 6 SiO 3/2 (Ic), Q is a unit of the general formula SiO 4/2, where R 1, R 2, R 3, R 4, R 5 and R 6 independently of one another stand for a hydrocarbon radical having 1 to 20 C atoms, which may contain heteroatoms, or stand for the hydroxyl radical or alkoxy radicals having 1 to 10 C atoms, where at least one hydrocarbon radical R 6 contains at least one amine function, and not more than 25% of all of the radicals are hydroxyl or alkoxy radicals, m is an integer 0-20, n is an integer 0-1000, o is an integer 1-30, p is an integer 0-20, and m + n + o + p is an integer which is at least 2, with epoxides of the general formula (A-B)qC in which A independently at each occurrence is a monovalent linear or branched hydrocarbon radical having 1 to 30 C atoms, which may be substituted by heteroatoms, which may be interrupted by heteroatoms, and which may contain one or more epoxy function, B independently at each occurrence is a divalent ether, carbonate, or urea function or is an acid, ester, urethane, acid-anhydride, or amide function of a carboxylic acid, thiocarboxylic acid, sulfonic acid, phosphonic acid, or phosphoric acid, q is a number from 1 to 8, C is a q -valent linear or branched hydrocarbon radical having one to 30 C atoms, which may contain heteroatoms, and which may contain one or more epoxy functions, with the proviso that the compound of the general formula comprises at least one epoxy function. M is a terminal group of the general formula (Ia) R 1 R 2 R 3 SiO 1/2 (Ia), D is a difunctional group of the general formula (Ib) R 4 R 5 SiO 2/2 (Ib), T is a trifunctional group of the general formula (Ic) R 6 SiO 3/2 (Ic), Q is a unit of the general formula SiO 4/2, where R 1, R 2, R 3, R 4, R 5 and R 6 independently of one another stand for a hydrocarbon radical having 1 to 20 C atoms, which may contain heteroatoms, or stand for the hydroxyl radical or alkoxy radicals having 1 to 10 C atoms, where at least one hydrocarbon radical R 6 contains at least one amine function, and not more than 25% of all of the radicals are hydroxyl or alkoxy radicals, m is an integer 0-20, n is an integer 0-1000, o is an integer 1-30, p is an integer 0-20, and m + n + o + p is an integer which is at least 2, with epoxides of the general formula (A-B)qC in which A independently at each occurrence is a monovalent linear or branched hydrocarbon radical having 1 to 30 C atoms, which may be substituted by heteroatoms, which may be interrupted by heteroatoms, and which may contain one or more epoxy function, B independently at each occurrence is a divalent ether, carbonate, or urea function or is an acid, ester, urethane, acid-anhydride, or amide function of a carboxylic acid, thiocarboxylic acid, sulfonic acid, phosphonic acid, or phosphoric acid, q is a number from 1 to 8, C is a q -valent linear or branched hydrocarbon radical having one to 30 C atoms, which may contain heteroatoms, and which may contain one or more epoxy functions, with the proviso that the compound of the general formula comprises at least one epoxy function. A independently at each occurrence is a monovalent linear or branched hydrocarbon radical having 1 to 30 C atoms, which may be substituted by heteroatoms, which may be interrupted by heteroatoms, and which may contain one or more epoxy function, B independently at each occurrence is a divalent ether, carbonate, or urea function or is an acid, ester, urethane, acid-anhydride, or amide function of a carboxylic acid, thiocarboxylic acid, sulfonic acid, phosphonic acid, or phosphoric acid, q is a number from 1 to 8, C is a q -valent linear or branched hydrocarbon radical having one to 30 C atoms, which may contain heteroatoms, and which may contain one or more epoxy functions, with the proviso that the compound of the general formula comprises at least one epoxy function.