A process for preparing amino-functional organopolysiloxanes comprising (i) mixing aminosilanes of the general formula
R
aQ
bSi(OR
1)
4−(a+b),
- where R and R1 are hydrogen or optionally substituted hydrocarbyl, a is 0, 1 or 2, b is 1, 2 or 3, and a+b is ≦3,
- Q is —R5—[NR6(CH2)n]eN(R6)2,
- where R5 is a hydrocarbyl diradical and R6 is hydrogen, hydrocarbyl, or acyl, e is 0, 1, 2, 3 or 4, n is 2, 3, 4, 5 or 6,
with organosilicon compounds selected from siloxanes comprising units
or silanes RcSi(OR1)4−c, where c is 0, 1, 2 or 3, d is 0, 1 or 2, f is 1, 2 or 3, with the proviso that d+f is ≦3, basic catalysts selected from alkali metal hydroxides, alcoholates and siloxanolates, and optionally, alcohols H—[O(CHR2)p]mOR3, where R2 and R3 are hydrogen or hydrocarbyl, p is 2, 3 or 4, and m is 0 or an integer from 1 to 100, (ii) reacting by heating to 70-100° C., and (iii) subsequently, neutralizing the basic catalysts by addition of neutralizing agents which form salts which are soluble in the amino-functional organopolysiloxanes thus obtained.