Patent ID: 8367854

Claim:
A process for preparing oligoaminosilanes of the general formula (I) Si n Y 2n+2 (I), in which an oligohalosilane of the general formula (II) Si n X 2n+2 (II) is reacted with a primary amine of the general formula (III) R—NH 2 (III) in a reaction mixture in hydrocarbons as a solvent, where X is selected from chlorine, bromine and iodine, Y is halogen, hydrogen or R—NH, R is a hydrocarbyl radical having 1 to 20 carbon atoms, and n has values of 1 to 20, with the proviso that at most 35 mol % of Y radicals are hydrogen and at most 15 mol % of the Y radicals are halogen, wherein activated carbon is added to the reaction mixture.