| abstract |
Diorganopolysiloxanes containing triorganosiloxy groups as terminal units are prepared by mixing the diorganopolysiloxanes which may already contain triorganosiloxy terminal groups, after they have reached the desired average viscosity by condensation and/or equilibration in the presence of catalysts other than chlorophosphazenes, with a hexaorganodisilazane in an amount of from 0.05 to 2 percent by weight, based on the weight of the diorganopolysiloxanes employed and after mixing, a catalytic amount of a chlorophosphazene is added. |