Storable polysiloxane compositions

摘要

Silicone compositions (I) comprise: (a) 100 pts.wt. organopolysiloxane having an OH content (with respect to Si bonded OH groups) of 1-100 ppm) and; (b) 1-200 pts.wt. filler. Independent claims are included for: (1) molded articles produced by cross-linking of the compositions (I) and; (2) a process for the production of linear organopolysiloxanes having terminal triorganosiloxy groups from linear organopolysiloxanes having terminal Si-OH groups and silicon compounds having two triorganosilyl groups and/or two hydrogenoligorganosilyl groups per molecule in the presence of a phosphorous nitride trichloride catalyst by condensation of the linear organopolysiloxane in the presence of the catalysts such that the desired average viscosity is reached and 0.05-1 wt.% hexaorganodisilazanes (with respect to organopolysiloxxane) are added to the mixture containing catalyst and reacted at 155-200 [deg]C.