| abstract |
A curable organosilicon composition comprising annalkenyl functional organopolysiloxane having at least twonsilicon-bonded groups with aliphatic unsaturation, a preciousnmetal based hydrosilation catalyst and a hydrosiloxanencrosslinker having at least three silicon-bonded hydrogennatoms per molecule, which has at least one trivalent siloxanenunit per molecule, at most 40% of all monovalent siloxanenunits, at least 40% of divalent siloxane units, at least 50%nof all siloxane units of the crosslinker with a silicon-bondednhydrogen, and of the total number of siloxane unitsnpresent in the total amount of hydrosiloxane crosslinkers innthe composition at least 0.75% trivalent siloxane units.nThese compositions provide improved anchorage to a range ofnsubstrates. |