| abstract |
Tetraalkylsilane compounds are produced by contacting an admixture comprising n (A) at least one alkylsilane selected from the group consisting of n (i) a monoalkylsilane having the formula n n R--Si--H.sub.3, n n (ii) a dialkylsilane having the formula n n R--SiH.sub.2 --R.sub.1, n n (iii) a trialkylsilane having the formula n n R--SiH--(R.sub.1).sub.2, n n and mixtures thereof, wherein R and R 1 each represent an alkyl radical of from one to 20 carbon atoms per molecule, and n (B) at least one alpha olefin containing from two to about 20 carbon atoms per molecule, under an inert atmosphere with an oxygenated, platinum-containing catalyst in which the platinum catalyst is selected from the group consisting of (i) a platinum catalyst having a basicity substantially equal to or less than that provided by a platinum-containing catalyst having a triphenylphosphine ligand, or (ii) a heterogeneous platinum-containing catalyst, under hydrosilylation conditions. The platinum-containing catalyst can be oxygenated prior to use in the hydrosilylation process or by interrupting the hydrosilylation process and contacting the catalyst with an oxygen-containing gas prior to resuming the hydrosilylation process. |