Patent ID: 7511166

Claim:
A process for the preparation of organylhydrogensilanes, comprising comproportionating a mixture of organylhalosilanes and according to equation (1): Z R a SiCl 4âˆ’a +SiH b Cl 4âˆ’b â†’Z R a SiHCl 3âˆ’a +SiH bâˆ’y Cl 4âˆ’b+y (1) in the presence of a catalyst which contains at least one completely organically substituted ammonium or phosphonium unit, where R is an optionally halogen-substituted alkyl, aryl, or alkaryl radical, a has a value 1, 2 or 3, y and Z have a value 1, 2, 3 or 4, and b has a value 2, 3 or 4.