Patent ID: 6395917
Filing Date: 2002-05-28
Classification: C07F

Abstract:
A process for preparing oganohalosilanes comprising the steps of charging a reactor with a contact mass containing a metallic silicon powder, a copper catalyst and a co-catalyst, and introducing an organohalide-containing gas into the reactor to effect reaction to form organohalosilanes of the following general formula (1):Rn(H)mSiX(4âˆ’nâˆ’m)â€ƒâ€ƒ(1) wherein R is a monovalent hydrocarbon group of 1 to 6 carbon atoms, X is a halogen atom, n and m each are an integer of 0 to 3, and the sum of n and m is 1 to 3,said process further comprising the steps of mixing particles of the catalyst and/or co-catalyst with finely divided silica, and mechanically applying shear forces to the mixture for mutually rubbing the particles, thereby producing the catalyst and/or co-catalyst having finely divided silica attached to surfaces thereof, which is used in the contact mass.