Patent ID: 6242629
Filing Date: 2001-06-05
Classification: C07F

Abstract:
A process for preparing oganohalosilanes comprising the steps of charging a reactor with a contact mass containing a metallic silicon powder and a copper catalyst, and introducing an organohalide-containing gas into the reactor to effect reaction to form organohalosilanes of formula (1):R.sub.n H.sub.m SiX.sub.4-n-m (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 contact mass further containing a poly(organo)phosphino compound of formula (2): ##STR5##wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 each are a monovalent hydrocarbon group, Y.sup.2 is a divalent organic group, ""a"" is equal to 0 or 1, and ""b"" is an integer of at least 1.