Patent ID: 8637695
Filing Date: 2014-01-28
Classification: B01J,C07F

Abstract:
1. A catalytic process for producing an organohalosilane monomer composition from a high-boiling residue, said process comprising (A) heating the high-boiling residue in the presence of a catalyst comprising (1) one or more heterocyclic amines and/or one or more heterocyclic ammonium halides, and (2) one or more quaternary Group 15 onium compounds, optionally in the presence of an organohalide and/or a hydrogen halide and/or an inert gas, at a temperature within the range of about 75° C. to about 300° C. under atmospheric pressure or superatmospheric pressure to convert the high-boiling residue to an organohalosilane monomer composition containing at least one organohalosilane monomer having a general formula selected from the group consisting of R (B) optionally recovering the catalyst, wherein the high-boiling residue comprises (1) an uncleavable component containing at least one of tetraorganodihalodisilanes and optionally one or more compounds selected from carbosilanes, organohalopolysilanes, hexaorganodisilanes, and pentaorganohalodisilanes; and (2) optionally a cleavable component containing at least one of diorganotetrahalodisilanes and triorganotrihalodisilanes with the proviso that if present, the cleavable component has a concentration less than that of the uncleavable component; and wherein the quaternary Group 15 onium compound is of the general formula, R