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AssigneeGeneral Electric Company
InventorsAlan Ritzer, Abraham L. Hajjar, Harry R. McEntee, Ray W. Shade
Estimating the term…
A process is described for converting the alkyl-rich disilanes in the residue obtained from the manufacture of alkylhalosilanes to halogen-rich polysilanes with alkyltrihalosilanes and simultaneously converting the alkyltrihalosilanes to dialkyldihalosilanes by reacting the alkyl-rich polysilanes in the residue and the alkyltrihalosilanes at an elevated temperature in the presence of a suitable catalyst and a catalytic amount of a hydrosilane reaction promoter. In a preferred embodiment, the residue containing alkyl-rich disilanes is treated with methyltrichlorosilane at a temperature of about 100.degree. C. to about 250.degree. C. in the presence of aluminum trichloride catalyst and a catalytic amount of methyldichlorosilane.
A process for treating alkyl-rich disilane-containing residues, comprising contacting the residue with alkyltrihalosilane or silicon tetrahalide in the presence of a catalyst and a catalytic amount of a hydrosilane reaction promoter at an elevated temperature to produce a redistribution product containing halogen-rich disilanes and dialkyldihalosilane.
A process for converting an alkyl-rich polysilane in the residue obtained from the manufacture of alkylhalosilane to halogen-rich polysilane with alkyltrihalosilane and simultaneously converting the alkyltrihalosilane to dialkyldihalosilane under substantially anhydrous conditions, comprising reacting the alkyl-rich polysilane in the residue and the alkyltrihalosilane at an elevated temperature in the presence of a suitable catalyst and a catalytic amount of a hydrosilane reaction promoter.
A process for converting alkyl-rich disilanes in the high boiling residue obtained from the manufacture of methylchlorosilanes to halogen-rich disilanes by a redistribution with methyltrichlorosilane and simultaneously converting the methyltrichlorosilane to dimethyldichlorosilane, comprising reacting the alkyl-rich disilanes in the residue under substantially anhydrous conditions at a temperature of about 100.degree. C. to about 175.degree. C. in the presence of a catalyst selected from the group consisting of aluminum trichloride, boron trifluoride, zirconium tetrachloride, boric acid, potassium aluminum tetrachloride and cuprous chloride, and a catalytic amount of a hydrosilane reaction promoter selected from the group consisting of methyldichlorosilane, dimethylchlorosilane, phenyldichlorosilane, trichlorosilane, dichlorosilane, monochlorosilane and trimethylsilane.
Dependencies are inferred from the claim text.