Redistribution of polysilanes in high boiling residues
US4393229A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 28, 1982 |
| Grant date | Jul 12, 1983 |
| Priority date | — |
| Expiry date | Apr 28, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F7/125
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.