Method for improving selectivity for dialkyldichlorosilane
US6407276B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2001 |
| Grant date | Jun 18, 2002 |
| Priority date | — |
| Expiry date | Mar 29, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F7/16
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A method for forming a dialkyldichlorosilane, comprising reacting elemental silicon with an alkyl chloride using copper as a catalyst together with promoters zinc, tin, and a special promoter. The special promoter is silver, a silver compound, gold, a gold compound, or combinations thereof. The alkyl may be methyl such that the dialkyldichlorosilane is dimethyldichlorosilane and the alkyl chloride is methyl chloride. The reacting generates the dialkyldichlorosilane in accordance with a first selectivity for the dialkyldichlorosilane that exceeds a second selectivity for the dialkyldichlorosilane. The second selectivity is a selectivity for the dialkyldichlorosilane that would have existed had the special promoter been absent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.