Method for promoting dialkyldihalosilane formation during direct method alkylhalosilane production
US6423860B1 · kind B1 · utility
4Cited by
13References
21Claims
0Family size
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Key dates
| Filing date | Sep 5, 2000 |
| Grant date | Jul 23, 2002 |
| Priority date | — |
| Expiry date | Sep 5, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F7/16
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Dialkyldihalosilane formation during direct method alkylhalosilane production is promoted by effecting reaction between alkyl halide and powdered silicon in the presence of a catalyst comprising copper, zinc, and aluminum and further comprising an amount of phosphorus and tin wherein the amount of phosphorus and tin substantially enhances the selectivity of dialkyldihalosilane formation in comparison to the selectivity of dialkyldihalosilane formation in the presence of the catalyst comprising copper, zinc, aluminum and tin without phosphorus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.