Selective production of dimethyldichlorosilane
US4684741A · kind A · utility
6Cited by
3References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 24, 1986 |
| Grant date | Aug 4, 1987 |
| Priority date | — |
| Expiry date | Feb 24, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F7/16
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Dimethyldichlorosilane is selectively and efficiently prepared by reacting methyl chloride with a solid contact mass comprising silicon and a catalytically effective amount of copper or a copper compound, said copper catalyst comprising (i) from about 10 to 1000 ppm of tin, antimony, or admixture thereof, or of a tin or antimony compound, or admixture thereof, (ii) from about 0.01 to 2% by weight of at least one of the metallic additives beryllium, calcium and magnesium, or compound thereof, and, optionally, (iii) from about 0.01 to 3% by weight of zinc or a zinc compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.