Method for promoting dialkyldihalosilane formation during direct method alkylhalosilane production
US6258970A · kind A · utility
11Cited by
13References
18Claims
0Family size
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Key dates
| Filing date | May 16, 2000 |
| Grant date | Jul 10, 2001 |
| Priority date | — |
| Expiry date | May 16, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F7/16
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A method is described for enhancing the formation of alkylhalosilane during the direct method reaction between powdered silicon and a catalyst comprising copper, zinc, tin, and phosphorus. An increase in the value of the Cu/Zn weight ratio has been found to promote the performance of the phosphorus-containing catalyst as shown by in an increase in the weight percent dimethyldichlorosilane in methylchlorosilane crude.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.