Tin containing activated silicon for the direct reaction
US4864044A · kind A · utility
20Cited by
12References
8Claims
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Key dates
| Filing date | Feb 15, 1985 |
| Grant date | Sep 5, 1989 |
| Priority date | — |
| Expiry date | Feb 15, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F7/16
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
An improved Direct Reaction process which comprises reacting an organohalide with an activated silicon composition, the improvement comprising maintaining the composition of the activated silicon so that it comprises, based on the amount of silicon, 0.05-10 wt. % catalyst; an effective amount of promoter, and 0.001-0.1 wt. % tin, wherein the promoter to tin ratio is 10-250. Activated silicon compositions and methods for selecting a catalyst composition also are provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.