Preparation of polyorganosilanes
US5159043A · kind A · utility
7Cited by
3References
1Claims
0Family size
Inventors
Key dates
| Filing date | Dec 23, 1991 |
| Grant date | Oct 27, 1992 |
| Priority date | — |
| Expiry date | Dec 23, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G77/60
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polyorganosilanes are prepared through contact reaction of an organodihalosilane with alkali metal fine particles dispersed in an organic solvent. the reaction solution is adjusted to an acidity of pH 3 to 7 before or after the step of deactivating the excess alkali metal in the reaction solution. The alkali metal halide is removed from the reaction solution by dissolving it in water. Formation of insoluble components is minimized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.