Manufacturing method of high-purity chloropolysilane
US9085465B2 · kind B2 · utility
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13Claims
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Key dates
| Filing date | Dec 6, 2012 |
| Grant date | Jul 21, 2015 |
| Priority date | — |
| Expiry date | Dec 6, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B33/10742
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A chlorination reaction can be carried out at a relatively low temperature by heating a mixture of granular metallic silicon and metallic copper or a copper compound in an inert atmosphere even when the metallic silicon has a high purity and does not contain aluminum and titanium and that chloropolysilane of high purity can be obtained by further adding metallic silicon as needed after the chlorination reaction is started.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.