Waste liquid-free processing of chlorosilane distillation residues with calcium carbonate
US5080804A · kind A · utility
4Cited by
6References
3Claims
0Family size
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Key dates
| Filing date | Nov 30, 1990 |
| Grant date | Jan 14, 1992 |
| Priority date | — |
| Expiry date | Nov 30, 2010 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA62D2101/22
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Residues which are obtained from the distillation of chlorosilanes prepared by reaction of raw silicon with chlorine or hydrogen chloride are processed by treatment in aqueous phase with an excess of at least 15% of calcium carbonate, and the liquid components are recycled into the process so that no liquid waste is formed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.