Purification of brominated organic products
US4214103A · kind A · utility
22Cited by
5References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 30, 1978 |
| Grant date | Jul 22, 1980 |
| Priority date | — |
| Expiry date | Nov 30, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C41/36
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Crude halogenated organic products, especially products consisting of partially halogenated diphenyl ethers alone or in admixture with other materials may be purified by contacting the crude brominated product with a finely divided basic solid such as a carbonate or bicarbonate of an alkali metal or ammonia for a time and at a temperature sufficient to enhance the purity thereof. The purification step may be performed in the presence of an organic solvent or by adding the basic solid directly to molten crude products in the presence of a small amount of water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.